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processing4/opengl/PGraphicsGL.java

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/* -*- mode: jde; c-basic-offset: 2; indent-tabs-mode: nil -*- */
/*
PGraphicsGL - opengl version of the graphics engine
Part of the Processing project - http://processing.org
Copyright (c) 2004-05 Ben Fry and Casey Reas
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General
Public License along with this library; if not, write to the
Free Software Foundation, Inc., 59 Temple Place, Suite 330,
Boston, MA 02111-1307 USA
*/
package processing.opengl;
import processing.core.*;
import java.awt.*;
import java.awt.font.*;
import java.awt.geom.*;
import java.lang.reflect.*;
import net.java.games.jogl.*;
/**
* Implementation of the PGraphics API that employs OpenGL rendering via JOGL.
* <p/>
* JOGL requires Java 1.4 or higher, so there are no restrictions on this
* code to be compatible with Java 1.1 or Java 1.3.
* <p/>
* This code relies on PGraphics3 for all lighting and transformations.
* Meaning that translate(), rotate(), and any lighting will be done in
* PGraphics3, and OpenGL is only used to blit lines and triangles as fast
* as it possibly can.
* <p/>
* For this reason, OpenGL may not be accelerated as far as it could be,
* but I don't have the time to maintain two separate versions of the
* renderer. My development time must always be focused on implementation
* and covering features first, and optimizing later.
* <p/>
* Further, the difference may be negligible, as the primary slowdown
* in Java is moving pixels (i.e. a large frame buffer is nearly impossible
* because Java just can't do a MemoryImageSource at screen resolution)
* and the overhead from JNI tends to be significant. In the latter case,
* we may even save time in some cases where a large number of calls to
* OpenGL would otherwise be used, but that's probably a stretch.
* <p/>
* The code is also very messy, while features are being added and
* removed rapidly as we head towards 1.0. Things got particularly ugly
* as we approached beta while both Simon and I were working on it.
* Relax, we'll get it fixed up later.
*/
public class PGraphicsGL extends PGraphics3 {
public GL gl;
public GLU glu;
public GLCanvas canvas;
protected float[] projectionFloats;
GLUtesselator tobj;
TessCallback tessCallback;
/**
* true if the host system is big endian (PowerPC, MIPS, SPARC),
* false if little endian (x86 Intel).
*/
static public boolean BIG_ENDIAN =
System.getProperty("sun.cpu.endian").equals("big");
/**
* Create a new PGraphicsGL at the specified size.
* <P/>
* Unlike other PGraphics objects, the PApplet object passed in cannot
* be null for this renderer because OpenGL uses a special Canvas
* object that must be added to a component (the host PApplet, in this case)
* that is visible on screen in order to work properly.
* @param applet the host applet
*/
public PGraphicsGL(int width, int height, PApplet applet) {
//System.out.println("creating PGraphicsGL");
if (applet == null) {
throw new RuntimeException("The applet passed to PGraphicsGL " +
"cannot be null");
}
//System.out.println("creating PGraphicsGL 2");
GLCapabilities capabilities = new GLCapabilities();
canvas = GLDrawableFactory.getFactory().createGLCanvas(capabilities);
//System.out.println("creating PGraphicsGL 3");
final PApplet parent = applet;
canvas.addGLEventListener(new GLEventListener() {
public void display(GLDrawable drawable) {
parent.display(); // this means it's time to go
}
public void init(GLDrawable drawable) { }
public void displayChanged(GLDrawable drawable,
boolean modeChanged,
boolean deviceChanged) { }
public void reshape(GLDrawable drawable,
int x, int y, int width, int height) { }
});
//System.out.println("creating PGraphicsGL 4");
applet.setLayout(null);
applet.add(canvas);
canvas.setBounds(0, 0, width, height);
//System.out.println("creating PGraphicsGL 5");
//System.out.println("adding canvas listeners");
canvas.addMouseListener(applet);
canvas.addMouseMotionListener(applet);
canvas.addKeyListener(applet);
canvas.addFocusListener(applet);
//System.out.println("creating PGraphicsGL 6");
// need to get proper opengl context since will be needed below
gl = canvas.getGL();
glu = canvas.getGLU();
//System.out.println("creating PGraphicsGL 7");
// this sets width/height and calls allocate() in PGraphics
resize(width, height);
//defaults(); // call this just before setup instead
tobj = glu.gluNewTess();
// unfortunately glu.gluDeleteTess(tobj); is never called
//glu.gluTessProperty(tobj, GLU.GLU_TESS_WINDING_RULE,
// GLU.GLU_TESS_WINDING_NONZERO);
//glu.gluTessProperty(tobj, GLU.GLU_TESS_WINDING_RULE,
// GLU.GLU_TESS_WINDING_POSITIVE);
//GLU.GLU_TESS_WINDING_ODD);
//glu.gluTessProperty(tobj, GLU.GLU_TESS_BOUNDARY_ONLY,
// GL.GL_TRUE);
tessCallback = new TessCallback(); //gl, glu);
glu.gluTessCallback(tobj, GLU.GLU_TESS_BEGIN, tessCallback);
glu.gluTessCallback(tobj, GLU.GLU_TESS_END, tessCallback);
glu.gluTessCallback(tobj, GLU.GLU_TESS_VERTEX, tessCallback);
glu.gluTessCallback(tobj, GLU.GLU_TESS_COMBINE, tessCallback);
glu.gluTessCallback(tobj, GLU.GLU_TESS_ERROR, tessCallback);
//System.out.println("done creating gl");
}
protected boolean displayed = false;
// main applet thread requests an update,
// but PGraphics has to respond back by calling PApplet.display()
public void requestDisplay(PApplet parent) {
//System.out.println("requesting display");
if (!displayed) {
// these two method calls (and explanations) were taken from
// the FpsAnimator implementation from the jogl hoo-ha
// Try to get OpenGL context optimization since we know we
// will be rendering this one drawable continually from
// this thread; make the context current once instead of
// making it current and freeing it each frame.
canvas.setRenderingThread(Thread.currentThread());
//System.out.println(Thread.currentThread());
// Since setRenderingThread is currently advisory (because
// of the poor JAWT implementation in the Motif AWT, which
// performs excessive locking) we also prevent repaint(),
// which is called from the AWT thread, from having an
// effect for better multithreading behavior. This call is
// not strictly necessary, but if end users write their
// own animation loops which update multiple drawables per
// tick then it may be necessary to enforce the order of
// updates.
canvas.setNoAutoRedrawMode(true);
// maybe this will help?
//canvas.requestFocus();
// done with this business
displayed = true;
}
// request a display from the gl canvas. when it happens,
// we'll hear about it from the GLEventListener, which will
// in turn call PApplet.display()... hold your breath...
try {
canvas.display();
} catch (GLException e) {
Throwable t = e.getCause();
// if InvocationTargetException, need to unpack one level first
if (t instanceof InvocationTargetException) {
Throwable target = ((InvocationTargetException) t).getTargetException();
throw new RuntimeException(target);
} else {
throw new RuntimeException(t);
}
} catch (Exception e) {
throw new RuntimeException(e);
}
}
/*
// this was additional stuff used when the animator
// thread was being shut down.. how to handle this..
// (doesn't seem to be needed?)
drawable.setNoAutoRedrawMode(false);
try {
// The surface is already unlocked and rendering
// thread is already null if an exception occurred
// during display(), so don't disable the rendering
// thread again.
if (noException) {
drawable.setRenderingThread(null);
}
} finally {
synchronized (PAppletThreadGL.this) {
thread = null;
PAppletThreadGL.this.notify();
}
}
*/
/**
* Called by resize(), but nothing to allocate for an OpenGL canvas
* because OpenGL's pixel buffer is all handled internally.
