Attachment 687 Details for Bug 822 – Test case that reproduces the bug

Test case that reproduces the bug

NewtTest.java (text/plain), 5.27 KB, created by mdehoog on 2015-01-29 22:29:46 CET

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Creator: mdehoog

Created: 2015-01-29 22:29:46 CET

Size: 5.27 KB

patch

obsolete

>import javax.media.opengl.GL2;
>import javax.media.opengl.GLAutoDrawable;
>import javax.media.opengl.GLCapabilities;
>import javax.media.opengl.GLEventListener;
>import javax.media.opengl.GLProfile;
>import javax.media.opengl.glu.GLU;
>
>import org.eclipse.swt.SWT;
>import org.eclipse.swt.events.SelectionAdapter;
>import org.eclipse.swt.events.SelectionEvent;
>import org.eclipse.swt.layout.RowLayout;
>import org.eclipse.swt.widgets.Button;
>import org.eclipse.swt.widgets.Composite;
>import org.eclipse.swt.widgets.Display;
>import org.eclipse.swt.widgets.Shell;
>
>import com.jogamp.newt.opengl.GLWindow;
>import com.jogamp.newt.swt.NewtCanvasSWT;
>import com.jogamp.opengl.util.Animator;
>
>public class NewtTest
>{
>	public static void main(String[] args)
>	{
>		Display display = new Display();
>		Shell shell = new Shell(display);
>		shell.setLayout(new RowLayout());
>
>		final NewtCanvasSWT canvas1 = init(shell, false);
>		final NewtCanvasSWT canvas2 = init(shell, true);
>
>		Button button1 = new Button(shell, SWT.PUSH);
>		button1.setText("Set size to 0,0");
>		button1.addSelectionListener(new SelectionAdapter()
>		{
>			@Override
>			public void widgetSelected(SelectionEvent e)
>			{
>				canvas1.setSize(0, 0);
>				canvas2.setSize(0, 0);
>			}
>		});
>
>		Button button2 = new Button(shell, SWT.PUSH);
>		button2.setText("Set size to 50,50");
>		button2.addSelectionListener(new SelectionAdapter()
>		{
>			@Override
>			public void widgetSelected(SelectionEvent e)
>			{
>				canvas1.setSize(50, 50);
>				canvas2.setSize(50, 50);
>			}
>		});
>
>		shell.pack();
>		shell.open();
>		while (!shell.isDisposed())
>		{
>			if (!display.readAndDispatch())
>			{
>				display.sleep();
>			}
>		}
>		display.dispose();
>	}
>
>	public static NewtCanvasSWT init(Composite parent, final boolean applyFix)
>	{
>		GLCapabilities caps = new GLCapabilities(GLProfile.get(GLProfile.GL2));
>		final GLWindow glWindow = GLWindow.create(caps);
>		NewtCanvasSWT canvas = new NewtCanvasSWT(parent, SWT.NONE, glWindow)
>		{
>			@Override
>			public void setSize(int width, int height)
>			{
>				//do not allow a size of 0,0, because NEWT window becomes invisible (https://jogamp.org/bugzilla/show_bug.cgi?id=822)
>				if (applyFix)
>				{
>					super.setSize(Math.max(1, width), Math.max(1, height));
>				}
>				else
>				{
>					super.setSize(width, height);
>				}
>			}
>		};
>
>		glWindow.addGLEventListener(new MyGlEventListener());
>
>		Animator animator = new Animator(glWindow);
>		animator.setUpdateFPSFrames(1, null);
>		animator.start();
>
>		return canvas;
>	}
>
>	/**
>	 * GLEventListener which draws a spinning torus. From
>	 * https://github.com/sgothel
>	 * /jogl-demos/blob/master/src/demos/swt/Snippet209.java.
>	 */
>	private static class MyGlEventListener implements GLEventListener
>	{
>		private int rot = 0;
>
>		@Override
>		public void init(GLAutoDrawable drawable)
>		{
>			GL2 gl = drawable.getGL().getGL2();
>			gl.setSwapInterval(1);
>			gl.glClearColor(1.0f, 1.0f, 1.0f, 1.0f);
>			gl.glColor3f(1.0f, 0.0f, 0.0f);
>			gl.glHint(GL2.GL_PERSPECTIVE_CORRECTION_HINT, GL2.GL_NICEST);
>			gl.glClearDepth(1.0);
>			gl.glLineWidth(2);
>			gl.glEnable(GL2.GL_DEPTH_TEST);
>		}
>
>		@Override
>		public void reshape(GLAutoDrawable drawable, int x, int y, int width, int height)
>		{
>			float fAspect = (float) width / (float) height;
>			GL2 gl = drawable.getGL().getGL2();
>			gl.glViewport(0, 0, width, height);
>			gl.glMatrixMode(GL2.GL_PROJECTION);
>			gl.glLoadIdentity();
>			GLU glu = new GLU();
>			glu.gluPerspective(45.0f, fAspect, 0.5f, 400.0f);
>			gl.glMatrixMode(GL2.GL_MODELVIEW);
>			gl.glLoadIdentity();
>		}
>
>		@Override
>		public void display(GLAutoDrawable drawable)
>		{
>			GL2 gl = drawable.getGL().getGL2();
>			gl.glClear(GL2.GL_COLOR_BUFFER_BIT | GL2.GL_DEPTH_BUFFER_BIT);
>			gl.glClearColor(.3f, .5f, .8f, 1.0f);
>			gl.glLoadIdentity();
>			gl.glTranslatef(0.0f, 0.0f, -10.0f);
>			gl.glRotatef(0.15f * rot, 2.0f * rot, 10.0f * rot, 1.0f);
>			gl.glRotatef(0.3f * rot, 3.0f * rot, 1.0f * rot, 1.0f);
>			rot++;
>			gl.glPolygonMode(GL2.GL_FRONT_AND_BACK, GL2.GL_LINE);
>			gl.glColor3f(0.9f, 0.9f, 0.9f);
>			drawTorus(gl, 1, 1.9f + ((float) Math.sin((0.004f * rot))), 15, 15);
>		}
>
>		@Override
>		public void dispose(GLAutoDrawable drawable)
>		{
>		}
>
>		protected void drawTorus(GL2 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(GL2.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;
>			}
>		}
>	}
>}

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Attachments on bug 822: 687