159b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta/* 259b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta * Copyright (c) 2009-2010 jMonkeyEngine 359b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta * All rights reserved. 459b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta * 559b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta * Redistribution and use in source and binary forms, with or without 659b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta * modification, are permitted provided that the following conditions are 759b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta * met: 859b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta * 959b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta * * Redistributions of source code must retain the above copyright 1059b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta * notice, this list of conditions and the following disclaimer. 1159b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta * 1259b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta * * Redistributions in binary form must reproduce the above copyright 1359b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta * notice, this list of conditions and the following disclaimer in the 1459b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta * documentation and/or other materials provided with the distribution. 1559b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta * 1659b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta * * Neither the name of 'jMonkeyEngine' nor the names of its contributors 1759b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta * may be used to endorse or promote products derived from this software 1859b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta * without specific prior written permission. 1959b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta * 2059b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 2159b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 2259b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 2359b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR 2459b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, 2559b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 2659b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR 2759b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF 2859b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING 2959b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS 3059b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 3159b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta */ 3259b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta// $Id: Sphere.java 4163 2009-03-25 01:14:55Z matt.yellen $ 3359b2e6871c65f58fdad78cd7229c292f6a177578Scott Bartapackage com.jme3.scene.shape; 3459b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta 3559b2e6871c65f58fdad78cd7229c292f6a177578Scott Bartaimport com.jme3.export.InputCapsule; 3659b2e6871c65f58fdad78cd7229c292f6a177578Scott Bartaimport com.jme3.export.JmeExporter; 3759b2e6871c65f58fdad78cd7229c292f6a177578Scott Bartaimport com.jme3.export.JmeImporter; 3859b2e6871c65f58fdad78cd7229c292f6a177578Scott Bartaimport com.jme3.export.OutputCapsule; 3959b2e6871c65f58fdad78cd7229c292f6a177578Scott Bartaimport com.jme3.math.FastMath; 4059b2e6871c65f58fdad78cd7229c292f6a177578Scott Bartaimport com.jme3.math.Vector3f; 4159b2e6871c65f58fdad78cd7229c292f6a177578Scott Bartaimport com.jme3.scene.Mesh; 4259b2e6871c65f58fdad78cd7229c292f6a177578Scott Bartaimport com.jme3.scene.VertexBuffer.Type; 4359b2e6871c65f58fdad78cd7229c292f6a177578Scott Bartaimport com.jme3.util.BufferUtils; 4459b2e6871c65f58fdad78cd7229c292f6a177578Scott Bartaimport com.jme3.util.TempVars; 4559b2e6871c65f58fdad78cd7229c292f6a177578Scott Bartaimport java.io.IOException; 4659b2e6871c65f58fdad78cd7229c292f6a177578Scott Bartaimport java.nio.FloatBuffer; 4759b2e6871c65f58fdad78cd7229c292f6a177578Scott Bartaimport java.nio.ShortBuffer; 4859b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta 4959b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta/** 5059b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta * <code>Sphere</code> represents a 3D object with all points equidistance 5159b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta * from a center point. 5259b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta * 5359b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta * @author Joshua Slack 5459b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta * @version $Revision: 4163 $, $Date: 2009-03-24 21:14:55 -0400 (Tue, 24 Mar 2009) $ 5559b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta */ 5659b2e6871c65f58fdad78cd7229c292f6a177578Scott Bartapublic class Sphere extends Mesh { 5759b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta 5859b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta public enum TextureMode { 5959b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta 6059b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta /** 6159b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta * Wrap texture radially and along z-axis 6259b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta */ 6359b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta Original, 6459b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta /** 6559b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta * Wrap texure radially, but spherically project along z-axis 6659b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta */ 6759b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta Projected, 6859b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta /** 6959b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta * Apply texture to each pole. Eliminates polar distortion, 7059b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta * but mirrors the texture across the equator 7159b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta */ 7259b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta Polar 7359b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta } 7459b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta protected int vertCount; 7559b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta protected int triCount; 7659b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta protected int zSamples; 7759b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta protected int radialSamples; 7859b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta protected boolean useEvenSlices; 7959b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta protected boolean interior; 8059b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta /** the distance from the center point each point falls on */ 8159b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta public float radius; 8259b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta protected TextureMode textureMode = TextureMode.Original; 8359b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta 8459b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta /** 8559b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta * Serialization only. Do not use. 8659b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta */ 8759b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta public Sphere() { 8859b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta } 8959b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta 9059b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta /** 9159b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta * Constructs a sphere. All geometry data buffers are updated automatically. 9259b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta * Both zSamples and radialSamples increase the quality of the generated 9359b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta * sphere. 9459b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta * 9559b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta * @param zSamples 9659b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta * The number of samples along the Z. 9759b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta * @param radialSamples 9859b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta * The number of samples along the radial. 9959b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta * @param radius 10059b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta * The radius of the sphere. 10159b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta */ 10259b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta public Sphere(int zSamples, int radialSamples, float radius) { 10359b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta this(zSamples, radialSamples, radius, false, false); 10459b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta } 10559b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta 10659b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta /** 10759b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta * Constructs a sphere. Additional arg to evenly space latitudinal slices 10859b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta * 10959b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta * @param zSamples 11059b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta * The number of samples along the Z. 11159b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta * @param radialSamples 11259b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta * The number of samples along the radial. 