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comparison snippets/opengl/Snippet195.d @ 78:4a04b6759f98

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Clean up directory names
author John Reimer <terminal.node@gmail.com>
date Sat, 10 May 2008 13:32:45 -0700
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children 1f0a7a472680
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76:04f122e90b0a 78:4a04b6759f98
1 /*******************************************************************************
2 * Copyright (c) 2000, 2005 IBM Corporation and others.
3 * All rights reserved. This program and the accompanying materials
4 * are made available under the terms of the Eclipse Public License v1.0
5 * which accompanies this distribution, and is available at
6 * http://www.eclipse.org/legal/epl-v10.html
7 *
8 * Contributors:
9 * IBM Corporation - initial API and implementation
10 * Port to the D Programming Language:
11 * John Reimer <terminal.node@gmail.com>
12 *******************************************************************************/
13
14 module snippets.opengl.Snippet195;
15
16 /*
17 * SWT OpenGL snippet: based on snippet195.java
18 *
19 * For a list of all SWT example snippets see
20 * http://www.eclipse.org/swt/snippets/
21 *
22 * @since 3.2
23 */
24
25 import dwt.DWT;
26 import dwt.dwthelper.Runnable;
27
28 import dwt.layout.FillLayout;
29 import dwt.widgets.Shell;
30 import dwt.widgets.Display;
31 import dwt.widgets.Event;
32 import dwt.widgets.Composite;
33 import dwt.widgets.Listener;
34 import dwt.graphics.Rectangle;
35 import dwt.opengl.GLCanvas;
36 import dwt.opengl.GLData;
37
38 import derelict.opengl.gl;
39 import derelict.opengl.glu;
40
41 import Math = tango.math.Math;
42
43 void drawTorus(float r, float R, int nsides, int rings)
44 {
45 float ringDelta = 2.0f * cast(float) Math.PI / rings;
46 float sideDelta = 2.0f * cast(float) Math.PI / nsides;
47 float theta = 0.0f, cosTheta = 1.0f, sinTheta = 0.0f;
48 for (int i = rings - 1; i >= 0; i--) {
49 float theta1 = theta + ringDelta;
50 float cosTheta1 = cast(float) Math.cos(theta1);
51 float sinTheta1 = cast(float) Math.sin(theta1);
52 glBegin(GL_QUAD_STRIP);
53 float phi = 0.0f;
54 for (int j = nsides; j >= 0; j--) {
55 phi += sideDelta;
56 float cosPhi = cast(float) Math.cos(phi);
57 float sinPhi = cast(float) Math.sin(phi);
58 float dist = R + r * cosPhi;
59 glNormal3f(cosTheta1 * cosPhi, -sinTheta1 * cosPhi, sinPhi);
60 glVertex3f(cosTheta1 * dist, -sinTheta1 * dist, r * sinPhi);
61 glNormal3f(cosTheta * cosPhi, -sinTheta * cosPhi, sinPhi);
62 glVertex3f(cosTheta * dist, -sinTheta * dist, r * sinPhi);
63 }
64 glEnd();
65 theta = theta1;
66 cosTheta = cosTheta1;
67 sinTheta = sinTheta1;
68 }
69 }
70
71 void main()
72 {
73 DerelictGL.load();
74 DerelictGLU.load();
75
76 Display display = new Display();
77 Shell shell = new Shell(display);
78 shell.setLayout(new FillLayout());
79 Composite comp = new Composite(shell, DWT.NONE);
80 comp.setLayout(new FillLayout());
81 GLData data = new GLData ();
82 data.doubleBuffer = true;
83 GLCanvas canvas = new GLCanvas(comp, DWT.NONE, data);
84
85 canvas.setCurrent();
86
87 canvas.addListener(DWT.Resize, new class() Listener {
88 public void handleEvent(Event event) {
89 Rectangle bounds = canvas.getBounds();
90 float fAspect = cast(float) bounds.width / cast(float) bounds.height;
91
92 glViewport(0, 0, bounds.width, bounds.height);
93 glMatrixMode(GL_PROJECTION);
94 glLoadIdentity();
95 gluPerspective(45.0f, fAspect, 0.5f, 400.0f);
96 glMatrixMode(GL_MODELVIEW);
97 glLoadIdentity();
98 }
99 });
100
101 glClearColor(1.0f, 1.0f, 1.0f, 1.0f);
102 glColor3f(1.0f, 0.0f, 0.0f);
103 glHint(GL_PERSPECTIVE_CORRECTION_HINT, GL_NICEST);
104 glClearDepth(1.0);
105 glLineWidth(2);
106 glEnable(GL_DEPTH_TEST);
107
108 shell.setText("DWT/DerelictGL Example");
109 shell.setSize(640, 480);
110 shell.open();
111
112 display.asyncExec(new class() Runnable {
113 int rot = 0;
114 public void run() {
115 if (!canvas.isDisposed()) {
116 canvas.setCurrent();
117
118 glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
119 glClearColor(.3f, .5f, .8f, 1.0f);
120 glLoadIdentity();
121 glTranslatef(0.0f, 0.0f, -10.0f);
122 float frot = rot;
123 glRotatef(0.15f * rot, 2.0f * frot, 10.0f * frot, 1.0f);
124 glRotatef(0.3f * rot, 3.0f * frot, 1.0f * frot, 1.0f);
125 rot++;
126 glPolygonMode(GL_FRONT_AND_BACK, GL_LINE);
127 glColor3f(0.9f, 0.9f, 0.9f);
128 drawTorus(1, 1.9f + (cast(float) Math.sin((0.004f * frot))), 15, 15);
129 canvas.swapBuffers();
130 display.asyncExec(this);
131 }
132 }
133 });
134
135 while (!shell.isDisposed()) {
136 if (!display.readAndDispatch())
137 display.sleep();
138 }
139 display.dispose();
140 }
141