diff options
Diffstat (limited to 'src/jogl/classes/com/jogamp/opengl/util')
| -rw-r--r-- | src/jogl/classes/com/jogamp/opengl/util/PMVMatrix.java | 47 | ||||
| -rw-r--r-- | src/jogl/classes/com/jogamp/opengl/util/ProjectFloat.java | 1227 |
2 files changed, 25 insertions, 1249 deletions
diff --git a/src/jogl/classes/com/jogamp/opengl/util/PMVMatrix.java b/src/jogl/classes/com/jogamp/opengl/util/PMVMatrix.java index 929eb3d28..fc6ef3ede 100644 --- a/src/jogl/classes/com/jogamp/opengl/util/PMVMatrix.java +++ b/src/jogl/classes/com/jogamp/opengl/util/PMVMatrix.java @@ -44,6 +44,9 @@ import javax.media.opengl.GL; import javax.media.opengl.GLException; import javax.media.opengl.fixedfunc.GLMatrixFunc; +import jogamp.opengl.ProjectFloat; + +import com.jogamp.opengl.FloatUtil; import com.jogamp.common.nio.Buffers; public class PMVMatrix implements GLMatrixFunc { @@ -89,22 +92,22 @@ public class PMVMatrix implements GLMatrixFunc { matrixBuffer.mark(); } - matrixIdent = ProjectFloat.slice2Float(matrixBuffer, matrixBufferArray, 0*16, 1*16); // I - matrixTex = ProjectFloat.slice2Float(matrixBuffer, matrixBufferArray, 1*16, 1*16); // T - matrixPMvMvit = ProjectFloat.slice2Float(matrixBuffer, matrixBufferArray, 2*16, 4*16); // P + Mv + Mvi + Mvit - matrixPMvMvi = ProjectFloat.slice2Float(matrixBuffer, matrixBufferArray, 2*16, 3*16); // P + Mv + Mvi - matrixPMv = ProjectFloat.slice2Float(matrixBuffer, matrixBufferArray, 2*16, 2*16); // P + Mv - matrixP = ProjectFloat.slice2Float(matrixBuffer, matrixBufferArray, 2*16, 1*16); // P - matrixMv = ProjectFloat.slice2Float(matrixBuffer, matrixBufferArray, 3*16, 1*16); // Mv - matrixMvi = ProjectFloat.slice2Float(matrixBuffer, matrixBufferArray, 4*16, 1*16); // Mvi - matrixMvit = ProjectFloat.slice2Float(matrixBuffer, matrixBufferArray, 5*16, 1*16); // Mvit + matrixIdent = Buffers.slice2Float(matrixBuffer, matrixBufferArray, 0*16, 1*16); // I + matrixTex = Buffers.slice2Float(matrixBuffer, matrixBufferArray, 1*16, 1*16); // T + matrixPMvMvit = Buffers.slice2Float(matrixBuffer, matrixBufferArray, 2*16, 4*16); // P + Mv + Mvi + Mvit + matrixPMvMvi = Buffers.slice2Float(matrixBuffer, matrixBufferArray, 2*16, 3*16); // P + Mv + Mvi + matrixPMv = Buffers.slice2Float(matrixBuffer, matrixBufferArray, 2*16, 2*16); // P + Mv + matrixP = Buffers.slice2Float(matrixBuffer, matrixBufferArray, 2*16, 1*16); // P + matrixMv = Buffers.slice2Float(matrixBuffer, matrixBufferArray, 3*16, 1*16); // Mv + matrixMvi = Buffers.slice2Float(matrixBuffer, matrixBufferArray, 4*16, 1*16); // Mvi + matrixMvit = Buffers.slice2Float(matrixBuffer, matrixBufferArray, 5*16, 1*16); // Mvit projectFloat = new ProjectFloat(matrixBuffer, matrixBufferArray, 6*16); if(null != matrixBuffer) { matrixBuffer.reset(); } - ProjectFloat.makeIdentityf(matrixIdent); + FloatUtil.makeIdentityf(matrixIdent); vec3f = new float[3]; matrixMult = new float[16]; @@ -113,11 +116,11 @@ public class PMVMatrix implements GLMatrixFunc { matrixScale = new float[16]; matrixOrtho = new float[16]; matrixFrustum = new float[16]; - ProjectFloat.makeIdentityf(matrixTrans, 0); - ProjectFloat.makeIdentityf(matrixRot, 0); - ProjectFloat.makeIdentityf(matrixScale, 0); - ProjectFloat.makeIdentityf(matrixOrtho, 0); - ProjectFloat.makeZero(matrixFrustum, 0); + FloatUtil.makeIdentityf(matrixTrans, 0); + FloatUtil.makeIdentityf(matrixRot, 0); + FloatUtil.makeIdentityf(matrixScale, 0); + FloatUtil.makeIdentityf(matrixOrtho, 0); + FloatUtil.makeZero(matrixFrustum, 0); matrixPStack = new ArrayList<float[]>(); matrixMvStack= new ArrayList<float[]>(); @@ -461,26 +464,26 @@ public class PMVMatrix implements GLMatrixFunc { public final void glMultMatrixf(final FloatBuffer m) { if(matrixMode==GL_MODELVIEW) { - ProjectFloat.multMatrixf(matrixMv, m, matrixMv); + FloatUtil.multMatrixf(matrixMv, m, matrixMv); modified |= DIRTY_MODELVIEW ; } else if(matrixMode==GL_PROJECTION) { - ProjectFloat.multMatrixf(matrixP, m, matrixP); + FloatUtil.multMatrixf(matrixP, m, matrixP); modified |= DIRTY_PROJECTION ; } else if(matrixMode==GL.GL_TEXTURE) { - ProjectFloat.multMatrixf(matrixTex, m, matrixTex); + FloatUtil.multMatrixf(matrixTex, m, matrixTex); modified |= DIRTY_TEXTURE ; } } public void glMultMatrixf(float[] m, int m_offset) { if(matrixMode==GL_MODELVIEW) { - ProjectFloat.multMatrixf(matrixMv, m, m_offset, matrixMv); + FloatUtil.multMatrixf(matrixMv, m, m_offset, matrixMv); modified |= DIRTY_MODELVIEW ; } else if(matrixMode==GL_PROJECTION) { - ProjectFloat.multMatrixf(matrixP, m, m_offset, matrixP); + FloatUtil.multMatrixf(matrixP, m, m_offset, matrixP); modified |= DIRTY_PROJECTION ; } else if(matrixMode==GL.GL_TEXTURE) { - ProjectFloat.multMatrixf(matrixTex, m, m_offset, matrixTex); + FloatUtil.multMatrixf(matrixTex, m, m_offset, matrixTex); modified |= DIRTY_TEXTURE ; } } @@ -504,7 +507,7 @@ public class PMVMatrix implements GLMatrixFunc { final float s = (float)Math.sin(angrad); vec3f[0]=x; vec3f[1]=y; vec3f[2]=z; - ProjectFloat.normalize(vec3f); + FloatUtil.normalize(vec3f); x = vec3f[0]; y = vec3f[1]; z = vec3f[2]; // Rotation matrix: diff --git a/src/jogl/classes/com/jogamp/opengl/util/ProjectFloat.java b/src/jogl/classes/com/jogamp/opengl/util/ProjectFloat.java deleted file mode 100644 index 97915502d..000000000 --- a/src/jogl/classes/com/jogamp/opengl/util/ProjectFloat.java +++ /dev/null @@ -1,1227 +0,0 @@ -/* -** License Applicability. Except to the extent portions of this file are -** made subject to an alternative license as permitted in the SGI Free -** Software License B, Version 2.0 (the "License"), the contents of this -** file are subject only to the provisions of the License. You may not use -** this file except in compliance with the License. You may obtain a copy -** of the License at Silicon Graphics, Inc., attn: Legal Services, 1600 -** Amphitheatre Parkway, Mountain View, CA 94043-1351, or at: -** -** http://oss.sgi.com/projects/FreeB -** -** Note that, as provided in the License, the Software is distributed on an -** "AS IS" basis, with ALL EXPRESS AND IMPLIED WARRANTIES AND CONDITIONS -** DISCLAIMED, INCLUDING, WITHOUT LIMITATION, ANY IMPLIED WARRANTIES AND -** CONDITIONS OF MERCHANTABILITY, SATISFACTORY QUALITY, FITNESS FOR A -** PARTICULAR PURPOSE, AND NON-INFRINGEMENT. -** -** NOTE: The Original Code (as defined below) has been licensed to Sun -** Microsystems, Inc. ("Sun") under the SGI Free Software License B -** (Version 1.1), shown above ("SGI License"). Pursuant to Section -** 3.2(3) of the SGI License, Sun is distributing the Covered Code to -** you under an alternative license ("Alternative License"). This -** Alternative License includes all of the provisions of the SGI License -** except that Section 2.2 and 11 are omitted. Any differences between -** the Alternative License and the SGI License are offered solely by Sun -** and not by SGI. -** -** Original Code. The Original Code is: OpenGL Sample Implementation, -** Version 1.2.1, released January 26, 2000, developed by Silicon Graphics, -** Inc. The Original Code is Copyright (c) 1991-2000 Silicon Graphics, Inc. -** Copyright in any portions created by third parties is as indicated -** elsewhere herein. All Rights Reserved. -** -** Additional Notice Provisions: The application programming interfaces -** established by SGI in conjunction with the Original Code are The -** OpenGL(R) Graphics System: A Specification (Version 1.2.1), released -** April 1, 1999; The OpenGL(R) Graphics System Utility Library (Version -** 1.3), released November 4, 1998; and OpenGL(R) Graphics with the X -** Window System(R) (Version 1.3), released October 19, 1998. This software -** was created using the OpenGL(R) version 1.2.1 Sample Implementation -** published by SGI, but has not been independently verified as being -** compliant with the OpenGL(R) version 1.2.1 Specification. -** -** $Date: 2009-03-13 22:20:29 -0700 (Fri, 13 Mar 2009) $ $Revision: 1867 $ -** $Header$ -*/ - -/* - * Copyright (c) 2002-2004 LWJGL Project - * All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions are - * met: - * - * * Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * - * * Redistributions in binary form must reproduce the above copyright - * notice, this list of conditions and the following disclaimer in the - * documentation and/or other materials provided with the distribution. - * - * * Neither the name of 'LWJGL' nor the names of - * its contributors may be used to endorse or promote products derived - * from this software without specific prior written permission. - * - * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS - * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED - * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR - * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR - * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, - * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, - * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR - * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF - * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING - * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS - * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. - */ - -/* - * Copyright (c) 2003 Sun Microsystems, Inc. All Rights Reserved. - * Copyright (c) 2011 JogAmp Community. All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions are - * met: - * - * - Redistribution of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * - * - Redistribution in binary form must reproduce the above copyright - * notice, this list of conditions and the following disclaimer in the - * documentation and/or other materials provided with the distribution. - * - * Neither the name of Sun Microsystems, Inc. or the names of - * contributors may be used to endorse or promote products derived from - * this software without specific prior written permission. - * - * This software