examples/org.eclipse.swt.opengl.examples/src/org/eclipse/swt/opengl/examples/LightTab.java - platform/eclipse.platform.swt - Git at Google

 /*******************************************************************************
  * Copyright (c) 2000, 2003 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
  *******************************************************************************/
 package org.eclipse.swt.opengl.examples;


 import org.eclipse.opengl.*;
 import org.eclipse.swt.*;
 import org.eclipse.swt.graphics.*;
 import org.eclipse.swt.layout.*;
 import org.eclipse.swt.widgets.*;

 class LightTab extends OpenGLTab {
 	private float[] materialShininess = { 25.0f };
 	private float[] lightPosition = { 0.0f, 0.0f, 0.0f, 1.0f };
 	private float[][] colorValues = {
 		{ 1.0f, 1.0f, 1.0f, 1.0f },	// light diffuse
 		{ 1.0f, 1.0f, 1.0f, 1.0f },	// light ambient
 		{ 1.0f, 1.0f, 1.0f, 1.0f },	// light specular
 		{ 0.5f, 0.5f, 0.5f, 1.0f },	// light main ambient
 		{ 0.0f, 0.0f, 1.0f, 1.0f },	// material diffuse
 		{ 0.3f, 0.3f, 0.3f, 1.0f },	// material ambient
 		{ 1.0f, 1.0f, 1.0f, 1.0f }	// material specular
 	};
 	private float yPos = 0.0f, xPos = 0.0f, zPos = -20.0f;
 	private int quadratic, sphere;

 	/**
 	 * @see OpenGLTab#createControls(Composite)
 	 */
 	void createControls(Composite composite) {
 		Group movementGroup = new Group(composite, SWT.NONE);
 		movementGroup.setText("Translation");
 		movementGroup.setLayout(new GridLayout(2, false));

 		new Label(movementGroup, SWT.NONE).setText("X:");
 		final Slider xMove = new Slider(movementGroup, SWT.NONE);
 		xMove.setIncrement(1);
 		xMove.setMaximum(22);
 		xMove.setMinimum(0);
 		xMove.setThumb(2);
 		xMove.setPageIncrement(2);
 		xMove.setSelection(10);
 		xMove.addListener(SWT.Selection, new Listener() {
 			public void handleEvent(Event e) {
 				xPos = xMove.getSelection() - 10;
 			}
 		});

 		new Label(movementGroup, SWT.NONE).setText("Y:");
 		final Slider yMove = new Slider(movementGroup, SWT.NONE);
 		yMove.setIncrement(1);
 		yMove.setMaximum(22);
 		yMove.setMinimum(0);
 		yMove.setThumb(2);
 		yMove.setPageIncrement(2);
 		yMove.setSelection(10);
 		yMove.addListener(SWT.Selection, new Listener() {
 			public void handleEvent(Event e) {
 				yPos = yMove.getSelection() - 10;
 			}
 		});

 		new Label(movementGroup, SWT.NONE).setText("Z:");
 		final Slider zMove = new Slider(movementGroup, SWT.NONE);
 		zMove.setIncrement(1);
 		zMove.setMaximum(22);
 		zMove.setMinimum(0);
 		zMove.setThumb(2);
 		zMove.setPageIncrement(2);
 		zMove.setSelection(10);
 		zMove.addListener(SWT.Selection, new Listener() {
 			public void handleEvent(Event e) {
 				zPos = zMove.getSelection() - 30;
 			}
 		});

 		Group positionGroup = new Group(composite, SWT.NONE);
 		positionGroup.setText("Light Position");
 		positionGroup.setLayout(new GridLayout(2, false));

 		new Label(positionGroup, SWT.NONE).setText("X:");
 		final Slider lightX = new Slider(positionGroup, SWT.NONE);
 		lightX.setIncrement(1);
 		lightX.setMaximum(22);
 		lightX.setMinimum(0);
 		lightX.setThumb(2);
 		lightX.setPageIncrement(2);
 		lightX.setSelection(10);
 		lightX.addListener(SWT.Selection, new Listener() {
 			public void handleEvent(Event e) {
 				lightPosition[0] = ((float) lightX.getSelection() * 10) - 100;
 			}
 		});

