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270 lines
9.2 KiB
270 lines
9.2 KiB
/* |
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* Copyright 2007-2008 Sun Microsystems, Inc. All Rights Reserved. |
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* |
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* Redistribution and use in source and binary forms, with or without |
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* modification, are permitted provided that the following conditions |
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* are met: |
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* |
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* - Redistributions of source code must retain the above copyright |
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* notice, this list of conditions and the following disclaimer. |
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* |
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* - Redistributions in binary form must reproduce the above copyright |
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* notice, this list of conditions and the following disclaimer in the |
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* documentation and/or other materials provided with the distribution. |
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* |
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* - Neither the name of Sun Microsystems nor the names of its |
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* contributors may be used to endorse or promote products derived |
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* from this software without specific prior written permission. |
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* |
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS |
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* IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, |
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* THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR |
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR |
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* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, |
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* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, |
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* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR |
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* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF |
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* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING |
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* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS |
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* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
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*/ |
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package com.sun.swingset3.demos.colorchooser; |
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import java.awt.*; |
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import java.awt.event.HierarchyEvent; |
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import java.awt.event.HierarchyListener; |
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import java.awt.geom.GeneralPath; |
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import java.awt.image.BufferedImage; |
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import java.util.Hashtable; |
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import java.util.Map; |
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import javax.swing.*; |
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import static com.sun.swingset3.demos.colorchooser.BezierAnimationPanel.BezierColor.*; |
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/** |
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* BezierAnimationPanel |
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* |
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* @author Jim Graham |
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* @author Jeff Dinkins (removed dynamic setting changes, made swing friendly) |
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* @version 1.16 11/17/05 |
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*/ |
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class BezierAnimationPanel extends JPanel implements Runnable { |
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public enum BezierColor { |
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BACKGROUND, |
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OUTER, |
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GRADIENT_A, |
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GRADIENT_B |
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} |
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private final Map<BezierColor, Color> colors = new Hashtable<BezierColor, Color>(); |
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private GradientPaint gradient = null; |
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private static final int NUMPTS = 6; |
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private final float[] animpts = new float[NUMPTS * 2]; |
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private final float[] deltas = new float[NUMPTS * 2]; |
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private BufferedImage img; |
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private Thread anim; |
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private final Object lock = new Object(); |
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/** |
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* BezierAnimationPanel Constructor |
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*/ |
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public BezierAnimationPanel() { |
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setOpaque(true); |
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colors.put(BACKGROUND, new Color(0, 0, 153)); |
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colors.put(OUTER, new Color(255, 255, 255)); |
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colors.put(GRADIENT_A, new Color(255, 0, 101)); |
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colors.put(GRADIENT_B, new Color(255, 255, 0)); |
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addHierarchyListener(new HierarchyListener() { |
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public void hierarchyChanged(HierarchyEvent e) { |
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if (isShowing()) { |
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start(); |
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} else { |
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stop(); |
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} |
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} |
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} |
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); |
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} |
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public Color getBezierColor(BezierColor bezierColor) { |
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return colors.get(bezierColor); |
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} |
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public void setBezierColor(BezierColor bezierColor, Color value) { |
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if (value != null) { |
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colors.put(bezierColor, value); |
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} |
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} |
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public void start() { |
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Dimension size = getSize(); |
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for (int i = 0; i < animpts.length; i += 2) { |
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animpts[i] = (float) (Math.random() * size.width); |
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animpts[i + 1] = (float) (Math.random() * size.height); |
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deltas[i] = (float) (Math.random() * 4.0 + 2.0); |
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deltas[i + 1] = (float) (Math.random() * 4.0 + 2.0); |
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if (animpts[i] > size.width / 6.0f) { |
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deltas[i] = -deltas[i]; |
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} |
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if (animpts[i + 1] > size.height / 6.0f) { |
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deltas[i + 1] = -deltas[i + 1]; |
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} |
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} |
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anim = new Thread(this); |
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anim.setPriority(Thread.MIN_PRIORITY); |
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anim.start(); |
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} |
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public synchronized void stop() { |
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anim = null; |
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notify(); |
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} |
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private static void animate(float[] pts, float[] deltas, int index, int limit) { |
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float newpt = pts[index] + deltas[index]; |