11359b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta * @param radius 11459b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta * The radius of the sphere. 11559b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta * @param useEvenSlices 11659b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta * Slice sphere evenly along the Z axis 11759b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta * @param interior 11859b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta * Not yet documented 11959b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta */ 12059b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta public Sphere(int zSamples, int radialSamples, float radius, boolean useEvenSlices, boolean interior) { 12159b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta updateGeometry(zSamples, radialSamples, radius, useEvenSlices, interior); 12259b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta } 12359b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta 12459b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta public int getRadialSamples() { 12559b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta return radialSamples; 12659b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta } 12759b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta 12859b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta public float getRadius() { 12959b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta return radius; 13059b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta } 13159b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta 13259b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta /** 13359b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta * @return Returns the textureMode. 13459b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta */ 13559b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta public TextureMode getTextureMode() { 13659b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta return textureMode; 13759b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta } 13859b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta 13959b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta public int getZSamples() { 14059b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta return zSamples; 14159b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta } 14259b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta 14359b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta /** 14459b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta * builds the vertices based on the radius, radial and zSamples. 14559b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta */ 14659b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta private void setGeometryData() { 14759b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta // allocate vertices 14859b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta vertCount = (zSamples - 2) * (radialSamples + 1) + 2; 14959b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta 15059b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta FloatBuffer posBuf = BufferUtils.createVector3Buffer(vertCount); 15159b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta 15259b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta // allocate normals if requested 15359b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta FloatBuffer normBuf = BufferUtils.createVector3Buffer(vertCount); 15459b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta 15559b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta // allocate texture coordinates 15659b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta FloatBuffer texBuf = BufferUtils.createVector2Buffer(vertCount); 15759b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta 15859b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta setBuffer(Type.Position, 3, posBuf); 15959b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta setBuffer(Type.Normal, 3, normBuf); 16059b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta setBuffer(Type.TexCoord, 2, texBuf); 16159b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta 16259b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta // generate geometry 16359b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta float fInvRS = 1.0f / radialSamples; 16459b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta float fZFactor = 2.0f / (zSamples - 1); 16559b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta 16659b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta // Generate points on the unit circle to be used in computing the mesh 16759b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta // points on a sphere slice. 16859b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta float[] afSin = new float[(radialSamples + 1)]; 16959b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta float[] afCos = new float[(radialSamples + 1)]; 17059b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta for (int iR = 0; iR < radialSamples; iR++) { 17159b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta float fAngle = FastMath.TWO_PI * fInvRS * iR; 17259b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta afCos[iR] = FastMath.cos(fAngle); 17359b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta afSin[iR] = FastMath.sin(fAngle); 17459b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta } 17559b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta afSin[radialSamples] = afSin[0]; 17659b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta afCos[radialSamples] = afCos[0]; 17759b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta 17859b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta TempVars vars = TempVars.get(); 17959b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta Vector3f tempVa = vars.vect1; 18059b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta Vector3f tempVb = vars.vect2; 18159b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta Vector3f tempVc = vars.vect3; 18259b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta 18359b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta // generate the sphere itself 18459b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta int i = 0; 18559b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta for (int iZ = 1; iZ < (zSamples - 1); iZ++) { 18659b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta float fAFraction = FastMath.HALF_PI * (-1.0f + fZFactor * iZ); // in (-pi/2, pi/2) 18759b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta float fZFraction; 18859b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta if (useEvenSlices) { 18959b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta fZFraction = -1.0f + fZFactor * iZ; // in (-1, 1) 19059b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta } else { 19159b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta fZFraction = FastMath.sin(fAFraction); // in (-1,1) 19259b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta } 19359b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta float fZ = radius * fZFraction; 19459b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta 19559b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta // compute center of slice 19659b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta Vector3f kSliceCenter = tempVb.set(Vector3f.ZERO); 19759b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta kSliceCenter.z += fZ; 19859b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta 19959b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta // compute radius of slice 20059b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta float fSliceRadius = FastMath.sqrt(FastMath.abs(radius * radius 20159b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta - fZ * fZ)); 20259b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta 20359b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta // compute slice vertices with duplication at end point 20459b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta Vector3f kNormal; 20559b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta int iSave = i; 20659b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta for (int iR = 0; iR < radialSamples; iR++) { 20759b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta float fRadialFraction = iR * fInvRS; // in [0,1) 20859b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta Vector3f kRadial = tempVc.set(afCos[iR], afSin[iR], 0); 20959b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta kRadial.mult(fSliceRadius, tempVa); 21059b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta posBuf.put(kSliceCenter.x + tempVa.x).put( 