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 Bartapackage com.jme3.scene.plugins.blender.textures; 3359b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta 3459b2e6871c65f58fdad78cd7229c292f6a177578Scott Bartaimport com.jme3.bounding.BoundingBox; 3559b2e6871c65f58fdad78cd7229c292f6a177578Scott Bartaimport com.jme3.bounding.BoundingSphere; 3659b2e6871c65f58fdad78cd7229c292f6a177578Scott Bartaimport com.jme3.bounding.BoundingVolume; 3759b2e6871c65f58fdad78cd7229c292f6a177578Scott Bartaimport com.jme3.math.Vector2f; 3859b2e6871c65f58fdad78cd7229c292f6a177578Scott Bartaimport com.jme3.math.Vector3f; 3959b2e6871c65f58fdad78cd7229c292f6a177578Scott Bartaimport com.jme3.scene.Geometry; 4059b2e6871c65f58fdad78cd7229c292f6a177578Scott Bartaimport com.jme3.scene.Mesh; 4159b2e6871c65f58fdad78cd7229c292f6a177578Scott Bartaimport com.jme3.scene.VertexBuffer; 4259b2e6871c65f58fdad78cd7229c292f6a177578Scott Bartaimport com.jme3.scene.VertexBuffer.Format; 4359b2e6871c65f58fdad78cd7229c292f6a177578Scott Bartaimport com.jme3.scene.VertexBuffer.Usage; 4459b2e6871c65f58fdad78cd7229c292f6a177578Scott Bartaimport com.jme3.util.BufferUtils; 4559b2e6871c65f58fdad78cd7229c292f6a177578Scott Bartaimport java.nio.FloatBuffer; 4659b2e6871c65f58fdad78cd7229c292f6a177578Scott Bartaimport java.util.List; 4759b2e6871c65f58fdad78cd7229c292f6a177578Scott Bartaimport java.util.logging.Logger; 4859b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta 4959b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta/** 5059b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta * This class is used for UV coordinates generation. 5159b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta * @author Marcin Roguski (Kaelthas) 5259b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta */ 5359b2e6871c65f58fdad78cd7229c292f6a177578Scott Bartapublic class UVCoordinatesGenerator { 5459b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta private static final Logger LOGGER = Logger.getLogger(UVCoordinatesGenerator.class.getName()); 5559b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta 5659b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta // texture UV coordinates types 5759b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta public static final int TEXCO_ORCO = 1; 5859b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta public static final int TEXCO_REFL = 2; 5959b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta public static final int TEXCO_NORM = 4; 6059b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta public static final int TEXCO_GLOB = 8; 6159b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta public static final int TEXCO_UV = 16; 6259b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta public static final int TEXCO_OBJECT = 32; 6359b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta public static final int TEXCO_LAVECTOR = 64; 6459b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta public static final int TEXCO_VIEW = 128; 6559b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta public static final int TEXCO_STICKY = 256; 6659b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta public static final int TEXCO_OSA = 512; 6759b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta public static final int TEXCO_WINDOW = 1024; 6859b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta public static final int NEED_UV = 2048; 6959b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta public static final int TEXCO_TANGENT = 4096; 7059b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta // still stored in vertex->accum, 1 D 7159b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta public static final int TEXCO_PARTICLE_OR_STRAND = 8192; // strand is used 7259b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta public static final int TEXCO_STRESS = 16384; 7359b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta public static final int TEXCO_SPEED = 32768; 7459b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta 7559b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta // 2D texture mapping (projection) 7659b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta public static final int PROJECTION_FLAT = 0; 7759b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta public static final int PROJECTION_CUBE = 1; 7859b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta public static final int PROJECTION_TUBE = 2; 7959b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta public static final int PROJECTION_SPHERE = 3; 8059b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta 8159b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta /** 8259b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta * This method generates UV coordinates for the given mesh. 8359b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta * IMPORTANT! This method assumes that all geometries represent one node. 8459b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta * Each containing mesh with separate material. 8559b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta * So all meshes have the same reference to vertex table which stores all their vertices. 8659b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta * @param texco 8759b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta * texture coordinates type 8859b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta * @param projection 8959b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta * the projection type for 2D textures 9059b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta * @param textureDimension 9159b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta * the dimension of the texture (only 2D and 3D) 9259b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta * @param coordinatesSwappingIndexes 9359b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta * an array that tells how UV-coordinates need to be swapped 9459b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta * @param geometries 9559b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta * a list of geometries the UV coordinates will be applied to 9659b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta * @return created UV-coordinates buffer 9759b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta */ 9859b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta public static VertexBuffer generateUVCoordinates(int texco, int projection, int textureDimension, int[] coordinatesSwappingIndexes, List<Geometry> geometries) { 9959b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta if (textureDimension != 2 && textureDimension != 3) { 10059b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta throw new IllegalStateException("Unsupported texture dimension: " + textureDimension); 10159b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta } 10259b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta 10359b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta VertexBuffer result = new VertexBuffer(VertexBuffer.Type.TexCoord); 10459b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta Mesh mesh = geometries.get(0).getMesh(); 10559b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta BoundingBox bb = UVCoordinatesGenerator.getBoundingBox(geometries); 10659b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta float[] inputData = null;// positions, normals, reflection vectors, etc. 10759b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta 10859b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta switch (texco) { 10959b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta case TEXCO_ORCO: 11059b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta inputData = BufferUtils.getFloatArray(mesh.getFloatBuffer(VertexBuffer.Type.Position)); 11159b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta break; 11259b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta case TEXCO_UV: 11359b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta FloatBuffer uvCoordinatesBuffer = BufferUtils.createFloatBuffer(mesh.getVertexCount() * textureDimension); 11459b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta Vector2f[] data = new Vector2f[] { new Vector2f(0, 1), new Vector2f(0, 0), new Vector2f(1, 0) }; 11559b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta for (int i = 0; i < mesh.getVertexCount(); ++i) { 11659b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta Vector2f uv = data[i % 3]; 11759b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta uvCoordinatesBuffer.put(uv.x); 11859b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta uvCoordinatesBuffer.put(uv.y); 11959b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta if(textureDimension == 3) { 12059b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta uvCoordinatesBuffer.put(0); 12159b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta } 12259b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta } 12359b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta result.setupData(Usage.Static, textureDimension, Format.Float, uvCoordinatesBuffer); 12459b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta break; 12559b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta case TEXCO_NORM: 12659b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta inputData = BufferUtils.getFloatArray(mesh.getFloatBuffer(VertexBuffer.Type.Normal)); 12759b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta break; 12859b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta case TEXCO_REFL: 12959b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta case TEXCO_GLOB: 13059b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta case TEXCO_TANGENT: 13159b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta case TEXCO_STRESS: 13259b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta case TEXCO_LAVECTOR: 13359b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta case TEXCO_OBJECT: 13459b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta case TEXCO_OSA: 13559b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta case TEXCO_PARTICLE_OR_STRAND: 13659b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta case TEXCO_SPEED: 13759b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta case TEXCO_STICKY: 13859b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta case TEXCO_VIEW: 13959b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta case TEXCO_WINDOW: 14059b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta LOGGER.warning("Texture coordinates type not currently supported: " + texco); 14159b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta break; 14259b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta default: 14359b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta throw new IllegalStateException("Unknown texture coordinates value: " + texco); 14459b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta } 14559b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta 14659b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta if (inputData != null) {// make calculations 14759b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta if (textureDimension == 2) { 14859b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta switch (projection) { 14959b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta case PROJECTION_FLAT: 15059b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta inputData = UVProjectionGenerator.flatProjection(mesh, bb); 15159b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta break; 15259b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta case PROJECTION_CUBE: 15359b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta inputData = UVProjectionGenerator.cubeProjection(mesh, bb); 15459b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta break; 15559b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta case PROJECTION_TUBE: 15659b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta BoundingTube bt = UVCoordinatesGenerator.getBoundingTube(geometries); 15759b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta inputData = UVProjectionGenerator.tubeProjection(mesh, bt); 15859b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta break; 15959b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta case PROJECTION_SPHERE: 16059b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta BoundingSphere bs = UVCoordinatesGenerator.getBoundingSphere(geometries); 16159b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta inputData = UVProjectionGenerator.sphereProjection(mesh, bs); 16259b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta break; 16359b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta default: 16459b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta throw new IllegalStateException("Unknown projection type: " + projection); 16559b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta } 16659b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta } else { 16759b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta Vector3f min = bb.getMin(null); 16859b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta float[] uvCoordsResults = new float[4];//used for coordinates swapping 16959b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta float[] ext = new float[] { bb.getXExtent() * 2, bb.getYExtent() * 2, bb.getZExtent() * 2 }; 17059b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta 17159b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta // now transform the coordinates so that they are in the range of <0; 