is provided "AS IS," without a warranty of any kind. ALL - * EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND WARRANTIES, - * INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY, FITNESS FOR A - * PARTICULAR PURPOSE OR NON-INFRINGEMENT, ARE HEREBY EXCLUDED. SUN - * MICROSYSTEMS, INC. ("SUN") AND ITS LICENSORS SHALL NOT BE LIABLE FOR - * ANY DAMAGES SUFFERED BY LICENSEE AS A RESULT OF USING, MODIFYING OR - * DISTRIBUTING THIS SOFTWARE OR ITS DERIVATIVES. IN NO EVENT WILL SUN OR - * ITS LICENSORS BE LIABLE FOR ANY LOST REVENUE, PROFIT OR DATA, OR FOR - * DIRECT, INDIRECT, SPECIAL, CONSEQUENTIAL, INCIDENTAL OR PUNITIVE - * DAMAGES, HOWEVER CAUSED AND REGARDLESS OF THE THEORY OF LIABILITY, - * ARISING OUT OF THE USE OF OR INABILITY TO USE THIS SOFTWARE, EVEN IF - * SUN HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES. - * - * You acknowledge that this software is not designed or intended for use - * in the design, construction, operation or maintenance of any nuclear - * facility. - */ -package com.jogamp.opengl.util; - -import java.nio.Buffer; -import java.nio.ByteBuffer; -import java.nio.FloatBuffer; -import java.nio.IntBuffer; - -import javax.media.opengl.fixedfunc.GLMatrixFunc; - -import com.jogamp.common.nio.Buffers; - -/** - * ProjectFloat.java - * <p/> - * <p/> - * Created 11-jan-2004 - * - * @author Erik Duijs - * @author Kenneth Russell - * @author Sven Gothel - */ -public class ProjectFloat { - private static final float[] IDENTITY_MATRIX = - new float[] { - 1.0f, 0.0f, 0.0f, 0.0f, - 0.0f, 1.0f, 0.0f, 0.0f, - 0.0f, 0.0f, 1.0f, 0.0f, - 0.0f, 0.0f, 0.0f, 1.0f }; - - private static final float[] ZERO_MATRIX = - new float[] { - 0.0f, 0.0f, 0.0f, 0.0f, - 0.0f, 0.0f, 0.0f, 0.0f, - 0.0f, 0.0f, 0.0f, 0.0f, - 0.0f, 0.0f, 0.0f, 0.0f }; - - /** - * Make matrix an identity matrix - */ - public static void makeIdentityf(float[] m, int offset) { - for (int i = 0; i < 16; i++) { - m[i+offset] = IDENTITY_MATRIX[i]; - } - } - - /** - * Make matrix an identity matrix - */ - public static void makeIdentityf(FloatBuffer m) { - int oldPos = m.position(); - m.put(IDENTITY_MATRIX); - m.position(oldPos); - } - - /** - * Make matrix an zero matrix - */ - public static void makeZero(float[] m, int offset) { - for (int i = 0; i < 16; i++) { - m[i+offset] = 0; - } - } - - /** - * Make matrix an zero matrix - */ - public static void makeZero(FloatBuffer m) { - int oldPos = m.position(); - m.put(ZERO_MATRIX); - m.position(oldPos); - } - - /** - * @param a - * @param b - * @param d result a*b - */ - public static final void multMatrixf(final float[] a, int a_off, final float[] b, int b_off, float[] d, int d_off) { - for (int i = 0; i < 4; i++) { - final float ai0=a[a_off+i+0*4], ai1=a[a_off+i+1*4], ai2=a[a_off+i+2*4], ai3=a[a_off+i+3*4]; - d[d_off+i+0*4] = ai0 * b[b_off+0+0*4] + ai1 * b[b_off+1+0*4] + ai2 * b[b_off+2+0*4] + ai3 * b[b_off+3+0*4] ; - d[d_off+i+1*4] = ai0 * b[b_off+0+1*4] + ai1 * b[b_off+1+1*4] + ai2 * b[b_off+2+1*4] + ai3 * b[b_off+3+1*4] ; - d[d_off+i+2*4] = ai0 * b[b_off+0+2*4] + ai1 * b[b_off+1+2*4] + ai2 * b[b_off+2+2*4] + ai3 * b[b_off+3+2*4] ; - d[d_off+i+3*4] = ai0 * b[b_off+0+3*4] + ai1 * b[b_off+1+3*4] + ai2 * b[b_off+2+3*4] + ai3 * b[b_off+3+3*4] ; - } - } - - /** - * @param a - * @param b - * @param d result a*b - */ - public static final void multMatrixf(final float[] a, int a_off, final float[] b, int b_off, FloatBuffer d) { - final int dP = d.position(); - for (int i = 0; i < 4; i++) { - final float ai0=a[a_off+i+0*4], ai1=a[a_off+i+1*4], ai2=a[a_off+i+2*4], ai3=a[a_off+i+3*4]; - d.put(dP+i+0*4 , ai0 * b[b_off+0+0*4] + ai1 * b[b_off+1+0*4] + ai2 * b[b_off+2+0*4] + ai3 * b[b_off+3+0*4] ); - d.put(dP+i+1*4 , ai0 * b[b_off+0+1*4] + ai1 * b[b_off+1+1*4] + ai2 * b[b_off+2+1*4] + ai3 * b[b_off+3+1*4] ); - d.put(dP+i+2*4 , ai0 * b[b_off+0+2*4] + ai1 * b[b_off+1+2*4] + ai2 * b[b_off+2+2*4] + ai3 * b[b_off+3+2*4] ); - d.put(dP+i+3*4 , ai0 * b[b_off+0+3*4] + ai1 * b[b_off+1+3*4] + ai2 * b[b_off+2+3*4] + ai3 * b[b_off+3+3*4] ); - } - } - - /** - * @param a - * @param b - * @param d result a*b - */ - public static final void multMatrixf(final FloatBuffer a, final float[] b, int b_off, FloatBuffer d) { - final int aP = a.position(); - final int dP = d.position(); - for (int i = 0; i < 4; i++) { - final float ai0=a.get(aP+i+0*4), ai1=a.get(aP+i+1*4), ai2=a.get(aP+i+2*4), ai3=a.get(aP+i+3*4); - d.put(dP+i+0*4 , ai0 * b[b_off+0+0*4] + ai1 * b[b_off+1+0*4] + ai2 * b[b_off+2+0*4] + ai3 * b[b_off+3+0*4] ); - d.put(dP+i+1*4 , ai0 * b[b_off+0+1*4] + ai1 * b[b_off+1+1*4] + ai2 * b[b_off+2+1*4] + ai3 * b[b_off+3+1*4] ); - d.put(dP+i+2*4 , ai0 * b[b_off+0+2*4] + ai1 * b[b_off+1+2*4] + ai2 * b[b_off+2+2*4] + ai3 * b[b_off+3+2*4] ); - d.put(dP+i+3*4 , ai0 * b[b_off+0+3*4] + ai1 * b[b_off+1+3*4] + ai2 * b[b_off+2+3*4] + ai3 * b[b_off+3+3*4] ); - } - } - - /** - * @param a - * @param b - * @param d result a*b - */ - public static final void multMatrixf(final