dive4elements/river: flys-artifacts/src/main/java/de/intevation/flys/artifacts/geom/Polygon2D.java annotate

annotate flys-artifacts/src/main/java/de/intevation/flys/artifacts/geom/Polygon2D.java @ 1799:281b9430c720

Polygon2D: More code to build polygons from curve. flys-artifacts/trunk@3123 c6561f87-3c4e-4783-a992-168aeb5c3f6f

author	Sascha L. Teichmann <sascha.teichmann@intevation.de>
date	Mon, 31 Oct 2011 15:54:02 +0000
parents	552888e9c64a
children	1402991208d5

rev	line source
1794 2ad7ba85a2b3 Work in progress: Added polygon to help creating 'Raum/Flaeche' renderers. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	1 package de.intevation.flys.geom;
2ad7ba85a2b3 Work in progress: Added polygon to help creating 'Raum/Flaeche' renderers. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	2
2ad7ba85a2b3 Work in progress: Added polygon to help creating 'Raum/Flaeche' renderers. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	3 import java.io.Serializable;
2ad7ba85a2b3 Work in progress: Added polygon to help creating 'Raum/Flaeche' renderers. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	4
2ad7ba85a2b3 Work in progress: Added polygon to help creating 'Raum/Flaeche' renderers. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	5 import java.awt.Shape;
2ad7ba85a2b3 Work in progress: Added polygon to help creating 'Raum/Flaeche' renderers. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	6
2ad7ba85a2b3 Work in progress: Added polygon to help creating 'Raum/Flaeche' renderers. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	7 import java.awt.geom.Path2D;
2ad7ba85a2b3 Work in progress: Added polygon to help creating 'Raum/Flaeche' renderers. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	8 import java.awt.geom.Point2D;
2ad7ba85a2b3 Work in progress: Added polygon to help creating 'Raum/Flaeche' renderers. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	9
2ad7ba85a2b3 Work in progress: Added polygon to help creating 'Raum/Flaeche' renderers. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	10 import java.util.ArrayList;
2ad7ba85a2b3 Work in progress: Added polygon to help creating 'Raum/Flaeche' renderers. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	11 import java.util.List;
2ad7ba85a2b3 Work in progress: Added polygon to help creating 'Raum/Flaeche' renderers. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	12 import java.util.Arrays;
2ad7ba85a2b3 Work in progress: Added polygon to help creating 'Raum/Flaeche' renderers. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	13 import java.util.Comparator;
2ad7ba85a2b3 Work in progress: Added polygon to help creating 'Raum/Flaeche' renderers. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	14 import java.util.Collections;
2ad7ba85a2b3 Work in progress: Added polygon to help creating 'Raum/Flaeche' renderers. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	15
1798 552888e9c64a Polygon2D: Handle start points when building polygons. Work in progress. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 1797 diff changeset	16 import de.intevation.flys.artifacts.math.Linear;
552888e9c64a Polygon2D: Handle start points when building polygons. Work in progress. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 1797 diff changeset	17
1799 281b9430c720 Polygon2D: More code to build polygons from curve. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 1798 diff changeset	18 import static de.intevation.flys.geom.VectorUtils.X;
281b9430c720 Polygon2D: More code to build polygons from curve. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 1798 diff changeset	19 import static de.intevation.flys.geom.VectorUtils.Y;
281b9430c720 Polygon2D: More code to build polygons from curve. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 1798 diff changeset	20 import static de.intevation.flys.geom.VectorUtils.EPSILON;
281b9430c720 Polygon2D: More code to build polygons from curve. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 1798 diff changeset	21
1794 2ad7ba85a2b3 Work in progress: Added polygon to help creating 'Raum/Flaeche' renderers. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	22 public class Polygon2D
2ad7ba85a2b3 Work in progress: Added polygon to help creating 'Raum/Flaeche' renderers. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	23 implements Serializable
2ad7ba85a2b3 Work in progress: Added polygon to help creating 'Raum/Flaeche' renderers. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	24 {
2ad7ba85a2b3 Work in progress: Added polygon to help creating 'Raum/Flaeche' renderers. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	25 public static final Comparator<Point2D> POINT_X_CMP =
2ad7ba85a2b3 Work in progress: Added polygon to help creating 'Raum/Flaeche' renderers. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	26 new Comparator<Point2D>() {
2ad7ba85a2b3 Work in progress: Added polygon to help creating 'Raum/Flaeche' renderers. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	27 public int compare(Point2D a, Point2D b) {
1795 fe7f9264a2ed Interim checkin for polygon calculation. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 1794 diff changeset	28 double d = X(a) - X(b);
1794 2ad7ba85a2b3 Work in progress: Added polygon to help creating 'Raum/Flaeche' renderers. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	29 if (d < 0d) return -1;
2ad7ba85a2b3 Work in progress: Added polygon to help creating 'Raum/Flaeche' renderers. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	30 return d > 0d ? + 1 : 0;
2ad7ba85a2b3 Work in progress: Added polygon to help creating 'Raum/Flaeche' renderers. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	31 }
2ad7ba85a2b3 Work in progress: Added polygon to help creating 'Raum/Flaeche' renderers. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	32 };
2ad7ba85a2b3 Work in progress: Added polygon to help creating 'Raum/Flaeche' renderers. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	33
2ad7ba85a2b3 Work in progress: Added polygon to help creating 'Raum/Flaeche' renderers. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	34 public static final Comparator<Point2D []> FIRST_POINT_X =
2ad7ba85a2b3 Work in progress: Added polygon to help creating 'Raum/Flaeche' renderers. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	35 new Comparator<Point2D []>() {
2ad7ba85a2b3 Work in progress: Added polygon to help creating 'Raum/Flaeche' renderers. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	36 public int compare(Point2D [] a, Point2D [] b) {
2ad7ba85a2b3 Work in progress: Added polygon to help creating 'Raum/Flaeche' renderers. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	37 if (a.length == 0) return -1; // should not happen.
2ad7ba85a2b3 Work in progress: Added polygon to help creating 'Raum/Flaeche' renderers. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	38 if (b.length == 0) return +1; // should not happen.