 		new Label(positionGroup, SWT.NONE).setText("Y:");
 		final Slider lightY = new Slider(positionGroup, SWT.NONE);
 		lightY.setIncrement(1);
 		lightY.setMaximum(22);
 		lightY.setMinimum(0);
 		lightY.setThumb(2);
 		lightY.setPageIncrement(2);
 		lightY.setSelection(10);
 		lightY.addListener(SWT.Selection, new Listener() {
 			public void handleEvent(Event e) {
 				lightPosition[1] = ((float) lightY.getSelection() * 10) - 100;
 			}
 		});

 		new Label(positionGroup, SWT.NONE).setText("Z:");
 		final Slider lightZ = new Slider(positionGroup, SWT.NONE);
 		lightZ.setIncrement(1);
 		lightZ.setMaximum(22);
 		lightZ.setMinimum(0);
 		lightZ.setThumb(2);
 		lightZ.setPageIncrement(2);
 		lightZ.setSelection(10);
 		lightZ.addListener(SWT.Selection, new Listener() {
 			public void handleEvent(Event e) {
 				lightPosition[2] = ((float) lightZ.getSelection() * 10) - 20;
 			}
 		});

 		Group lightColorsGroup = new Group(composite, SWT.NONE);
 		lightColorsGroup.setText("Light Colors");
 		lightColorsGroup.setLayout(new GridLayout());
 		GridData data = new GridData(GridData.FILL_BOTH);
 		lightColorsGroup.setLayoutData(data);

 		ColorSelectionGroup lightDiffuseButton =
 			new ColorSelectionGroup(lightColorsGroup, SWT.NONE);
 		lightDiffuseButton.setText("Diffuse");
 		lightDiffuseButton.setRGB(
 			new RGB(
 				(int) (colorValues[0][0] * 255),
 				(int) (colorValues[0][1] * 255),
 				(int) (colorValues[0][2] * 255)));
 		lightDiffuseButton
 			.addColorSelectionListener(new IColorSelectionListener() {
 			public void handleColorSelection(RGB rgb) {
 				colorValues[0][0] = ((float) rgb.red) / 255;
 				colorValues[0][1] = ((float) rgb.green) / 255;
 				colorValues[0][2] = ((float) rgb.blue) / 255;
 				setColorValues();
 			}
 		});

 		ColorSelectionGroup lightAmbientButton =
 			new ColorSelectionGroup(lightColorsGroup, SWT.NONE);
 		lightAmbientButton.setText("Ambient");
 		lightAmbientButton.setRGB(
 			new RGB(
 				(int) (colorValues[1][0] * 255),
 				(int) (colorValues[1][1] * 255),
 				(int) (colorValues[1][2] * 255)));
 		lightAmbientButton
 			.addColorSelectionListener(new IColorSelectionListener() {
 			public void handleColorSelection(RGB rgb) {
 				colorValues[1][0] = ((float) rgb.red) / 255;
 				colorValues[1][1] = ((float) rgb.green) / 255;
 				colorValues[1][2] = ((float) rgb.blue) / 255;
 				setColorValues();
 			}
 		});

 		ColorSelectionGroup lightSpecularButton =
 			new ColorSelectionGroup(lightColorsGroup, SWT.NONE);
 		lightSpecularButton.setText("Specular");
 		lightSpecularButton.setRGB(
 			new RGB(
 				(int) (colorValues[2][0] * 255),
 				(int) (colorValues[2][1] * 255),
 				(int) (colorValues[2][2] * 255)));
 		lightSpecularButton
 			.addColorSelectionListener(new IColorSelectionListener() {
 			public void handleColorSelection(RGB rgb) {
 				colorValues[2][0] = ((float) rgb.red) / 255;
 				colorValues[2][1] = ((float) rgb.green) / 255;
 				colorValues[2][2] = ((float) rgb.blue) / 255;
 				setColorValues();
 			}
 		});

 		ColorSelectionGroup lightMainAmbientButton =
 			new ColorSelectionGroup(lightColorsGroup, SWT.NONE);
 		lightMainAmbientButton.setText("Main Ambient");
 		lightMainAmbientButton.setRGB(
 			new RGB(
 				(int) (colorValues[3][0] * 255),
 				(int) (colorValues[3][1] * 255),
 				(int) (colorValues[3][2] * 255)));
 		lightMainAmbientButton
 			.addColorSelectionListener(new IColorSelectionListener() {
 			public void handleColorSelection(RGB rgb) {
 				colorValues[3][0] = ((float) rgb.red) / 255;
 				colorValues[3][1] = ((float) rgb.green) / 255;
 				colorValues[3][2] = ((float) rgb.blue) / 255;
 				setColorValues();
 			}
 		});