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if (newpt <= 0) { |
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newpt = -newpt; |
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deltas[index] = (float) (Math.random() * 3.0 + 2.0); |
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} else if (newpt >= (float) limit) { |
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newpt = 2.0f * limit - newpt; |
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deltas[index] = -(float) (Math.random() * 3.0 + 2.0); |
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} |
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pts[index] = newpt; |
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} |
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public void run() { |
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Thread me = Thread.currentThread(); |
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while (getSize().width <= 0) { |
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try { |
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Thread.sleep(500); |
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} catch (InterruptedException e) { |
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return; |
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} |
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} |
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Graphics2D g2d = null; |
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Graphics2D bufferG2D = null; |
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BasicStroke solid = new BasicStroke(9.0f, BasicStroke.CAP_BUTT, BasicStroke.JOIN_ROUND, 9.0f); |
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GeneralPath gp = new GeneralPath(GeneralPath.WIND_NON_ZERO); |
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int rule = AlphaComposite.SRC_OVER; |
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AlphaComposite opaque = AlphaComposite.SrcOver; |
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AlphaComposite blend = AlphaComposite.getInstance(rule, 0.9f); |
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AlphaComposite set = AlphaComposite.Src; |
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Dimension oldSize = getSize(); |
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Shape clippath = null; |
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while (anim == me) { |
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Dimension size = getSize(); |
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if (size.width != oldSize.width || size.height != oldSize.height) { |
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img = null; |
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clippath = null; |
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if (bufferG2D != null) { |
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bufferG2D.dispose(); |
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bufferG2D = null; |
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} |
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} |
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oldSize = size; |
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if (img == null) { |
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img = (BufferedImage) createImage(size.width, size.height); |
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} |
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if (bufferG2D == null) { |
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bufferG2D = img.createGraphics(); |
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bufferG2D.setRenderingHint(RenderingHints.KEY_RENDERING, |
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RenderingHints.VALUE_RENDER_DEFAULT); |
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bufferG2D.setClip(clippath); |
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} |
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g2d = bufferG2D; |
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float[] ctrlpts; |
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for (int i = 0; i < animpts.length; i += 2) { |
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animate(animpts, deltas, i, size.width); |
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animate(animpts, deltas, i + 1, size.height); |
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} |
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ctrlpts = animpts; |
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int len = ctrlpts.length; |
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gp.reset(); |
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float prevx = ctrlpts[len - 2]; |
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float prevy = ctrlpts[len - 1]; |
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float curx = ctrlpts[0]; |
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float cury = ctrlpts[1]; |
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float midx = (curx + prevx) / 2.0f; |
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float midy = (cury + prevy) / 2.0f; |
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gp.moveTo(midx, midy); |
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for (int i = 2; i <= ctrlpts.length; i += 2) { |
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float x1 = (midx + curx) / 2.0f; |
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float y1 = (midy + cury) / 2.0f; |
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prevx = curx; |
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prevy = cury; |
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if (i < ctrlpts.length) { |
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curx = ctrlpts[i]; |
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cury = ctrlpts[i + 1]; |
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} else { |
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curx = ctrlpts[0]; |
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cury = ctrlpts[1]; |
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} |
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midx = (curx + prevx) / 2.0f; |
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midy = (cury + prevy) / 2.0f; |
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float x2 = (prevx + midx) / 2.0f; |
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float y2 = (prevy + midy) / 2.0f; |
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gp.curveTo(x1, y1, x2, y2, midx, midy); |
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} |
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gp.closePath(); |
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synchronized (lock) { |
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g2d.setComposite(set); |
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g2d.setBackground(getBezierColor(BACKGROUND)); |
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g2d.setRenderingHint(RenderingHints.KEY_ANTIALIASING, |
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RenderingHints.VALUE_ANTIALIAS_OFF); |
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// g2d.clearRect(bounds.x-5, bounds.y-5, bounds.x + bounds.width + 5, bounds.y + bounds.height + 5); |
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g2d.clearRect(0, 0, getWidth(), getHeight()); |
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g2d.setRenderingHint(RenderingHints.KEY_ANTIALIASING, |
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RenderingHints.VALUE_ANTIALIAS_ON); |
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g2d.setColor(getBezierColor(OUTER)); |
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g2d.setComposite(opaque); |
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g2d.setStroke(solid); |
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g2d.draw(gp); |
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g2d.setPaint(gradient); |
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Rectangle bounds = gp.getBounds(); |
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gradient = new GradientPaint(bounds.x, bounds.y, getBezierColor(GRADIENT_A), |
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bounds.x + bounds.width, bounds.y + bounds.height, |
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getBezierColor(GRADIENT_B), true); |
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g2d.setComposite(blend); |
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g2d.fill(gp); |
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} |
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repaint(); |
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Thread.yield(); |
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} |
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if (g2d != null) { |
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g2d.dispose(); |
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} |
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} |
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public void paint(Graphics g) { |
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synchronized (lock) { |
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Graphics2D g2d = (Graphics2D) g; |
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if (img != null) { |
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g2d.setComposite(AlphaComposite.Src); |
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g2d.drawImage(img, null, 0, 0); |
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} |
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} |
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} |
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}
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