--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/src/demo/share/jfc/J2Ddemo/java2d/demos/Lines/LineAnim.java Mon May 14 08:58:32 2018 -0700
@@ -0,0 +1,164 @@
+/*
+ *
+ * Copyright (c) 2007, 2011, Oracle and/or its affiliates. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * - Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ *
+ * - Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ *
+ * - Neither the name of Oracle nor the names of its
+ * contributors may be used to endorse or promote products derived
+ * from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
+ * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
+ * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+ * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+ * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+ * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+package java2d.demos.Lines;
+
+
+import static java.awt.Color.BLACK;
+import static java.awt.Color.GRAY;
+import static java.awt.Color.LIGHT_GRAY;
+import static java.awt.Color.PINK;
+import static java.awt.Color.WHITE;
+import java.awt.BasicStroke;
+import java.awt.Color;
+import java.awt.Graphics2D;
+import java.awt.geom.AffineTransform;
+import java.awt.geom.Ellipse2D;
+import java.awt.geom.GeneralPath;
+import java.awt.geom.Line2D;
+import java.awt.geom.PathIterator;
+import java.awt.geom.Point2D;
+import java2d.AnimatingSurface;
+
+
+/**
+ * Lines & Paths animation illustrating BasicStroke attributes.
+ */
+@SuppressWarnings("serial")
+public class LineAnim extends AnimatingSurface {
+
+ private static int caps[] = { BasicStroke.CAP_BUTT,
+ BasicStroke.CAP_SQUARE, BasicStroke.CAP_ROUND };
+ private static int joins[] = { BasicStroke.JOIN_MITER,
+ BasicStroke.JOIN_BEVEL, BasicStroke.JOIN_ROUND };
+ private static Color colors[] = { GRAY, PINK, LIGHT_GRAY };
+ private static BasicStroke bs1 = new BasicStroke(1.0f);
+ private static final int CLOCKWISE = 0;
+ private Line2D lines[] = new Line2D[3];
+ private int rAmt[] = new int[lines.length];
+ private int direction[] = new int[lines.length];
+ private int speed[] = new int[lines.length];
+ private BasicStroke strokes[] = new BasicStroke[lines.length];
+ private GeneralPath path;
+ private Point2D[] pts;
+ private float size;
+ private Ellipse2D ellipse = new Ellipse2D.Double();
+
+ public LineAnim() {
+ setBackground(WHITE);
+ }
+
+ @Override
+ public void reset(int w, int h) {
+ size = (w > h) ? h / 6f : w / 6f;
+ for (int i = 0; i < lines.length; i++) {
+ lines[i] = new Line2D.Float(0, 0, size, 0);
+ strokes[i] = new BasicStroke(size / 3, caps[i], joins[i]);
+ rAmt[i] = i * 360 / lines.length;
+ direction[i] = i % 2;
+ speed[i] = i + 1;
+ }
+
+ path = new GeneralPath();
+ path.moveTo(size, -size / 2);
+ path.lineTo(size + size / 2, 0);
+ path.lineTo(size, +size / 2);
+
+ ellipse.setFrame(w / 2 - size * 2 - 4.5f, h / 2 - size * 2 - 4.5f, size
+ * 4, size * 4);
+ PathIterator pi = ellipse.getPathIterator(null, 0.9);
+ Point2D[] points = new Point2D[100];
+ int num_pts = 0;
+ while (!pi.isDone()) {
+ float[] pt = new float[6];
+ switch (pi.currentSegment(pt)) {
+ case PathIterator.SEG_MOVETO:
+ case PathIterator.SEG_LINETO:
+ points[num_pts] = new Point2D.Float(pt[0], pt[1]);
+ num_pts++;
+ }
+ pi.next();
+ }
+ pts = new Point2D[num_pts];
+ System.arraycopy(points, 0, pts, 0, num_pts);
+ }
+
+ @Override
+ public void step(int w, int h) {
+ for (int i = 0; i < lines.length; i++) {
+ if (direction[i] == CLOCKWISE) {
+ rAmt[i] += speed[i];
+ if (rAmt[i] == 360) {
+ rAmt[i] = 0;
+ }
+ } else {
+ rAmt[i] -= speed[i];
+ if (rAmt[i] == 0) {
+ rAmt[i] = 360;
+ }
+ }
+ }
+ }
+
+ @Override
+ public void render(int w, int h, Graphics2D g2) {
+
+ ellipse.setFrame(w / 2 - size, h / 2 - size, size * 2, size * 2);
+ g2.setColor(BLACK);
+ g2.draw(ellipse);
+
+ for (int i = 0; i < lines.length; i++) {
+ AffineTransform at = AffineTransform.getTranslateInstance(w / 2, h
+ / 2);
+ at.rotate(Math.toRadians(rAmt[i]));
+ g2.setStroke(strokes[i]);
+ g2.setColor(colors[i]);
+ g2.draw(at.createTransformedShape(lines[i]));
+ g2.draw(at.createTransformedShape(path));
+
+ int j = (int) ((double) rAmt[i] / 360 * pts.length);
+ j = (j == pts.length) ? pts.length - 1 : j;
+ ellipse.setFrame(pts[j].getX(), pts[j].getY(), 9, 9);
+ g2.fill(ellipse);
+ }
+
+ g2.setStroke(bs1);
+ g2.setColor(BLACK);
+ for (int i = 0; i < pts.length; i++) {
+ ellipse.setFrame(pts[i].getX(), pts[i].getY(), 9, 9);
+ g2.draw(ellipse);
+ }
+ }
+
+ public static void main(String argv[]) {
+ createDemoFrame(new LineAnim());
+ }
+}