*/
protected void allocate() {
// changing for 0100, need to resize rather than re-allocate
canvas.setSize(width, height);
}
// public void defaults() { }
/*
private void syncMatrices()
{
gl.glMatrixMode(GL.GL_PROJECTION);
gl.glLoadMatrixf(new float[] {
projection.m00, projection.m10, projection.m20, projection.m30,
projection.m01, projection.m11, projection.m21, projection.m31,
projection.m02, projection.m12, projection.m22, projection.m32,
projection.m03, projection.m13, projection.m23, projection.m33
});
gl.glMatrixMode(GL.GL_MODELVIEW);
gl.glLoadIdentity();
gl.glScalef(1, -1, 1);
}
*/
/*
public void clearLights() {
super.clearLights();
for (int i = 0; i < MAX_LIGHTS; i++) {
lightDisable(i);
}
}
*/
public void beginFrame() {
super.beginFrame();
report("top beginFrame()");
gl.glDisable(GL.GL_LIGHTING);
for (int i = 0; i < MAX_LIGHTS; i++) {
gl.glDisable(GL.GL_LIGHT0 + i);
}
//syncMatrices();
gl.glMatrixMode(GL.GL_PROJECTION);
if (projectionFloats == null) {
projectionFloats = new float[] {
projection.m00, projection.m10, projection.m20, projection.m30,
projection.m01, projection.m11, projection.m21, projection.m31,
projection.m02, projection.m12, projection.m22, projection.m32,
projection.m03, projection.m13, projection.m23, projection.m33
};
} else {
projectionFloats[0] = projection.m00;
projectionFloats[1] = projection.m10;
projectionFloats[2] = projection.m20;
projectionFloats[3] = projection.m30;
projectionFloats[4] = projection.m01;
projectionFloats[5] = projection.m11;
projectionFloats[6] = projection.m21;
projectionFloats[7] = projection.m31;
projectionFloats[8] = projection.m02;
projectionFloats[9] = projection.m12;
projectionFloats[10] = projection.m22;
projectionFloats[11] = projection.m32;
projectionFloats[12] = projection.m03;
projectionFloats[13] = projection.m13;
projectionFloats[14] = projection.m23;
projectionFloats[15] = projection.m33;
}
gl.glLoadMatrixf(projectionFloats);
gl.glMatrixMode(GL.GL_MODELVIEW);
gl.glLoadIdentity();
gl.glScalef(1, -1, 1);
// these are necessary for alpha (i.e. fonts) to work
gl.glEnable(GL.GL_BLEND);
gl.glBlendFunc(GL.GL_SRC_ALPHA, GL.GL_ONE_MINUS_SRC_ALPHA);
// this is necessary for 3D drawing
if (hints[DISABLE_DEPTH_TEST]) {
gl.glDisable(GL.GL_DEPTH_TEST);
} else {
gl.glEnable(GL.GL_DEPTH_TEST);
}
// use <= since that's what processing.core does
gl.glDepthFunc(GL.GL_LEQUAL);
// because y is flipped
gl.glFrontFace(GL.GL_CW);
// coloured stuff
gl.glEnable(GL.GL_COLOR_MATERIAL);
gl.glColorMaterial(GL.GL_FRONT_AND_BACK, GL.GL_AMBIENT_AND_DIFFUSE);
gl.glColorMaterial(GL.GL_FRONT_AND_BACK, GL.GL_SPECULAR);
// these tend to make life easier
// (but sometimes at the expense of a little speed)
// Not using them right now because we're doing our own lighting.
//gl.glEnable(GL.GL_NORMALIZE);
//gl.glEnable(GL.GL_AUTO_NORMAL); // I think this is OpenGL 1.2 only
//gl.glEnable(GL.GL_RESCALE_NORMAL);
//gl.GlLightModeli(GL.GL_LIGHT_MODEL_COLOR_CONTROL, GL_SEPARATE_SPECULAR_COLOR);
report("bot beginFrame()");
// are there other things to do here?
//System.out.println("beginFrame() stop error " + PApplet.hex(gl.glGetError()));
}
public void endFrame() {
//System.out.println("endFrame() error " + PApplet.hex(gl.glGetError()));
report("top endFrame()");
if (hints[DEPTH_SORT]) {
if (triangleCount > 0) {
depth_sort_triangles();
render_triangles();
}
if (lineCount > 0) {
depth_sort_lines();
render_lines();
}
}
//gl.glPopMatrix();
report("bot endFrame()");
}
// For now we do our own lighting (so sum the specular
// and diffuse light colors...)
protected void handle_lighting() {
super.handle_lighting();
for (int i = vertex_start; i < vertex_end; i++) {
float v[] = vertices[i];
v[R] = min(ONE, v[R] + v[SPR]);
v[G] = min(ONE, v[G] + v[SPG]);
v[B] = min(ONE, v[B] + v[SPB]);
}
}
protected void render_triangles() {
report("into triangles");
//System.out.println("rendering " + triangleCount + " triangles");
for (int i = 0; i < triangleCount; i ++) {
//System.out.println("rendering triangle " + i);
float a[] = vertices[triangles[i][VERTEX1]];
float b[] = vertices[triangles[i][VERTEX2]];
float c[] = vertices[triangles[i][VERTEX3]];
// This is only true when not textured. We really should pass SPECULAR
// straight through to triangle rendering.
float ar = min(1, triangleColors[i][0][TRI_DIFFUSE_R] +
triangleColors[i][0][TRI_SPECULAR_R]);
float ag = min(1, triangleColors[i][0][TRI_DIFFUSE_G] +
triangleColors[i][0][TRI_SPECULAR_G]);
float ab = min(1, triangleColors[i][0][TRI_DIFFUSE_B] +
triangleColors[i][0][TRI_SPECULAR_B]);
float br = min(1, triangleColors[i][1][TRI_DIFFUSE_R] +
triangleColors[i][1][TRI_SPECULAR_R]);
float bg = min(1, triangleColors[i][1][TRI_DIFFUSE_G] +
triangleColors[i][1][TRI_SPECULAR_G]);
float bb = min(1, triangleColors[i][1][TRI_DIFFUSE_B] +
triangleColors[i][1][TRI_SPECULAR_B]);
float cr = min(1, triangleColors[i][2][TRI_DIFFUSE_R] +
triangleColors[i][2][TRI_SPECULAR_R]);
float cg = min(1, triangleColors[i][2][TRI_DIFFUSE_G] +
triangleColors[i][2][TRI_SPECULAR_G]);
float cb = min(1, triangleColors[i][2][TRI_DIFFUSE_B] +
triangleColors[i][2][TRI_SPECULAR_B]);
if (raw != null) {
raw.colorMode(RGB, 1);
raw.noStroke();
raw.beginShape(TRIANGLES);
}
int textureIndex = triangles[i][TEXTURE_INDEX];
if (textureIndex != -1) {
//System.out.println("texture drawing");
PImage texture = textures[textureIndex];
report("before enable");
//gl.glEnable(GL.GL_TEXTURE_2D);
report("after enable");
ImageCache cash = (ImageCache) texture.cache; // as in johnny
if (cash == null) {
// make sure this thing is cached and a power of 2
//if (texture.cache == null) {
cache(texture);
cash = (ImageCache) texture.cache;
// mark for update (nope, already updated)
//texture.updatePixels(0, 0, texture.width, texture.height);
//texture.modified = true;
} else if (texture.modified) {
// TODO make this more efficient and just update a sub-part
// based on mx1 et al, also use gl function to update
// only a sub-portion of the image.
//cash.update(texture.pixels, texture.width, texture.height);
cash.update(texture);
gl.glTexImage2D(GL.GL_TEXTURE_2D, 0, 4,
cash.twidth, cash.theight,
0, GL.GL_RGBA, GL.GL_UNSIGNED_BYTE,
//0, GL.GL_BGRA_EXT, GL.GL_UNSIGNED_BYTE,
cash.tpixels);
report("re-binding " + cash.twidth + " " +
cash.theight + " " + cash.tpixels);
gl.glTexParameterf(GL.GL_TEXTURE_2D,
GL.GL_TEXTURE_WRAP_S, GL.GL_CLAMP);
gl.glTexParameterf(GL.GL_TEXTURE_2D,
GL.GL_TEXTURE_WRAP_T, GL.GL_CLAMP);
gl.glTexParameterf(GL.GL_TEXTURE_2D,
GL.GL_TEXTURE_MAG_FILTER, GL.GL_LINEAR);
gl.glTexParameterf(GL.GL_TEXTURE_2D,
GL.GL_TEXTURE_MIN_FILTER, GL.GL_LINEAR);
report("re-binding 3");
gl.glTexEnvf(GL.GL_TEXTURE_ENV,
GL.GL_TEXTURE_ENV_MODE, GL.GL_MODULATE);
// actually bind this feller
texture.modified = false;
}
report("before bind");
//System.out.println(gl.glIsTexture(image.tindex));
//GL_PERSPECTIVE_CORRECTION_HINT to GL_NICEST
// and running the example again. To do this, use glHint().
