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/*******************************************************************************
* 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.layout.*;
import org.eclipse.swt.widgets.*;
class TextureTab extends OpenGLTab {
private float yrot = 0, zrot = 0;
private float xPos = 0.0f, yPos = 0.0f, zPos = -20;
private int texture = 0;
private float[][][] points = new float[45][45][3];
private final static String IMAGE = "images/splash.bmp";
private final static int SLEEP_LENGTH = 50;
/**
* @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(12);
xMove.setMinimum(0);
xMove.setThumb(2);
xMove.setPageIncrement(2);
xMove.setSelection(5);
xMove.addListener(SWT.Selection, new Listener() {
public void handleEvent(Event e) {
xPos = xMove.getSelection() - 5;
}
});
new Label(movementGroup, SWT.NONE).setText("Y:");
final Slider yMove = new Slider(movementGroup, SWT.NONE);
yMove.setIncrement(1);
yMove.setMaximum(12);
yMove.setMinimum(0);
yMove.setThumb(2);
yMove.setPageIncrement(2);
yMove.setSelection(5);
yMove.addListener(SWT.Selection, new Listener() {
public void handleEvent(Event e) {
yPos = yMove.getSelection() - 5;
}
});
new Label(movementGroup, SWT.NONE).setText("Z:");
final Slider zMove = new Slider(movementGroup, SWT.NONE);
zMove.setIncrement(1);
zMove.setMaximum(24);
zMove.setMinimum(0);
zMove.setThumb(4);
zMove.setPageIncrement(2);
zMove.setSelection(10);
zMove.addListener(SWT.Selection, new Listener() {
public void handleEvent(Event e) {
zPos = zMove.getSelection() - 30;
}
});
}
/**
* @see OpenGLTab#getSleepLength()
*/
int getSleepLength() {
return SLEEP_LENGTH;
}
/**
* @see OpenGLTab#getTabText()
*/
String getTabText() {
return "Texture";
}
/**
* @see OpenGLTab#init()
*/
void init() {
//GL.glClearColor(0.0f, 0.0f, 0.3f, 1.0f);
GL.glClearColor(1.0f, 1.0f, 1.0f, 1.0f);
GL.glClearDepth(1.0f);
int[] textureOut = new int[1];
GL.glGenTextures(1, textureOut);
loadTexture(getGlCanvas(), IMAGE, 0, textureOut);
texture = textureOut[0];
GL.glDepthFunc(GL.GL_LEQUAL);
GL.glPolygonMode(GL.GL_BACK, GL.GL_FILL);
GL.glPolygonMode(GL.GL_FRONT, GL.GL_LINE);
GL.glEnable(GL.GL_LIST_MODE);
GL.glEnable(GL.GL_TEXTURE_2D);
GL.glEnable(GL.GL_DEPTH_TEST);
// initialize points
for (int x = 0; x < 45; x++) {
for (int y = 0; y < 45; y++) {
points[x][y][0] = x / 5.0f - 4.5f;
points[x][y][1] = y / 5.0f - 4.5f;
points[x][y][2] =
(float) Math.sin(
(((x / 5.0f) * 40.0f) / 360.0f) * Math.PI * 2);
}
}
}
/**
* @see OpenGLTab#renderScene()
*/
void renderScene() {
GL.glClear(
GL.GL_COLOR_BUFFER_BIT
| GL.GL_DEPTH_BUFFER_BIT
| GL.GL_STENCIL_BUFFER_BIT);
GL.glLoadIdentity();
GL.glTranslatef(xPos, yPos, zPos);
GL.glRotatef(yrot, 0.0f, 1.0f, 0.0f);
GL.glRotatef(zrot, 0.0f, 0.0f, 1.0f);
GL.glBindTexture(GL.GL_TEXTURE_2D, texture);
GL.glBegin(GL.GL_QUADS);
for (int x = 0; x < 44; x++) {
for (int y = 0; y < 44; y++) {
float fx = x / 44.0f;
float fy = y / 44.0f;
float fxb = (x + 1) / 44.0f;
float fyb = (y + 1) / 44.0f;
GL.glTexCoord2f(fx, fy);
GL.glVertex3f(
points[x][y][0],
points[x][y][1],
points[x][y][2]);
GL.glTexCoord2f(fx, fyb);
GL.glVertex3f(
points[x][y + 1][0],
points[x][y + 1][1],
points[x][y + 1][2]);
GL.glTexCoord2f(fxb, fyb);
GL.glVertex3f(
points[x + 1][y + 1][0],
points[x + 1][y + 1][1],
points[x + 1][y + 1][2]);
GL.glTexCoord2f(fxb, fy);
GL.glVertex3f(
points[x + 1][y][0],
points[x + 1][y][1],
points[x + 1][y][2]);
}
}
GL.glEnd();
// perform wave motion
for (int y = 0; y < 45; y++) {
float hold = points[0][y][2];
for (int x = 0; x < 44; x++) {
points[x][y][2] = points[x + 1][y][2];
}
points[44][y][2] = hold;
}
yrot += 0.9f;
zrot += 0.6f;
}
}
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