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authorGrant Gayed2005-01-21 20:48:07 +0000
committerGrant Gayed2005-01-21 20:48:07 +0000
commitd8230290d827be99fc8d291f7e31463dc3b1896b (patch)
treed39882d48a95cc97aa4ccf1b941d0c8692e74e18 /examples
parentc2991ac7e541917df93e4a1e8efd44486400a2d0 (diff)
downloadeclipse.platform.swt-d8230290d827be99fc8d291f7e31463dc3b1896b.tar.gz
eclipse.platform.swt-d8230290d827be99fc8d291f7e31463dc3b1896b.tar.xz
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Diffstat (limited to 'examples')
-rw-r--r--examples/org.eclipse.swt.snippets/src/org/eclipse/swt/snippets/Snippet174.java101
1 files changed, 101 insertions, 0 deletions
diff --git a/examples/org.eclipse.swt.snippets/src/org/eclipse/swt/snippets/Snippet174.java b/examples/org.eclipse.swt.snippets/src/org/eclipse/swt/snippets/Snippet174.java
new file mode 100644
index 0000000000..bd38e26088
--- /dev/null
+++ b/examples/org.eclipse.swt.snippets/src/org/eclipse/swt/snippets/Snippet174.java
@@ -0,0 +1,101 @@
+/*******************************************************************************
+ * Copyright (c) 2000, 2004 IBM Corporation and others.
+ * All rights reserved. This program and the accompanying materials
+ * are made available under the terms of the Common Public License v1.0
+ * which accompanies this distribution, and is available at
+ * http://www.eclipse.org/legal/cpl-v10.html
+ *
+ * Contributors:
+ * IBM Corporation - initial API and implementation
+ * Sebastian Davids
+ *******************************************************************************/
+package org.eclipse.swt.snippets;
+
+/*
+ * SWT OpenGL snippet: draw a square
+ *
+ * This snippet requires the experimental org.eclipse.swt.opengl plugin, which
+ * is not included in swt by default. For information on this plugin see
+ * http://dev.eclipse.org/viewcvs/index.cgi/%7Echeckout%7E/platform-swt-home/opengl/opengl.html
+ *
+ * For a list of all SWT example snippets see
+ * http://dev.eclipse.org/viewcvs/index.cgi/%7Echeckout%7E/platform-swt-home/dev.html#snippets
+ */
+import org.eclipse.swt.SWT;
+import org.eclipse.swt.events.*;
+import org.eclipse.swt.graphics.*;
+import org.eclipse.swt.layout.*;
+import org.eclipse.swt.opengl.*;
+import org.eclipse.swt.widgets.*;
+
+public class Snippet174 {
+
+public static void main(String[] args) {
+ Display display = new Display();
+ Shell shell = new Shell(display);
+ shell.setText("OpenGL SWT");
+ shell.setLayout(new FillLayout());
+ final Canvas canvas = new Canvas(shell, SWT.NONE);
+ canvas.addControlListener(new ControlAdapter() {
+ public void controlResized(ControlEvent e) {
+ resize(canvas);
+ }
+ });
+ final GLContext context = init(canvas);
+ shell.addDisposeListener(new DisposeListener() {
+ public void widgetDisposed(DisposeEvent e) {
+ context.dispose();
+ }
+ });
+ new Runnable() {
+ public void run() {
+ if (canvas.isDisposed()/* || canvas.getShell() == null*/) return;
+ render();
+ context.swapBuffers();
+ canvas.getDisplay().timerExec(100, this);
+ }
+ }.run();
+ shell.open();
+ while (!shell.isDisposed()) {
+ if (!display.readAndDispatch()) display.sleep();
+ }
+ display.dispose();
+}
+
+static GLContext init(Canvas canvas) {
+ GLContext context = new GLContext(canvas);
+ context.setCurrent();
+ resize(canvas);
+ GL.glClearColor(1.0f, 1.0f, 1.0f, 1.0f);
+ GL.glColor3f(0.0f, 0.0f, 0.0f);
+ GL.glClearDepth(1.0f);
+ GL.glEnable(GL.GL_DEPTH_TEST);
+ GL.glHint(GL.GL_PERSPECTIVE_CORRECTION_HINT, GL.GL_NICEST);
+ return context;
+}
+
+static void render() {
+ GL.glClear(GL.GL_COLOR_BUFFER_BIT | GL.GL_DEPTH_BUFFER_BIT);
+ GL.glLoadIdentity();
+ GL.glTranslatef(0.0f, 0.0f, -6.0f);
+ GL.glBegin(GL.GL_QUADS);
+ GL.glVertex3f(-1.0f, 1.0f, 0.0f);
+ GL.glVertex3f(1.0f, 1.0f, 0.0f);
+ GL.glVertex3f(1.0f, -1.0f, 0.0f);
+ GL.glVertex3f(-1.0f, -1.0f, 0.0f);
+ GL.glEnd();
+}
+
+static void resize(Canvas canvas) {
+ Rectangle rect = canvas.getClientArea();
+ int width = rect.width;
+ int height = Math.max(rect.height, 1);
+ GL.glViewport(0, 0, width, height);
+ GL.glMatrixMode(GL.GL_PROJECTION);
+ GL.glLoadIdentity();
+ float aspect = (float) width / (float) height;
+ GLU.gluPerspective(45.0f, aspect, 0.5f, 400.0f);
+ GL.glMatrixMode(GL.GL_MODELVIEW);
+ GL.glLoadIdentity();
+}
+}

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