dive4elements/gnv-client: gnv-artifacts/src/main/java/de/intevation/gnv/utils/IndexBuffer.java annotate

annotate gnv-artifacts/src/main/java/de/intevation/gnv/utils/IndexBuffer.java @ 1115:f953c9a559d8

Added license file and license headers. gnv-artifacts/trunk@1260 c6561f87-3c4e-4783-a992-168aeb5c3f6f

author	Ingo Weinzierl <ingo.weinzierl@intevation.de>
date	Tue, 02 Nov 2010 17:46:55 +0000
parents	6cff63d0c434
children

rev	line source
1115 f953c9a559d8 Added license file and license headers. Ingo Weinzierl <ingo.weinzierl@intevation.de> parents: 798 diff changeset	1 /*
f953c9a559d8 Added license file and license headers. Ingo Weinzierl <ingo.weinzierl@intevation.de> parents: 798 diff changeset	2 * Copyright (c) 2010 by Intevation GmbH
f953c9a559d8 Added license file and license headers. Ingo Weinzierl <ingo.weinzierl@intevation.de> parents: 798 diff changeset	3 *
f953c9a559d8 Added license file and license headers. Ingo Weinzierl <ingo.weinzierl@intevation.de> parents: 798 diff changeset	4 * This program is free software under the LGPL (>=v2.1)
f953c9a559d8 Added license file and license headers. Ingo Weinzierl <ingo.weinzierl@intevation.de> parents: 798 diff changeset	5 * Read the file LGPL.txt coming with the software for details
f953c9a559d8 Added license file and license headers. Ingo Weinzierl <ingo.weinzierl@intevation.de> parents: 798 diff changeset	6 * or visit http://www.gnu.org/licenses/ if it does not exist.
f953c9a559d8 Added license file and license headers. Ingo Weinzierl <ingo.weinzierl@intevation.de> parents: 798 diff changeset	7 */
f953c9a559d8 Added license file and license headers. Ingo Weinzierl <ingo.weinzierl@intevation.de> parents: 798 diff changeset	8
349 555483213f78 Added buffer creator in index (i, j) space. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	9 package de.intevation.gnv.utils;
555483213f78 Added buffer creator in index (i, j) space. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	10
779 b1f5f2a8840f Ordered imports. Removed needless imports. Removed empty headers. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 349 diff changeset	11 import java.awt.Point;
b1f5f2a8840f Ordered imports. Removed needless imports. Removed empty headers. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 349 diff changeset	12
349 555483213f78 Added buffer creator in index (i, j) space. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	13 import java.awt.geom.Point2D;
555483213f78 Added buffer creator in index (i, j) space. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	14
555483213f78 Added buffer creator in index (i, j) space. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	15 import java.util.List;
555483213f78 Added buffer creator in index (i, j) space. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	16
555483213f78 Added buffer creator in index (i, j) space. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	17 /**
555483213f78 Added buffer creator in index (i, j) space. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	18 * Create buffers around integer pairs (i_1..n), j_1..n).
555483213f78 Added buffer creator in index (i, j) space. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	19 *
780 c4156275c1e1 Bring @author javadoc tags in form '@author <a href="john.doe@example.com">John Doe</a>' Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 779 diff changeset	20 * @author <a href="mailto:sascha.teichmann@intevation.de">Sascha L. Teichmann</a>
349 555483213f78 Added buffer creator in index (i, j) space. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	21 */
555483213f78 Added buffer creator in index (i, j) space. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	22 public class IndexBuffer
555483213f78 Added buffer creator in index (i, j) space. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	23 {
555483213f78 Added buffer creator in index (i, j) space. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	24 public static final double EPSILON = 1e-6d;
555483213f78 Added buffer creator in index (i, j) space. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	25 public static final double OFFSET = 1.0d;
555483213f78 Added buffer creator in index (i, j) space. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	26
555483213f78 Added buffer creator in index (i, j) space. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	27 public static final String I_COLUMN = "IPOSITION";
555483213f78 Added buffer creator in index (i, j) space. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	28 public static final String J_COLUMN = "JPOSITION";
555483213f78 Added buffer creator in index (i, j) space. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	29
555483213f78 Added buffer creator in index (i, j) space. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	30 public static final class Segment {
555483213f78 Added buffer creator in index (i, j) space. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	31
555483213f78 Added buffer creator in index (i, j) space. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	32 private Segment next;
555483213f78 Added buffer creator in index (i, j) space. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	33
555483213f78 Added buffer creator in index (i, j) space. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	34 private Point2D.Double n;
555483213f78 Added buffer creator in index (i, j) space. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	35 private double d1;
555483213f78 Added buffer creator in index (i, j) space. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	36 private double d2;
555483213f78 Added buffer creator in index (i, j) space. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	37
555483213f78 Added buffer creator in index (i, j) space. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	38 private int iMin;
555483213f78 Added buffer creator in index (i, j) space. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	39 private int iMax;
555483213f78 Added buffer creator in index (i, j) space. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	40
555483213f78 Added buffer creator in index (i, j) space. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	41 private int jMin;
