Advertisement
Not a member of Pastebin yet?
Sign Up,
it unlocks many cool features!
- /*******************************************************************************
- * 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 org.eclipse.swt.snippets.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 org.eclipse.swt.SWT;
- import org.eclipse.swt.layout.FillLayout;
- import org.eclipse.swt.widgets.Shell;
- import org.eclipse.swt.widgets.Display;
- import org.eclipse.swt.widgets.Event;
- import org.eclipse.swt.widgets.Composite;
- import org.eclipse.swt.widgets.Listener;
- import org.eclipse.swt.graphics.Rectangle;
- import org.eclipse.swt.opengl.GLCanvas;
- import org.eclipse.swt.opengl.GLData;
- import java.lang.all;
- import derelict.opengl3.gl;
- import derelict.glfw3.glfw3;
- import Math = std.math;
- void perspectiveGL( GLdouble fovY, GLdouble aspect, GLdouble zNear, GLdouble zFar )
- {
- const GLdouble pi = 3.1415926535897932384626433832795;
- GLdouble fW, fH;
- fH = Math.tan( fovY / 360 * pi ) * zNear;
- fW = fH * aspect;
- glFrustum( -fW, fW, -fH, fH, zNear, zFar );
- }
- 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();
- 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;
- GLCanvas canvas = new GLCanvas(comp, SWT.NONE, data);
- canvas.setCurrent();
- canvas.addListener(SWT.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();
- perspectiveGL(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("SWT/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();
- }
Advertisement
Add Comment
Please, Sign In to add comment
Advertisement