// these don't seem to do much
//gl.glPixelStorei(GL.GL_UNPACK_ALIGNMENT, 1);
//gl.glPixelStorei(GL.GL_UNPACK_SWAP_BYTES, 1);
int tindex = ((ImageCache) texture.cache).tindex;
gl.glBindTexture(GL.GL_TEXTURE_2D, tindex);
//if (image.format == ALPHA) {
//System.out.println("binding with replace");
// gl.glTexEnvf(GL.GL_TEXTURE_ENV,
// GL.GL_TEXTURE_ENV_MODE, GL.GL_REPLACE);
//} else {
//gl.glTexEnvf(GL.GL_TEXTURE_ENV,
// GL.GL_TEXTURE_ENV_MODE, GL.GL_MODULATE);
//}
report("after bind");
/*
} else {
cache(texture);
cash = (ImageCache) texture.cache;
report("non-binding 0");
// may be needed for windows
report("non-binding 1");
gl.glTexImage2D(GL.GL_TEXTURE_2D, 0, 4,
cash.twidth, cash.theight,
0, GL.GL_BGRA_EXT, GL.GL_UNSIGNED_BYTE,
cash.tpixels);
report("non-binding 2 " + cash.twidth + " " +
cash.theight + " " + cash.tpixels);
gl.glTexParameterf(GL.GL_TEXTURE_2D,
GL.GL_TEXTURE_WRAP_S, GL.GL_CLAMP);
gl.glTexParameterf(GL.GL_TEXTURE_2D,
GL.GL_TEXTURE_WRAP_T, GL.GL_CLAMP);
gl.glTexParameterf(GL.GL_TEXTURE_2D,
GL.GL_TEXTURE_MAG_FILTER, GL.GL_LINEAR);
gl.glTexParameterf(GL.GL_TEXTURE_2D,
GL.GL_TEXTURE_MIN_FILTER, GL.GL_LINEAR);
report("non-binding 3");
gl.glTexEnvf(GL.GL_TEXTURE_ENV,
GL.GL_TEXTURE_ENV_MODE, GL.GL_MODULATE);
}
*/
float uscale = (float) texture.width / (float) cash.twidth;
float vscale = (float) texture.height / (float) cash.theight;
gl.glEnable(GL.GL_TEXTURE_2D);
gl.glBegin(GL.GL_TRIANGLES);
gl.glColor4f(ar, ag, ab, a[A]);
gl.glTexCoord2f(a[U] * uscale, a[V] * vscale);
gl.glNormal3f(a[NX], a[NY], a[NZ]);
gl.glVertex3f(a[VX], a[VY], a[VZ]);
gl.glColor4f(br, bg, bb, b[A]);
gl.glTexCoord2f(b[U] * uscale, b[V] * vscale);
gl.glNormal3f(b[NX], b[NY], b[NZ]);
gl.glVertex3f(b[VX], b[VY], b[VZ]);
gl.glColor4f(cr, cg, cb, c[A]);
gl.glTexCoord2f(c[U] * uscale, c[V] * vscale);
gl.glNormal3f(c[NX], c[NY], c[NZ]);
gl.glVertex3f(c[VX], c[VY], c[VZ]);
gl.glEnd();
report("non-binding 6");
gl.glDisable(GL.GL_TEXTURE_2D);
if (raw != null) {
raw.texture(texture);
raw.fill(ar, ag, ab, a[A]);
raw.vertex(a[VX], a[VY], a[U] * uscale, a[V] * vscale);
raw.fill(br, bg, bb, b[A]);
raw.vertex(b[VX], b[VY], b[U] * uscale, b[V] * vscale);
raw.fill(cr, cg, cb, c[A]);
raw.vertex(c[VX], c[VY], c[U] * uscale, c[V] * vscale);
}
} else {
gl.glBegin(GL.GL_TRIANGLES);
//System.out.println("tri " + a[VX] + " " + a[VY] + " " + a[VZ]);
//System.out.println(" " + b[VX] + " " + b[VY] + " " + b[VZ]);
//System.out.println(" " + c[VX] + " " + c[VY] + " " + c[VZ]);
gl.glColor4f(ar, ag, ab, a[A]);
gl.glNormal3f(a[NX], a[NY], a[NZ]);
gl.glVertex3f(a[VX], a[VY], a[VZ]);
gl.glColor4f(br, bg, bb, b[A]);
gl.glNormal3f(b[NX], b[NY], b[NZ]);
gl.glVertex3f(b[VX], b[VY], b[VZ]);
gl.glColor4f(cr, cg, cb, c[A]);
gl.glNormal3f(c[NX], c[NY], c[NZ]);
gl.glVertex3f(c[VX], c[VY], c[VZ]);
if (raw != null) {
raw.fill(ar, ag, ab, a[A]);
raw.vertex(a[VX], a[VY]);
raw.fill(br, bg, bb, b[A]);
raw.vertex(b[VX], b[VY]);
raw.fill(cr, cg, cb, c[A]);
raw.vertex(c[VX], c[VY]);
}
gl.glEnd();
}
}
if (raw != null) {
raw.endShape();
}
report("out of triangles");
}
public void render_lines() {
report("render_lines in");
int i = 0;
for (int j = 0; j < pathCount; j++) {
float sw = vertices[lines[i][VERTEX1]][SW];
//report("render_lines 1");
// stroke weight zero will cause a gl error
//if (lines[i][STROKE_WEIGHT] == 0) continue;
if (sw == 0) continue;
// glLineWidth has to occur outside glBegin/glEnd
//gl.glLineWidth(lines[i][STROKE_WEIGHT]);
gl.glLineWidth(sw);
//report("render_lines 2 " + lines[i][STROKE_WEIGHT]);
gl.glBegin(GL.GL_LINE_STRIP);
if (raw != null) {
raw.strokeWeight(sw);
}
// always draw a first point
float a[] = vertices[lines[i][VERTEX1]];
gl.glColor4f(a[SR], a[SG], a[SB], a[SA]);
gl.glVertex3f(a[VX], a[VY], a[VZ]);
//System.out.println("First point: " + a[VX] +", "+ a[VY] +", "+ a[VZ]);
if (raw != null) {
if (a[SA] > EPSILON) { // don't draw if transparent
raw.colorMode(RGB, 1);
raw.beginShape(LINE_STRIP);
raw.stroke(a[SR], a[SG], a[SB], a[SA]);
raw.vertex(a[VX], a[VY]);
}
}
// on this and subsequent lines, only draw the second point
//System.out.println(pathLength[j]);
for (int k = 0; k < pathLength[j]; k++) {
float b[] = vertices[lines[i][VERTEX2]];
gl.glColor4f(b[SR], b[SG], b[SB], b[SA]);
gl.glVertex3f(b[VX], b[VY], b[VZ]);
if (raw != null) {
raw.stroke(b[SR], b[SG], b[SB], b[SA]);
raw.vertex(b[VX], b[VY]);
}
i++;
}
if (raw != null) {
raw.endShape();
}
gl.glEnd();
}
report("render_lines out");
}
/**
* Handled entirely by OpenGL, so use this to override the superclass.
*/
//protected void light_and_transform() {
//}
//////////////////////////////////////////////////////////////
/**
* Cache an image using a specified glTexName
* (name is just an integer index).
* <p/>
* If a cacheIndex is already assigned in the image,
* this request will be ignored.
*/
protected void cache(PImage image) {
if (image.cache != null) return;
int names[] = new int[1];
gl.glGenTextures(1, names);
int index = names[0];
//if (image.tindex != -1) return;
// use glGetIntegerv with the argument GL_MAX_TEXTURE_SIZE
// to figure out min/max texture sizes
//report("into cache");
//image.modified();
image.cache = new ImageCache();
ImageCache cash = (ImageCache) image.cache;
//cash.update(image.pixels, image.width, image.height);
cash.update(image);
// first-time binding of entire texture
gl.glEnable(GL.GL_TEXTURE_2D);
gl.glPixelStorei(GL.GL_UNPACK_ALIGNMENT, 1);
//gl.glPixelStorei(GL.GL_UNPACK_SWAP_BYTES, 0);
gl.glBindTexture(GL.GL_TEXTURE_2D, index);
gl.glTexImage2D(GL.GL_TEXTURE_2D, 0, 4, cash.twidth, cash.theight,
0, GL.GL_RGBA, GL.GL_UNSIGNED_BYTE, cash.tpixels);
gl.glTexParameterf(GL.GL_TEXTURE_2D,
//GL.GL_TEXTURE_MAG_FILTER, GL.GL_NEAREST);
GL.GL_TEXTURE_MAG_FILTER, GL.GL_LINEAR);
gl.glTexParameterf(GL.GL_TEXTURE_2D,
//GL.GL_TEXTURE_MIN_FILTER, GL.GL_NEAREST);
GL.GL_TEXTURE_MIN_FILTER, GL.GL_LINEAR);
/*
int err = glu.gluBuild2DMipmaps(GL.GL_TEXTURE_2D, 4,
image.width, image.height,
GL.GL_RGBA,
//GL.GL_ALPHA,
GL.GL_UNSIGNED_BYTE, image.pixels);
//System.out.println("mipmap: " + err);
gl.glTexParameterf(GL.GL_TEXTURE_2D, GL.GL_TEXTURE_MAG_FILTER,
GL.GL_NEAREST_MIPMAP_NEAREST);
gl.glTexParameterf(GL.GL_TEXTURE_2D, GL.GL_TEXTURE_MIN_FILTER,
GL.GL_NEAREST_MIPMAP_LINEAR);
*/
//gl.glTexParameterf(GL.GL_TEXTURE_2D, GL.GL_TEXTURE_WRAP_S, GL.GL_CLAMP);
//gl.glTexParameterf(GL.GL_TEXTURE_2D, GL.GL_TEXTURE_WRAP_T, GL.GL_CLAMP);
gl.glTexEnvf(GL.GL_TEXTURE_ENV, GL.GL_TEXTURE_ENV_MODE, GL.GL_MODULATE);
//gl.glDisable(GL.GL_TEXTURE_2D);
cash.tindex = index;
}
class ImageCache {
int tindex;
int tpixels[];
int twidth, theight;
//public void update(int pixels[], int width, int height) {
public void update(PImage source) {
tindex = -1;
// bit shifting this might be more efficient
int width2 =
(int) Math.pow(2, Math.ceil(Math.log(source.width) / Math.log(2)));
int height2 =
(int) Math.pow(2, Math.ceil(Math.log(source.height) / Math.log(2)));
if ((width2 > twidth) || (height2 > theight)) {
// either twidth/theight are zero, or size has changed
tpixels = null;
}
if (tpixels == null) {
twidth = width2;
theight = height2;
tpixels = new int[twidth * theight];
}
// copy image data into the texture
int p = 0;
int t = 0;
//if (System.getProperty("sun.cpu.endian").equals("big")) {
if (BIG_ENDIAN) {
switch (source.format) {
case ALPHA:
for (int y = 0; y < source.height; y++) {
for (int x = 0; x < source.width; x++) {
tpixels[t++] = 0xFFFFFF00 | source.pixels[p++];
}
t += twidth - source.width;
}
break;
case RGB:
//System.out.println("swapping RGB");
for (int y = 0; y < source.height; y++) {
for (int x = 0; x < source.width; x++) {
int pixel = source.pixels[p++];
tpixels[t++] = (pixel << 8) | 0xff;
//tpixels[t++] = pixel; // nice effect, actually
}
t += twidth - source.width;
}
break;
case ARGB:
//System.out.println("gonna swap ARGB");
for (int y = 0; y < source.height; y++) {
for (int x = 0; x < source.width; x++) {
int pixel = source.pixels[p++];
tpixels[t++] = (pixel << 8) | ((pixel >> 24) & 0xff);
}
t += twidth - source.width;
}
break;
}
} else {
// ARGB native, and RGBA opengl means ABGR on windows
// for the most part just need to swap two components here
// the sun.cpu.endian here might be "false", oddly enough..