 		Group materialColorsGroup = new Group(composite, SWT.NONE);
 		materialColorsGroup.setText("Material Colors");
 		materialColorsGroup.setLayout(new GridLayout());
 		data = new GridData(GridData.FILL_BOTH);
 		materialColorsGroup.setLayoutData(data);

 		ColorSelectionGroup materialDiffuseButton =
 			new ColorSelectionGroup(materialColorsGroup, SWT.NONE);
 		materialDiffuseButton.setText("Diffuse");
 		materialDiffuseButton.setRGB(
 			new RGB(
 				(int) (colorValues[4][0] * 255),
 				(int) (colorValues[4][1] * 255),
 				(int) (colorValues[4][2] * 255)));
 		materialDiffuseButton
 			.addColorSelectionListener(new IColorSelectionListener() {
 			public void handleColorSelection(RGB rgb) {
 				colorValues[4][0] = ((float) rgb.red) / 255;
 				colorValues[4][1] = ((float) rgb.green) / 255;
 				colorValues[4][2] = ((float) rgb.blue) / 255;
 				setColorValues();
 			}
 		});

 		ColorSelectionGroup materialAmbientButton =
 			new ColorSelectionGroup(materialColorsGroup, SWT.NONE);
 		materialAmbientButton.setText("Ambient");
 		materialAmbientButton.setRGB(
 			new RGB(
 				(int) (colorValues[5][0] * 255),
 				(int) (colorValues[5][1] * 255),
 				(int) (colorValues[5][2] * 255)));
 		materialAmbientButton
 			.addColorSelectionListener(new IColorSelectionListener() {
 			public void handleColorSelection(RGB rgb) {
 				colorValues[5][0] = ((float) rgb.red) / 255;
 				colorValues[5][1] = ((float) rgb.green) / 255;
 				colorValues[5][2] = ((float) rgb.blue) / 255;
 				setColorValues();
 			}
 		});

 		ColorSelectionGroup materialSpecularButton =
 			new ColorSelectionGroup(materialColorsGroup, SWT.NONE);
 		materialSpecularButton.setText("Specular");
 		materialSpecularButton.setRGB(
 			new RGB(
 				(int) (colorValues[6][0] * 255),
 				(int) (colorValues[6][1] * 255),
 				(int) (colorValues[6][2] * 255)));
 		materialSpecularButton
 			.addColorSelectionListener(new IColorSelectionListener() {
 			public void handleColorSelection(RGB rgb) {
 				colorValues[6][0] = ((float) rgb.red) / 255;
 				colorValues[6][1] = ((float) rgb.green) / 255;
 				colorValues[6][2] = ((float) rgb.blue) / 255;
 				setColorValues();
 			}
 		});

 		new Label(composite, SWT.NONE).setText("Material Shininess:");
 		final Slider shineSlider = new Slider(composite, SWT.NONE);
 		shineSlider.setIncrement(5);
 		shineSlider.setMaximum(102);
 		shineSlider.setMinimum(0);
 		shineSlider.setThumb(2);
 		shineSlider.setPageIncrement(10);
 		shineSlider.setSelection(25);
 		shineSlider.addListener(SWT.Selection, new Listener() {
 			public void handleEvent(Event e) {
 				materialShininess[0] = shineSlider.getSelection();
 				GL.glMaterialfv(GL.GL_FRONT_AND_BACK,
 					GL.GL_SHININESS,
 					materialShininess);
 			}
 		});
 	}

 	/**
 	 * @see OpenGLTab#dispose()
 	 */
 	void dispose() {
 		super.dispose();
 		GLU.gluDeleteQuadric(quadratic);
 		GL.glDeleteLists(sphere, 1);
 	}

 	/**
 	 * @see OpenGLTab#getTabText()
 	 */
 	String getTabText() {
 		return "Light";
 	}