FloatBuffer a, final FloatBuffer b, FloatBuffer d) { - final int aP = a.position(); - final int bP = b.position(); - final int dP = d.position(); - for (int i = 0; i < 4; i++) { - final float ai0=a.get(aP+i+0*4), ai1=a.get(aP+i+1*4), ai2=a.get(aP+i+2*4), ai3=a.get(aP+i+3*4); - d.put(dP+i+0*4 , ai0 * b.get(bP+0+0*4) + ai1 * b.get(bP+1+0*4) + ai2 * b.get(bP+2+0*4) + ai3 * b.get(bP+3+0*4) ); - d.put(dP+i+1*4 , ai0 * b.get(bP+0+1*4) + ai1 * b.get(bP+1+1*4) + ai2 * b.get(bP+2+1*4) + ai3 * b.get(bP+3+1*4) ); - d.put(dP+i+2*4 , ai0 * b.get(bP+0+2*4) + ai1 * b.get(bP+1+2*4) + ai2 * b.get(bP+2+2*4) + ai3 * b.get(bP+3+2*4) ); - d.put(dP+i+3*4 , ai0 * b.get(bP+0+3*4) + ai1 * b.get(bP+1+3*4) + ai2 * b.get(bP+2+3*4) + ai3 * b.get(bP+3+3*4) ); - } - } - - - /** - * Normalize vector - * - * @param v makes len(v)==1 - */ - public static void normalize(float[] v) { - float r = (float) Math.sqrt(v[0] * v[0] + v[1] * v[1] + v[2] * v[2]); - - if ( r == 0.0 || r == 1.0) { - return; - } - - r = 1.0f / r; - - v[0] *= r; - v[1] *= r; - v[2] *= r; - } - - /** - * Normalize vector - * - * @param v makes len(v)==1 - */ - public static void normalize(FloatBuffer v) { - final int vPos = v.position(); - - float r = (float) Math.sqrt(v.get(0+vPos) * v.get(0+vPos) + - v.get(1+vPos) * v.get(1+vPos) + - v.get(2+vPos) * v.get(2+vPos)); - - if ( r == 0.0 || r == 1.0) { - return; - } - - r = 1.0f / r; - - v.put(0+vPos, v.get(0+vPos) * r); - v.put(1+vPos, v.get(1+vPos) * r); - v.put(2+vPos, v.get(2+vPos) * r); - } - - - /** - * Calculate cross-product - * - * @param v1 - * @param v2 - * @param result v1 X v2 - */ - public static void cross(float[] v1, float[] v2, float[] result) { - result[0] = v1[1] * v2[2] - v1[2] * v2[1]; - result[1] = v1[2] * v2[0] - v1[0] * v2[2]; - result[2] = v1[0] * v2[1] - v1[1] * v2[0]; - } - - /** - * Calculate cross-product - * - * @param v1 - * @param v2 - * @param result v1 X v2 - */ - public static void cross(FloatBuffer v1, FloatBuffer v2, FloatBuffer result) { - final int v1Pos = v1.position(); - final int v2Pos = v2.position(); - final int rPos = result.position(); - - result.put(0+rPos, v1.get(1+v1Pos) * v2.get(2+v2Pos) - v1.get(2+v1Pos) * v2.get(1+v2Pos)); - result.put(1+rPos, v1.get(2+v1Pos) * v2.get(0+v2Pos) - v1.get(0+v1Pos) * v2.get(2+v2Pos)); - result.put(2+rPos, v1.get(0+v1Pos) * v2.get(1+v2Pos) - v1.get(1+v1Pos) * v2.get(0+v2Pos)); - } - - /** - * Method __gluMultMatrixVecf - * - * @param m_in - * @param m_in_off - * @param v_in - * @param v_out m_in * v_in - */ - public static void multMatrixVecf(float[] m_in, int m_in_off, float[] v_in, int v_in_off, float[] v_out) { - for (int i = 0; i < 4; i++) { - v_out[i] = - v_in[0+v_in_off] * m_in[0*4+i+m_in_off] + - v_in[1+v_in_off] * m_in[1*4+i+m_in_off] + - v_in[2+v_in_off] * m_in[2*4+i+m_in_off] + - v_in[3+v_in_off] * m_in[3*4+i+m_in_off]; - } - } - - /** - * Method __gluMultMatrixVecf - * - * @param m_in - * @param m_in_off - * @param v_in - * @param v_out m_in * v_in - */ - public static void multMatrixVecf(float[] m_in, float[] v_in, float[] v_out) { - for (int i = 0; i < 4; i++) { - v_out[i] = - v_in[0] * m_in[0*4+i] + - v_in[1] * m_in[1*4+i] + - v_in[2] * m_in[2*4+i] + - v_in[3] * m_in[3*4+i]; - } - } - - /** - * Method __gluMultMatrixVecf - * - * @param m_in - * @param v_in - * @param v_out m_in * v_in - */ - public static void multMatrixVecf(FloatBuffer m_in, FloatBuffer v_in, FloatBuffer v_out) { - int inPos = v_in.position(); - int outPos = v_out.position(); - int matrixPos = m_in.position(); - for (int i = 0; i < 4; i++) { - v_out.put(i + outPos, - v_in.get(0+inPos) * m_in.get(0*4+i+matrixPos) + - v_in.get(1+inPos) * m_in.get(1*4+i+matrixPos) + - v_in.get(2+inPos) * m_in.get(2*4+i+matrixPos) + - v_in.get(3+inPos) * m_in.get(3*4+i+matrixPos)); - } - } - - /** - * Slices a ByteBuffer or a primitive float array to a FloatBuffer at the given position with the given size - * in float-space. - * <p> - * Using a ByteBuffer as the source guarantees - * keeping the source native order programmatically. - * This works around <a href="http://code.google.com/p/android/issues/detail?id=16434">Honeycomb / Android 3.0 Issue 16434</a>. - * This bug is resolved at least in Android 3.2. - * </p> - * - * @param buf source Buffer, maybe ByteBuffer (recommended) or FloatBuffer or <code>null</code>. - * Buffer's position is ignored and floatPos is being used. - * @param backing source float array or <code>null</code> - * @param floatPos {@link Buffers#SIZEOF_FLOAT} position - * @param floatSize {@link Buffers#SIZEOF_FLOAT} size - * @return FloatBuffer w/ native byte order as given ByteBuffer - */ - public static FloatBuffer slice2Float(Buffer buf, float[] backing, int floatPos, int floatSize) { - if(buf instanceof ByteBuffer) { - ByteBuffer bb = (ByteBuffer) buf; - bb.position( floatPos * Buffers.SIZEOF_FLOAT ); - bb.limit( (floatPos + floatSize) * Buffers.SIZEOF_FLOAT ); - FloatBuffer fb = bb.slice().order(bb.order()).asFloatBuffer(); // slice and duplicate may change byte order - fb.mark(); - return fb; - } else if(null != backing) { - FloatBuffer fb = FloatBuffer.wrap(backing, floatPos, floatSize); - fb.mark(); - return fb; - } else if(buf instanceof FloatBuffer) { - FloatBuffer fb = (FloatBuffer) buf; - fb.position( floatPos ); - fb.limit( floatPos + floatSize ); - FloatBuffer fb0 = fb.slice(); // slice and duplicate may change byte order - fb0.mark(); - return fb0; - } else { - throw new InternalError("XXX"); - } - } - - public static final int getRequiredFloatBufferSize() { return 2*16+2*4+3*3; } - - // Note that we have cloned parts of the implementation in order to - // support incoming Buffers. The reason for this is to avoid loading - // non-direct buffer subclasses unnecessarily, because doing so can - // cause performance decreases on direct buffer operations, at least - // on the current HotSpot JVM. It would be nicer (and make the code - // simpler) to simply have the array-based entry points delegate to - // the versions taking Buffers by wrapping the arrays. - - // Array-based implementation - private final float[] matrix = new float[16]; - private final float[][] tempInvertMatrix = new float[4][4]; - - private final float[] in = new float[4]; - private final float[] out = new float[4]; - - // Buffer-based implementation - private FloatBuffer matrixBuf; - private FloatBuffer tempInvertMatrixBuf; - - private FloatBuffer inBuf; - private FloatBuffer outBuf; - - private FloatBuffer forwardBuf; - private FloatBuffer sideBuf; - private FloatBuffer upBuf; - - public ProjectFloat() { - this(false); - } - - public ProjectFloat(boolean useBackingArray) { - this(useBackingArray ? null : Buffers.newDirectByteBuffer(getRequiredFloatBufferSize() * Buffers.SIZEOF_FLOAT), - useBackingArray ? new float[getRequiredFloatBufferSize()] : null, - 0); - } - - /** - * @param floatBuffer source buffer, may be ByteBuffer (recommended) or FloatBuffer or <code>null</code>. - * If used, shall be ≥ {@link #getRequiredFloatBufferSize()} + floatOffset. - * Buffer's position is ignored and floatPos is being used. - * @param floatArray source float array or <code>null</code>. - * If used, size shall be ≥ {@link #getRequiredFloatBufferSize()} + floatOffset. - * @param floatOffset Offset for either of the given sources (buffer or array) - */ - public ProjectFloat(Buffer floatBuffer, float[] floatArray, int floatOffset) { - int floatPos = floatOffset; - int floatSize = 16; - matrixBuf = slice2Float(floatBuffer, floatArray, floatPos, floatSize); - floatPos += floatSize; - tempInvertMatrixBuf = slice2Float(floatBuffer, floatArray, floatPos, floatSize); - floatPos += floatSize; - floatSize = 4; - inBuf = slice2Float(floatBuffer, floatArray, floatPos, floatSize); - floatPos += floatSize; - outBuf = slice2Float(floatBuffer, floatArray, floatPos, floatSize); - floatPos += floatSize; - floatSize = 3; - forwardBuf = slice2Float(floatBuffer, floatArray, floatPos, floatSize); - floatPos += floatSize; - sideBuf = slice2Float(floatBuffer, floatArray, floatPos, floatSize); - floatPos += floatSize; - upBuf = slice2Float(floatBuffer, floatArray, floatPos, floatSize); - } - - public void destroy() { - matrixBuf = null; - tempInvertMatrixBuf = null; - inBuf = null; - outBuf = null; - forwardBuf = null; - sideBuf = null; - upBuf = null; - } - - /** - * @param src - * @param srcOffset - * @param inverse - * @param inverseOffset - * @return - */ - public boolean gluInvertMatrixf(float[] src, int srcOffset, float[] inverse, int inverseOffset) { - int i, j, k, swap; - float t; - float[][] temp = tempInvertMatrix; - - for (i = 0; i < 4; i++) { - for (j = 0; j < 4; j++) { - temp[i][j] = src[i*4+j+srcOffset]; - } - } - makeIdentityf(inverse, inverseOffset); - - for (i = 0; i < 4; i++) { - // - // Look for largest element in column - // - swap = i; - for (j = i + 1; j < 4; j++) { - if (Math.abs(temp[j][i]) > Math.abs(temp[i][i])) { - swap = j; - } - } - - if (swap != i) { - // - // Swap rows. - // - for (k = 0; k < 4; k++) { - t = temp[i][k]; - temp[i][k] = temp[swap][k]; - temp[swap][k] = t; - - t = inverse[i*4+k+inverseOffset]; - inverse[i*4+k+inverseOffset] = inverse[swap*4+k+inverseOffset]; - inverse[swap*4+k+inverseOffset] = t; - } - } - - if (temp[i][i] == 0) { - // - // No non-zero pivot. The matrix is singular, which shouldn't - // happen. This means the user gave us a bad matrix. - // - return false; - } - - t = temp[i][i]; - for (k = 0; k < 4; k++) { - temp[i][k] /= t; - inverse[i*4+k+inverseOffset] /= t; - } - for (j = 0; j < 4; j++) { - if (j != i) { - t = temp[j][i]; - for (k = 0; k < 4; k++) { - temp[j][k] -= temp[i][k] * t; - inverse[j*4+k+inverseOffset] -= inverse[i*4+k+inverseOffset]*t; - } - } - } - } - return true; - } - - /** - * @param src - * @param inverse - * - * @return - */ - public boolean gluInvertMatrixf(FloatBuffer src, FloatBuffer inverse) { - int i, j, k, swap; - float