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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.graphics.*;
import org.eclipse.swt.layout.*;
import org.eclipse.swt.widgets.*;
class AntialiasingTab extends OpenGLTab {
private Button antiAliasButton;
private float xPos = 0.0f, yPos = 0.0f, zPos = -6.0f;
/**
* @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(12);
zMove.setMinimum(0);
zMove.setThumb(2);
zMove.setPageIncrement(2);
zMove.setSelection(5);
zMove.addListener(SWT.Selection, new Listener() {
public void handleEvent(Event e) {
zPos = zMove.getSelection() - 11;
}
});
antiAliasButton = new Button(composite, SWT.CHECK);
antiAliasButton.setText("Anti-Aliasing");
antiAliasButton.setSelection(true);
antiAliasButton.addListener(SWT.Selection, new Listener() {
public void handleEvent(Event e) {
if (antiAliasButton.getSelection()) {
GL.glEnable(GL.GL_LINE_SMOOTH);
} else {
GL.glDisable(GL.GL_LINE_SMOOTH);
}
}
});
ColorSelectionGroup colorGroup =
new ColorSelectionGroup(composite, SWT.NONE);
colorGroup.setText("Foreground color");
colorGroup.addColorSelectionListener(new IColorSelectionListener() {
public void handleColorSelection(RGB rgb) {
GL.glColor3ub((byte) rgb.red, (byte) rgb.green, (byte) rgb.blue);
}
});
}
/**
* @see OpenGLTab#dispose()
*/
void dispose() {
super.dispose();
GL.glDeleteLists(1, 1);
}
/**
* @see OpenGLTab#getTabText()
*/
String getTabText() {
return "Anti-aliasing";
}
/**
* @see OpenGLTab#init()
*/
void init() {
GL.glClearColor(1.0f, 1.0f, 1.0f, 1.0f);
GL.glColor3f(1.0f, 0.0f, 0.0f);
final float[] BEZIER_POINTS = {
-1.5f, -1.5f, 4.0f, -0.5f, -1.5f, 2.0f, 0.5f, -1.5f,
-1.0f, 1.5f, -1.5f, 2.0f, -1.5f, -0.5f, 1.0f, -0.5f,
-0.5f, 3.0f, 0.5f, -0.5f, 0.0f, 1.5f, -0.5f, -1.0f,
-1.5f, 0.5f, 4.0f, -0.5f, 0.5f, 0.0f, 0.5f, 0.5f,
3.0f, 1.5f, 0.5f, 4.0f, -1.5f, 1.5f, -2.0f, -0.5f,
1.5f, -2.0f, 0.5f, 1.5f, 0.0f, 1.5f, 1.5f, -1.0f,
};
GL.glHint(GL.GL_LINE_SMOOTH_HINT, GL.GL_NICEST);
GL.glBlendFunc(GL.GL_SRC_ALPHA, GL.GL_ONE_MINUS_SRC_ALPHA);
GL.glMap2f(GL.GL_MAP2_VERTEX_3, 0, 1, 3, 4, 0, 1, 12, 4, BEZIER_POINTS);
GL.glMapGrid2f(30, 0.0f, 1.0f, 30, 0.0f, 1.0f);
GL.glEnable(GL.GL_AUTO_NORMAL);
GL.glEnable(GL.GL_LINE_SMOOTH);
GL.glEnable(GL.GL_LINE_STIPPLE);
GL.glEnable(GL.GL_BLEND);
GL.glEnable(GL.GL_MAP2_VERTEX_3);
// create display lists
GL.glNewList(1, GL.GL_COMPILE);
GL.glEvalMesh2(GL.GL_LINE, 0, 30, 0, 30);
GL.glEndList();
}
/**
* @see OpenGLTab#renderScene()
*/
void renderScene() {
GL.glClear(GL.GL_COLOR_BUFFER_BIT);
GL.glLoadIdentity();
GL.glTranslatef(xPos, yPos, zPos);
GL.glCallList(1); // draw the beizer surface
}
}
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