555483213f78 Added buffer creator in index (i, j) space. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	42 private int jMax;
555483213f78 Added buffer creator in index (i, j) space. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	43
555483213f78 Added buffer creator in index (i, j) space. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	44 public Segment(Point a, Point b, Segment next) {
555483213f78 Added buffer creator in index (i, j) space. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	45
555483213f78 Added buffer creator in index (i, j) space. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	46 this.next = next;
555483213f78 Added buffer creator in index (i, j) space. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	47
555483213f78 Added buffer creator in index (i, j) space. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	48 iMin = Math.min(a.x, b.x)-1;
555483213f78 Added buffer creator in index (i, j) space. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	49 iMax = Math.max(a.x, b.x)+1;
555483213f78 Added buffer creator in index (i, j) space. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	50
555483213f78 Added buffer creator in index (i, j) space. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	51 jMin = Math.min(a.y, b.y)-1;
555483213f78 Added buffer creator in index (i, j) space. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	52 jMax = Math.max(a.y, b.y)+1;
555483213f78 Added buffer creator in index (i, j) space. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	53
555483213f78 Added buffer creator in index (i, j) space. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	54 if (a.x > b.x) {
555483213f78 Added buffer creator in index (i, j) space. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	55 Point p = a; a = b; b = p;
555483213f78 Added buffer creator in index (i, j) space. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	56 }
555483213f78 Added buffer creator in index (i, j) space. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	57
555483213f78 Added buffer creator in index (i, j) space. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	58 Point2D.Double p1, p2, p3;
555483213f78 Added buffer creator in index (i, j) space. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	59
555483213f78 Added buffer creator in index (i, j) space. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	60 if (a.y < b.y) {
555483213f78 Added buffer creator in index (i, j) space. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	61 p1 = new Point2D.Double(a.x - OFFSET, a.y + 1 + OFFSET);
555483213f78 Added buffer creator in index (i, j) space. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	62 p2 = new Point2D.Double(b.x - OFFSET, b.y + 1 + OFFSET);
555483213f78 Added buffer creator in index (i, j) space. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	63 p3 = new Point2D.Double(a.x + 1 + OFFSET, a.y - OFFSET);
555483213f78 Added buffer creator in index (i, j) space. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	64 }
555483213f78 Added buffer creator in index (i, j) space. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	65 else {
555483213f78 Added buffer creator in index (i, j) space. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	66 p1 = new Point2D.Double(a.x + 1 + OFFSET, a.y + 1 + OFFSET);
555483213f78 Added buffer creator in index (i, j) space. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	67 p2 = new Point2D.Double(b.x + 1 + OFFSET, b.y + 1 + OFFSET);
555483213f78 Added buffer creator in index (i, j) space. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	68 p3 = new Point2D.Double(b.x - OFFSET, b.y - OFFSET);
555483213f78 Added buffer creator in index (i, j) space. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	69 }
555483213f78 Added buffer creator in index (i, j) space. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	70
555483213f78 Added buffer creator in index (i, j) space. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	71 n = normalize(orthogonal(sub(p1, p2)));
555483213f78 Added buffer creator in index (i, j) space. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	72
555483213f78 Added buffer creator in index (i, j) space. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	73 d1 = dot(n, p1);
555483213f78 Added buffer creator in index (i, j) space. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	74 d2 = dot(n, p3);
555483213f78 Added buffer creator in index (i, j) space. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	75
555483213f78 Added buffer creator in index (i, j) space. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	76 if (d1 > d2) {
555483213f78 Added buffer creator in index (i, j) space. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	77 double d = d1;
555483213f78 Added buffer creator in index (i, j) space. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	78 d1 = d2;
555483213f78 Added buffer creator in index (i, j) space. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	79 d2 = d;
555483213f78 Added buffer creator in index (i, j) space. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	80 }
555483213f78 Added buffer creator in index (i, j) space. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	81 }
555483213f78 Added buffer creator in index (i, j) space. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	82
555483213f78 Added buffer creator in index (i, j) space. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	83 public boolean check(int i, int j) {
555483213f78 Added buffer creator in index (i, j) space. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	84 if (i < iMin \|\| i > iMax \|\| j < jMin \|\| j > jMax) {
555483213f78 Added buffer creator in index (i, j) space. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	85 return false;
555483213f78 Added buffer creator in index (i, j) space. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	86 }
555483213f78 Added buffer creator in index (i, j) space. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	87 double v = dot(n, i, j);
555483213f78 Added buffer creator in index (i, j) space. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	88 return v >= d1 && v <= d2;
