/*
Copyright 2008-2010 Gephi
Authors : Mathieu Bastian <mathieu.bastian@gephi.org>
Website : http://www.gephi.org
This file is part of Gephi.
DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
Copyright 2011 Gephi Consortium. All rights reserved.
The contents of this file are subject to the terms of either the GNU
General Public License Version 3 only ("GPL") or the Common
Development and Distribution License("CDDL") (collectively, the
"License"). You may not use this file except in compliance with the
License. You can obtain a copy of the License at
http://gephi.org/about/legal/license-notice/
or /cddl-1.0.txt and /gpl-3.0.txt. See the License for the
specific language governing permissions and limitations under the
License. When distributing the software, include this License Header
Notice in each file and include the License files at
/cddl-1.0.txt and /gpl-3.0.txt. If applicable, add the following below the
License Header, with the fields enclosed by brackets [] replaced by
your own identifying information:
"Portions Copyrighted [year] [name of copyright owner]"
If you wish your version of this file to be governed by only the CDDL
or only the GPL Version 3, indicate your decision by adding
"[Contributor] elects to include this software in this distribution
under the [CDDL or GPL Version 3] license." If you do not indicate a
single choice of license, a recipient has the option to distribute
your version of this file under either the CDDL, the GPL Version 3 or
to extend the choice of license to its licensees as provided above.
However, if you add GPL Version 3 code and therefore, elected the GPL
Version 3 license, then the option applies only if the new code is
made subject to such option by the copyright holder.
Contributor(s):
Portions Copyrighted 2011 Gephi Consortium.
*/
package org.gephi.visualization.swing;
import com.sun.opengl.util.BufferUtil;
import java.awt.Color;
import java.nio.DoubleBuffer;
import java.nio.IntBuffer;
import javax.media.opengl.GL;
import javax.media.opengl.GLAutoDrawable;
import javax.media.opengl.GLCapabilities;
import javax.media.opengl.GLEventListener;
import javax.media.opengl.glu.GLU;
import org.gephi.visualization.VizController;
import org.gephi.visualization.config.GraphicalConfiguration;
import org.gephi.visualization.opengl.Lighting;
import org.gephi.visualization.screenshot.ScreenshotMaker;
import org.openide.util.Exceptions;
/**
*
* @author Mathieu Bastian
*/
public abstract class GLAbstractListener implements GLEventListener {
protected GLAutoDrawable drawable;
protected VizController vizController;
public static final GLU glu = new GLU();
private static boolean DEBUG = true;
private long startTime = 0;
protected float fps;
protected float fpsAvg = 0;
protected float fpsCount = 0;
private volatile boolean resizing = false;
public final float viewField = 30.0f;
public final float nearDistance = 1.0f;
public final float farDistance = 100000f;
private double aspectRatio = 0;
protected DoubleBuffer projMatrix = BufferUtil.newDoubleBuffer(16);
protected DoubleBuffer modelMatrix = BufferUtil.newDoubleBuffer(16);
protected IntBuffer viewport = BufferUtil.newIntBuffer(4);
protected GraphicalConfiguration graphicalConfiguration;