t; - - int srcPos = src.position(); - int invPos = inverse.position(); - - FloatBuffer temp = tempInvertMatrixBuf; - - for (i = 0; i < 4; i++) { - for (j = 0; j < 4; j++) { - temp.put(i*4+j, src.get(i*4+j + srcPos)); - } - } - makeIdentityf(inverse); - - for (i = 0; i < 4; i++) { - // - // Look for largest element in column - // - swap = i; - for (j = i + 1; j < 4; j++) { - if (Math.abs(temp.get(j*4+i)) > Math.abs(temp.get(i*4+i))) { - swap = j; - } - } - - if (swap != i) { - // - // Swap rows. - // - for (k = 0; k < 4; k++) { - t = temp.get(i*4+k); - temp.put(i*4+k, temp.get(swap*4+k)); - temp.put(swap*4+k, t); - - t = inverse.get(i*4+k + invPos); - inverse.put(i*4+k + invPos, inverse.get(swap*4+k + invPos)); - inverse.put(swap*4+k + invPos, t); - } - } - - if (temp.get(i*4+i) == 0) { - // - // No non-zero pivot. The matrix is singular, which shouldn't - // happen. This means the user gave us a bad matrix. - // - return false; - } - - t = temp.get(i*4+i); - for (k = 0; k < 4; k++) { - temp.put(i*4+k, temp.get(i*4+k) / t); - inverse.put(i*4+k + invPos, inverse.get(i*4+k + invPos) / t); - } - for (j = 0; j < 4; j++) { - if (j != i) { - t = temp.get(j*4+i); - for (k = 0; k < 4; k++) { - temp.put(j*4+k, temp.get(j*4+k) - temp.get(i*4+k) * t); - inverse.put(j*4+k + invPos, inverse.get(j*4+k + invPos) - inverse.get(i*4+k + invPos) * t); - } - } - } - } - return true; - } - - - /** - * Method gluOrtho2D. - * - * @param left - * @param right - * @param bottom - * @param top - */ - public void gluOrtho2D(GLMatrixFunc gl, float left, float right, float bottom, float top) { - gl.glOrthof(left, right, bottom, top, -1, 1); - } - - /** - * Method gluPerspective. - * - * @param fovy - * @param aspect - * @param zNear - * @param zFar - */ - public void gluPerspective(GLMatrixFunc gl, float fovy, float aspect, float zNear, float zFar) { - float sine, cotangent, deltaZ; - float radians = fovy / 2 * (float) Math.PI / 180; - - deltaZ = zFar - zNear; - sine = (float) Math.sin(radians); - - if ((deltaZ == 0) || (sine == 0) || (aspect == 0)) { - return; - } - - cotangent = (float) Math.cos(radians) / sine; - - makeIdentityf(matrixBuf); - - matrixBuf.put(0 * 4 + 0, cotangent / aspect); - matrixBuf.put(1 * 4 + 1, cotangent); - matrixBuf.put(2 * 4 + 2, - (zFar + zNear) / deltaZ); - matrixBuf.put(2 * 4 + 3, -1); - matrixBuf.put(3 * 4 + 2, -2 * zNear * zFar / deltaZ); - matrixBuf.put(3 * 4 + 3, 0); - - gl.glMultMatrixf(matrixBuf); - } - - /** - * Method gluLookAt - * - * @param eyex - * @param eyey - * @param eyez - * @param centerx - * @param centery - * @param centerz - * @param upx - * @param upy - * @param upz - */ - public void gluLookAt(GLMatrixFunc gl, - float eyex, float eyey, float eyez, - float centerx, float centery, float centerz, - float upx, float upy, float upz) { - FloatBuffer forward = this.forwardBuf; - FloatBuffer side = this.sideBuf; - FloatBuffer up = this.upBuf; - - forward.put(0, centerx - eyex); - forward.put(1, centery - eyey); - forward.put(2, centerz - eyez); - - up.put(0, upx); - up.put(1, upy); - up.put(2, upz); - - normalize(forward); - - /* Side = forward x up */ - cross(forward, up, side); - normalize(side); - - /* Recompute up as: up = side x forward */ - cross(side, forward, up); - - makeIdentityf(matrixBuf); - matrixBuf.put(0 * 4 + 0, side.get(0)); - matrixBuf.put(1 * 4 + 0, side.get(1)); - matrixBuf.put(2 * 4 + 0, side.get(2)); - - matrixBuf.put(0 * 4 + 1, up.get(0)); - matrixBuf.put(1 * 4 + 1, up.get(1)); - matrixBuf.put(2 * 4 + 1, up.get(2)); - - matrixBuf.put(0 * 4 + 2, -forward.get(0)); - matrixBuf.put(1 * 4 + 2, -forward.get(1)); - matrixBuf.put(2 * 4 + 2, -forward.get(2)); - - gl.glMultMatrixf(matrixBuf); - gl.glTranslatef(-eyex, -eyey, -eyez); - } - - /** - * Method gluProject - * - * @param objx - * @param objy - * @param objz - * @param modelMatrix - * @param projMatrix - * @param viewport - * @param win_pos - * - * @return - */ - public boolean gluProject(float objx, float objy, float objz, - float[] modelMatrix, int modelMatrix_offset, - float[] projMatrix, int projMatrix_offset, - int[] viewport, int viewport_offset, - float[] win_pos, int win_pos_offset ) { - - float[] in = this.in; - float[] out = this.out; - - in[0] = objx; - in[1] = objy; - in[2] = objz; - in[3] = 1.0f; - - multMatrixVecf(modelMatrix, modelMatrix_offset, in, 0, out); - multMatrixVecf(projMatrix, projMatrix_offset, out, 0, in); - - if (in[3] == 0.0f) { - return false; - } - - in[3] = (1.0f / in[3]) * 0.5f; - - // Map x, y and z to range 0-1 - in[0] = in[0] * in[3] + 0.5f; - in[1] = in[1] * in[3] + 0.5f; - in[2] = in[2] * in[3] + 0.5f; - - // Map x,y to viewport - win_pos[0+win_pos_offset] = in[0] * viewport[2+viewport_offset] + viewport[0+viewport_offset]; - win_pos[1+win_pos_offset] = in[1] * viewport[3+viewport_offset] + viewport[1+viewport_offset]; - win_pos[2+win_pos_offset] = in[2]; - - return true; - } - - public boolean gluProject(float objx, float