1795 fe7f9264a2ed Interim checkin for polygon calculation. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 1794 diff changeset	39 double d = X(a[0]) - Y(b[0]);
1794 2ad7ba85a2b3 Work in progress: Added polygon to help creating 'Raum/Flaeche' renderers. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	40 if (d < 0d) return -1;
2ad7ba85a2b3 Work in progress: Added polygon to help creating 'Raum/Flaeche' renderers. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	41 return d > 0d ? + 1 : 0;
2ad7ba85a2b3 Work in progress: Added polygon to help creating 'Raum/Flaeche' renderers. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	42 }
2ad7ba85a2b3 Work in progress: Added polygon to help creating 'Raum/Flaeche' renderers. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	43 };
2ad7ba85a2b3 Work in progress: Added polygon to help creating 'Raum/Flaeche' renderers. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	44
1795 fe7f9264a2ed Interim checkin for polygon calculation. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 1794 diff changeset	45 protected List<Point2D> points;
1794 2ad7ba85a2b3 Work in progress: Added polygon to help creating 'Raum/Flaeche' renderers. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	46
2ad7ba85a2b3 Work in progress: Added polygon to help creating 'Raum/Flaeche' renderers. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	47 public Polygon2D() {
1795 fe7f9264a2ed Interim checkin for polygon calculation. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 1794 diff changeset	48 points = new ArrayList<Point2D>();
fe7f9264a2ed Interim checkin for polygon calculation. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 1794 diff changeset	49 }
fe7f9264a2ed Interim checkin for polygon calculation. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 1794 diff changeset	50
1799 281b9430c720 Polygon2D: More code to build polygons from curve. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 1798 diff changeset	51 public Point2D(List<Point2D> points) {
281b9430c720 Polygon2D: More code to build polygons from curve. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 1798 diff changeset	52 this.points = points;
281b9430c720 Polygon2D: More code to build polygons from curve. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 1798 diff changeset	53 }
281b9430c720 Polygon2D: More code to build polygons from curve. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 1798 diff changeset	54
1794 2ad7ba85a2b3 Work in progress: Added polygon to help creating 'Raum/Flaeche' renderers. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	55 public void add(double x, double y) {
1795 fe7f9264a2ed Interim checkin for polygon calculation. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 1794 diff changeset	56 points.add(new Point2D.Double(x, y));
fe7f9264a2ed Interim checkin for polygon calculation. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 1794 diff changeset	57 }
fe7f9264a2ed Interim checkin for polygon calculation. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 1794 diff changeset	58
1798 552888e9c64a Polygon2D: Handle start points when building polygons. Work in progress. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 1797 diff changeset	59 protected static boolean addCheck(Point2D p, List<Point2D> points) {
1795 fe7f9264a2ed Interim checkin for polygon calculation. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 1794 diff changeset	60 switch (points.size()) {
fe7f9264a2ed Interim checkin for polygon calculation. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 1794 diff changeset	61 case 0:
fe7f9264a2ed Interim checkin for polygon calculation. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 1794 diff changeset	62 points.add(p);
fe7f9264a2ed Interim checkin for polygon calculation. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 1794 diff changeset	63 return true;
fe7f9264a2ed Interim checkin for polygon calculation. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 1794 diff changeset	64 case 1:
1797 5eec623db50a Polygon2D: moved 2D vector operation to separate class. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 1795 diff changeset	65 if (VectorUtils.epsilonEquals(points.get(0), p)) {
1795 fe7f9264a2ed Interim checkin for polygon calculation. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 1794 diff changeset	66 return false;
fe7f9264a2ed Interim checkin for polygon calculation. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 1794 diff changeset	67 }
fe7f9264a2ed Interim checkin for polygon calculation. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 1794 diff changeset	68 points.add(p);
fe7f9264a2ed Interim checkin for polygon calculation. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 1794 diff changeset	69 return true;
fe7f9264a2ed Interim checkin for polygon calculation. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 1794 diff changeset	70 default:
fe7f9264a2ed Interim checkin for polygon calculation. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 1794 diff changeset	71 int L = points.size()-1;
fe7f9264a2ed Interim checkin for polygon calculation. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 1794 diff changeset	72 Point2D last = points.get(L);
1797 5eec623db50a Polygon2D: moved 2D vector operation to separate class. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 1795 diff changeset	73 if (VectorUtils.epsilonEquals(last, p)) {
1795 fe7f9264a2ed Interim checkin for polygon calculation. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 1794 diff changeset	74 return false;
fe7f9264a2ed Interim checkin for polygon calculation. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 1794 diff changeset	75 }
fe7f9264a2ed Interim checkin for polygon calculation. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 1794 diff changeset	76 Point2D before = points.get(L-1);
1797 5eec623db50a Polygon2D: moved 2D vector operation to separate class. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 1795 diff changeset	77 if (VectorUtils.collinear(before, last, p)) {
1795 fe7f9264a2ed Interim checkin for polygon calculation. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 1794 diff changeset	78 points.set(L, p);
fe7f9264a2ed Interim checkin for polygon calculation. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 1794 diff changeset	79 }
fe7f9264a2ed Interim checkin for polygon calculation. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 1794 diff changeset	80 else {
fe7f9264a2ed Interim checkin for polygon calculation. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 1794 diff changeset	81 points.add(p);
fe7f9264a2ed Interim checkin for polygon calculation. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 1794 diff changeset	82 }
fe7f9264a2ed Interim checkin for polygon calculation. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 1794 diff changeset	83 return true;
fe7f9264a2ed Interim checkin for polygon calculation. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 1794 diff changeset	84 }
fe7f9264a2ed Interim checkin for polygon calculation. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 1794 diff changeset	85 }
fe7f9264a2ed Interim checkin for polygon calculation. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 1794 diff changeset	86
1798 552888e9c64a Polygon2D: Handle start points when building polygons. Work in progress. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 1797 diff changeset	87 public boolean addCheck(Point2D p) {
552888e9c64a Polygon2D: Handle start points when building polygons. Work in progress. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 1797 diff changeset	88 return addCheck(p, points);
552888e9c64a Polygon2D: Handle start points when building polygons. Work in progress. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 1797 diff changeset	89 }
552888e9c64a Polygon2D: Handle start points when building polygons. Work in progress. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 1797 diff changeset	90
1795 fe7f9264a2ed Interim checkin for polygon calculation. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 1794 diff changeset	91 public void addReversed(List<Point2D> other) {
fe7f9264a2ed Interim checkin for polygon calculation. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 1794 diff changeset	92 for (int i = other.size()-1; i >= 0; --i) {