555483213f78 Added buffer creator in index (i, j) space. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	89 }
555483213f78 Added buffer creator in index (i, j) space. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	90
555483213f78 Added buffer creator in index (i, j) space. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	91 public void toWhereClause(StringBuilder sb, String iColumn, String jColumn) {
555483213f78 Added buffer creator in index (i, j) space. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	92 sb.append('(')
555483213f78 Added buffer creator in index (i, j) space. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	93 .append(iColumn).append(" >= ").append(iMin).append(" AND ")
555483213f78 Added buffer creator in index (i, j) space. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	94 .append(iColumn).append(" <= ").append(iMax).append(" AND ")
555483213f78 Added buffer creator in index (i, j) space. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	95 .append(jColumn).append(" >= ").append(jMin).append(" AND ")
555483213f78 Added buffer creator in index (i, j) space. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	96 .append(jColumn).append(" <= ").append(jMax).append(" AND (")
555483213f78 Added buffer creator in index (i, j) space. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	97 .append(n.x).append('*').append(iColumn).append(" + ")
555483213f78 Added buffer creator in index (i, j) space. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	98 .append(n.y).append('*').append(jColumn)
555483213f78 Added buffer creator in index (i, j) space. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	99 .append(") BETWEEN ").append(d1).append(" AND ").append(d2).append(')');
555483213f78 Added buffer creator in index (i, j) space. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	100 }
555483213f78 Added buffer creator in index (i, j) space. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	101 } // class Segment
555483213f78 Added buffer creator in index (i, j) space. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	102
555483213f78 Added buffer creator in index (i, j) space. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	103 protected Segment head;
555483213f78 Added buffer creator in index (i, j) space. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	104
555483213f78 Added buffer creator in index (i, j) space. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	105 protected String iColumn;
555483213f78 Added buffer creator in index (i, j) space. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	106 protected String jColumn;
555483213f78 Added buffer creator in index (i, j) space. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	107
555483213f78 Added buffer creator in index (i, j) space. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	108 public IndexBuffer(List<? extends Point> points) {
555483213f78 Added buffer creator in index (i, j) space. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	109 this(points, I_COLUMN, J_COLUMN);
555483213f78 Added buffer creator in index (i, j) space. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	110 }
555483213f78 Added buffer creator in index (i, j) space. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	111
555483213f78 Added buffer creator in index (i, j) space. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	112 public IndexBuffer(List<? extends Point> points, String iColumn, String jColumn) {
555483213f78 Added buffer creator in index (i, j) space. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	113 this.iColumn = iColumn;
555483213f78 Added buffer creator in index (i, j) space. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	114 this.jColumn = jColumn;
555483213f78 Added buffer creator in index (i, j) space. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	115
555483213f78 Added buffer creator in index (i, j) space. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	116 for (int i = 1, N = points.size(); i < N; ++i) {
555483213f78 Added buffer creator in index (i, j) space. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	117 Point p1 = (Point)points.get(i-1);
555483213f78 Added buffer creator in index (i, j) space. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	118 Point p2 = (Point)points.get(i);
555483213f78 Added buffer creator in index (i, j) space. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	119 head = new Segment(p1, p2, head);
555483213f78 Added buffer creator in index (i, j) space. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	120 }
555483213f78 Added buffer creator in index (i, j) space. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	121 }
555483213f78 Added buffer creator in index (i, j) space. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	122
555483213f78 Added buffer creator in index (i, j) space. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	123 public boolean check(int i, int j) {
555483213f78 Added buffer creator in index (i, j) space. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	124
555483213f78 Added buffer creator in index (i, j) space. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	125 Segment current = head;
555483213f78 Added buffer creator in index (i, j) space. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	126 while (current != null) {
555483213f78 Added buffer creator in index (i, j) space. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	127 if (current.check(i, j)) {
555483213f78 Added buffer creator in index (i, j) space. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	128 return true;
555483213f78 Added buffer creator in index (i, j) space. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	129 }
555483213f78 Added buffer creator in index (i, j) space. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	130 current = current.next;
555483213f78 Added buffer creator in index (i, j) space. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	131 }
555483213f78 Added buffer creator in index (i, j) space. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	132 return false;
555483213f78 Added buffer creator in index (i, j) space. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	133 }