 	/**
 	 * @see OpenGLTab#init()
 	 */
 	void init() {
 		GL.glClearColor(1.0f, 1.0f, 1.0f, 1.0f);
 		GL.glClearDepth(1.0);
 		setColorValues();
 		GL.glMaterialfv(GL.GL_FRONT_AND_BACK, GL.GL_SHININESS, materialShininess);
 		quadratic = GLU.gluNewQuadric();
 		GLU.gluQuadricNormals(quadratic, GLU.GLU_SMOOTH);
 		GL.glHint(GL.GL_LINE_SMOOTH_HINT, GL.GL_NICEST);
 		GL.glHint(GL.GL_PERSPECTIVE_CORRECTION_HINT, GL.GL_NICEST);
 		GL.glBlendFunc(GL.GL_SRC_ALPHA, GL.GL_ONE_MINUS_SRC_ALPHA);
 		GL.glPointSize(2.0f);
 		GL.glEnable(GL.GL_LIGHTING);
 		GL.glEnable(GL.GL_LIGHT0);
 		GL.glEnable(GL.GL_DEPTH_TEST);
 		sphere = GL.glGenLists(1);
 		GL.glNewList(sphere, GL.GL_COMPILE);
 		GLU.gluSphere(quadratic, 3, 32, 32);
 		GL.glEndList();
 	}

 	/**
 	 * @see OpenGLTab#renderScene()
 	 */
 	void renderScene() {
 		GL.glClear(GL.GL_COLOR_BUFFER_BIT | GL.GL_DEPTH_BUFFER_BIT);
 		GL.glLoadIdentity();
 		GL.glLightfv(GL.GL_LIGHT0, GL.GL_POSITION, lightPosition);
 		GL.glTranslatef(xPos, yPos, zPos);
 		GL.glCallList(sphere);
 	}

 	/**
 	 * Sets the current color values into the rendered display.
 	 */
 	void setColorValues() {
 		GL.glLightfv(GL.GL_LIGHT0, GL.GL_DIFFUSE, colorValues[0]);
 		GL.glMaterialfv(GL.GL_FRONT_AND_BACK, GL.GL_DIFFUSE, colorValues[4]);
 		GL.glMaterialfv(GL.GL_FRONT_AND_BACK, GL.GL_AMBIENT, colorValues[5]);
 		GL.glLightfv(GL.GL_LIGHT0, GL.GL_AMBIENT, colorValues[1]);
 		GL.glLightfv(GL.GL_LIGHT0, GL.GL_SPECULAR, colorValues[2]);
 		GL.glMaterialfv(GL.GL_FRONT_AND_BACK, GL.GL_SPECULAR, colorValues[6]);
 		GL.glLightModelfv(GL.GL_LIGHT_MODEL_AMBIENT, colorValues[3]);
 		GL.glMaterialfv(GL.GL_FRONT_AND_BACK, GL.GL_SHININESS, materialShininess);
 	}
 }
	/*******************************************************************************
	* Copyright (c) 2000, 2003 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
	*******************************************************************************/
	package org.eclipse.swt.opengl.examples;


	import org.eclipse.opengl.*;
	import org.eclipse.swt.*;
	import org.eclipse.swt.graphics.*;
	import org.eclipse.swt.layout.*;
	import org.eclipse.swt.widgets.*;

	class LightTab extends OpenGLTab {
	private float[] materialShininess = { 25.0f };
	private float[] lightPosition = { 0.0f, 0.0f, 0.0f, 1.0f };
	private float[][] colorValues = {
	{ 1.0f, 1.0f, 1.0f, 1.0f }, // light diffuse
	{ 1.0f, 1.0f, 1.0f, 1.0f }, // light ambient
	{ 1.0f, 1.0f, 1.0f, 1.0f }, // light specular
	{ 0.5f, 0.5f, 0.5f, 1.0f }, // light main ambient
	{ 0.0f, 0.0f, 1.0f, 1.0f }, // material diffuse
	{ 0.3f, 0.3f, 0.3f, 1.0f }, // material ambient
	{ 1.0f, 1.0f, 1.0f, 1.0f } // material specular
	};
	private float yPos = 0.0f, xPos = 0.0f, zPos = -20.0f;
	private int quadratic, sphere;