// (that's why just using an "else", rather than check for "little")
switch (source.format) {
case ALPHA:
for (int y = 0; y < source.height; y++) {
for (int x = 0; x < source.width; x++) {
tpixels[t++] = (source.pixels[p++] << 24) | 0x00FFFFFF;
}
t += twidth - source.width;
}
break;
case RGB:
for (int y = 0; y < source.height; y++) {
for (int x = 0; x < source.width; x++) {
int pixel = source.pixels[p++];
// needs to be ABGR, stored in memory xRGB
// so R and B must be swapped, and the x just made FF
tpixels[t++] =
0xff000000 | // force opacity for good measure
((pixel & 0xFF) << 16) |
((pixel & 0xFF0000) >> 16) |
(pixel & 0x0000FF00);
}
t += twidth - source.width;
}
break;
case ARGB:
for (int y = 0; y < source.height; y++) {
for (int x = 0; x < source.width; x++) {
int pixel = source.pixels[p++];
// needs to be ABGR stored in memory ARGB
// so R and B must be swapped, A and G just brought back in
tpixels[t++] =
((pixel & 0xFF) << 16) |
((pixel & 0xFF0000) >> 16) |
(pixel & 0xFF00FF00);
}
t += twidth - source.width;
}
break;
}
}
}
}
//////////////////////////////////////////////////////////////
public float textAscent() {
if ((textMode != SHAPE) || (textFontNative == null)) {
return super.textAscent();
}
return textFontNativeMetrics.getAscent();
}
public float textDescent() {
if ((textMode != SHAPE) || (textFontNative == null)) {
return super.textDescent();
}
return textFontNativeMetrics.getDescent();
}
/**
* Same as parent, but override for native version of the font.
* <p/>
* Also gets called by textFont, so the metrics
* will get recorded properly.
*/
public void textSize(float size) {
// can't cancel on textMode(SHAPE) because textMode() must happen
// after textFont() and textFont() calls textSize()
//if ((textMode != SHAPE) || (textFontNative == null)) {
// call this anyway to set the base variables for cases
// where textMode(SHAPE) will not be used
super.textSize(size);
// derive the font just in case the user is gonna call
// textMode(SHAPE) afterwards
if (textFontNative != null) {
textFontNative = textFontNative.deriveFont(size);
Graphics2D graphics = (Graphics2D) canvas.getGraphics();
graphics.setFont(textFontNative);
// get the metrics info
textFontNativeMetrics = graphics.getFontMetrics(textFontNative);
}
}
protected float textWidthImpl(char buffer[], int start, int stop) {
if ((textMode != SHAPE) || (textFontNative == null)) {
return super.textWidthImpl(buffer, start, stop);
}
// maybe should use one of the newer/fancier functions for this?
int length = stop - start;
return textFontNativeMetrics.charsWidth(buffer, start, length);
}
/**
* Override to handle rendering characters with textMode(SHAPE).
* This uses the tesselation functions from GLU to handle triangulation
* to convert the character into a series of shapes.
* <p/>
* <EM>No attempt has been made to optimize this code</EM>
* <p/>
* TODO: Should instead override textPlacedImpl() because createGlyphVector
* takes a char array. Or better yet, cache the font on a per-char basis,
* so that it's not being re-tessellated each time, could make it into
* a display list which would be nice and speedy.
* <p/>
* Also a problem where some fonts seem to be a bit slight, as if the
* control points aren't being mapped quite correctly. Probably doing
* something dumb that the control points don't map to P5's control
* points. Perhaps it's returning b-spline data from the TrueType font?
* Though it seems like that would make a lot of garbage rather than
* just a little flattening.
* <p/>
* There also seems to be a bug that is causing a line (but not a filled
* triangle) back to the origin on some letters (i.e. a capital L when
* tested with Akzidenz Grotesk Light). But this won't be visible
* with the stroke shut off, so tabling that bug for now.
*/
protected void textCharImpl(char ch, float x, float y) {
if ((textMode == SHAPE) && (textFontNative == null)) {
throw new RuntimeException("textMode(SHAPE) is disabled " +
"because the font \"" + textFont.name +
"\" is not available.");
}
if ((textMode != SHAPE) || (textFontNative == null)) {
super.textCharImpl(ch, x, y);
return;
}
// save the current stroke because it needs to be disabled
// while the text is being drawn
boolean strokeSaved = stroke;
stroke = false;
// six element array received from the Java2D path iterator
float textPoints[] = new float[6];
// array passed to createGylphVector
char textArray[] = new char[] { ch };
Graphics2D graphics = (Graphics2D) canvas.getGraphics();
FontRenderContext frc = graphics.getFontRenderContext();
GlyphVector gv = textFontNative.createGlyphVector(frc, textArray);
Shape shp = gv.getOutline();
PathIterator iter = shp.getPathIterator(null, 0.05);
glu.gluTessBeginPolygon(tobj, null);
// second param to gluTessVertex is for a user defined object that contains
// additional info about this point, but that's not needed for anything
float lastX = 0;
float lastY = 0;
// unfortunately the tesselator won't work properly unless a
// new array of doubles is allocated for each point. that bites ass,
// but also just reaffirms that in order to make things fast,
// display lists will be the way to go.
double vertex[];
while (!iter.isDone()) {
int type = iter.currentSegment(textPoints);
switch (type) {
case PathIterator.SEG_MOVETO: // 1 point (2 vars) in textPoints
case PathIterator.SEG_LINETO: // 1 point
if (type == PathIterator.SEG_MOVETO) {
//System.out.println("moveto\t" +
// textPoints[0] + "\t" + textPoints[1]);
glu.gluTessBeginContour(tobj);
} else {
//System.out.println("lineto\t" +
// textPoints[0] + "\t" + textPoints[1]);
}
vertex = new double[] {
x + textPoints[0], y + textPoints[1], 0
};
glu.gluTessVertex(tobj, vertex, vertex);
lastX = textPoints[0];
lastY = textPoints[1];
break;
case PathIterator.SEG_QUADTO: // 2 points
//System.out.println("quadto\t" +
// textPoints[0] + "\t" + textPoints[1] + "\t" +
// textPoints[2] + "\t" + textPoints[3]);
for (int i = 1; i < bezierDetail; i++) {
float t = (float)i / (float)bezierDetail;
vertex = new double[] {
x + bezierPoint(lastX, textPoints[0],
textPoints[2], textPoints[2], t),
y + bezierPoint(lastY, textPoints[1],
textPoints[3], textPoints[3], t), 0
};
glu.gluTessVertex(tobj, vertex, vertex);
}
/*
vertex = new double[] {
x + textPoints[2], y + textPoints[3], 0
};
glu.gluTessVertex(tobj, vertex, vertex);
*/
lastX = textPoints[2];
lastY = textPoints[3];
break;
case PathIterator.SEG_CUBICTO: // 3 points
//System.out.println("cubicto\t" +
// textPoints[0] + "\t" + textPoints[1] + "\t" +
// textPoints[2] + "\t" + textPoints[3] + "\t" +
// textPoints[4] + "\t" + textPoints[5]);
for (int i = 1; i < bezierDetail; i++) {
float t = (float)i / (float)bezierDetail;
vertex = new double[] {
x + bezierPoint(lastX, textPoints[0],
textPoints[2], textPoints[4], t),
y + bezierPoint(lastY, textPoints[1],
textPoints[3], textPoints[5], t), 0
};
glu.gluTessVertex(tobj, vertex, vertex);
}
/*
vertex = new double[] {
x + textPoints[4], y + textPoints[5], 0
};
glu.gluTessVertex(tobj, vertex, vertex);
*/
lastX = textPoints[4];
lastY = textPoints[5];
break;
case PathIterator.SEG_CLOSE:
//System.out.println("close");
//System.out.println();
glu.gluTessEndContour(tobj);
break;
}
iter.next();
}
glu.gluTessEndPolygon(tobj);
// re-enable stroke if it was in use before
stroke = strokeSaved;
}
public void textMode(int mode) {
if (mode == SHAPE) {
textMode = SHAPE;
} else {
// if not SHAPE mode, then pass off to the PGraphics.textMode()
// which is built for error handling (but objects to SHAPE).
