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1
26
27 package org.nightlabs.editor2d.util;
28
29 import java.awt.geom.AffineTransform  ;
30 import java.awt.geom.Point2D ;
31 import java.util.Comparator ;
32 import java.util.List ;
33
34 import org.nightlabs.editor2d.DrawComponent;
35 import org.nightlabs.editor2d.PositionConstants;
36 import org.nightlabs.math.MathUtil;
37
38 public class EditorModelUtil
39 {
40 public EditorModelUtil() {
41 super();
42 }
43
44 public static boolean checkAlignment(int alignment)
45 {
46 if (alignment == PositionConstants.ALIGNMENT_LEFT ||
47 alignment == PositionConstants.ALIGNMENT_CENTER ||
48 alignment == PositionConstants.ALIGNMENT_RIGHT)
49 {
50 return true;
51 }
52 else
53 throw new IllegalArgumentException ("Param alignment = "+alignment+" is not valid!");
54 }
55
56 public static void alignDrawComponents(List drawComponents, double distance, int alignment)
57 {
58 checkAlignment(alignment);
59 if (drawComponents != null)
60 {
61 DrawComponent firstDC = null;
62 DrawComponent lastDC = null;
63 Point2D firstPoint = null;
64 Point2D lastPoint = null;
65 if (alignment == PositionConstants.ALIGNMENT_LEFT)
66 {
67 firstDC = (DrawComponent) drawComponents.get(drawComponents.size()-1);
68 lastDC = (DrawComponent) drawComponents.get(0);
69 firstPoint = new Point2D.Double (firstDC.getBounds().getMinX(), firstDC.getBounds().getMinY());
70 lastPoint = new Point2D.Double (lastDC.getBounds().getMinX(), lastDC.getBounds().getMinY());
71 for (int i=drawComponents.size()-1; i>=0; i--)
72 {
73 DrawComponent dc = (DrawComponent) drawComponents.get(i);
74 Point2D p = MathUtil.getPointOnLineWithDistance(firstPoint, lastPoint, distance * i);
75 dc.setLocation((int)p.getX(), (int)p.getY());
76 }
77 }
78 else if (alignment == PositionConstants.ALIGNMENT_RIGHT)
79 {
80 firstDC = (DrawComponent) drawComponents.get(0);
81 lastDC = (DrawComponent) drawComponents.get(drawComponents.size()-1);
82 firstPoint = new Point2D.Double (firstDC.getBounds().getMinX(), firstDC.getBounds().getMinY());
83 lastPoint = new Point2D.Double (lastDC.getBounds().getMinX(), lastDC.getBounds().getMinY());
84 for (int i=drawComponents.size()-1; i>=0; i--)
85 {
86 DrawComponent dc = (DrawComponent) drawComponents.get(i);
87 Point2D p = MathUtil.getPointOnLineWithDistance(firstPoint, lastPoint, distance * i);
88 dc.setLocation((int)p.getX(), (int)p.getY());
89 }
90 }
91 else if (alignment == PositionConstants.ALIGNMENT_CENTER)
92 {
93 }
95 }
96 }
97
98 protected static double[] matrix = new double[6];
99 public static AffineTransform checkAffineTransform(AffineTransform at)
100 {
101 at.getMatrix(matrix);
102 for (int i=0; i<matrix.length; i++) {
103 matrix[i] = checkFactor(matrix[i]);
104 }
105 return new AffineTransform (matrix);
106 }
107
108 public static double checkFactor(double factor)
109 {
110 if (Double.isInfinite(factor) || Double.isNaN(factor))
111 factor = 1d;
112
113 return factor;
114 }
115
116 public static float checkFactor(float factor)
117 {
118 if (Float.isInfinite(factor) || Float.isNaN(factor))
119 factor = 1f;
120
121 return factor;
122 }
123
124 public static double getConstrainedValue(double value, double limit)
125 {
126 if (value > limit || value < -limit) {
127 return value%limit;
128 }
129 return value;
130 }
131
132 public static double calcDiffRotation(double newRotation, double oldRotation)
133 {
134 double degreesToRotate = 0;
135 newRotation = getConstrainedValue(newRotation, 360.0d);
136
137 if (newRotation == 0)
138 degreesToRotate = -oldRotation;
139 else if (newRotation <= oldRotation)
140 degreesToRotate = -(oldRotation - newRotation);
141 else
142 degreesToRotate = newRotation - oldRotation;
143
144
148 return degreesToRotate;
149 }
150
165
173 public static java.awt.Point getLeftTopCenterLocation(java.awt.Rectangle r1, java.awt.Rectangle r2)
174 {
175 int diffWidth;
176 if (r1.width > r2.width)
177 diffWidth = (r1.width - r2.width) / 2;
178 else
179 diffWidth = (r2.width - r1.width) / 2;
180
181 int diffHeight;
182 if (r1.height > r2.height)
183 diffHeight = (r1.height - r2.height) / 2;
184 else
185 diffHeight = (r2.height - r1.height) / 2;
186
187 int diffX;
188 if (r1.x > r2.x)
189 diffX = r1.x - r2.x;
190 else
191 diffX = r2.x - r1.x;
192
193 int diffY;
194 if (r1.y > r2.y)
195 diffY = r1.y - r2.y;
196 else
197 diffY = r2.y - r1.y;
198
199 return new java.awt.Point (diffX + diffWidth, diffY + diffHeight);
200 }
201
202 public static Comparator idComparator = new Comparator ()
203 {
204 public int compare(Object arg0, Object arg1)
205 {
206 if (arg0 instanceof DrawComponent && arg1 instanceof DrawComponent)
207 {
208 DrawComponent dc1 = (DrawComponent) arg0;
209 DrawComponent dc2 = (DrawComponent) arg1;
210 if (dc1.getId() < dc2.getId())
211 return -1;
212 if (dc1.getId() > dc2.getId())
213 return 1;
214 }
215 return 0;
216 }
217 };
218 }
219 |
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