	/**
	* @see OpenGLTab#createControls(Composite)
	*/
	void createControls(Composite composite) {
	Group movementGroup = new Group(composite, SWT.NONE);
	movementGroup.setText("Translation");
	movementGroup.setLayout(new GridLayout(2, false));

	new Label(movementGroup, SWT.NONE).setText("X:");
	final Slider xMove = new Slider(movementGroup, SWT.NONE);
	xMove.setIncrement(1);
	xMove.setMaximum(22);
	xMove.setMinimum(0);
	xMove.setThumb(2);
	xMove.setPageIncrement(2);
	xMove.setSelection(10);
	xMove.addListener(SWT.Selection, new Listener() {
	public void handleEvent(Event e) {
	xPos = xMove.getSelection() - 10;
	}
	});

	new Label(movementGroup, SWT.NONE).setText("Y:");
	final Slider yMove = new Slider(movementGroup, SWT.NONE);
	yMove.setIncrement(1);
	yMove.setMaximum(22);
	yMove.setMinimum(0);
	yMove.setThumb(2);
	yMove.setPageIncrement(2);
	yMove.setSelection(10);
	yMove.addListener(SWT.Selection, new Listener() {
	public void handleEvent(Event e) {
	yPos = yMove.getSelection() - 10;
	}
	});

	new Label(movementGroup, SWT.NONE).setText("Z:");
	final Slider zMove = new Slider(movementGroup, SWT.NONE);
	zMove.setIncrement(1);
	zMove.setMaximum(22);
	zMove.setMinimum(0);
	zMove.setThumb(2);
	zMove.setPageIncrement(2);
	zMove.setSelection(10);
	zMove.addListener(SWT.Selection, new Listener() {
	public void handleEvent(Event e) {
	zPos = zMove.getSelection() - 30;
	}
	});

	Group positionGroup = new Group(composite, SWT.NONE);
	positionGroup.setText("Light Position");
	positionGroup.setLayout(new GridLayout(2, false));

	new Label(positionGroup, SWT.NONE).setText("X:");
	final Slider lightX = new Slider(positionGroup, SWT.NONE);
	lightX.setIncrement(1);
	lightX.setMaximum(22);
	lightX.setMinimum(0);
	lightX.setThumb(2);
	lightX.setPageIncrement(2);
	lightX.setSelection(10);
	lightX.addListener(SWT.Selection, new Listener() {
	public void handleEvent(Event e) {
	lightPosition[0] = ((float) lightX.getSelection() * 10) - 100;
	}
	});

	new Label(positionGroup, SWT.NONE).setText("Y:");
	final Slider lightY = new Slider(positionGroup, SWT.NONE);
	lightY.setIncrement(1);
	lightY.setMaximum(22);
	lightY.setMinimum(0);
	lightY.setThumb(2);
	lightY.setPageIncrement(2);
	lightY.setSelection(10);
	lightY.addListener(SWT.Selection, new Listener() {
	public void handleEvent(Event e) {
	lightPosition[1] = ((float) lightY.getSelection() * 10) - 100;
	}
	});

	new Label(positionGroup, SWT.NONE).setText("Z:");
	final Slider lightZ = new Slider(positionGroup, SWT.NONE);
	lightZ.setIncrement(1);
	lightZ.setMaximum(22);
	lightZ.setMinimum(0);
	lightZ.setThumb(2);
	lightZ.setPageIncrement(2);
	lightZ.setSelection(10);
	lightZ.addListener(SWT.Selection, new Listener() {
	public void handleEvent(Event e) {
	lightPosition[2] = ((float) lightZ.getSelection() * 10) - 20;
	}
	});

	Group lightColorsGroup = new Group(composite, SWT.NONE);
	lightColorsGroup.setText("Light Colors");
	lightColorsGroup.setLayout(new GridLayout());
	GridData data = new GridData(GridData.FILL_BOTH);
	lightColorsGroup.setLayoutData(data);

	ColorSelectionGroup lightDiffuseButton =
	new ColorSelectionGroup(lightColorsGroup, SWT.NONE);
	lightDiffuseButton.setText("Diffuse");
	lightDiffuseButton.setRGB(
	new RGB(
	(int) (colorValues[0][0] * 255),
	(int) (colorValues[0][1] * 255),
	(int) (colorValues[0][2] * 255)));
	lightDiffuseButton
	.addColorSelectionListener(new IColorSelectionListener() {
	public void handleColorSelection(RGB rgb) {
	colorValues[0][0] = ((float) rgb.red) / 255;
	colorValues[0][1] = ((float) rgb.green) / 255;
	colorValues[0][2] = ((float) rgb.blue) / 255;
	setColorValues();
	}
	});

