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41 package java2d.demos.Mix;
42
43 import java.awt.*;
44 import java.awt.event.*;
45 import java.awt.geom.*;
46 import java.awt.font.FontRenderContext  ;
47 import javax.swing.*;
48 import java2d.ControlsSurface;
49 import java2d.CustomControls;
50
51 import static java.awt.Color .*;
52
53
54
58 public class Stars3D extends ControlsSurface {
59
60 private static Color colors[] = { RED, GREEN, WHITE };
61 private static AffineTransform at = AffineTransform.getTranslateInstance(-5, -5);
62 private Shape shape, tshape;
63 private Shape ribbon;
64 protected int fontSize = 72;
65 protected String text = "Java2D";
66 protected int numStars = 300;
67 private DemoControls controls;
68
69
70 public Stars3D() {
71 setBackground(BLACK);
72 setControls(new Component[] { new DemoControls(this) });
73 }
74
75
76 public void render(int w, int h, Graphics2D g2) {
77
78 Rectangle2D rect = new Rectangle2D.Double();
79 for (int i = 0; i < numStars; i++) {
80 g2.setColor(colors[i%3]);
81 g2.setComposite(AlphaComposite.getInstance(
82 AlphaComposite.SRC_OVER, (float) Math.random()));
83 rect.setRect(w*Math.random(), h*Math.random(),2,2);
84 g2.fill(rect);
85 }
86
87 FontRenderContext frc = g2.getFontRenderContext();
88 Font font = new Font("serif.bolditalic", Font.PLAIN, fontSize);
89 shape = font.createGlyphVector(frc, text).getOutline();
90 tshape = at.createTransformedShape(shape);
91 PathIterator pi = shape.getPathIterator(null);
92
93 float seg[] = new float[6];
94 float tseg[] = new float[6];
95
96 GeneralPath working = new GeneralPath(GeneralPath.WIND_NON_ZERO);
97 float x=0, y=0; float tx=0, ty=0; float cx=0, cy=0; float tcx=0, tcy=0;
102 while(!pi.isDone()) {
107 int segType = pi.currentSegment(seg);
108 switch(segType) {
109 case PathIterator.SEG_MOVETO:
110 at.transform(seg, 0, tseg, 0, 1);
111 x = seg[0];
112 y = seg[1];
113 tx = tseg[0];
114 ty = tseg[1];
115 cx = x;
116 cy = y;
117 tcx = tx;
118 tcy = ty;
119 break;
120 case PathIterator.SEG_LINETO:
121 at.transform(seg, 0, tseg, 0, 1);
122 if (Line2D.relativeCCW(x, y, tx, ty, seg[0], seg[1]) < 0) {
123 working.moveTo(x, y);
124 working.lineTo( seg[0], seg[1]);
125 working.lineTo(tseg[0], tseg[1]);
126 working.lineTo(tx, ty);
127 working.lineTo( x, y);
128 } else {
129 working.moveTo( x, y);
130 working.lineTo(tx, ty);
131 working.lineTo(tseg[0], tseg[1]);
132 working.lineTo( seg[0], seg[1]);
133 working.lineTo(x, y);
134 }
135
136 x = seg[0];
137 y = seg[1];
138 tx = tseg[0];
139 ty = tseg[1];
140 break;
141
142 case PathIterator.SEG_QUADTO:
143 at.transform(seg, 0, tseg, 0, 2);
144 if (Line2D.relativeCCW(x, y, tx, ty, seg[2], seg[3]) < 0) {
145 working.moveTo(x, y);
146 working.quadTo( seg[0], seg[1],
147 seg[2], seg[3]);
148 working.lineTo(tseg[2], tseg[3]);
149 working.quadTo(tseg[0], tseg[1],
150 tx, ty);
151 working.lineTo( x, y);
152 } else {
153 working.moveTo( x, y);
154 working.lineTo(tx, ty);
155 working.quadTo(tseg[0], tseg[1],
156 tseg[2], tseg[3]);
157 working.lineTo( seg[2], seg[3]);
158 working.quadTo( seg[0], seg[1],
159 x, y);
160 }
161
162 x = seg[2];
163 y = seg[3];
164 tx = tseg[2];
165 ty = tseg[3];
166 break;
167
168 case PathIterator.SEG_CUBICTO:
169 at.transform(seg, 0, tseg, 0, 3);
170 if (Line2D.relativeCCW(x, y, tx, ty, seg[4], seg[5]) < 0) {
