Attachment 60304 Details for Bug 176150 – test program with JOGL

test program with JOGL

SWT_JOGL.java (text/plain), 5.56 KB, created by supertat

on 2007-03-06 00:53:24 EST

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Creator: supertat

Created: 2007-03-06 00:53:24 EST

Size: 5.56 KB

patch

obsolete

>package org.eclipse.swt.snippets;
>
>/*
> * SWT OpenGL snippet: use JOGL to draw to an SWT GLCanvas
> *
> * For a list of all SWT example snippets see
> * http://www.eclipse.org/swt/snippets/
> * 
> * @since 3.2
> */
>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 javax.media.opengl.GL;
>import javax.media.opengl.GLContext;
>import javax.media.opengl.GLDrawableFactory;
>import javax.media.opengl.glu.GLU;
>
>public class Snippet209 {
>    
>    static long startTime = System.currentTimeMillis() + 5000;
>    static long fps = 0;
>    
>    static void drawTorus(GL gl, 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);
>            gl.glBegin(GL.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;
>                gl.glNormal3f(cosTheta1 * cosPhi, -sinTheta1 * cosPhi, sinPhi);
>                gl.glVertex3f(cosTheta1 * dist, -sinTheta1 * dist, r * sinPhi);
>                gl.glNormal3f(cosTheta * cosPhi, -sinTheta * cosPhi, sinPhi);
>                gl.glVertex3f(cosTheta * dist, -sinTheta * dist, r * sinPhi);
>            }
>            gl.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();
>        final GLContext context = GLDrawableFactory.getFactory().createExternalGLContext();
>
>        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();
>                context.makeCurrent();
>                GL gl = context.getGL ();
>                gl.glViewport(0, 0, bounds.width, bounds.height);
>                gl.glMatrixMode(GL.GL_PROJECTION);
>                gl.glLoadIdentity();
>                GLU glu = new GLU();
>                glu.gluPerspective(45.0f, fAspect, 0.5f, 400.0f);
>                gl.glMatrixMode(GL.GL_MODELVIEW);
>                gl.glLoadIdentity();
>                context.release();
>            }
>        });
>
>        context.makeCurrent();
>        GL gl = context.getGL ();
>        gl.glClearColor(1.0f, 1.0f, 1.0f, 1.0f);
>        gl.glColor3f(1.0f, 0.0f, 0.0f);
>        gl.glHint(GL.GL_PERSPECTIVE_CORRECTION_HINT, GL.GL_NICEST);
>        gl.glClearDepth(1.0);
>        gl.glLineWidth(2);
>        gl.glEnable(GL.GL_DEPTH_TEST);
>        context.release();
>
>        shell.setText("SWT/JOGL Example");
>        shell.setSize(640, 480);
>        shell.open();
>
>        display.asyncExec(new Runnable() {
>            int rot = 0;
>            public void run() {
>                if (!canvas.isDisposed()) {
>                    canvas.setCurrent();
>                    context.makeCurrent();
>                    GL gl = context.getGL ();
>                    gl.glClear(GL.GL_COLOR_BUFFER_BIT | GL.GL_DEPTH_BUFFER_BIT);
>                    gl.glClearColor(.3f, .5f, .8f, 1.0f);
>                    gl.glLoadIdentity();
>                    gl.glTranslatef(0.0f, 0.0f, -10.0f);
>                    float frot = rot;
>                    gl.glRotatef(0.15f * rot, 2.0f * frot, 10.0f * frot, 1.0f);
>                    gl.glRotatef(0.3f * rot, 3.0f * frot, 1.0f * frot, 1.0f);
>                    rot++;
>                    gl.glPolygonMode(GL.GL_FRONT_AND_BACK, GL.GL_LINE);
>                    gl.glColor3f(0.9f, 0.9f, 0.9f);
>                    drawTorus(gl, 1, 1.9f + ((float) Math.sin((0.004f * frot))), 15, 15);
>                    canvas.swapBuffers();
>                    context.release();
>                    if (startTime > System.currentTimeMillis()) {
>                        fps++;
>                    } else {
>                        long timeUsed = 5000 + (startTime - System
>                                .currentTimeMillis());
>                        startTime = System.currentTimeMillis() + 5000;
>                        System.out.println(fps + " frames in "
>                                + (float) (timeUsed / 1000f) + " seconds = "
>                                + (fps / (timeUsed / 1000f)));
>                        fps = 0;
>                    }
>                    
>                    display.asyncExec(this);
>                }
>            }
>        });
>
>        while (!shell.isDisposed()) {
>            if (!display.readAndDispatch())
>                display.sleep();
>        }
>        display.dispose();
>    }
>}

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