21159b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta kSliceCenter.y + tempVa.y).put( 21259b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta kSliceCenter.z + tempVa.z); 21359b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta 21459b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta BufferUtils.populateFromBuffer(tempVa, posBuf, i); 21559b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta kNormal = tempVa; 21659b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta kNormal.normalizeLocal(); 21759b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta if (!interior) // allow interior texture vs. exterior 21859b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta { 21959b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta normBuf.put(kNormal.x).put(kNormal.y).put( 22059b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta kNormal.z); 22159b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta } else { 22259b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta normBuf.put(-kNormal.x).put(-kNormal.y).put( 22359b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta -kNormal.z); 22459b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta } 22559b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta 22659b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta if (textureMode == TextureMode.Original) { 22759b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta texBuf.put(fRadialFraction).put( 22859b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta 0.5f * (fZFraction + 1.0f)); 22959b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta } else if (textureMode == TextureMode.Projected) { 23059b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta texBuf.put(fRadialFraction).put( 23159b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta FastMath.INV_PI 23259b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta * (FastMath.HALF_PI + FastMath.asin(fZFraction))); 23359b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta } else if (textureMode == TextureMode.Polar) { 23459b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta float r = (FastMath.HALF_PI - FastMath.abs(fAFraction)) / FastMath.PI; 23559b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta float u = r * afCos[iR] + 0.5f; 23659b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta float v = r * afSin[iR] + 0.5f; 23759b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta texBuf.put(u).put(v); 23859b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta } 23959b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta 24059b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta i++; 24159b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta } 24259b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta 24359b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta BufferUtils.copyInternalVector3(posBuf, iSave, i); 24459b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta BufferUtils.copyInternalVector3(normBuf, iSave, i); 24559b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta 24659b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta if (textureMode == TextureMode.Original) { 24759b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta texBuf.put(1.0f).put( 24859b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta 0.5f * (fZFraction + 1.0f)); 24959b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta } else if (textureMode == TextureMode.Projected) { 25059b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta texBuf.put(1.0f).put( 25159b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta FastMath.INV_PI 25259b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta * (FastMath.HALF_PI + FastMath.asin(fZFraction))); 25359b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta } else if (textureMode == TextureMode.Polar) { 25459b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta float r = (FastMath.HALF_PI - FastMath.abs(fAFraction)) / FastMath.PI; 25559b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta texBuf.put(r + 0.5f).put(0.5f); 25659b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta } 25759b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta 25859b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta i++; 25959b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta } 26059b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta 26159b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta vars.release(); 26259b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta 26359b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta // south pole 26459b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta posBuf.position(i * 3); 26559b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta posBuf.put(0f).put(0f).put(-radius); 26659b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta 26759b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta normBuf.position(i * 3); 26859b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta if (!interior) { 26959b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta normBuf.put(0).put(0).put(-1); // allow for inner 27059b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta } // texture orientation 27159b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta // later. 27259b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta else { 27359b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta normBuf.put(0).put(0).put(1); 27459b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta } 27559b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta 27659b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta texBuf.position(i * 2); 27759b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta 27859b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta if (textureMode == TextureMode.Polar) { 27959b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta texBuf.put(0.5f).put(0.5f); 28059b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta } else { 28159b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta texBuf.put(0.5f).put(0.0f); 28259b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta } 28359b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta 28459b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta i++; 28559b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta 28659b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta // north pole 28759b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta posBuf.put(0).put(0).put(radius); 28859b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta 28959b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta if (!interior) { 29059b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta normBuf.put(0).put(0).put(1); 29159b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta } else { 29259b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta normBuf.put(0).put(0).put(-1); 29359b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta } 29459b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta 29559b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta if (textureMode == TextureMode.Polar) { 29659b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta texBuf.put(0.5f).put(0.5f); 29759b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta } else { 29859b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta texBuf.put(0.5f).put(1.0f); 29959b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta } 30059b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta 30159b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta updateBound(); 30259b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta setStatic(); 30359b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta } 30459b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta 30559b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta /** 30659b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta * sets the indices for rendering the sphere. 