--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/snippets/opengl/Snippet195.d	Sat May 10 13:32:45 2008 -0700
@@ -0,0 +1,141 @@
+/*******************************************************************************
+ * 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
+ * Port to the D Programming Language:
+ *     John Reimer <terminal.node@gmail.com>
+ *******************************************************************************/
+
+module snippets.opengl.Snippet195;
+
+/*
+ * SWT OpenGL snippet: based on snippet195.java
+ *
+ * For a list of all SWT example snippets see
+ * http://www.eclipse.org/swt/snippets/
+ *
+ * @since 3.2
+ */
+
+import dwt.DWT;
+import dwt.dwthelper.Runnable;
+
+import dwt.layout.FillLayout;
+import dwt.widgets.Shell;
+import dwt.widgets.Display;
+import dwt.widgets.Event;
+import dwt.widgets.Composite;
+import dwt.widgets.Listener;
+import dwt.graphics.Rectangle;
+import dwt.opengl.GLCanvas;
+import dwt.opengl.GLData;
+
+import derelict.opengl.gl;
+import derelict.opengl.glu;
+
+import Math = tango.math.Math;
+
+void drawTorus(float r, float R, int nsides, int rings)
+{
+    float ringDelta = 2.0f * cast(float) Math.PI / rings;
+    float sideDelta = 2.0f * cast(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 = cast(float) Math.cos(theta1);
+        float sinTheta1 = cast(float) Math.sin(theta1);
+        glBegin(GL_QUAD_STRIP);
+        float phi = 0.0f;
+        for (int j = nsides; j >= 0; j--) {
+            phi += sideDelta;
+            float cosPhi = cast(float) Math.cos(phi);
+            float sinPhi = cast(float) Math.sin(phi);
+            float dist = R + r * cosPhi;
+            glNormal3f(cosTheta1 * cosPhi, -sinTheta1 * cosPhi, sinPhi);
+            glVertex3f(cosTheta1 * dist, -sinTheta1 * dist, r * sinPhi);
+            glNormal3f(cosTheta * cosPhi, -sinTheta * cosPhi, sinPhi);
+            glVertex3f(cosTheta * dist, -sinTheta * dist, r * sinPhi);
+        }
+        glEnd();
+        theta = theta1;
+        cosTheta = cosTheta1;
+        sinTheta = sinTheta1;
+    }
+}
+
+void main()
+{
+    DerelictGL.load();
+    DerelictGLU.load();
+
+    Display display = new Display();
+    Shell shell = new Shell(display);
+    shell.setLayout(new FillLayout());
+    Composite comp = new Composite(shell, DWT.NONE);
+    comp.setLayout(new FillLayout());
+    GLData data = new GLData ();
+    data.doubleBuffer = true;
+    GLCanvas canvas = new GLCanvas(comp, DWT.NONE, data);
+
+    canvas.setCurrent();
+
+    canvas.addListener(DWT.Resize, new class() Listener {
+        public void handleEvent(Event event) {
+            Rectangle bounds = canvas.getBounds();
+            float fAspect = cast(float) bounds.width / cast(float) bounds.height;
+
+            glViewport(0, 0, bounds.width, bounds.height);
+            glMatrixMode(GL_PROJECTION);
+            glLoadIdentity();
+            gluPerspective(45.0f, fAspect, 0.5f, 400.0f);
+            glMatrixMode(GL_MODELVIEW);
+            glLoadIdentity();
+        }
+    });
+
+    glClearColor(1.0f, 1.0f, 1.0f, 1.0f);
+    glColor3f(1.0f, 0.0f, 0.0f);
+    glHint(GL_PERSPECTIVE_CORRECTION_HINT, GL_NICEST);
+    glClearDepth(1.0);
+    glLineWidth(2);
+    glEnable(GL_DEPTH_TEST);
+
+    shell.setText("DWT/DerelictGL Example");
+    shell.setSize(640, 480);
+    shell.open();
+
+    display.asyncExec(new class() Runnable {
+        int rot = 0;
+        public void run() {
+            if (!canvas.isDisposed()) {
+                canvas.setCurrent();
+
+                glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
+                glClearColor(.3f, .5f, .8f, 1.0f);
+                glLoadIdentity();
+                glTranslatef(0.0f, 0.0f, -10.0f);
+                float frot = rot;
+                glRotatef(0.15f * rot, 2.0f * frot, 10.0f * frot, 1.0f);
+                glRotatef(0.3f * rot, 3.0f * frot, 1.0f * frot, 1.0f);
+                rot++;
+                glPolygonMode(GL_FRONT_AND_BACK, GL_LINE);
+                glColor3f(0.9f, 0.9f, 0.9f);
+                drawTorus(1, 1.9f + (cast(float) Math.sin((0.004f * frot))), 15, 15);
+                canvas.swapBuffers();
+                display.asyncExec(this);
+            }
+        }
+    });
+
+    while (!shell.isDisposed()) {
+        if (!display.readAndDispatch())
+            display.sleep();
+    }
+    display.dispose();
+}
+