super.textMode(mode);
}
}
/**
* There must be a better way to do this, but I'm having a brain fart
* with all the inner class crap. Fix it later once this stuff is debugged.
* <p/>
* The method "void vertex(float $1, float $2, float $3);" contained in
* the enclosing type "processing.core.PGraphics3" is a perfect match for
* this method call. However, it is not visible in this nested class because
* a method with the same name in an intervening class is hiding it.
*/
public void vertexRedirect(float x, float y, float z) {
vertex(x, y, z);
}
//public static class TessCallback extends GLUtesselatorCallbackAdapter {
public class TessCallback extends GLUtesselatorCallbackAdapter {
//GL gl;
//GLU glu;
// grabs the gl and glu variables because it's a static class
//public TessCallback(GL gl, GLU glu) {
//this.gl = gl;
//this.glu = glu;
//}
// *** need to shut off the stroke here
public void begin(int type) {
// one of GL_TRIANGLE_FAN, GL_TRIANGLE_STRIP,
// GL_TRIANGLES, or GL_LINE_LOOP
//gl.glBegin(type);
switch (type) {
case GL.GL_TRIANGLE_FAN: beginShape(TRIANGLE_FAN); break;
case GL.GL_TRIANGLE_STRIP: beginShape(TRIANGLE_STRIP); break;
case GL.GL_TRIANGLES: beginShape(TRIANGLES); break;
case GL.GL_LINE_LOOP: beginShape(LINE_LOOP); break;
}
//System.out.println("shape type is " + shape);
}
public void end() {
//gl.glEnd();
endShape();
}
public void vertex(Object data) {
if (data instanceof double[]) {
double[] d = (double[]) data;
if (d.length != 3) {
throw new RuntimeException("TessCallback vertex() data " +
"isn't length 3");
}
//System.out.println("tess callback vertex " +
// d[0] + " " + d[1] + " " + d[2]);
vertexRedirect((float) d[0], (float) d[1], (float) d[2]);
/*
if (d.length == 6) {
double[] d2 = {d[0], d[1], d[2]};
gl.glVertex3dv(d2);
d2 = new double[]{d[3], d[4], d[5]};
gl.glColor3dv(d2);
} else if (d.length == 3) {
gl.glVertex3dv(d);
}
*/
} else {
throw new RuntimeException("TessCallback vertex() data not understood");
}
}
public void error(int errnum) {
String estring = glu.gluErrorString(errnum);
//System.out.println("Tessellation Error: " + estring);
//throw new RuntimeException();
throw new RuntimeException("Tessellation Error: " + estring);
}
/**
* Implementation of the GLU_TESS_COMBINE callback.
* @param coords is the 3-vector of the new vertex
* @data is the vertex data to be combined, up to four elements.
* This is useful when mixing colors together or any other
* user data that was passed in to gluTessVertex.
* @weight is an array of weights, one for each element of "data"
* that should be linearly combined for new values.
* @outData is the set of new values of "data" after being
* put back together based on the weights. it's passed back as a
* single element Object[] array because that's the closest
* that Java gets to a pointer.
*/
public void combine(double[] coords, Object[] data,
float[] weight, Object[] outData) {
//System.out.println("coords.length = " + coords.length);
//System.out.println("data.length = " + data.length);
//System.out.println("weight.length = " + weight.length);
//for (int i = 0; i < data.length; i++) {
//System.out.println(i + " " + data[i].getClass().getName() + " " + weight[i]);
//}
double[] vertex = new double[coords.length];
vertex[0] = coords[0];
vertex[1] = coords[1];
vertex[2] = coords[2];
//System.out.println("combine " +
// vertex[0] + " " + vertex[1] + " " + vertex[2]);
// this is just 3, so nothing interesting to bother combining
//System.out.println("data length " + ((double[]) data[0]).length);
// not gonna bother doing any combining,
// since no user data is being passed in.
/*
for (int i = 3; i < 6; i++) {
vertex[i] =
weight[0] * ((double[]) data[0])[i] +
weight[1] * ((double[]) data[1])[i] +
weight[2] * ((double[]) data[2])[i] +
weight[3] * ((double[]) data[3])[i];
}
*/
outData[0] = vertex;
}
}
//////////////////////////////////////////////////////////////
//public void cameraMode(int mode) {
//super.cameraMode(mode);
//syncMatrices();
//}
/*
public void endCamera() {
//System.out.println("PGraphicsGL.endCamera() 1");
super.endCamera();
System.out.println("begin endCamera");
//System.out.println("PGraphicsGL.endCamera() " + width + " " + height);
//System.exit(0);
//System.out.println("into camera error " + PApplet.hex(gl.glGetError()));
gl.glMatrixMode(GL.GL_PROJECTION);
//gl.glLoadIdentity();
//System.out.println("camera should be");
//printCamera();
// opengl matrices are rotated from processing's
gl.glLoadMatrixf(new float[] { projection.m00, projection.m10, projection.m20, projection.m30,
projection.m01, projection.m11, projection.m21, projection.m31,
projection.m02, projection.m12, projection.m22, projection.m32,
projection.m03, projection.m13, projection.m23, projection.m33 } );
//gl.glScalef(1, -1, 1);
//System.out.println("trying " + height);
// this needs to be done since the model matrix will be
// goofy since it's mid-frame and the translate/scale will be wrong
gl.glMatrixMode(GL.GL_MODELVIEW);
gl.glLoadIdentity();
// gl coordinates are reversed
gl.glTranslatef(0, height, 0);
gl.glScalef(1, -1, 1);
report("out of endCamera");
}
*/
//////////////////////////////////////////////////////////////
// We're not actually turning on GL lights right now
// because our home-grown ones work better for now.