fe7f9264a2ed Interim checkin for polygon calculation. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 1794 diff changeset	93 addCheck(other.get(i));
fe7f9264a2ed Interim checkin for polygon calculation. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 1794 diff changeset	94 }
fe7f9264a2ed Interim checkin for polygon calculation. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 1794 diff changeset	95 }
fe7f9264a2ed Interim checkin for polygon calculation. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 1794 diff changeset	96
1794 2ad7ba85a2b3 Work in progress: Added polygon to help creating 'Raum/Flaeche' renderers. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	97 public double area() {
2ad7ba85a2b3 Work in progress: Added polygon to help creating 'Raum/Flaeche' renderers. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	98 double area = 0d;
2ad7ba85a2b3 Work in progress: Added polygon to help creating 'Raum/Flaeche' renderers. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	99
1795 fe7f9264a2ed Interim checkin for polygon calculation. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 1794 diff changeset	100 for (int i = 0, N = points.size(); i < N; ++i) {
1794 2ad7ba85a2b3 Work in progress: Added polygon to help creating 'Raum/Flaeche' renderers. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	101 int j = (i + 1) % N;
1795 fe7f9264a2ed Interim checkin for polygon calculation. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 1794 diff changeset	102 Point2D pi = points.get(i);
fe7f9264a2ed Interim checkin for polygon calculation. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 1794 diff changeset	103 Point2D pj = points.get(j);
fe7f9264a2ed Interim checkin for polygon calculation. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 1794 diff changeset	104 area += X(pi)*Y(pj);
fe7f9264a2ed Interim checkin for polygon calculation. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 1794 diff changeset	105 area -= X(pj)*Y(pi);
1794 2ad7ba85a2b3 Work in progress: Added polygon to help creating 'Raum/Flaeche' renderers. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	106 }
2ad7ba85a2b3 Work in progress: Added polygon to help creating 'Raum/Flaeche' renderers. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	107
2ad7ba85a2b3 Work in progress: Added polygon to help creating 'Raum/Flaeche' renderers. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	108 return 0.5d*area;
2ad7ba85a2b3 Work in progress: Added polygon to help creating 'Raum/Flaeche' renderers. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	109 }
2ad7ba85a2b3 Work in progress: Added polygon to help creating 'Raum/Flaeche' renderers. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	110
2ad7ba85a2b3 Work in progress: Added polygon to help creating 'Raum/Flaeche' renderers. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	111 public Shape toShape() {
2ad7ba85a2b3 Work in progress: Added polygon to help creating 'Raum/Flaeche' renderers. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	112 Path2D.Double path = new Path2D.Double();
2ad7ba85a2b3 Work in progress: Added polygon to help creating 'Raum/Flaeche' renderers. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	113
1795 fe7f9264a2ed Interim checkin for polygon calculation. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 1794 diff changeset	114 int N = points.size();
1794 2ad7ba85a2b3 Work in progress: Added polygon to help creating 'Raum/Flaeche' renderers. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	115
2ad7ba85a2b3 Work in progress: Added polygon to help creating 'Raum/Flaeche' renderers. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	116 if (N > 0) {
1795 fe7f9264a2ed Interim checkin for polygon calculation. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 1794 diff changeset	117 Point2D p = points.get(0);
fe7f9264a2ed Interim checkin for polygon calculation. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 1794 diff changeset	118 path.moveTo(X(p), Y(p));
1794 2ad7ba85a2b3 Work in progress: Added polygon to help creating 'Raum/Flaeche' renderers. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	119 for (int i = 1; i < N; ++i) {
1795 fe7f9264a2ed Interim checkin for polygon calculation. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 1794 diff changeset	120 p = points.get(i);
fe7f9264a2ed Interim checkin for polygon calculation. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 1794 diff changeset	121 path.lineTo(X(p), Y(p));
1794 2ad7ba85a2b3 Work in progress: Added polygon to help creating 'Raum/Flaeche' renderers. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	122 }
2ad7ba85a2b3 Work in progress: Added polygon to help creating 'Raum/Flaeche' renderers. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	123 path.closePath();
2ad7ba85a2b3 Work in progress: Added polygon to help creating 'Raum/Flaeche' renderers. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	124 }
2ad7ba85a2b3 Work in progress: Added polygon to help creating 'Raum/Flaeche' renderers. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	125
2ad7ba85a2b3 Work in progress: Added polygon to help creating 'Raum/Flaeche' renderers. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	126 return path;
2ad7ba85a2b3 Work in progress: Added polygon to help creating 'Raum/Flaeche' renderers. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	127 }
2ad7ba85a2b3 Work in progress: Added polygon to help creating 'Raum/Flaeche' renderers. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	128
2ad7ba85a2b3 Work in progress: Added polygon to help creating 'Raum/Flaeche' renderers. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	129 protected static List<Point2D []> splitByNaNs(
2ad7ba85a2b3 Work in progress: Added polygon to help creating 'Raum/Flaeche' renderers. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	130 double [] xs,
2ad7ba85a2b3 Work in progress: Added polygon to help creating 'Raum/Flaeche' renderers. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	131 double [] ys
2ad7ba85a2b3 Work in progress: Added polygon to help creating 'Raum/Flaeche' renderers. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	132 ) {
2ad7ba85a2b3 Work in progress: Added polygon to help creating 'Raum/Flaeche' renderers. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	133 List<Point2D []> parts = new ArrayList<Point2D []>();
2ad7ba85a2b3 Work in progress: Added polygon to help creating 'Raum/Flaeche' renderers. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	134
2ad7ba85a2b3 Work in progress: Added polygon to help creating 'Raum/Flaeche' renderers. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	135 List<Point2D> tmp = new ArrayList<Point2D>(xs.length);
2ad7ba85a2b3 Work in progress: Added polygon to help creating 'Raum/Flaeche' renderers. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	136
2ad7ba85a2b3 Work in progress: Added polygon to help creating 'Raum/Flaeche' renderers. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	137 for (int i = 0; i < xs.length; ++i) {
2ad7ba85a2b3 Work in progress: Added polygon to help creating 'Raum/Flaeche' renderers. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	138 double x = xs[i];
2ad7ba85a2b3 Work in progress: Added polygon to help creating 'Raum/Flaeche' renderers. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	139 double y = ys[i];
2ad7ba85a2b3 Work in progress: Added polygon to help creating 'Raum/Flaeche' renderers. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	140
2ad7ba85a2b3 Work in progress: Added polygon to help creating 'Raum/Flaeche' renderers. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	141 if (Double.isNaN(x) \|\| Double.isNaN(y)) {
2ad7ba85a2b3 Work in progress: Added polygon to help creating 'Raum/Flaeche' renderers. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	142 if (!tmp.isEmpty()) {
2ad7ba85a2b3 Work in progress: Added polygon to help creating 'Raum/Flaeche' renderers. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	143 Point2D [] part = new Point2D[tmp.size()];
2ad7ba85a2b3 Work in progress: Added polygon to help creating 'Raum/Flaeche' renderers. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	144 parts.add(tmp.toArray(part));