171 working.moveTo(x, y);
172 working.curveTo( seg[0], seg[1],
173 seg[2], seg[3],
174 seg[4], seg[5]);
175 working.lineTo( tseg[4], tseg[5]);
176 working.curveTo(tseg[2], tseg[3],
177 tseg[0], tseg[1],
178 tx, ty);
179 working.lineTo(x, y);
180 } else {
181 working.moveTo(x, y);
182 working.lineTo(tx, ty);
183 working.curveTo(tseg[0], tseg[1],
184 tseg[2], tseg[3],
185 tseg[4], tseg[5]);
186 working.lineTo( seg[4], seg[5]);
187 working.curveTo( seg[2], seg[3],
188 seg[0], seg[1],
189 x, y);
190 }
191
192 x = seg[4];
193 y = seg[5];
194 tx = tseg[4];
195 ty = tseg[5];
196 break;
197
198 case PathIterator.SEG_CLOSE:
199 if (Line2D.relativeCCW(x, y, tx, ty, cx, cy) < 0) {
200 working.moveTo( x, y);
201 working.lineTo( cx, cy);
202 working.lineTo(tcx, tcy);
203 working.lineTo( tx, ty);
204 working.lineTo( x, y);
205 } else {
206 working.moveTo( x, y);
207 working.lineTo( tx, ty);
208 working.lineTo(tcx, tcy);
209 working.lineTo( cx, cy);
210 working.lineTo( x, y);
211 }
212 x = cx;
213 y = cy;
214 tx = tcx;
215 ty = tcy;
216 }
217 pi.next();
218 } ribbon = working;
220
221 if (composite != null) {
222 g2.setComposite(composite);
223 } else {
224 g2.setComposite(AlphaComposite.SrcOver);
225 }
226 Rectangle r = shape.getBounds();
227 g2.translate(w*.5-r.width*.5,h*.5+r.height*.5);
228
229 g2.setColor(BLUE);
230 g2.fill(tshape);
231 g2.setColor(new Color (255, 255, 255, 200));
232 g2.fill(ribbon);
233
234 g2.setColor(WHITE);
235 g2.fill(shape);
236
237 g2.setColor(BLUE);
238 g2.draw(shape);
239 }
240
241
242 public static void main(String argv[]) {
243 createDemoFrame(new Stars3D());
244 }
245
246
247 static class DemoControls extends CustomControls implements ActionListener {
248
249 Stars3D demo;
250 JTextField tf1, tf2;
251
252 public DemoControls(Stars3D demo) {
253 super(demo.name);
254 this.demo = demo;
255 JLabel l = new JLabel(" Text:");
256 l.setForeground(BLACK);
257 add(l);
258 add(tf1 = new JTextField(demo.text));
259 tf1.setPreferredSize(new Dimension(60,20));
260 tf1.addActionListener(this);
261 l = new JLabel(" Size:");
262 l.setForeground(BLACK);
263 add(l);
264 add(tf2 = new JTextField(String.valueOf(demo.fontSize)));
265 tf2.setPreferredSize(new Dimension(30,20));
266 tf2.addActionListener(this);
267 }
268
269 public void actionPerformed(ActionEvent e) {
270 try {
271 if (e.getSource().equals(tf1)) {
272 demo.text = tf1.getText().trim();
273 } else if (e.getSource().equals(tf2)) {
274 demo.fontSize = Integer.parseInt(tf2.getText().trim());
275 if (demo.fontSize < 10) {
276 demo.fontSize = 10;
277 }
278 }
279 demo.repaint();
280 } catch (Exception ex) {}
281 }
282
283 public Dimension getPreferredSize() {
284 return new Dimension(200,37);
285 }
286
287
288 public void run() {
289 Thread me = Thread.currentThread();
290 try { thread.sleep(999); } catch (Exception e) { return; }
291 int length = getSize().width / 4;
292 int size[] = { length, length };
293 String str[] = { "JAVA", "J2D" };
294 while (thread == me) {
295 for (int i = 0; i < str.length; i++) {
296 demo.fontSize = size[i];
297 tf2.setText(String.valueOf(demo.fontSize));
298 tf1.setText(demo.text = str[i]);
299 demo.repaint();
300 try {
301 thread.sleep(5555);
302 } catch (InterruptedException e) { return; }
303 }
304 }
305 thread = null;
306 }
307 } } |
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