public void lights() {
super.lights();
//gl.glEnable(GL.GL_LIGHTING);
}
//public void noLights() {
//super.noLights();
//gl.glDisable(GL.GL_LIGHTING);
//}
public void ambientLight(float r, float g, float b) {
super.ambientLight(r, g, b);
glLightEnable(lightCount - 1);
glLightAmbient(lightCount - 1);
glLightPosition(lightCount - 1);
glLightFalloff(lightCount - 1);
//return num;
}
public void ambientLight(float r, float g, float b,
float x, float y, float z) {
super.ambientLight(r, g, b, x, y, z);
glLightEnable(lightCount - 1);
glLightAmbient(lightCount - 1);
glLightPosition(lightCount - 1);
glLightFalloff(lightCount - 1);
//return num;
}
public void directionalLight(float r, float g, float b,
float nx, float ny, float nz) {
super.directionalLight(r, g, b, nx, ny, nz);
//int num = super.internalCreateDirectionalLight(lr, lg, lb, nx, ny, nz);
glLightEnable(lightCount - 1);
glLightNoAmbient(lightCount - 1);
glLightDirection(lightCount - 1);
glLightDiffuse(lightCount - 1);
glLightSpecular(lightCount - 1);
glLightFalloff(lightCount - 1);
//return num;
}
public void pointLight(float r, float g, float b,
float x, float y, float z) {
super.pointLight(r, g, b, x, y, z);
//int num = super.internalCreatePointLight(lr, lg, lb, x, y, z);
glLightEnable(lightCount - 1);
glLightNoAmbient(lightCount - 1);
glLightPosition(lightCount - 1);
glLightDiffuse(lightCount - 1);
glLightSpecular(lightCount - 1);
glLightFalloff(lightCount - 1);
//return num;
}
public void spotLight(float r, float g, float b,
float x, float y, float z,
float nx, float ny, float nz,
float angle, float concentration) {
super.spotLight(r, g, b, x, y, z, nx, ny, nz, angle, concentration);
//int num = super.internalCreateSpotLight(lr, lg, lb, x, y, z, nx, ny, nz, angle);
glLightNoAmbient(lightCount - 1);
glLightPosition(lightCount - 1);
glLightDirection(lightCount - 1);
glLightDiffuse(lightCount - 1);
glLightSpecular(lightCount - 1);
glLightFalloff(lightCount - 1);
glLightSpotAngle(lightCount - 1);
glLightSpotConcentration(lightCount - 1);
//return num;
}
//public void lightDisable(int num) {
//super.lightDisable(num);
//gl.glDisable(GL.GL_LIGHT0 + num);
//}
public void lightFalloff(float constant, float linear, float quadratic) {
super.lightFalloff(constant, linear, quadratic);
glLightFalloff(lightCount);
}
public void lightSpecular(float x, float y, float z) {
super.lightSpecular(x, y, z);
glLightSpecular(lightCount);
}
//////////////////////////////////////////////////////////////
// internal helper functions to update position and direction
// (eventually remove the 'num' param here)
protected void lightPosition(int num, float x, float y, float z) {
super.lightPosition(num, x, y, z);
glLightPosition(num);
}
protected void lightDirection(int num, float x, float y, float z) {
super.lightDirection(num, x, y, z);
glLightDirection(num);
}
//////////////////////////////////////////////////////////////
// internal functions to update gl state for lighting variables
// (eventually remove the 'num' param here)
protected void glLightAmbient(int num) {
gl.glLightfv(GL.GL_LIGHT0 + num,
GL.GL_AMBIENT, new float[] { lightsDiffuseR[num],
lightsDiffuseG[num],
lightsDiffuseB[num] });
}
protected void glLightNoAmbient(int num) {
gl.glLightfv(GL.GL_LIGHT0 + num,
GL.GL_AMBIENT, new float[] { 0, 0, 0 });
}
protected void glLightDiffuse(int num) {
gl.glLightfv(GL.GL_LIGHT0 + num,
GL.GL_DIFFUSE, new float[] { lightsDiffuseR[num],
lightsDiffuseG[num],
lightsDiffuseB[num] });
}
protected void glLightDirection(int num) {
if (lights[num] == DIRECTIONAL) {
gl.glLightfv(GL.GL_LIGHT0 + num,
GL.GL_POSITION, new float[] { lightsNX[num],
lightsNY[num],
lightsNZ[num], 1 });
} else { // spotlight
gl.glLightfv(GL.GL_LIGHT0 + num,
GL.GL_SPOT_DIRECTION,
new float[] { lightsNX[num],
lightsNY[num],
lightsNZ[num] });
}
}
protected void glLightEnable(int num) {
gl.glEnable(GL.GL_LIGHT0 + num);
}
protected void glLightFalloff(int num) {
gl.glLightf(GL.GL_LIGHT0 + num,
GL.GL_CONSTANT_ATTENUATION, lightsFalloffConstant[num]);
gl.glLightf(GL.GL_LIGHT0 + num,
GL.GL_LINEAR_ATTENUATION, lightsFalloffLinear[num]);
gl.glLightf(GL.GL_LIGHT0 + num,
GL.GL_QUADRATIC_ATTENUATION, lightsFalloffQuadratic[num]);
}
protected void glLightPosition(int num) {
gl.glLightfv(GL.GL_LIGHT0 + num,
GL.GL_POSITION,
new float[] { lightsX[num], lightsY[num], lightsZ[num] });
}
protected void glLightSpecular(int num) {
gl.glLightfv(GL.GL_LIGHT0 + num,
GL.GL_SPECULAR, new float[] { lightsSpecularR[num],
lightsSpecularG[num],
lightsSpecularB[num] });
}
public void glLightSpotAngle(int num) {
gl.glLightf(GL.GL_LIGHT0 + num,
GL.GL_SPOT_CUTOFF, lightsSpotAngle[num]);
}
public void glLightSpotConcentration(int num) {
gl.glLightf(GL.GL_LIGHT0 + num,
GL.GL_SPOT_EXPONENT, lightsSpotConcentration[num]);
}
//////////////////////////////////////////////////////////////
public void strokeJoin(int join) {
String msg = "strokeJoin() not available with OPENGL";
throw new RuntimeException(msg);
}
public void strokeCap(int cap) {
String msg = "strokeCap() not available with OPENGL";
throw new RuntimeException(msg);
}
//////////////////////////////////////////////////////////////
protected void fillFromCalc() {
super.fillFromCalc();
gl.glMaterialfv(GL.GL_FRONT_AND_BACK, GL.GL_AMBIENT_AND_DIFFUSE,
new float[] { calcR, calcG, calcB, calcA });
}
//////////////////////////////////////////////////////////////
public void ambient(int rgb) {
super.ambient(rgb);
gl.glMaterialfv(GL.GL_FRONT_AND_BACK, GL.GL_AMBIENT,
new float[] { calcR, calcG, calcB, calcA });
}
public void ambient(float gray) {
super.ambient(gray);
gl.glMaterialfv(GL.GL_FRONT_AND_BACK, GL.GL_AMBIENT,
new float[] { calcR, calcG, calcB, calcA });
}
public void ambient(float x, float y, float z) {
super.ambient(x, y, z);
gl.glMaterialfv(GL.GL_FRONT_AND_BACK, GL.GL_AMBIENT,
new float[] { calcR, calcG, calcB, calcA });
}
//////////////////////////////////////////////////////////////
public void specular(int rgb) {
super.specular(rgb);
gl.glMaterialfv(GL.GL_FRONT_AND_BACK, GL.GL_SPECULAR,
new float[] { calcR, calcG, calcB, calcA });
}
public void specular(float gray) {
super.specular(gray);
gl.glMaterialfv(GL.GL_FRONT_AND_BACK, GL.GL_SPECULAR,
new float[] { calcR, calcG, calcB, calcA });
}
public void specular(float gray, float alpha) {
super.specular(gray, alpha);
gl.glMaterialfv(GL.GL_FRONT_AND_BACK, GL.GL_SPECULAR,
new float[] { calcR, calcG, calcB, calcA });
}
public void specular(float x, float y, float z) {
super.specular(x, y, z);
gl.glMaterialfv(GL.GL_FRONT_AND_BACK, GL.GL_SPECULAR,
new float[] { calcR, calcG, calcB, calcA });
}
public void specular(float x, float y, float z, float a) {
super.specular(x, y, z, a);
gl.glMaterialfv(GL.GL_FRONT_AND_BACK, GL.GL_SPECULAR,
new float[] { calcR, calcG, calcB, calcA });
}
//////////////////////////////////////////////////////////////
public void emissive(int rgb) {
super.emissive(rgb);
gl.glMaterialfv(GL.GL_FRONT_AND_BACK, GL.GL_EMISSION,
new float[] { calcR, calcG, calcB, calcA });
}
public void emissive(float gray) {
super.emissive(gray);
gl.glMaterialfv(GL.GL_FRONT_AND_BACK, GL.GL_EMISSION,
new float[] { calcR, calcG, calcB, calcA });
}
public void emissive(float x, float y, float z) {
super.emissive(x, y, z);
gl.glMaterialfv(GL.GL_FRONT_AND_BACK, GL.GL_EMISSION,
new float[] { calcR, calcG, calcB, calcA });
}
//////////////////////////////////////////////////////////////
public void shininess(float shine) {
super.shininess(shine);
gl.glMaterialf(GL.GL_FRONT_AND_BACK, GL.GL_SHININESS, shine);
}
//////////////////////////////////////////////////////////////
public void background(PImage image) {
clear();
set(0, 0, image);
}
public void clear() {
float backgroundR = (float) ((backgroundColor >> 16) & 0xff) / 255.0f;
float backgroundG = (float) ((backgroundColor >> 8) & 0xff) / 255.0f;
float backgroundB = (float) (backgroundColor & 0xff) / 255.0f;
gl.glClearColor(backgroundR, backgroundG, backgroundB, 1);
gl.glClear(GL.GL_COLOR_BUFFER_BIT | GL.GL_DEPTH_BUFFER_BIT);
}
//////////////////////////////////////////////////////////////
public void smooth() {
gl.glEnable(GL.GL_POINT_SMOOTH);
gl.glEnable(GL.GL_LINE_SMOOTH);
gl.glEnable(GL.GL_POLYGON_SMOOTH);
smooth = true;
}
public void noSmooth() {
gl.glDisable(GL.GL_POINT_SMOOTH);
gl.glDisable(GL.GL_LINE_SMOOTH);
gl.glDisable(GL.GL_POLYGON_SMOOTH);
smooth = false;
}
//////////////////////////////////////////////////////////////
public void loadPixels() {
//throw new RuntimeException("loadPixels() not yet implemented for OpenGL");
if ((pixels == null) || (pixels.length != width*height)) {
pixels = new int[width * height];
}
/*
for (int y = 0; y < height; y++) {
// or SKIP_PIXELS with y*width
//gl.glPixelStorei(GL.GL_PACK_SKIP_ROWS, (height-1) - y);
gl.glReadPixels(0, y, width, y + 1,
GL.GL_RGBA, GL.GL_UNSIGNED_BYTE, pixels);
}
gl.glPixelStorei(GL.GL_PACK_SKIP_ROWS, 0);
*/
gl.glReadPixels(0, 0, width, height,
GL.GL_RGBA, GL.GL_UNSIGNED_BYTE, pixels);
/*
int temp[] = new int[width];
// 3 rows, skips the middle
for (int y = 0; y < height/2; y++) {
int yy = (height - 1) - y;
System.arraycopy(pixels, y*width, temp, 0, width);
System.arraycopy(pixels, yy*width, pixels, y*width, width);
System.arraycopy(temp, 0, pixels, yy*width, width);
}
*/
/*
// now need to swap the RGBA components to ARGB (big endian)
for (int i = 0; i < pixels.length; i++) {
//pixels[i] = ((pixels[i] & 0xff) << 24) |
pixels[i] = ((pixels[i] << 24) & 0xff) | // safer?