2ad7ba85a2b3 Work in progress: Added polygon to help creating 'Raum/Flaeche' renderers. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	145 tmp.clear();
2ad7ba85a2b3 Work in progress: Added polygon to help creating 'Raum/Flaeche' renderers. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	146 }
2ad7ba85a2b3 Work in progress: Added polygon to help creating 'Raum/Flaeche' renderers. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	147 }
2ad7ba85a2b3 Work in progress: Added polygon to help creating 'Raum/Flaeche' renderers. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	148 else {
2ad7ba85a2b3 Work in progress: Added polygon to help creating 'Raum/Flaeche' renderers. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	149 tmp.add(new Point2D.Double(x, y));
2ad7ba85a2b3 Work in progress: Added polygon to help creating 'Raum/Flaeche' renderers. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	150 }
2ad7ba85a2b3 Work in progress: Added polygon to help creating 'Raum/Flaeche' renderers. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	151 }
2ad7ba85a2b3 Work in progress: Added polygon to help creating 'Raum/Flaeche' renderers. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	152
2ad7ba85a2b3 Work in progress: Added polygon to help creating 'Raum/Flaeche' renderers. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	153 if (!tmp.isEmpty()) {
2ad7ba85a2b3 Work in progress: Added polygon to help creating 'Raum/Flaeche' renderers. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	154 Point2D [] part = new Point2D[tmp.size()];
2ad7ba85a2b3 Work in progress: Added polygon to help creating 'Raum/Flaeche' renderers. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	155 parts.add(tmp.toArray(part));
2ad7ba85a2b3 Work in progress: Added polygon to help creating 'Raum/Flaeche' renderers. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	156 }
2ad7ba85a2b3 Work in progress: Added polygon to help creating 'Raum/Flaeche' renderers. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	157
2ad7ba85a2b3 Work in progress: Added polygon to help creating 'Raum/Flaeche' renderers. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	158 return parts;
2ad7ba85a2b3 Work in progress: Added polygon to help creating 'Raum/Flaeche' renderers. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	159 }
2ad7ba85a2b3 Work in progress: Added polygon to help creating 'Raum/Flaeche' renderers. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	160
1795 fe7f9264a2ed Interim checkin for polygon calculation. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 1794 diff changeset	161 protected static boolean removeNoneIntersecting(
fe7f9264a2ed Interim checkin for polygon calculation. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 1794 diff changeset	162 List<Point2D []> As,
fe7f9264a2ed Interim checkin for polygon calculation. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 1794 diff changeset	163 List<Point2D []> Bs
fe7f9264a2ed Interim checkin for polygon calculation. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 1794 diff changeset	164 ) {
1798 552888e9c64a Polygon2D: Handle start points when building polygons. Work in progress. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 1797 diff changeset	165 int B = Bs.size()-1;
1795 fe7f9264a2ed Interim checkin for polygon calculation. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 1794 diff changeset	166 OUTER: for (int i = 0; i < As.size();) {
fe7f9264a2ed Interim checkin for polygon calculation. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 1794 diff changeset	167 Point2D [] a = As.get(i);
1798 552888e9c64a Polygon2D: Handle start points when building polygons. Work in progress. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 1797 diff changeset	168 int lo = 0, hi = B;
1795 fe7f9264a2ed Interim checkin for polygon calculation. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 1794 diff changeset	169 while (lo <= hi) {
fe7f9264a2ed Interim checkin for polygon calculation. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 1794 diff changeset	170 int mid = (lo + hi) >> 1;
fe7f9264a2ed Interim checkin for polygon calculation. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 1794 diff changeset	171 Point2D [] b = Bs.get(mid);
fe7f9264a2ed Interim checkin for polygon calculation. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 1794 diff changeset	172 if (X(a[0]) > X(b[b.length-1])) lo = mid+1;
fe7f9264a2ed Interim checkin for polygon calculation. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 1794 diff changeset	173 else if (X(a[a.length-1]) < X(b[0])) hi = mid-1;
fe7f9264a2ed Interim checkin for polygon calculation. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 1794 diff changeset	174 else {
fe7f9264a2ed Interim checkin for polygon calculation. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 1794 diff changeset	175 // found: keep
fe7f9264a2ed Interim checkin for polygon calculation. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 1794 diff changeset	176 ++i;
fe7f9264a2ed Interim checkin for polygon calculation. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 1794 diff changeset	177 continue OUTER;
fe7f9264a2ed Interim checkin for polygon calculation. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 1794 diff changeset	178 }
fe7f9264a2ed Interim checkin for polygon calculation. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 1794 diff changeset	179 }
fe7f9264a2ed Interim checkin for polygon calculation. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 1794 diff changeset	180 // not found: remove
fe7f9264a2ed Interim checkin for polygon calculation. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 1794 diff changeset	181 As.remove(i);
fe7f9264a2ed Interim checkin for polygon calculation. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 1794 diff changeset	182 }
fe7f9264a2ed Interim checkin for polygon calculation. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 1794 diff changeset	183
fe7f9264a2ed Interim checkin for polygon calculation. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 1794 diff changeset	184 return As.isEmpty();
fe7f9264a2ed Interim checkin for polygon calculation. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 1794 diff changeset	185 }
fe7f9264a2ed Interim checkin for polygon calculation. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 1794 diff changeset	186
fe7f9264a2ed Interim checkin for polygon calculation. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 1794 diff changeset	187 protected static void buildPolygons(
fe7f9264a2ed Interim checkin for polygon calculation. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 1794 diff changeset	188 Point2D [] as,
fe7f9264a2ed Interim checkin for polygon calculation. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 1794 diff changeset	189 Point2D [] bs,
fe7f9264a2ed Interim checkin for polygon calculation. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 1794 diff changeset	190 Point2D [][] rest,
fe7f9264a2ed Interim checkin for polygon calculation. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 1794 diff changeset	191 List<Polygon2D> positives,
fe7f9264a2ed Interim checkin for polygon calculation. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 1794 diff changeset	192 List<Polygon2D> negatives
fe7f9264a2ed Interim checkin for polygon calculation. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 1794 diff changeset	193 ) {
1798 552888e9c64a Polygon2D: Handle start points when building polygons. Work in progress. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 1797 diff changeset	194 List<Point2D> apoints = new ArrayList<Point2D>();
552888e9c64a Polygon2D: Handle start points when building polygons. Work in progress. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 1797 diff changeset	195 List<Point2D> bpoints = new ArrayList<Point2D>();
552888e9c64a Polygon2D: Handle start points when building polygons. Work in progress. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 1797 diff changeset	196
552888e9c64a Polygon2D: Handle start points when building polygons. Work in progress. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 1797 diff changeset	197 double ax = X(as[0]);