30759b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta */ 30859b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta private void setIndexData() { 30959b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta // allocate connectivity 31059b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta triCount = 2 * (zSamples - 2) * radialSamples; 31159b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta ShortBuffer idxBuf = BufferUtils.createShortBuffer(3 * triCount); 31259b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta setBuffer(Type.Index, 3, idxBuf); 31359b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta 31459b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta // generate connectivity 31559b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta int index = 0; 31659b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta for (int iZ = 0, iZStart = 0; iZ < (zSamples - 3); iZ++) { 31759b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta int i0 = iZStart; 31859b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta int i1 = i0 + 1; 31959b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta iZStart += (radialSamples + 1); 32059b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta int i2 = iZStart; 32159b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta int i3 = i2 + 1; 32259b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta for (int i = 0; i < radialSamples; i++, index += 6) { 32359b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta if (!interior) { 32459b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta idxBuf.put((short) i0++); 32559b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta idxBuf.put((short) i1); 32659b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta idxBuf.put((short) i2); 32759b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta idxBuf.put((short) i1++); 32859b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta idxBuf.put((short) i3++); 32959b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta idxBuf.put((short) i2++); 33059b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta } else { // inside view 33159b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta idxBuf.put((short) i0++); 33259b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta idxBuf.put((short) i2); 33359b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta idxBuf.put((short) i1); 33459b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta idxBuf.put((short) i1++); 33559b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta idxBuf.put((short) i2++); 33659b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta idxBuf.put((short) i3++); 33759b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta } 33859b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta } 33959b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta } 34059b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta 34159b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta // south pole triangles 34259b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta for (int i = 0; i < radialSamples; i++, index += 3) { 34359b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta if (!interior) { 34459b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta idxBuf.put((short) i); 34559b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta idxBuf.put((short) (vertCount - 2)); 34659b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta idxBuf.put((short) (i + 1)); 34759b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta } else { // inside view 34859b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta idxBuf.put((short) i); 34959b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta idxBuf.put((short) (i + 1)); 35059b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta idxBuf.put((short) (vertCount - 2)); 35159b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta } 35259b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta } 35359b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta 35459b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta // north pole triangles 35559b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta int iOffset = (zSamples - 3) * (radialSamples + 1); 35659b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta for (int i = 0; i < radialSamples; i++, index += 3) { 35759b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta if (!interior) { 35859b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta idxBuf.put((short) (i + iOffset)); 35959b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta idxBuf.put((short) (i + 1 + iOffset)); 36059b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta idxBuf.put((short) (vertCount - 1)); 36159b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta } else { // inside view 36259b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta idxBuf.put((short) (i + iOffset)); 36359b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta idxBuf.put((short) (vertCount - 1)); 36459b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta idxBuf.put((short) (i + 1 + iOffset)); 36559b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta } 36659b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta } 36759b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta } 36859b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta 36959b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta /** 37059b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta * @param textureMode 37159b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta * The textureMode to set. 37259b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta */ 37359b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta public void setTextureMode(TextureMode textureMode) { 37459b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta this.textureMode = textureMode; 37559b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta setGeometryData(); 37659b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta } 37759b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta 37859b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta /** 37959b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta * Changes the information of the sphere into the given values. 38059b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta * 38159b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta * @param zSamples the number of zSamples of the sphere. 38259b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta * @param radialSamples the number of radial samples of the sphere. 38359b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta * @param radius the radius of the sphere. 38459b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta */ 38559b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta public void updateGeometry(int zSamples, int radialSamples, float radius) { 38659b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta updateGeometry(zSamples, radialSamples, radius, false, false); 38759b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta } 38859b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta 38959b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta public void updateGeometry(int zSamples, int radialSamples, float radius, boolean useEvenSlices, boolean interior) { 39059b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta this.zSamples = zSamples; 39159b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta this.radialSamples = radialSamples; 39259b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta this.radius = radius; 39359b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta this.useEvenSlices = useEvenSlices; 39459b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta this.interior = interior; 39559b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta setGeometryData(); 39659b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta setIndexData(); 39759b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta } 39859b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta 39959b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta public void read(JmeImporter e) throws IOException { 40059b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta super.read(e); 40159b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta InputCapsule capsule = e.getCapsule(this); 40259b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta zSamples = capsule.readInt("zSamples", 0); 40359b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta radialSamples = capsule.readInt("radialSamples", 0); 40459b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta radius = capsule.readFloat("radius", 0); 40559b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta useEvenSlices = capsule.readBoolean("useEvenSlices", false); 40659b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta textureMode = capsule.readEnum("textureMode", TextureMode.class, TextureMode.Original); 40759b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta interior = capsule.readBoolean("interior", false); 40859b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta } 40959b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta 41059b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta public void write(JmeExporter e) throws IOException { 41159b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta super.write(e); 41259b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta OutputCapsule capsule = e.getCapsule(this); 41359b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta capsule.write(zSamples, "zSamples", 0); 41459b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta capsule.write(radialSamples, "radialSamples", 0); 41559b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta capsule.write(radius, "radius", 0); 41659b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta capsule.write(useEvenSlices, "useEvenSlices", false); 41759b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta capsule.write(textureMode, "textureMode", TextureMode.Original); 41859b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta capsule.write(interior, "interior", false); 41959b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta } 42059b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta} 421