Mercurial > dive4elements > gnv-client
annotate gnv-artifacts/src/main/java/de/intevation/gnv/utils/IndexBuffer.java @ 505:7ff916744f40
Solved issue152. Time intervals of timeseries axis are defined by JFreeChart automatically.
gnv-artifacts/trunk@588 c6561f87-3c4e-4783-a992-168aeb5c3f6f
author | Ingo Weinzierl <ingo.weinzierl@intevation.de> |
---|---|
date | Wed, 20 Jan 2010 17:54:48 +0000 |
parents | 555483213f78 |
children | b1f5f2a8840f |
rev | line source |
---|---|
349
555483213f78
Added buffer creator in index (i, j) space.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
1 package de.intevation.gnv.utils; |
555483213f78
Added buffer creator in index (i, j) space.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
2 |
555483213f78
Added buffer creator in index (i, j) space.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
3 import java.awt.geom.Point2D; |
555483213f78
Added buffer creator in index (i, j) space.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
4 |
555483213f78
Added buffer creator in index (i, j) space.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
5 import java.awt.Point; |
555483213f78
Added buffer creator in index (i, j) space.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
6 |
555483213f78
Added buffer creator in index (i, j) space.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
7 import java.util.List; |
555483213f78
Added buffer creator in index (i, j) space.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
8 |
555483213f78
Added buffer creator in index (i, j) space.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
9 /** |
555483213f78
Added buffer creator in index (i, j) space.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
10 * 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
|
11 * |
555483213f78
Added buffer creator in index (i, j) space.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
12 * @author Sascha L. Teichmann (sascha.teichmann@intevation.de) |
555483213f78
Added buffer creator in index (i, j) space.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
13 */ |
555483213f78
Added buffer creator in index (i, j) space.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
14 public class IndexBuffer |
555483213f78
Added buffer creator in index (i, j) space.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
15 { |
555483213f78
Added buffer creator in index (i, j) space.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
16 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
|
17 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
|
18 |
555483213f78
Added buffer creator in index (i, j) space.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
19 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
|
20 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
|
21 |
555483213f78
Added buffer creator in index (i, j) space.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
22 public static final class Segment { |
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 private Segment next; |
555483213f78
Added buffer creator in index (i, j) space.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
25 |
555483213f78
Added buffer creator in index (i, j) space.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
26 private Point2D.Double n; |
555483213f78
Added buffer creator in index (i, j) space.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
27 private double d1; |
555483213f78
Added buffer creator in index (i, j) space.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
28 private double d2; |
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 private int iMin; |
555483213f78
Added buffer creator in index (i, j) space.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
31 private int iMax; |
555483213f78
Added buffer creator in index (i, j) space.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
32 |
555483213f78
Added buffer creator in index (i, j) space.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
33 private int jMin; |
555483213f78
Added buffer creator in index (i, j) space.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
34 private int jMax; |
555483213f78
Added buffer creator in index (i, j) space.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
35 |
555483213f78
Added buffer creator in index (i, j) space.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
36 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
|
37 |
555483213f78
Added buffer creator in index (i, j) space.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
38 this.next = next; |
555483213f78
Added buffer creator in index (i, j) space.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
39 |
555483213f78
Added buffer creator in index (i, j) space.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
40 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
|
41 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
|
42 |
555483213f78
Added buffer creator in index (i, j) space.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
43 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
|
44 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
|
45 |
555483213f78
Added buffer creator in index (i, j) space.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
46 if (a.x > b.x) { |
555483213f78
Added buffer creator in index (i, j) space.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
47 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
|
48 } |
555483213f78
Added buffer creator in index (i, j) space.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
49 |
555483213f78
Added buffer creator in index (i, j) space.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
50 Point2D.Double p1, p2, p3; |
555483213f78
Added buffer creator in index (i, j) space.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
51 |
555483213f78
Added buffer creator in index (i, j) space.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
52 if (a.y < b.y) { |
555483213f78
Added buffer creator in index (i, j) space.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
53 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
|
54 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
|
55 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
|
56 } |
555483213f78
Added buffer creator in index (i, j) space.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
57 else { |
555483213f78
Added buffer creator in index (i, j) space.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
58 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
|
59 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
|
60 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
|
61 } |
555483213f78
Added buffer creator in index (i, j) space.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
62 |
555483213f78
Added buffer creator in index (i, j) space.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
63 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
|
64 |
555483213f78
Added buffer creator in index (i, j) space.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
65 d1 = dot(n, p1); |
555483213f78
Added buffer creator in index (i, j) space.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
66 d2 = dot(n, p3); |
555483213f78
Added buffer creator in index (i, j) space.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
67 |
555483213f78
Added buffer creator in index (i, j) space.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
68 if (d1 > d2) { |
555483213f78
Added buffer creator in index (i, j) space.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
69 double d = d1; |
555483213f78
Added buffer creator in index (i, j) space.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
70 d1 = d2; |
555483213f78
Added buffer creator in index (i, j) space.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
71 d2 = d; |
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 } |
555483213f78
Added buffer creator in index (i, j) space.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
74 |
555483213f78