552888e9c64a Polygon2D: Handle start points when building polygons. Work in progress. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 1797 diff changeset	198 double bx = X(bs[0]);
552888e9c64a Polygon2D: Handle start points when building polygons. Work in progress. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 1797 diff changeset	199
1799 281b9430c720 Polygon2D: More code to build polygons from curve. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 1798 diff changeset	200 int ai = 1;
281b9430c720 Polygon2D: More code to build polygons from curve. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 1798 diff changeset	201 int bi = 1;
281b9430c720 Polygon2D: More code to build polygons from curve. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 1798 diff changeset	202
281b9430c720 Polygon2D: More code to build polygons from curve. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 1798 diff changeset	203 boolean intersect = false;
1798 552888e9c64a Polygon2D: Handle start points when building polygons. Work in progress. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 1797 diff changeset	204
552888e9c64a Polygon2D: Handle start points when building polygons. Work in progress. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 1797 diff changeset	205 if (ax == bx) {
552888e9c64a Polygon2D: Handle start points when building polygons. Work in progress. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 1797 diff changeset	206 apoints.add(as[0]);
552888e9c64a Polygon2D: Handle start points when building polygons. Work in progress. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 1797 diff changeset	207 bpoints.add(bs[0]);
552888e9c64a Polygon2D: Handle start points when building polygons. Work in progress. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 1797 diff changeset	208 }
552888e9c64a Polygon2D: Handle start points when building polygons. Work in progress. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 1797 diff changeset	209 else if (ax > bx) {
552888e9c64a Polygon2D: Handle start points when building polygons. Work in progress. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 1797 diff changeset	210 apoints.add(as[0]);
552888e9c64a Polygon2D: Handle start points when building polygons. Work in progress. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 1797 diff changeset	211 double bx1;
552888e9c64a Polygon2D: Handle start points when building polygons. Work in progress. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 1797 diff changeset	212 while ((bx1 = X(bs[bi])) < ax) ++bi;
552888e9c64a Polygon2D: Handle start points when building polygons. Work in progress. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 1797 diff changeset	213 if (bx1 == ax) {
552888e9c64a Polygon2D: Handle start points when building polygons. Work in progress. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 1797 diff changeset	214 bpoints.add(bs[bi]);
552888e9c64a Polygon2D: Handle start points when building polygons. Work in progress. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 1797 diff changeset	215 }
552888e9c64a Polygon2D: Handle start points when building polygons. Work in progress. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 1797 diff changeset	216 else { // need to calculate start b point.
1799 281b9430c720 Polygon2D: More code to build polygons from curve. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 1798 diff changeset	217 intersect = true;
1798 552888e9c64a Polygon2D: Handle start points when building polygons. Work in progress. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 1797 diff changeset	218 double by1 = Linear.linear(
552888e9c64a Polygon2D: Handle start points when building polygons. Work in progress. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 1797 diff changeset	219 ax,
552888e9c64a Polygon2D: Handle start points when building polygons. Work in progress. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 1797 diff changeset	220 X(bs[bi-1]), bx1,
552888e9c64a Polygon2D: Handle start points when building polygons. Work in progress. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 1797 diff changeset	221 Y(bs[bi-1]), Y(bs[bi]));
552888e9c64a Polygon2D: Handle start points when building polygons. Work in progress. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 1797 diff changeset	222
552888e9c64a Polygon2D: Handle start points when building polygons. Work in progress. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 1797 diff changeset	223 bpoints.add(new Point2D.Double(ax, by1));
552888e9c64a Polygon2D: Handle start points when building polygons. Work in progress. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 1797 diff changeset	224 }
552888e9c64a Polygon2D: Handle start points when building polygons. Work in progress. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 1797 diff changeset	225 }
552888e9c64a Polygon2D: Handle start points when building polygons. Work in progress. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 1797 diff changeset	226 else { // bx > ax: Symmetric case
552888e9c64a Polygon2D: Handle start points when building polygons. Work in progress. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 1797 diff changeset	227 bpoints.add(bs[0]);
552888e9c64a Polygon2D: Handle start points when building polygons. Work in progress. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 1797 diff changeset	228 double ax1;
552888e9c64a Polygon2D: Handle start points when building polygons. Work in progress. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 1797 diff changeset	229 while ((ax1 = X(as[ai])) < bx) ++ai;
552888e9c64a Polygon2D: Handle start points when building polygons. Work in progress. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 1797 diff changeset	230 if (ax1 == bx) {
552888e9c64a Polygon2D: Handle start points when building polygons. Work in progress. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 1797 diff changeset	231 apoints.add(as[ai]);
552888e9c64a Polygon2D: Handle start points when building polygons. Work in progress. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 1797 diff changeset	232 }
552888e9c64a Polygon2D: Handle start points when building polygons. Work in progress. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 1797 diff changeset	233 else { // need to calculate start b point.
1799 281b9430c720 Polygon2D: More code to build polygons from curve. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 1798 diff changeset	234 intersect = true;
1798 552888e9c64a Polygon2D: Handle start points when building polygons. Work in progress. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 1797 diff changeset	235 double ay1 = Linear.linear(
552888e9c64a Polygon2D: Handle start points when building polygons. Work in progress. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 1797 diff changeset	236 bx,
552888e9c64a Polygon2D: Handle start points when building polygons. Work in progress. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 1797 diff changeset	237 X(as[ai-1]), ax1,
552888e9c64a Polygon2D: Handle start points when building polygons. Work in progress. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 1797 diff changeset	238 Y(as[ai-1]), Y(as[ai]));
552888e9c64a Polygon2D: Handle start points when building polygons. Work in progress. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 1797 diff changeset	239
552888e9c64a Polygon2D: Handle start points when building polygons. Work in progress. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 1797 diff changeset	240 apoints.add(new Point2D.Double(bx, ay1));
552888e9c64a Polygon2D: Handle start points when building polygons. Work in progress. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 1797 diff changeset	241 }
552888e9c64a Polygon2D: Handle start points when building polygons. Work in progress. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 1797 diff changeset	242 }
552888e9c64a Polygon2D: Handle start points when building polygons. Work in progress. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 1797 diff changeset	243
552888e9c64a Polygon2D: Handle start points when building polygons. Work in progress. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 1797 diff changeset	244 // now we have a point in each list, decide if neg/pos.