1> 17259b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta for (int i = 0; i < inputData.length; i += 3) { 17359b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta uvCoordsResults[1] = (inputData[i] - min.x) / ext[0]; 17459b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta uvCoordsResults[2] = (inputData[i + 1] - min.y) / ext[1]; 17559b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta uvCoordsResults[3] = (inputData[i + 2] - min.z) / ext[2]; 17659b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta 17759b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta 17859b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta inputData[i] = uvCoordsResults[coordinatesSwappingIndexes[0]]; 17959b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta inputData[i + 1] = uvCoordsResults[coordinatesSwappingIndexes[1]]; 18059b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta inputData[i + 2] = uvCoordsResults[coordinatesSwappingIndexes[2]]; 18159b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta } 18259b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta } 18359b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta result.setupData(Usage.Static, textureDimension, Format.Float, BufferUtils.createFloatBuffer(inputData)); 18459b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta } 18559b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta 18659b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta // each mesh will have the same coordinates 18759b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta for (Geometry geometry : geometries) { 18859b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta mesh = geometry.getMesh(); 18959b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta mesh.clearBuffer(VertexBuffer.Type.TexCoord);// in case there are coordinates already set 19059b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta mesh.setBuffer(result); 19159b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta } 19259b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta 19359b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta return result; 19459b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta } 19559b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta 19659b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta /** 19759b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta * This method returns the bounding box of the given geometries. 19859b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta * @param geometries 19959b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta * the list of geometries 20059b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta * @return bounding box of the given geometries 20159b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta */ 20259b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta /* package */static BoundingBox getBoundingBox(List<Geometry> geometries) { 20359b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta BoundingBox result = null; 20459b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta for (Geometry geometry : geometries) { 20559b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta BoundingBox bb = UVCoordinatesGenerator.getBoundingBox(geometry.getMesh()); 20659b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta if (result == null) { 20759b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta result = bb; 20859b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta } else { 20959b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta result.merge(bb); 21059b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta } 21159b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta } 21259b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta return result; 21359b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta } 21459b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta 21559b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta /** 21659b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta * This method returns the bounding box of the given mesh. 21759b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta * @param mesh 21859b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta * the mesh 21959b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta * @return bounding box of the given mesh 22059b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta */ 22159b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta /* package */static BoundingBox getBoundingBox(Mesh mesh) { 22259b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta mesh.updateBound(); 22359b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta BoundingVolume bv = mesh.getBound(); 22459b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta if (bv instanceof BoundingBox) { 22559b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta return (BoundingBox) bv; 22659b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta } else if (bv instanceof BoundingSphere) { 22759b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta BoundingSphere bs = (BoundingSphere) bv; 22859b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta float r = bs.getRadius(); 22959b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta return new BoundingBox(bs.getCenter(), r, r, r); 23059b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta } else { 23159b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta throw new IllegalStateException("Unknown bounding volume type: " + bv.getClass().getName()); 23259b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta } 23359b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta } 23459b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta 23559b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta /** 23659b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta * This method returns the bounding sphere of the given geometries. 