Added buffer creator in index (i, j) space.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
75 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
|
76 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
|
77 return false; |
555483213f78
Added buffer creator in index (i, j) space.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
78 } |
555483213f78
Added buffer creator in index (i, j) space.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
79 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
|
80 return v >= d1 && v <= d2; |
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 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
|
84 sb.append('(') |
555483213f78
Added buffer creator in index (i, j) space.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
85 .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
|
86 .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
|
87 .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
|
88 .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
|
89 .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
|
90 .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
|
91 .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
|
92 } |
555483213f78
Added buffer creator in index (i, j) space.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
93 } // class Segment |
555483213f78
Added buffer creator in index (i, j) space.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
94 |
555483213f78
Added buffer creator in index (i, j) space.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
95 protected Segment head; |
555483213f78
Added buffer creator in index (i, j) space.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
96 |
555483213f78
Added buffer creator in index (i, j) space.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
97 protected String iColumn; |
555483213f78
Added buffer creator in index (i, j) space.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
98 protected String jColumn; |
555483213f78
Added buffer creator in index (i, j) space.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
99 |
555483213f78
Added buffer creator in index (i, j) space.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
100 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
|
101 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
|
102 } |
555483213f78
Added buffer creator in index (i, j) space.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
103 |
555483213f78
Added buffer creator in index (i, j) space.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
104 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
|
105 this.iColumn = iColumn; |
555483213f78
Added buffer creator in index (i, j) space.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
106 this.jColumn = 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 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
|
109 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
|
110 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
|
111 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
|
112 } |
555483213f78
Added buffer creator in index (i, j) space.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
113 } |
555483213f78
Added buffer creator in index (i, j) space.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
114 |
555483213f78
Added buffer creator in index (i, j) space.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
115 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
|
116 |
555483213f78
Added buffer creator in index (i, j) space.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
117 Segment current = head; |
555483213f78
Added buffer creator in index (i, j) space.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
118 while (current != null) { |
555483213f78
Added buffer creator in index (i, j) space.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
119 if (current.check(i, j)) { |
555483213f78
Added buffer creator in index (i, j) space.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
120 return true; |
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 current = current.next; |
555483213f78
Added buffer creator in index (i, j) space.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
123 } |
555483213f78
Added buffer creator in index (i, j) space.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
124 return false; |
555483213f78
Added buffer creator in index (i, j) space.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
125 } |
555483213f78
Added buffer creator in index (i, j) space.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
126 |
555483213f78
Added buffer creator in index (i, j) space.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
127 public String toWhereClause() { |
555483213f78
Added buffer creator in index (i, j) space.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
128 |
555483213f78
Added buffer creator in index (i, j) space.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
129 StringBuilder sb = new StringBuilder(); |
555483213f78
Added buffer creator in index (i, j) space.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
130 |
555483213f78
Added buffer creator in index (i, j) space.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
131 Segment current = head; |
555483213f78
Added buffer creator in index (i, j) space.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
132 |
555483213f78
Added buffer creator in index (i, j) space.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
133 while (current != null) { |
555483213f78
Added buffer creator in index (i, j) space.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
134 if (current != head) { |
555483213f78
Added buffer creator in index (i, j) space.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
135 sb.append(" OR "); |
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 current.toWhereClause(sb, iColumn, jColumn); |
555483213f78
Added buffer creator in index (i, j) space.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
138 current = current.next; |
555483213f78
Added buffer creator in index (i, j) space.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
139 } |
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 return sb.toString(); |
555483213f78
Added buffer creator in index (i, j) space.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
142 } |
555483213f78
Added buffer creator in index (i, j) space.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
143 |
555483213f78
Added buffer creator in index (i, j) space.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
144 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
|
145 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
|
146 } |
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 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
|
149 return 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
|
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 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
|
153 return p1.x*x + p1.y*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 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
|
157 return new Point2D.Double(s*p.x, s*p.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 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
|
161 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
|
162 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
|
163 } |
555483213f78
Added buffer creator in index (i, j) space.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
164 |
555483213f78
Added buffer creator in index (i, j) space.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
165 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
|
166 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
|
167 } |
555483213f78
Added buffer creator in index (i, j) space.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
168 } |
555483213f78
Added buffer creator in index (i, j) space.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
169 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8: |