552888e9c64a Polygon2D: Handle start points when building polygons. Work in progress. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 1797 diff changeset	245 boolean neg = Y(bpoints.get(0)) > Y(apoints.get(0));
552888e9c64a Polygon2D: Handle start points when building polygons. Work in progress. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 1797 diff changeset	246
1799 281b9430c720 Polygon2D: More code to build polygons from curve. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 1798 diff changeset	247 // Continue with inner points
281b9430c720 Polygon2D: More code to build polygons from curve. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 1798 diff changeset	248
281b9430c720 Polygon2D: More code to build polygons from curve. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 1798 diff changeset	249 Line line = new Line();
281b9430c720 Polygon2D: More code to build polygons from curve. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 1798 diff changeset	250
281b9430c720 Polygon2D: More code to build polygons from curve. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 1798 diff changeset	251 while (ai < as.length && bi < bs.length) {
281b9430c720 Polygon2D: More code to build polygons from curve. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 1798 diff changeset	252 double xan = X(as[ai]);
281b9430c720 Polygon2D: More code to build polygons from curve. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 1798 diff changeset	253 double xbn = X(bs[bi]);
281b9430c720 Polygon2D: More code to build polygons from curve. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 1798 diff changeset	254 if (xan == xbn) {
281b9430c720 Polygon2D: More code to build polygons from curve. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 1798 diff changeset	255 double yan = Y(as[ai]);
281b9430c720 Polygon2D: More code to build polygons from curve. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 1798 diff changeset	256 double ybn = Y(bs[ai]);
281b9430c720 Polygon2D: More code to build polygons from curve. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 1798 diff changeset	257
281b9430c720 Polygon2D: More code to build polygons from curve. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 1798 diff changeset	258 if (neg) {
281b9430c720 Polygon2D: More code to build polygons from curve. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 1798 diff changeset	259 if (yan > ybn) { // intersection
281b9430c720 Polygon2D: More code to build polygons from curve. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 1798 diff changeset	260 // TODO: calculate intersection point
281b9430c720 Polygon2D: More code to build polygons from curve. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 1798 diff changeset	261 // finish polygon and start a new one
281b9430c720 Polygon2D: More code to build polygons from curve. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 1798 diff changeset	262 }
281b9430c720 Polygon2D: More code to build polygons from curve. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 1798 diff changeset	263 else { // no intersection
281b9430c720 Polygon2D: More code to build polygons from curve. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 1798 diff changeset	264 addCheck(as[ai], apoints);
281b9430c720 Polygon2D: More code to build polygons from curve. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 1798 diff changeset	265 addCheck(bs[bi], bpoints);
281b9430c720 Polygon2D: More code to build polygons from curve. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 1798 diff changeset	266 ++ai;
281b9430c720 Polygon2D: More code to build polygons from curve. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 1798 diff changeset	267 ++bi;
281b9430c720 Polygon2D: More code to build polygons from curve. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 1798 diff changeset	268 }
281b9430c720 Polygon2D: More code to build polygons from curve. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 1798 diff changeset	269 }
281b9430c720 Polygon2D: More code to build polygons from curve. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 1798 diff changeset	270 else { // not neg
281b9430c720 Polygon2D: More code to build polygons from curve. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 1798 diff changeset	271 if (ybn > yan) { // intersection
281b9430c720 Polygon2D: More code to build polygons from curve. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 1798 diff changeset	272 // TODO: calculate intersection point
281b9430c720 Polygon2D: More code to build polygons from curve. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 1798 diff changeset	273 // finish polygon and start a new one
281b9430c720 Polygon2D: More code to build polygons from curve. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 1798 diff changeset	274 }
281b9430c720 Polygon2D: More code to build polygons from curve. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 1798 diff changeset	275 else { // no intersection
281b9430c720 Polygon2D: More code to build polygons from curve. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 1798 diff changeset	276 addCheck(as[ai], apoints);
281b9430c720 Polygon2D: More code to build polygons from curve. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 1798 diff changeset	277 addCheck(bs[bi], bpoints);
281b9430c720 Polygon2D: More code to build polygons from curve. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 1798 diff changeset	278 ++ai;
281b9430c720 Polygon2D: More code to build polygons from curve. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 1798 diff changeset	279 ++bi;
281b9430c720 Polygon2D: More code to build polygons from curve. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 1798 diff changeset	280 }
281b9430c720 Polygon2D: More code to build polygons from curve. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 1798 diff changeset	281 }
281b9430c720 Polygon2D: More code to build polygons from curve. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 1798 diff changeset	282 }
281b9430c720 Polygon2D: More code to build polygons from curve. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 1798 diff changeset	283 else if (xan > xbn) {
281b9430c720 Polygon2D: More code to build polygons from curve. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 1798 diff changeset	284 line.set(apoints.get(apoints.size()-1), as[ai]);
281b9430c720 Polygon2D: More code to build polygons from curve. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 1798 diff changeset	285 double dir = neg ? -1d: 1d; // XXX: correct sign?
281b9430c720 Polygon2D: More code to build polygons from curve. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 1798 diff changeset	286 while (bi < bs.length
281b9430c720 Polygon2D: More code to build polygons from curve. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 1798 diff changeset	287 && X(bs[bi]) < xan
281b9430c720 Polygon2D: More code to build polygons from curve. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 1798 diff changeset	288 && line.eval(bs[bi])*dir > EPSILON)
281b9430c720 Polygon2D: More code to build polygons from curve. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 1798 diff changeset	289 ++bi;
281b9430c720 Polygon2D: More code to build polygons from curve. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 1798 diff changeset	290 if (bi == bs.length) {
281b9430c720 Polygon2D: More code to build polygons from curve. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 1798 diff changeset	291 // b run out of points
281b9430c720 Polygon2D: More code to build polygons from curve. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 1798 diff changeset	292 // calculate Y(last_a, as[ai]) for X(bs[bi-1])
281b9430c720 Polygon2D: More code to build polygons from curve. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 1798 diff changeset	293 double ay1 = Linear.linear(
281b9430c720 Polygon2D: More code to build polygons from curve. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 1798 diff changeset	294 X(bs[bi-1]),
281b9430c720 Polygon2D: More code to build polygons from curve. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 1798 diff changeset	295 X(apoints.get(apoints.size()-1)), X(as[ai]),
281b9430c720 Polygon2D: More code to build polygons from curve. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 1798 diff changeset	296 Y(apoints.get(apoints.size()-1)), Y(as[ai]));
281b9430c720 Polygon2D: More code to build polygons from curve. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 1798 diff changeset	297 addCheck(new Point2D.Double(X(bs[bi-1]), ay1), apoints);
281b9430c720 Polygon2D: More code to build polygons from curve. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 1798 diff changeset	298 addCheck(bs[bi-1], bpoints);
281b9430c720 Polygon2D: More code to build polygons from curve. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 1798 diff changeset	299 break;
281b9430c720 Polygon2D: More code to build polygons from curve. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 1798 diff changeset	300 }
281b9430c720 Polygon2D: More code to build polygons from curve. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 1798 diff changeset	301 else {
281b9430c720 Polygon2D: More code to build polygons from curve. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 1798 diff changeset	302 // TODO: intersect line and/or X(bs[bi]) >= xan?