555483213f78 Added buffer creator in index (i, j) space. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	134
555483213f78 Added buffer creator in index (i, j) space. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	135 public String toWhereClause() {
555483213f78 Added buffer creator in index (i, j) space. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	136
555483213f78 Added buffer creator in index (i, j) space. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	137 StringBuilder sb = new StringBuilder();
555483213f78 Added buffer creator in index (i, j) space. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	138
555483213f78 Added buffer creator in index (i, j) space. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	139 Segment current = head;
555483213f78 Added buffer creator in index (i, j) space. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	140
555483213f78 Added buffer creator in index (i, j) space. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	141 while (current != null) {
555483213f78 Added buffer creator in index (i, j) space. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	142 if (current != head) {
555483213f78 Added buffer creator in index (i, j) space. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	143 sb.append(" OR ");
555483213f78 Added buffer creator in index (i, j) space. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	144 }
555483213f78 Added buffer creator in index (i, j) space. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	145 current.toWhereClause(sb, iColumn, jColumn);
555483213f78 Added buffer creator in index (i, j) space. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	146 current = current.next;
555483213f78 Added buffer creator in index (i, j) space. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	147 }
555483213f78 Added buffer creator in index (i, j) space. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	148
555483213f78 Added buffer creator in index (i, j) space. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	149 return sb.toString();
555483213f78 Added buffer creator in index (i, j) space. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	150 }
555483213f78 Added buffer creator in index (i, j) space. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	151
555483213f78 Added buffer creator in index (i, j) space. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	152 public static Point2D.Double sub(Point2D.Double p1, Point2D.Double p2) {
555483213f78 Added buffer creator in index (i, j) space. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	153 return new Point2D.Double(p1.x - p2.x, p1.y - p2.y);
555483213f78 Added buffer creator in index (i, j) space. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	154 }
555483213f78 Added buffer creator in index (i, j) space. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	155
555483213f78 Added buffer creator in index (i, j) space. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	156 public static final double dot(Point2D.Double p1, Point2D.Double p2) {
555483213f78 Added buffer creator in index (i, j) space. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	157 return p1.xp2.x + p1.yp2.y;
555483213f78 Added buffer creator in index (i, j) space. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	158 }
555483213f78 Added buffer creator in index (i, j) space. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	159
555483213f78 Added buffer creator in index (i, j) space. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	160 public static final double dot(Point2D.Double p1, double x, double y) {
555483213f78 Added buffer creator in index (i, j) space. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	161 return p1.xx + p1.yy;
555483213f78 Added buffer creator in index (i, j) space. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	162 }
555483213f78 Added buffer creator in index (i, j) space. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	163
555483213f78 Added buffer creator in index (i, j) space. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	164 public static final Point2D.Double scale(Point2D.Double p, double s) {
555483213f78 Added buffer creator in index (i, j) space. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	165 return new Point2D.Double(sp.x, sp.y);
555483213f78 Added buffer creator in index (i, j) space. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	166 }
555483213f78 Added buffer creator in index (i, j) space. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	167
555483213f78 Added buffer creator in index (i, j) space. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	168 public static final Point2D.Double normalize(Point2D.Double p) {
555483213f78 Added buffer creator in index (i, j) space. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	169 double len2 = Math.sqrt(dot(p, p));
555483213f78 Added buffer creator in index (i, j) space. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	170 return len2 > EPSILON ? scale(p, 1d/len2) : p;
555483213f78 Added buffer creator in index (i, j) space. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	171 }
555483213f78 Added buffer creator in index (i, j) space. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	172
555483213f78 Added buffer creator in index (i, j) space. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	173 public static final Point2D.Double orthogonal(Point2D.Double p) {
555483213f78 Added buffer creator in index (i, j) space. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	174 return new Point2D.Double(p.y, -p.x);
555483213f78 Added buffer creator in index (i, j) space. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	175 }
555483213f78 Added buffer creator in index (i, j) space. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	176 }
798 6cff63d0c434 Fixed vim modeline. Added some Javadoc. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 780 diff changeset	177 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 :

Mercurial > dive4elements > gnv-client

annotate gnv-artifacts/src/main/java/de/intevation/gnv/utils/IndexBuffer.java @ 1115:f953c9a559d8