((pixels[i] >> 8) & 0xffffff);
}
*/
// flip vertically (opengl stores images upside down),
// and swap RGBA components to ARGB (big endian)
int index = 0;
int yindex = (height - 1) * width;
for (int y = 0; y < height/2; y++) {
if (BIG_ENDIAN) {
for (int x = 0; x < width; x++) {
int temp = pixels[index];
// ignores alpha component, just sets it opaque
pixels[index] = 0xff000000 | ((pixels[yindex] >> 8) & 0x00ffffff);
pixels[yindex] = 0xff000000 | ((temp >> 8) & 0x00ffffff);
index++;
yindex++;
}
} else { // LITTLE_ENDIAN, convert ABGR to ARGB
for (int x = 0; x < width; x++) {
int temp = pixels[index];
// identical to updatePixels because only two
// components are being swapped
pixels[index] = 0xff000000 |
((pixels[yindex] << 16) & 0xff0000) |
(pixels[yindex] & 0xff00) |
((pixels[yindex] >> 16) & 0xff);
pixels[yindex] = 0xff000000 |
((temp << 16) & 0xff0000) |
(temp & 0xff00) |
((temp >> 16) & 0xff);
index++;
yindex++;
}
}
yindex -= width*2;
}
}
/**
* Convert native OpenGL format into palatable ARGB format.
* This function leaves alone (ignores) the alpha component.
* Also flips the image vertically, since images are upside-down in GL.
*/
static void nativeToJavaRGB(PImage image) {
int index = 0;
int yindex = (image.height - 1) * image.width;
for (int y = 0; y < image.height/2; y++) {
if (BIG_ENDIAN) {
for (int x = 0; x < image.width; x++) {
int temp = image.pixels[index];
// ignores alpha component, just sets it opaque
image.pixels[index] =
0xff000000 | ((image.pixels[yindex] >> 8) & 0x00ffffff);
image.pixels[yindex] =
0xff000000 | ((temp >> 8) & 0x00ffffff);
index++;
yindex++;
}
} else { // LITTLE_ENDIAN, convert ABGR to ARGB
for (int x = 0; x < image.width; x++) {
int temp = image.pixels[index];
// identical to updatePixels because only two
// components are being swapped
image.pixels[index] = 0xff000000 |
((image.pixels[yindex] << 16) & 0xff0000) |
(image.pixels[yindex] & 0xff00) |
((image.pixels[yindex] >> 16) & 0xff);
image.pixels[yindex] = 0xff000000 |
((temp << 16) & 0xff0000) |
(temp & 0xff00) |
((temp >> 16) & 0xff);
index++;
yindex++;
}
}
yindex -= image.width*2;
}
}
/**
* Convert native OpenGL format into palatable ARGB format.
* This function leaves alone (ignores) the alpha component.
* Also flips the image vertically, since images are upside-down in GL.
*/
static void nativeToJavaARGB(PImage image) {
int index = 0;
int yindex = (image.height - 1) * image.width;
for (int y = 0; y < image.height/2; y++) {
if (BIG_ENDIAN) {
for (int x = 0; x < image.width; x++) {
int temp = image.pixels[index];
// ignores alpha component, just sets it opaque
image.pixels[index] =
(image.pixels[yindex] & 0xff000000) |
((image.pixels[yindex] >> 8) & 0x00ffffff);
image.pixels[yindex] =
(temp & 0xff000000) |
((temp >> 8) & 0x00ffffff);
index++;
yindex++;
}
} else { // LITTLE_ENDIAN, convert ABGR to ARGB
for (int x = 0; x < image.width; x++) {
int temp = image.pixels[index];
// identical to updatePixels because only two
// components are being swapped
image.pixels[index] =
(image.pixels[yindex] & 0xff000000) |
((image.pixels[yindex] << 16) & 0xff0000) |
(image.pixels[yindex] & 0xff00) |
((image.pixels[yindex] >> 16) & 0xff);
image.pixels[yindex] =
(temp & 0xff000000) |
((temp << 16) & 0xff0000) |
(temp & 0xff00) |
((temp >> 16) & 0xff);
index++;
yindex++;
}
}
yindex -= image.width*2;
}
}
/**
* Convert ARGB (Java/Processing) data to native OpenGL format.
* This function leaves alone (ignores) the alpha component.
* Also flips the image vertically, since images are upside-down in GL.
*/
static void javaToNativeRGB(PImage image) {
int width = image.width;
int height = image.height;
int pixels[] = image.pixels;
int index = 0;
int yindex = (height - 1) * width;
for (int y = 0; y < height/2; y++) {
if (BIG_ENDIAN) {
// and convert ARGB back to opengl RGBA components (big endian)
for (int x = 0; x < image.width; x++) {
int temp = pixels[index];
/*
pixels[index] =
((pixels[yindex] >> 24) & 0xff) |
((pixels[yindex] << 8) & 0xffffff00);
pixels[yindex] =
((temp >> 24) & 0xff) |
((temp << 8) & 0xffffff00);
*/
pixels[index] = ((pixels[yindex] << 8) & 0xffffff00) | 0xff;
pixels[yindex] = ((temp << 8) & 0xffffff00) | 0xff;
index++;
yindex++;
}
} else {
// convert ARGB back to native little endian ABGR
for (int x = 0; x < width; x++) {
int temp = pixels[index];
pixels[index] = 0xff000000 |
((pixels[yindex] << 16) & 0xff0000) |
(pixels[yindex] & 0xff00) |
((pixels[yindex] >> 16) & 0xff);
pixels[yindex] = 0xff000000 |
((temp << 16) & 0xff0000) |
(temp & 0xff00) |
((temp >> 16) & 0xff);
index++;
yindex++;
}
}
yindex -= width*2;
}
}
/**
* Convert Java ARGB to native OpenGL format.
* Also flips the image vertically, since images are upside-down in GL.
*/
static void javaToNativeARGB(PImage image) {
int width = image.width;
int height = image.height;
int pixels[] = image.pixels;
int index = 0;
int yindex = (height - 1) * width;
for (int y = 0; y < height/2; y++) {
if (BIG_ENDIAN) {
// and convert ARGB back to opengl RGBA components (big endian)
for (int x = 0; x < image.width; x++) {
int temp = pixels[index];
pixels[index] =
((pixels[yindex] >> 24) & 0xff) |
((pixels[yindex] << 8) & 0xffffff00);
pixels[yindex] =
((temp >> 24) & 0xff) |
((temp << 8) & 0xffffff00);
index++;
yindex++;
}
} else {
// convert ARGB back to native little endian ABGR
for (int x = 0; x < width; x++) {
int temp = pixels[index];
pixels[index] =
(pixels[yindex] & 0xff000000) |
((pixels[yindex] << 16) & 0xff0000) |
(pixels[yindex] & 0xff00) |
((pixels[yindex] >> 16) & 0xff);
pixels[yindex] =
(pixels[yindex] & 0xff000000) |
((temp << 16) & 0xff0000) |
(temp & 0xff00) |
((temp >> 16) & 0xff);
index++;
yindex++;
}
}
yindex -= width*2;
}
}
public void updatePixels() {
// flip vertically (opengl stores images upside down),
int index = 0;
int yindex = (height - 1) * width;
for (int y = 0; y < height/2; y++) {
if (BIG_ENDIAN) {
// and convert ARGB back to opengl RGBA components (big endian)
for (int x = 0; x < width; x++) {
int temp = pixels[index];
/*
pixels[index] =
((pixels[yindex] >> 24) & 0xff) |
((pixels[yindex] << 8) & 0xffffff00);
pixels[yindex] =
((temp >> 24) & 0xff) |
((temp << 8) & 0xffffff00);
*/
pixels[index] = ((pixels[yindex] << 8) & 0xffffff00) | 0xff;
pixels[yindex] = ((temp << 8) & 0xffffff00) | 0xff;
index++;
yindex++;
}
} else {
// convert ARGB back to native little endian ABGR
for (int x = 0; x < width; x++) {
int temp = pixels[index];
pixels[index] = 0xff000000 |
((pixels[yindex] << 16) & 0xff0000) |
(pixels[yindex] & 0xff00) |
((pixels[yindex] >> 16) & 0xff);
pixels[yindex] = 0xff000000 |
((temp << 16) & 0xff0000) |
(temp & 0xff00) |
((temp >> 16) & 0xff);
index++;
yindex++;
}
}
yindex -= width*2;
}
// re-pack ARGB data into RGBA for opengl (big endian)
/*
for (int i = 0; i < pixels.length; i++) {
pixels[i] = ((pixels[i] >> 24) & 0xff) |
((pixels[i] << 8) & 0xffffff00);
}
*/
//System.out.println("running glDrawPixels");
//gl.glRasterPos2i(width/2, height/2);
//gl.glRasterPos2i(width/2, 1); //height/3);
//gl.glRasterPos2i(1, height - 1); //1, 1);
// for some reason, glRasterPos(0, height) won't draw anything.