objy, float objz, - FloatBuffer modelMatrix, - FloatBuffer projMatrix, - int[] viewport, int viewport_offset, - float[] win_pos, int win_pos_offset ) { - - FloatBuffer in = this.inBuf; - FloatBuffer out = this.outBuf; - - in.put(0, objx); - in.put(1, objy); - in.put(2, objz); - in.put(3, 1.0f); - - multMatrixVecf(modelMatrix, in, out); - multMatrixVecf(projMatrix, out, in); - - if (in.get(3) == 0.0f) { - return false; - } - - in.put(3, (1.0f / in.get(3)) * 0.5f); - - // Map x, y and z to range 0-1 - in.put(0, in.get(0) * in.get(3) + 0.5f); - in.put(1, in.get(1) * in.get(3) + 0.5f); - in.put(2, in.get(2) * in.get(3) + 0.5f); - - // Map x,y to viewport - win_pos[0+win_pos_offset] = in.get(0) * viewport[2+viewport_offset] + viewport[0+viewport_offset]; - win_pos[1+win_pos_offset] = in.get(1) * viewport[3+viewport_offset] + viewport[1+viewport_offset]; - win_pos[2+win_pos_offset] = in.get(2); - - return true; - } - - /** - * Method gluProject - * - * @param objx - * @param objy - * @param objz - * @param modelMatrix - * @param projMatrix - * @param viewport - * @param win_pos - * - * @return - */ - public boolean gluProject(float objx, float objy, float objz, - FloatBuffer modelMatrix, - FloatBuffer projMatrix, - IntBuffer viewport, - FloatBuffer win_pos) { - - FloatBuffer in = this.inBuf; - FloatBuffer out = this.outBuf; - - in.put(0, objx); - in.put(1, objy); - in.put(2, objz); - in.put(3, 1.0f); - - multMatrixVecf(modelMatrix, in, out); - multMatrixVecf(projMatrix, out, in); - - if (in.get(3) == 0.0f) { - return false; - } - - in.put(3, (1.0f / in.get(3)) * 0.5f); - - // Map x, y and z to range 0-1 - in.put(0, in.get(0) * in.get(3) + 0.5f); - in.put(1, in.get(1) * in.get(3) + 0.5f); - in.put(2, in.get(2) * in.get(3) + 0.5f); - - // Map x,y to viewport - int vPos = viewport.position(); - int wPos = win_pos.position(); - win_pos.put(0+wPos, in.get(0) * viewport.get(2+vPos) + viewport.get(0+vPos)); - win_pos.put(1+wPos, in.get(1) * viewport.get(3+vPos) + viewport.get(1+vPos)); - win_pos.put(2+wPos, in.get(2)); - - return true; - } - - - /** - * Method gluUnproject - * - * @param winx - * @param winy - * @param winz - * @param modelMatrix - * @param projMatrix - * @param viewport - * @param obj_pos - * - * @return - */ - public boolean gluUnProject(float winx, float winy, float winz, - float[] modelMatrix, int modelMatrix_offset, - float[] projMatrix, int projMatrix_offset, - int[] viewport, int viewport_offset, - float[] obj_pos, int obj_pos_offset) { - float[] in = this.in; - float[] out = this.out; - - multMatrixf(modelMatrix, modelMatrix_offset, projMatrix, projMatrix_offset, matrix, 0); - - if (!gluInvertMatrixf(matrix, 0, matrix, 0)) { - return false; - } - - in[0] = winx; - in[1] = winy; - in[2] = winz; - in[3] = 1.0f; - - // Map x and y from window coordinates - in[0] = (in[0] - viewport[0+viewport_offset]) / viewport[2+viewport_offset]; - in[1] = (in[1] - viewport[1+viewport_offset]) / viewport[3+viewport_offset]; - - // Map to range -1 to 1 - in[0] = in[0] * 2 - 1; - in[1] = in[1] * 2 - 1; - in[2] = in[2] * 2 - 1; - - multMatrixVecf(matrix, in, out); - - if (out[3] == 0.0) { - return false; - } - - out[3] = 1.0f / out[3]; - - obj_pos[0+obj_pos_offset] = out[0] * out[3]; - obj_pos[1+obj_pos_offset] = out[1] * out[3]; - obj_pos[2+obj_pos_offset] = out[2] * out[3]; - - return true; - } - - - public boolean gluUnProject(float winx, float winy, float winz, - FloatBuffer modelMatrix, - FloatBuffer projMatrix, - int[] viewport, int viewport_offset, - float[] obj_pos, int obj_pos_offset) { - FloatBuffer in = this.inBuf; - FloatBuffer out = this.outBuf; - - multMatrixf(modelMatrix, projMatrix, matrixBuf); - - if (!gluInvertMatrixf(matrixBuf, matrixBuf)) { - return false; - } - - in.put(0, winx); - in.put(1, winy); - in.put(2, winz); - in.put(3, 1.0f); - - // Map x and y from window coordinates - in.put(0, (in.get(0) - viewport[0+viewport_offset]) / viewport[2+viewport_offset]); - in.put(1, (in.get(1) - viewport[1+viewport_offset]) / viewport[3+viewport_offset]); - - // Map to range -1 to 1 - in.put(0, in.get(0) * 2 - 1); - in.put(1, in.get(1) * 2 - 1); - in.put(2, in.get(2) * 2 - 1); - - multMatrixVecf(matrixBuf, in, out); - - if (out.get(3) == 0.0f) { - return false; - } - - out.put(3, 1.0f / out.get(3)); - - obj_pos[0+obj_pos_offset] = out.get(0) * out.get(3); - obj_pos[1+obj_pos_offset] = out.get(1) * out.get(3); - obj_pos[2+obj_pos_offset] = out.get(2) * out.get(3); - - return true; - } - - /** - * Method gluUnproject - * - * @param winx - * @param winy - * @param winz - * @param modelMatrix - * @param projMatrix - * @param viewport - * @param obj_pos - * - * @return - */ - public boolean gluUnProject(float winx, float winy, float winz, - FloatBuffer modelMatrix, - FloatBuffer projMatrix, - IntBuffer viewport, - FloatBuffer obj_pos) { - FloatBuffer in = this.inBuf; - FloatBuffer out = this.outBuf; - - multMatrixf(modelMatrix, projMatrix, matrixBuf); - - if (!gluInvertMatrixf(matrixBuf, matrixBuf)) { - return false; - } - - in.put(0, winx); - in.put(1, winy); - in.put(2, winz); - in.put(3, 1.0f); - - // Map x and y from window coordinates - int vPos = viewport.position(); - int oPos = obj_pos.position(); - in.put(0, (in.get(0) - viewport.get(0+vPos)) / viewport.get(2+vPos)); - in.put(1, (in.get(1) - viewport.get(1+vPos)) / viewport.get(3+vPos)); - - // Map to range -1 to 1 - in.put(0, in.get(0) * 2 - 1); - in.put(1, in.get(1) * 2 - 1); - in.put(2, in.get(2) * 2 - 1); - - multMatrixVecf(matrixBuf, in, out); - - if (out.get(3) == 0.0f) { - return false; - } - - out.put(3, 1.0f / out.get(3)); - - obj_pos.put(0+oPos, out.get(0) * out.get(3)); - obj_pos.put(1+oPos, out.get(1) * out.get(3)); - obj_pos.put(2+oPos, out.get(2) * out.get(3)); - - return true; - } - - - /** - * Method gluUnproject4 - * - * @param winx - * @param winy - * @param winz - * @param clipw - * @param modelMatrix - * @param projMatrix - * @param viewport - * @param near - * @param far - * @param obj_pos - * - * @return - */ - public boolean gluUnProject4(float winx, - float winy, - float winz, - float clipw, - float[] modelMatrix, - int modelMatrix_offset, - float[] projMatrix, - int projMatrix_offset, - int[] viewport, - int viewport_offset, - float near, - float far, - float[] obj_pos, - int obj_pos_offset ) { - float[] in = this.in; - float[] out = this.out; - - multMatrixf(modelMatrix, modelMatrix_offset, projMatrix, projMatrix_offset, matrix, 0); - - if (!gluInvertMatrixf(matrix, 0, matrix, 0)) - return false; - - in[0] = winx; - in[1] = winy; - in[2] = winz; - in[3] = clipw; - - // Map x and y from window coordinates - in[0] = (in[0] - viewport[0+viewport_offset]) / viewport[2+viewport_offset]; - in[1] = (in[1] - viewport[1+viewport_offset]) / viewport[3+viewport_offset]; - in[2] = (in[2] - near) / (far - near); - - // Map to range -1 to 1 - in[0] = in[0] * 2 - 1; - in[1] = in[1] * 2 - 1; - in[2] = in[2] * 2 - 1; - - multMatrixVecf(matrix, in, out); - - if (out[3] == 0.0f) - return false; - - obj_pos[0+obj_pos_offset] = out[0]; - obj_pos[1+obj_pos_offset] = out[1]; - obj_pos[2+obj_pos_offset] = out[2]; - obj_pos[3+obj_pos_offset] = out[3]; - return true; - } - - /** - * Method gluUnproject4 - * - * @param winx - * @param winy - * @param winz - * @param clipw - * @param modelMatrix - * @param projMatrix - * @param viewport - * @param near - * @param far - * @param obj_pos - * - * @return - */ - public boolean gluUnProject4(float winx, - float winy, - float winz, - float clipw, - FloatBuffer modelMatrix, - FloatBuffer projMatrix, - IntBuffer viewport, - float near, - float far, - FloatBuffer obj_pos) { - FloatBuffer in = this.inBuf; - FloatBuffer out = this.outBuf; - - multMatrixf(modelMatrix, projMatrix, matrixBuf); - - if (!gluInvertMatrixf(matrixBuf, matrixBuf)) - return false; - - in.put(0, winx); - in.put(1, winy); - in.put(2, winz); - in.put(3, clipw); - - // Map x and y from window coordinates - int vPos = viewport.position(); - in.put(0, (in.get(0) - viewport.get(0+vPos)) / viewport.get(2+vPos)); - in.put(1, (in.get(1) - viewport.get(1+vPos)) / viewport.get(3+vPos)); - in.put(2, (in.get(2) - near) / (far - near)); - - // Map to range -1 to 1 - in.put(0, in.get(0) * 2 - 1); - in.put(1, in.get(1) * 2 - 1); - in.put(2, in.get(2) * 2 - 1); - - multMatrixVecf(matrixBuf, in, out); - - if (out.get(3) == 0.0f) - return false; - - int oPos = obj_pos.position(); - obj_pos.put(0+oPos, out.get(0)); - obj_pos.put(1+oPos, out.get(1)); - obj_pos.put(2+oPos, out.get(2)); - obj_pos.put(3+oPos, out.get(3)); - return true; - } - - - /** - * Method gluPickMatrix - * - * @param x - * @param y - * @param deltaX - * @param deltaY - * @param viewport - */ - public void gluPickMatrix(GLMatrixFunc gl, - float x, - float y, - float deltaX, - float deltaY, - IntBuffer viewport) { - if (deltaX <= 0 || deltaY <= 0) { - return; - } - - /* Translate and scale the picked region to the entire window */ - int vPos = viewport.position(); - gl.glTranslatef((viewport.get(2+vPos) - 2 * (x - viewport.get(0+vPos))) / deltaX, - (viewport.get(3+vPos) - 2 * (y - viewport.get(1+vPos))) / deltaY, - 0); - gl.glScalef(viewport.get(2) / deltaX, viewport.get(3) / deltaY, 1.0f); - } - - /** - * Method gluPickMatrix - * - * @param x - * @param y - * @param deltaX - * @param deltaY - * @param viewport - * @param viewport_offset - */ - public void gluPickMatrix(GLMatrixFunc gl, - float x, - float y, - float deltaX, - float deltaY, - int[] viewport, - int viewport_offset) { - if (deltaX <= 0 || deltaY <= 0) { - return; - } - - /* Translate and scale the picked region to the entire window */ - gl.glTranslatef((viewport[2+viewport_offset] - 2 * (x - viewport[0+viewport_offset])) / deltaX, - (viewport[3+viewport_offset] - 2 * (y - viewport[1+viewport_offset])) / deltaY, - 0); - gl.glScalef(viewport[2+viewport_offset] / deltaX, viewport[3+viewport_offset] / deltaY, 1.0f); - } - -} |