281b9430c720 Polygon2D: More code to build polygons from curve. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 1798 diff changeset	303 }
281b9430c720 Polygon2D: More code to build polygons from curve. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 1798 diff changeset	304 }
281b9430c720 Polygon2D: More code to build polygons from curve. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 1798 diff changeset	305 else { // xbn > xan
281b9430c720 Polygon2D: More code to build polygons from curve. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 1798 diff changeset	306 line.set(bpoints.get(bpoints.size()-1), bs[bi]);
281b9430c720 Polygon2D: More code to build polygons from curve. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 1798 diff changeset	307 // TODO: continue symmetric
281b9430c720 Polygon2D: More code to build polygons from curve. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 1798 diff changeset	308 }
281b9430c720 Polygon2D: More code to build polygons from curve. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 1798 diff changeset	309 }
281b9430c720 Polygon2D: More code to build polygons from curve. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 1798 diff changeset	310
281b9430c720 Polygon2D: More code to build polygons from curve. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 1798 diff changeset	311 // TODO: Continue with closing segment
281b9430c720 Polygon2D: More code to build polygons from curve. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 1798 diff changeset	312 }
281b9430c720 Polygon2D: More code to build polygons from curve. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 1798 diff changeset	313
281b9430c720 Polygon2D: More code to build polygons from curve. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 1798 diff changeset	314 public static final class Line {
281b9430c720 Polygon2D: More code to build polygons from curve. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 1798 diff changeset	315
281b9430c720 Polygon2D: More code to build polygons from curve. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 1798 diff changeset	316 private double a;
281b9430c720 Polygon2D: More code to build polygons from curve. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 1798 diff changeset	317 private double b;
281b9430c720 Polygon2D: More code to build polygons from curve. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 1798 diff changeset	318 private double c;
281b9430c720 Polygon2D: More code to build polygons from curve. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 1798 diff changeset	319
281b9430c720 Polygon2D: More code to build polygons from curve. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 1798 diff changeset	320 public Line() {
281b9430c720 Polygon2D: More code to build polygons from curve. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 1798 diff changeset	321 }
281b9430c720 Polygon2D: More code to build polygons from curve. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 1798 diff changeset	322
281b9430c720 Polygon2D: More code to build polygons from curve. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 1798 diff changeset	323 public Line(Point2D p1, Point2D p2) {
281b9430c720 Polygon2D: More code to build polygons from curve. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 1798 diff changeset	324 set(p1, p2);
281b9430c720 Polygon2D: More code to build polygons from curve. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 1798 diff changeset	325 }
281b9430c720 Polygon2D: More code to build polygons from curve. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 1798 diff changeset	326
281b9430c720 Polygon2D: More code to build polygons from curve. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 1798 diff changeset	327 public void set(Point2D p1, Point2D p2) {
281b9430c720 Polygon2D: More code to build polygons from curve. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 1798 diff changeset	328 Point2D p3 =
281b9430c720 Polygon2D: More code to build polygons from curve. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 1798 diff changeset	329 VectorUtils.normalize(
281b9430c720 Polygon2D: More code to build polygons from curve. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 1798 diff changeset	330 VectorUtils.sub(p1, p2));
281b9430c720 Polygon2D: More code to build polygons from curve. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 1798 diff changeset	331
281b9430c720 Polygon2D: More code to build polygons from curve. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 1798 diff changeset	332 Point2D n = VectorUtils.ortho(p3);
281b9430c720 Polygon2D: More code to build polygons from curve. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 1798 diff changeset	333
281b9430c720 Polygon2D: More code to build polygons from curve. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 1798 diff changeset	334 a = X(n);
281b9430c720 Polygon2D: More code to build polygons from curve. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 1798 diff changeset	335 b = Y(n);
281b9430c720 Polygon2D: More code to build polygons from curve. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 1798 diff changeset	336
281b9430c720 Polygon2D: More code to build polygons from curve. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 1798 diff changeset	337 // ax + by + c = 0
281b9430c720 Polygon2D: More code to build polygons from curve. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 1798 diff changeset	338 // c = -ax -by
281b9430c720 Polygon2D: More code to build polygons from curve. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 1798 diff changeset	339
281b9430c720 Polygon2D: More code to build polygons from curve. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 1798 diff changeset	340 c = -aX(p1) - bY(p1);
281b9430c720 Polygon2D: More code to build polygons from curve. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 1798 diff changeset	341 }
281b9430c720 Polygon2D: More code to build polygons from curve. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 1798 diff changeset	342
281b9430c720 Polygon2D: More code to build polygons from curve. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 1798 diff changeset	343 public double eval(Point2D p) {
281b9430c720 Polygon2D: More code to build polygons from curve. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 1798 diff changeset	344 return aX(p) + bY(p) + c;
281b9430c720 Polygon2D: More code to build polygons from curve. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 1798 diff changeset	345 }
1795 fe7f9264a2ed Interim checkin for polygon calculation. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 1794 diff changeset	346 }
fe7f9264a2ed Interim checkin for polygon calculation. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 1794 diff changeset	347
1794 2ad7ba85a2b3 Work in progress: Added polygon to help creating 'Raum/Flaeche' renderers. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	348 public static void createPolygons(
2ad7ba85a2b3 Work in progress: Added polygon to help creating 'Raum/Flaeche' renderers. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	349 double [] xAs, double [] yAs,
2ad7ba85a2b3 Work in progress: Added polygon to help creating 'Raum/Flaeche' renderers. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	350 double [] xBs, double [] yBs,
2ad7ba85a2b3 Work in progress: Added polygon to help creating 'Raum/Flaeche' renderers. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	351 List<Polygon2D> positives,
2ad7ba85a2b3 Work in progress: Added polygon to help creating 'Raum/Flaeche' renderers. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	352 List<Polygon2D> negatives
2ad7ba85a2b3 Work in progress: Added polygon to help creating 'Raum/Flaeche' renderers. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	353 ) {
2ad7ba85a2b3 Work in progress: Added polygon to help creating 'Raum/Flaeche' renderers. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	354 if (xAs.length == 0 \|\| xBs.length == 0) {
2ad7ba85a2b3 Work in progress: Added polygon to help creating 'Raum/Flaeche' renderers. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	355 return;
2ad7ba85a2b3 Work in progress: Added polygon to help creating 'Raum/Flaeche' renderers. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	356 }
2ad7ba85a2b3 Work in progress: Added polygon to help creating 'Raum/Flaeche' renderers. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	357
2ad7ba85a2b3 Work in progress: Added polygon to help creating 'Raum/Flaeche' renderers. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	358 List<Point2D []> splAs = splitByNaNs(xAs, yAs);
2ad7ba85a2b3 Work in progress: Added polygon to help creating 'Raum/Flaeche' renderers. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	359 List<Point2D []> splBs = splitByNaNs(xBs, yBs);
2ad7ba85a2b3 Work in progress: Added polygon to help creating 'Raum/Flaeche' renderers. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	360
2ad7ba85a2b3 Work in progress: Added polygon to help creating 'Raum/Flaeche' renderers. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	361 // They feeded us with NaNs only.