// my guess is that it's getting "clipped", so adding an epsilon
// makes it work. also, height-1 would be the logical start,
// but apparently that's not how opengl coordinates work
gl.glRasterPos2f(0.0001f, height - 0.0001f);
gl.glDrawPixels(width, height, GL.GL_RGBA, GL.GL_UNSIGNED_BYTE, pixels);
}
public void updatePixels(int x, int y, int c, int d) {
//throw new RuntimeException("updatePixels() not available with OpenGL");
// TODO make this actually work for a smaller region
// problem is, it gets pretty messy with the y reflection, etc
updatePixels();
}
//////////////////////////////////////////////////////////////
int getset[] = new int[1];
public int get(int x, int y) {
gl.glReadPixels(x, y, 1, 1, GL.GL_RGBA, GL.GL_UNSIGNED_BYTE, getset);
if (BIG_ENDIAN) {
return 0xff000000 | ((getset[0] >> 8) & 0x00ffffff);
} else {
return 0xff000000 |
((getset[0] << 16) & 0xff0000) |
(getset[0] & 0xff00) |
((getset[0] >> 16) & 0xff);
}
}
public PImage get(int x, int y, int w, int h) {
if (imageMode == CORNERS) { // if CORNER, do nothing
w = (w - x);
h = (h - x);
}
if (x < 0) {
w += x; // clip off the left edge
x = 0;
}
if (y < 0) {
h += y; // clip off some of the height
y = 0;
}
if (x + w > width) w = width - x;
if (y + h > height) h = height - y;
PImage newbie = new PImage(w, h); //new int[w*h], w, h, ARGB);
gl.glReadPixels(x, y, w, h, GL.GL_RGBA, GL.GL_UNSIGNED_BYTE,
newbie.pixels);
nativeToJavaARGB(newbie);
return newbie;
}
public PImage get() {
return get(0, 0, width, height);
}
public void set(int x, int y, int argb) {
if (BIG_ENDIAN) {
// convert ARGB to RGBA
getset[0] = (argb << 8) | 0xff;
} else {
// convert ARGB to ABGR
getset[0] =
(argb & 0xff00ff00) |
((argb << 16) & 0xff0000) |
((argb >> 16) & 0xff);
}
gl.glRasterPos2f(x + EPSILON, y + EPSILON);
gl.glDrawPixels(1, 1, GL.GL_RGBA, GL.GL_UNSIGNED_BYTE, getset);
}
/**
* Set an image directly to the screen.
* <P>
* TODO not optimized properly, creates a temporary buffer the
* size of the image. Needs to instead use image cache, but that
* requires two types of image cache. One for power of 2 textures
* and another for glReadPixels/glDrawPixels data that's flipped
* vertically. Both have their components all swapped to native.
*/
public void set(int x, int y, PImage source) {
/*
ImageCache cash = (ImageCache) source.cache;
if (cash == null) {
// this will flip the bits and make it a power of 2
cache(source);
cash = (ImageCache) source.cache;
}
// now draw to the screen but set the scanline length
*/
int backup[] = new int[source.pixels.length];
System.arraycopy(source.pixels, 0, backup, 0, source.pixels.length);
javaToNativeARGB(source);
gl.glRasterPos2f(x + EPSILON, (height - y) - EPSILON);
gl.glDrawPixels(source.width, source.height,
GL.GL_RGBA, GL.GL_UNSIGNED_BYTE, source.pixels);
//nativeToJavaARGB(source);
source.pixels = backup;
}
//////////////////////////////////////////////////////////////
/**
* This is really inefficient and not a good idea in OpenGL.
* Use get() and set() with a smaller image area, or call the
* filter on an image instead, and then draw that.
*/
public void filter(int kind) {
PImage temp = get();
temp.filter(kind);
set(0, 0, temp);
}
/**
* This is really inefficient and not a good idea in OpenGL.
* Use get() and set() with a smaller image area, or call the
* filter on an image instead, and then draw that.
*/
public void filter(int kind, float param) {
PImage temp = get();
temp.filter(kind, param);
set(0, 0, temp);
}
//////////////////////////////////////////////////////////////
/**
* Extremely slow and not optimized, should use glCopyPixels instead.
* Currently calls a loadPixels() on the whole canvas, then does the copy,
* then it calls updatePixels().
*/
public void copy(int sx1, int sy1, int sx2, int sy2,
int dx1, int dy1, int dx2, int dy2) {
//throw new RuntimeException("copy() not available with OpenGL");
loadPixels();
super.copy(sx1, sy1, sx2, sy2, dx1, dy1, dx2, dy2);
updatePixels();
}
/**
* TODO - extremely slow and not optimized.
* Currently calls a loadPixels() on the whole canvas,
* then does the copy, then it calls updatePixels().
*/
public void copy(PImage src,
int sx1, int sy1, int sx2, int sy2,
int dx1, int dy1, int dx2, int dy2) {
loadPixels();
super.copy(src, sx1, sy1, sx2, sy2, dx1, dy1, dx2, dy2);
updatePixels();
}
//////////////////////////////////////////////////////////////
public void blend(int sx, int sy, int dx, int dy, int mode) {
set(dx, dy, PImage.blend(get(sx, sy), get(dx, dy), mode));
}
public void blend(PImage src,
int sx, int sy, int dx, int dy, int mode) {
set(dx, dy, PImage.blend(src.get(sx, sy), get(dx, dy), mode));
}
/**
* TODO - extremely slow and not optimized.
* Currently calls a loadPixels() on the whole canvas,
* then does the blend, then it calls updatePixels().
*/
public void blend(int sx1, int sy1, int sx2, int sy2,
int dx1, int dy1, int dx2, int dy2, int mode) {
loadPixels();
super.blend(sx1, sy1, sx2, sy2, dx1, dy1, dx2, dy2, mode);
updatePixels();
}
/**
* TODO - extremely slow and not optimized.
* Currently calls a loadPixels() on the whole canvas,
* then does the blend, then it calls updatePixels().
*/
public void blend(PImage src,
int sx1, int sy1, int sx2, int sy2,
int dx1, int dy1, int dx2, int dy2, int mode) {
loadPixels();
super.blend(src, sx1, sy1, sx2, sy2, dx1, dy1, dx2, dy2, mode);
updatePixels();
}
//////////////////////////////////////////////////////////////
public void save(String filename) {
loadPixels();
super.save(filename);
}
//////////////////////////////////////////////////////////////
private final float min(float a, float b) {
return (a < b) ? a : b;
}
//////////////////////////////////////////////////////////////
/**
* Report on anything from glError().
* Don't use this inside glBegin/glEnd otherwise it'll
* throw an GL_INVALID_OPERATION error.
*/
public void report(String where) {
//if (true) return;
int err = gl.glGetError();
if (err == 0) {
return;
//System.out.println("no error");
} else {
System.out.print("GL_ERROR at " + where + ": ");
System.out.print(PApplet.hex(err, 4) + " ");
switch (err) {
case 0x0500: System.out.print("GL_INVALID_ENUM"); break;
case 0x0501: System.out.print("GL_INVALID_VALUE"); break;
case 0x0502: System.out.print("GL_INVALID_OPERATION"); break;
case 0x0503: System.out.print("GL_STACK_OVERFLOW"); break;
case 0x0504: System.out.print("GL_STACK_UNDERFLOW"); break;
case 0x0505: System.out.print("GL_OUT_OF_MEMORY"); break;
default: System.out.print("UNKNOWN");
}
System.out.println();
}
}
//GL will do the clipping for us
protected void add_line(int a, int b) {
add_line_no_clip(a, b);
}
// GL will do the clipping for us
protected void add_triangle(int a, int b, int c) {
add_triangle_no_clip(a, b, c);
}
}
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