protected Lighting lighting = new Lighting();
protected ScreenshotMaker screenshotMaker;
protected void initDrawable(GLAutoDrawable drawable) {
this.drawable = drawable;
drawable.addGLEventListener(this);
}
protected abstract void init(GL gl);
protected abstract void render3DScene(GL gl, GLU glu);
protected abstract void reshape3DScene(GL gl);
protected abstract void setCameraPosition(GL gl, GLU glu);
protected GLCapabilities getCaps() {
GLCapabilities caps = new GLCapabilities();
try {
caps.setAlphaBits(8); //if NOT opaque
caps.setDoubleBuffered(true);
caps.setHardwareAccelerated(true);
//FSAA
int antialisaing = vizController.getVizConfig().getAntialiasing();
if (antialisaing == 0) {
caps.setSampleBuffers(false);
} else if (antialisaing == 2) {
caps.setSampleBuffers(true);
caps.setNumSamples(2);
} else if (antialisaing == 4) {
caps.setSampleBuffers(true);
caps.setNumSamples(4);
} else if (antialisaing == 8) {
caps.setSampleBuffers(true);
caps.setNumSamples(8);
} else if (antialisaing == 16) {
caps.setSampleBuffers(true);
caps.setNumSamples(16);
}
} catch (javax.media.opengl.GLException ex) {
Exceptions.printStackTrace(ex);
}
return caps;
}
public void initConfig(GL gl) {
//Disable Vertical synchro
gl.setSwapInterval(0);
//Depth
if (vizController.getVizModel().isUse3d()) {
gl.glEnable(GL.GL_DEPTH_TEST); //Enable Z-Ordering
gl.glDepthFunc(GL.GL_LEQUAL);
gl.glHint(GL.GL_PERSPECTIVE_CORRECTION_HINT, GL.GL_NICEST); //Correct texture & colors perspective calculations
} else {
gl.glDisable(GL.GL_DEPTH_TEST); //Z is set by the order of drawing
}
//Cull face
if (vizController.getVizModel().isCulling()) { //When enabled, increases performance but polygons must be drawn counterclockwise
gl.glEnable(GL.GL_CULL_FACE);
gl.glCullFace(GL.GL_BACK); //Hide back face of polygons
}
//Point Smooth
if (vizController.getVizConfig().isPointSmooth()) { //Only for GL_POINTS
gl.glEnable(GL.GL_POINT_SMOOTH);
gl.glHint(GL.GL_POINT_SMOOTH_HINT, GL.GL_NICEST); //Point smoothing
} else {
gl.glDisable(GL.GL_POINT_SMOOTH);
}
//Light Smooth
if (vizController.getVizConfig().isLineSmooth()) { //Only for GL_LINES
gl.glEnable(GL.GL_LINE_SMOOTH);
if (vizController.getVizConfig().isLineSmoothNicest()) {
gl.glHint(GL.GL_LINE_SMOOTH_HINT, GL.GL_NICEST);
} else {
gl.glHint(GL.GL_LINE_SMOOTH_HINT, GL.GL_FASTEST);
}
} else {
gl.glDisable(GL.GL_LINE_SMOOTH);
}
gl.glClearDepth(1.0f);
//Background
Color backgroundColor = vizController.getVizModel().getBackgroundColor();
gl.glClearColor(backgroundColor.getRed() / 255f, backgroundColor.getGreen() / 255f, backgroundColor.getBlue() / 255f, 1f);
//Lighting
if (vizController.getVizModel().isLighting()) {
gl.glEnable(GL.GL_LIGHTING);
setLighting(gl);
gl.glEnable(GL.GL_NORMALIZE); //Normalise colors when glScale used
gl.glShadeModel(GL.GL_SMOOTH);
} else {
gl.glDisable(GL.GL_LIGHTING);
gl.glShadeModel(GL.GL_FLAT);
}
//Blending
if (vizController.getVizConfig().isBlending()) {
gl.glEnable(GL.GL_BLEND);
if (vizController.getVizConfig().isBlendCinema()) {
gl.glBlendFunc(GL.GL_CONSTANT_COLOR, GL.GL_ONE_MINUS_SRC_ALPHA); //Black display
} else {
gl.glBlendFunc(GL.GL_SRC_ALPHA, GL.GL_ONE_MINUS_SRC_ALPHA); //Use alpha values correctly
}
}