2ad7ba85a2b3 Work in progress: Added polygon to help creating 'Raum/Flaeche' renderers. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	362 if (splAs.isEmpty() \|\| splBs.isEmpty()) {
2ad7ba85a2b3 Work in progress: Added polygon to help creating 'Raum/Flaeche' renderers. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	363 return;
2ad7ba85a2b3 Work in progress: Added polygon to help creating 'Raum/Flaeche' renderers. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	364 }
2ad7ba85a2b3 Work in progress: Added polygon to help creating 'Raum/Flaeche' renderers. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	365
2ad7ba85a2b3 Work in progress: Added polygon to help creating 'Raum/Flaeche' renderers. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	366 // Sort each part by x to ensure that the first
2ad7ba85a2b3 Work in progress: Added polygon to help creating 'Raum/Flaeche' renderers. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	367 // is the smallest.
2ad7ba85a2b3 Work in progress: Added polygon to help creating 'Raum/Flaeche' renderers. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	368 for (Point2D [] splA: splAs) {
2ad7ba85a2b3 Work in progress: Added polygon to help creating 'Raum/Flaeche' renderers. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	369 Arrays.sort(splA, POINT_X_CMP);
2ad7ba85a2b3 Work in progress: Added polygon to help creating 'Raum/Flaeche' renderers. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	370 }
2ad7ba85a2b3 Work in progress: Added polygon to help creating 'Raum/Flaeche' renderers. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	371
2ad7ba85a2b3 Work in progress: Added polygon to help creating 'Raum/Flaeche' renderers. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	372 for (Point2D [] splB: splBs) {
2ad7ba85a2b3 Work in progress: Added polygon to help creating 'Raum/Flaeche' renderers. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	373 Arrays.sort(splB, POINT_X_CMP);
2ad7ba85a2b3 Work in progress: Added polygon to help creating 'Raum/Flaeche' renderers. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	374 }
2ad7ba85a2b3 Work in progress: Added polygon to help creating 'Raum/Flaeche' renderers. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	375
2ad7ba85a2b3 Work in progress: Added polygon to help creating 'Raum/Flaeche' renderers. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	376 // Now sort all parts by there first elements.
2ad7ba85a2b3 Work in progress: Added polygon to help creating 'Raum/Flaeche' renderers. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	377 // Should be good enough to find overlapping regions.
2ad7ba85a2b3 Work in progress: Added polygon to help creating 'Raum/Flaeche' renderers. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	378 Collections.sort(splAs, FIRST_POINT_X);
2ad7ba85a2b3 Work in progress: Added polygon to help creating 'Raum/Flaeche' renderers. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	379 Collections.sort(splBs, FIRST_POINT_X);
2ad7ba85a2b3 Work in progress: Added polygon to help creating 'Raum/Flaeche' renderers. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	380
2ad7ba85a2b3 Work in progress: Added polygon to help creating 'Raum/Flaeche' renderers. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	381 // Check if the two series intersect at all.
2ad7ba85a2b3 Work in progress: Added polygon to help creating 'Raum/Flaeche' renderers. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	382 // If no then there will be no area between them.
2ad7ba85a2b3 Work in progress: Added polygon to help creating 'Raum/Flaeche' renderers. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	383
2ad7ba85a2b3 Work in progress: Added polygon to help creating 'Raum/Flaeche' renderers. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	384 Point2D [] p1 = splAs.get(0);
2ad7ba85a2b3 Work in progress: Added polygon to help creating 'Raum/Flaeche' renderers. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	385 Point2D [] p2 = splBs.get(splBs.size()-1);
2ad7ba85a2b3 Work in progress: Added polygon to help creating 'Raum/Flaeche' renderers. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	386
1795 fe7f9264a2ed Interim checkin for polygon calculation. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 1794 diff changeset	387 // Sort out the ranges that are not intersecting
fe7f9264a2ed Interim checkin for polygon calculation. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 1794 diff changeset	388 // the ranges in the other series.
fe7f9264a2ed Interim checkin for polygon calculation. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 1794 diff changeset	389 // We are going to merge them anyway
fe7f9264a2ed Interim checkin for polygon calculation. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 1794 diff changeset	390 // so this is not strictly required.
fe7f9264a2ed Interim checkin for polygon calculation. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 1794 diff changeset	391 // Keep it to recude cases.
fe7f9264a2ed Interim checkin for polygon calculation. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 1794 diff changeset	392 if (removeNoneIntersecting(splAs, splBs)
fe7f9264a2ed Interim checkin for polygon calculation. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 1794 diff changeset	393 \|\| removeNoneIntersecting(splBs, splAs)
fe7f9264a2ed Interim checkin for polygon calculation. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 1794 diff changeset	394 ) {
fe7f9264a2ed Interim checkin for polygon calculation. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 1794 diff changeset	395 // They do not intersect at all.
1794 2ad7ba85a2b3 Work in progress: Added polygon to help creating 'Raum/Flaeche' renderers. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	396 return;
2ad7ba85a2b3 Work in progress: Added polygon to help creating 'Raum/Flaeche' renderers. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	397 }
2ad7ba85a2b3 Work in progress: Added polygon to help creating 'Raum/Flaeche' renderers. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	398
2ad7ba85a2b3 Work in progress: Added polygon to help creating 'Raum/Flaeche' renderers. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	399 // TODO: Intersect/split the two series parts.
2ad7ba85a2b3 Work in progress: Added polygon to help creating 'Raum/Flaeche' renderers. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	400 }
2ad7ba85a2b3 Work in progress: Added polygon to help creating 'Raum/Flaeche' renderers. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	401 }
2ad7ba85a2b3 Work in progress: Added polygon to help creating 'Raum/Flaeche' renderers. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	402 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 :

Mercurial > dive4elements > river

annotate flys-artifacts/src/main/java/de/intevation/flys/artifacts/geom/Polygon2D.java @ 1799:281b9430c720