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author | Billy Biggs | 2005-09-22 15:32:00 +0000 |
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committer | Billy Biggs | 2005-09-22 15:32:00 +0000 |
commit | aca4e77df0d7b144f3674d8789991358f3b6c432 (patch) | |
tree | 2e31e0cc9d365da704930473d1b077031426c3d4 /examples/org.eclipse.swt.opengl.examples/src | |
parent | dd84a8680b3d1b68ce91e90ba159a082e49c9e49 (diff) | |
download | eclipse.platform.swt-aca4e77df0d7b144f3674d8789991358f3b6c432.tar.gz eclipse.platform.swt-aca4e77df0d7b144f3674d8789991358f3b6c432.tar.xz eclipse.platform.swt-aca4e77df0d7b144f3674d8789991358f3b6c432.zip |
Add an LWJGL example.
Diffstat (limited to 'examples/org.eclipse.swt.opengl.examples/src')
-rw-r--r-- | examples/org.eclipse.swt.opengl.examples/src/org/eclipse/swt/opengl/examples/LWJGLExample.java | 130 |
1 files changed, 130 insertions, 0 deletions
diff --git a/examples/org.eclipse.swt.opengl.examples/src/org/eclipse/swt/opengl/examples/LWJGLExample.java b/examples/org.eclipse.swt.opengl.examples/src/org/eclipse/swt/opengl/examples/LWJGLExample.java new file mode 100644 index 0000000000..11d1c2073b --- /dev/null +++ b/examples/org.eclipse.swt.opengl.examples/src/org/eclipse/swt/opengl/examples/LWJGLExample.java @@ -0,0 +1,130 @@ +/******************************************************************************* + * Copyright (c) 2000, 2005 IBM Corporation and others. + * All rights reserved. This program and the accompanying materials + * are made available under the terms of the Eclipse Public License v1.0 + * which accompanies this distribution, and is available at + * http://www.eclipse.org/legal/epl-v10.html + * + * Contributors: + * IBM Corporation - initial API and implementation + *******************************************************************************/ +package org.eclipse.swt.opengl.examples; + +import org.eclipse.swt.*; +import org.eclipse.swt.layout.*; +import org.eclipse.swt.widgets.*; +import org.eclipse.swt.graphics.*; +import org.eclipse.swt.opengl.GLCanvas; +import org.eclipse.swt.opengl.GLData; +import org.lwjgl.opengl.GL11; +import org.lwjgl.opengl.GLContext; +import org.lwjgl.opengl.glu.GLU; +import org.lwjgl.LWJGLException; + +/* + * SWT OpenGL snippet: use LWJGL to draw to an SWT GLCanvas + */ +public class LWJGLExample { + static void drawTorus(float r, float R, int nsides, int rings) { + float ringDelta = 2.0f * (float) Math.PI / rings; + float sideDelta = 2.0f * (float) Math.PI / nsides; + float theta = 0.0f, cosTheta = 1.0f, sinTheta = 0.0f; + for (int i = rings - 1; i >= 0; i--) { + float theta1 = theta + ringDelta; + float cosTheta1 = (float) Math.cos(theta1); + float sinTheta1 = (float) Math.sin(theta1); + GL11.glBegin(GL11.GL_QUAD_STRIP); + float phi = 0.0f; + for (int j = nsides; j >= 0; j--) { + phi += sideDelta; + float cosPhi = (float) Math.cos(phi); + float sinPhi = (float) Math.sin(phi); + float dist = R + r * cosPhi; + GL11.glNormal3f(cosTheta1 * cosPhi, -sinTheta1 * cosPhi, sinPhi); + GL11.glVertex3f(cosTheta1 * dist, -sinTheta1 * dist, r * sinPhi); + GL11.glNormal3f(cosTheta * cosPhi, -sinTheta * cosPhi, sinPhi); + GL11.glVertex3f(cosTheta * dist, -sinTheta * dist, r * sinPhi); + } + GL11.glEnd(); + theta = theta1; + cosTheta = cosTheta1; + sinTheta = sinTheta1; + } + } + + public static void main(String [] args) { + final Display display = new Display(); + Shell shell = new Shell(display); + shell.setLayout(new FillLayout()); + Composite comp = new Composite(shell, SWT.NONE); + comp.setLayout(new FillLayout()); + GLData data = new GLData (); + data.doubleBuffer = true; + final GLCanvas canvas = new GLCanvas(comp, SWT.NONE, data); + + canvas.setCurrent(); + try { + GLContext.useContext(canvas); + } catch(LWJGLException e) { e.printStackTrace(); } + + canvas.addListener(SWT.Resize, new Listener() { + public void handleEvent(Event event) { + Rectangle bounds = canvas.getBounds(); + float fAspect = (float) bounds.width / (float) bounds.height; + canvas.setCurrent(); + try { + GLContext.useContext(canvas); + } catch(LWJGLException e) { e.printStackTrace(); } + GL11.glViewport(0, 0, bounds.width, bounds.height); + GL11.glMatrixMode(GL11.GL_PROJECTION); + GL11.glLoadIdentity(); + GLU.gluPerspective(45.0f, fAspect, 0.5f, 400.0f); + GL11.glMatrixMode(GL11.GL_MODELVIEW); + GL11.glLoadIdentity(); + } + }); + + GL11.glClearColor(1.0f, 1.0f, 1.0f, 1.0f); + GL11.glColor3f(1.0f, 0.0f, 0.0f); + GL11.glHint(GL11.GL_PERSPECTIVE_CORRECTION_HINT, GL11.GL_NICEST); + GL11.glClearDepth(1.0); + GL11.glLineWidth(2); + GL11.glEnable(GL11.GL_DEPTH_TEST); + + shell.setText("SWT/LWJGL Example"); + shell.setSize(640, 480); + shell.open(); + + display.asyncExec(new Runnable() { + int rot = 0; + public void run() { + if (!canvas.isDisposed()) { + canvas.setCurrent(); + try { + GLContext.useContext(canvas); + } catch(LWJGLException e) { e.printStackTrace(); } + GL11.glClear(GL11.GL_COLOR_BUFFER_BIT | GL11.GL_DEPTH_BUFFER_BIT); + GL11.glClearColor(.3f, .5f, .8f, 1.0f); + GL11.glLoadIdentity(); + GL11.glTranslatef(0.0f, 0.0f, -10.0f); + float frot = rot; + GL11.glRotatef(0.15f * rot, 2.0f * frot, 10.0f * frot, 1.0f); + GL11.glRotatef(0.3f * rot, 3.0f * frot, 1.0f * frot, 1.0f); + rot++; + GL11.glPolygonMode(GL11.GL_FRONT_AND_BACK, GL11.GL_LINE); + GL11.glColor3f(0.9f, 0.9f, 0.9f); + drawTorus(1, 1.9f + ((float) Math.sin((0.004f * frot))), 15, 15); + canvas.swapBuffers(); + display.asyncExec(this); + } + } + }); + + while(!shell.isDisposed()) { + if (!display.readAndDispatch()) { + display.sleep(); + } + } + display.dispose(); + } +} |