	ColorSelectionGroup lightAmbientButton =
	new ColorSelectionGroup(lightColorsGroup, SWT.NONE);
	lightAmbientButton.setText("Ambient");
	lightAmbientButton.setRGB(
	new RGB(
	(int) (colorValues[1][0] * 255),
	(int) (colorValues[1][1] * 255),
	(int) (colorValues[1][2] * 255)));
	lightAmbientButton
	.addColorSelectionListener(new IColorSelectionListener() {
	public void handleColorSelection(RGB rgb) {
	colorValues[1][0] = ((float) rgb.red) / 255;
	colorValues[1][1] = ((float) rgb.green) / 255;
	colorValues[1][2] = ((float) rgb.blue) / 255;
	setColorValues();
	}
	});

	ColorSelectionGroup lightSpecularButton =
	new ColorSelectionGroup(lightColorsGroup, SWT.NONE);
	lightSpecularButton.setText("Specular");
	lightSpecularButton.setRGB(
	new RGB(
	(int) (colorValues[2][0] * 255),
	(int) (colorValues[2][1] * 255),
	(int) (colorValues[2][2] * 255)));
	lightSpecularButton
	.addColorSelectionListener(new IColorSelectionListener() {
	public void handleColorSelection(RGB rgb) {
	colorValues[2][0] = ((float) rgb.red) / 255;
	colorValues[2][1] = ((float) rgb.green) / 255;
	colorValues[2][2] = ((float) rgb.blue) / 255;
	setColorValues();
	}
	});

	ColorSelectionGroup lightMainAmbientButton =
	new ColorSelectionGroup(lightColorsGroup, SWT.NONE);
	lightMainAmbientButton.setText("Main Ambient");
	lightMainAmbientButton.setRGB(
	new RGB(
	(int) (colorValues[3][0] * 255),
	(int) (colorValues[3][1] * 255),
	(int) (colorValues[3][2] * 255)));
	lightMainAmbientButton
	.addColorSelectionListener(new IColorSelectionListener() {
	public void handleColorSelection(RGB rgb) {
	colorValues[3][0] = ((float) rgb.red) / 255;
	colorValues[3][1] = ((float) rgb.green) / 255;
	colorValues[3][2] = ((float) rgb.blue) / 255;
	setColorValues();
	}
	});

	Group materialColorsGroup = new Group(composite, SWT.NONE);
	materialColorsGroup.setText("Material Colors");
	materialColorsGroup.setLayout(new GridLayout());
	data = new GridData(GridData.FILL_BOTH);
	materialColorsGroup.setLayoutData(data);

	ColorSelectionGroup materialDiffuseButton =
	new ColorSelectionGroup(materialColorsGroup, SWT.NONE);
	materialDiffuseButton.setText("Diffuse");
	materialDiffuseButton.setRGB(
	new RGB(
	(int) (colorValues[4][0] * 255),
	(int) (colorValues[4][1] * 255),
	(int) (colorValues[4][2] * 255)));
	materialDiffuseButton
	.addColorSelectionListener(new IColorSelectionListener() {
	public void handleColorSelection(RGB rgb) {
	colorValues[4][0] = ((float) rgb.red) / 255;
	colorValues[4][1] = ((float) rgb.green) / 255;
	colorValues[4][2] = ((float) rgb.blue) / 255;
	setColorValues();
	}
	});

	ColorSelectionGroup materialAmbientButton =
	new ColorSelectionGroup(materialColorsGroup, SWT.NONE);
	materialAmbientButton.setText("Ambient");
	materialAmbientButton.setRGB(
	new RGB(
	(int) (colorValues[5][0] * 255),
	(int) (colorValues[5][1] * 255),
	(int) (colorValues[5][2] * 255)));
	materialAmbientButton
	.addColorSelectionListener(new IColorSelectionListener() {
	public void handleColorSelection(RGB rgb) {
	colorValues[5][0] = ((float) rgb.red) / 255;
	colorValues[5][1] = ((float) rgb.green) / 255;
	colorValues[5][2] = ((float) rgb.blue) / 255;
	setColorValues();
	}
	});