//Material
if (vizController.getVizModel().isMaterial()) {
gl.glColorMaterial(GL.GL_FRONT, GL.GL_AMBIENT_AND_DIFFUSE);
gl.glEnable(GL.GL_COLOR_MATERIAL); //Use color and avoid using glMaterial
}
//Mesh view
if (vizController.getVizConfig().isWireFrame()) {
gl.glPolygonMode(GL.GL_FRONT_AND_BACK, GL.GL_LINE);
}
gl.glEnable(GL.GL_TEXTURE_2D);
}
protected void setLighting(GL gl) {
lighting = new Lighting();
lighting.glInit(gl);
}
@Override
public void init(GLAutoDrawable drawable) {
GL gl = drawable.getGL();
graphicalConfiguration = new GraphicalConfiguration();
graphicalConfiguration.checkGeneralCompatibility(gl);
//Reinit viewport, to ensure reshape to perform
viewport = BufferUtil.newIntBuffer(4);
resizing = false;
initConfig(gl);
init(gl);
}
@Override
public void display(GLAutoDrawable drawable) {
//Screenshot
screenshotMaker.openglSignal(drawable);
//FPS
if (startTime == 0) {
startTime = System.currentTimeMillis() - 1;
}
long endTime = System.currentTimeMillis();
long delta = endTime - startTime;
startTime = endTime;
fps = 1000.0f / delta;
if (fps < 100) {
fpsAvg = (fpsAvg * fpsCount + fps) / ++fpsCount;
}
GL gl = drawable.getGL();
if (vizController.getVizModel().isUse3d()) {
gl.glClear(GL.GL_COLOR_BUFFER_BIT | GL.GL_DEPTH_BUFFER_BIT);
} else {
gl.glClear(GL.GL_COLOR_BUFFER_BIT);
}
render3DScene(gl, glu);
}
public void reshape(GLAutoDrawable drawable, int x, int y, int width, int height) {
if (!resizing) {
if (viewport.get(2) == width && viewport.get(3) == height)//NO need
{
return;
}
resizing = true;
if (height == 0) {
height = 1;
}
if (width == 0) {
width = 1;
}
int viewportW = 0, viewportH = 0, viewportX = width, viewportY = height;
aspectRatio = (double) width / (double) height;
viewportH = height;
viewportW = (int) (height * aspectRatio);
if (viewportW > width) {
viewportW = width;
viewportH = (int) (width * (1 / aspectRatio));
}
viewportX = ((width - viewportW) / 2);
viewportY = ((height - viewportH) / 2);
GL gl = drawable.getGL();
gl.glViewport(viewportX, viewportY, viewportW, viewportH);
gl.glGetIntegerv(GL.GL_VIEWPORT, viewport);//Update viewport buffer
gl.glMatrixMode(GL.GL_PROJECTION);
gl.glLoadIdentity();
glu.gluPerspective(viewField, aspectRatio, nearDistance, farDistance);
gl.glGetDoublev(GL.GL_PROJECTION_MATRIX, projMatrix);//Update projection buffer
gl.glMatrixMode(GL.GL_MODELVIEW);
gl.glLoadIdentity();
reshape3DScene(drawable.getGL());
if (DEBUG) {
DEBUG = false;
System.err.println("GL_VENDOR: " + gl.glGetString(GL.GL_VENDOR));
System.err.println("GL_RENDERER: " + gl.glGetString(GL.GL_RENDERER));
System.err.println("GL_VERSION: " + gl.glGetString(GL.GL_VERSION));
}
resizing = false;
}
}
public GL getGL() {
return drawable.getGL();
}
@Override
public void displayChanged(GLAutoDrawable arg0, boolean arg1, boolean arg2) {
}
public void setVizController(VizController vizController) {
this.vizController = vizController;
}
public GLAutoDrawable getGLAutoDrawable() {
return drawable;
}
public Lighting getLighting() {
return lighting;
}
public GraphicalConfiguration getGraphicalConfiguration() {
return graphicalConfiguration;
}
protected void resetFpsAverage() {
fpsAvg = 0;
fpsCount = 0;
}
protected float getFpsAverage() {
return fpsAvg;
}
}