	ColorSelectionGroup materialSpecularButton =
	new ColorSelectionGroup(materialColorsGroup, SWT.NONE);
	materialSpecularButton.setText("Specular");
	materialSpecularButton.setRGB(
	new RGB(
	(int) (colorValues[6][0] * 255),
	(int) (colorValues[6][1] * 255),
	(int) (colorValues[6][2] * 255)));
	materialSpecularButton
	.addColorSelectionListener(new IColorSelectionListener() {
	public void handleColorSelection(RGB rgb) {
	colorValues[6][0] = ((float) rgb.red) / 255;
	colorValues[6][1] = ((float) rgb.green) / 255;
	colorValues[6][2] = ((float) rgb.blue) / 255;
	setColorValues();
	}
	});

	new Label(composite, SWT.NONE).setText("Material Shininess:");
	final Slider shineSlider = new Slider(composite, SWT.NONE);
	shineSlider.setIncrement(5);
	shineSlider.setMaximum(102);
	shineSlider.setMinimum(0);
	shineSlider.setThumb(2);
	shineSlider.setPageIncrement(10);
	shineSlider.setSelection(25);
	shineSlider.addListener(SWT.Selection, new Listener() {
	public void handleEvent(Event e) {
	materialShininess[0] = shineSlider.getSelection();
	GL.glMaterialfv(GL.GL_FRONT_AND_BACK,
	GL.GL_SHININESS,
	materialShininess);
	}
	});
	}

	/**
	* @see OpenGLTab#dispose()
	*/
	void dispose() {
	super.dispose();
	GLU.gluDeleteQuadric(quadratic);
	GL.glDeleteLists(sphere, 1);
	}

	/**
	* @see OpenGLTab#getTabText()
	*/
	String getTabText() {
	return "Light";
	}

	/**
	* @see OpenGLTab#init()
	*/
	void init() {
	GL.glClearColor(1.0f, 1.0f, 1.0f, 1.0f);
	GL.glClearDepth(1.0);
	setColorValues();
	GL.glMaterialfv(GL.GL_FRONT_AND_BACK, GL.GL_SHININESS, materialShininess);
	quadratic = GLU.gluNewQuadric();
	GLU.gluQuadricNormals(quadratic, GLU.GLU_SMOOTH);
	GL.glHint(GL.GL_LINE_SMOOTH_HINT, GL.GL_NICEST);
	GL.glHint(GL.GL_PERSPECTIVE_CORRECTION_HINT, GL.GL_NICEST);
	GL.glBlendFunc(GL.GL_SRC_ALPHA, GL.GL_ONE_MINUS_SRC_ALPHA);
	GL.glPointSize(2.0f);
	GL.glEnable(GL.GL_LIGHTING);
	GL.glEnable(GL.GL_LIGHT0);
	GL.glEnable(GL.GL_DEPTH_TEST);
	sphere = GL.glGenLists(1);
	GL.glNewList(sphere, GL.GL_COMPILE);
	GLU.gluSphere(quadratic, 3, 32, 32);
	GL.glEndList();
	}

	/**
	* @see OpenGLTab#renderScene()
	*/
	void renderScene() {
	GL.glClear(GL.GL_COLOR_BUFFER_BIT \| GL.GL_DEPTH_BUFFER_BIT);
	GL.glLoadIdentity();
	GL.glLightfv(GL.GL_LIGHT0, GL.GL_POSITION, lightPosition);
	GL.glTranslatef(xPos, yPos, zPos);
	GL.glCallList(sphere);
	}

	/**
	* Sets the current color values into the rendered display.
	*/
	void setColorValues() {
	GL.glLightfv(GL.GL_LIGHT0, GL.GL_DIFFUSE, colorValues[0]);
	GL.glMaterialfv(GL.GL_FRONT_AND_BACK, GL.GL_DIFFUSE, colorValues[4]);
	GL.glMaterialfv(GL.GL_FRONT_AND_BACK, GL.GL_AMBIENT, colorValues[5]);
	GL.glLightfv(GL.GL_LIGHT0, GL.GL_AMBIENT, colorValues[1]);
	GL.glLightfv(GL.GL_LIGHT0, GL.GL_SPECULAR, colorValues[2]);
	GL.glMaterialfv(GL.GL_FRONT_AND_BACK, GL.GL_SPECULAR, colorValues[6]);
	GL.glLightModelfv(GL.GL_LIGHT_MODEL_AMBIENT, colorValues[3]);
	GL.glMaterialfv(GL.GL_FRONT_AND_BACK, GL.GL_SHININESS, materialShininess);
	}
	}