23759b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta * @param geometries 23859b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta * the list of geometries 23959b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta * @return bounding sphere of the given geometries 24059b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta */ 24159b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta /* package */static BoundingSphere getBoundingSphere(List<Geometry> geometries) { 24259b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta BoundingSphere result = null; 24359b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta for (Geometry geometry : geometries) { 24459b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta BoundingSphere bs = UVCoordinatesGenerator.getBoundingSphere(geometry.getMesh()); 24559b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta if (result == null) { 24659b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta result = bs; 24759b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta } else { 24859b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta result.merge(bs); 24959b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta } 25059b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta } 25159b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta return result; 25259b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta } 25359b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta 25459b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta /** 25559b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta * This method returns the bounding sphere of the given mesh. 25659b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta * @param mesh 25759b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta * the mesh 25859b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta * @return bounding sphere of the given mesh 25959b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta */ 26059b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta /* package */static BoundingSphere getBoundingSphere(Mesh mesh) { 26159b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta mesh.updateBound(); 26259b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta BoundingVolume bv = mesh.getBound(); 26359b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta if (bv instanceof BoundingBox) { 26459b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta BoundingBox bb = (BoundingBox) bv; 26559b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta float r = Math.max(bb.getXExtent(), bb.getYExtent()); 26659b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta r = Math.max(r, bb.getZExtent()); 26759b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta return new BoundingSphere(r, bb.getCenter()); 26859b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta } else if (bv instanceof BoundingSphere) { 26959b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta return (BoundingSphere) bv; 27059b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta } else { 27159b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta throw new IllegalStateException("Unknown bounding volume type: " + bv.getClass().getName()); 27259b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta } 27359b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta } 27459b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta 27559b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta /** 27659b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta * This method returns the bounding tube of the given mesh. 27759b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta * @param mesh 27859b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta * the mesh 27959b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta * @return bounding tube of the given mesh 28059b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta */ 28159b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta /* package */static BoundingTube getBoundingTube(Mesh mesh) { 28259b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta Vector3f center = new Vector3f(); 28359b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta float maxx = -Float.MAX_VALUE, minx = Float.MAX_VALUE; 28459b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta float maxy = -Float.MAX_VALUE, miny = Float.MAX_VALUE; 28559b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta float maxz = -Float.MAX_VALUE, minz = Float.MAX_VALUE; 28659b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta 28759b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta FloatBuffer positions = mesh.getFloatBuffer(VertexBuffer.Type.Position); 28859b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta int limit = positions.limit(); 28959b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta for (int i = 0; i < limit; i += 3) { 29059b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta float x = positions.get(i); 29159b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta float y = positions.get(i + 1); 29259b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta float z = positions.get(i + 2); 29359b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta center.addLocal(x, y, z); 29459b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta maxx = x > maxx ? x : maxx; 29559b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta minx = x < minx ? x : minx; 29659b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta maxy = y > maxy ? y : maxy; 29759b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta miny = y < miny ? y : miny; 29859b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta maxz = z > maxz ? z : maxz; 29959b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta minz = z < minz ? z : minz; 30059b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta } 30159b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta center.divideLocal(limit / 3); 30259b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta 30359b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta float radius = Math.max(maxx - minx, maxy - miny) * 0.5f; 30459b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta return new BoundingTube(radius, maxz - minz, center); 30559b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta } 30659b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta 30759b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta /** 30859b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta * This method returns the bounding tube of the given geometries. 30959b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta * @param geometries 31059b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta * the list of geometries 31159b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta * @return bounding tube of the given geometries 31259b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta */ 31359b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta /* package */static BoundingTube getBoundingTube(List<Geometry> geometries) { 31459b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta BoundingTube result = null; 31559b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta for (Geometry geometry : geometries) { 31659b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta BoundingTube bt = UVCoordinatesGenerator.getBoundingTube(geometry.getMesh()); 31759b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta if (result == null) { 31859b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta result = bt; 31959b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta } else { 32059b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta result.merge(bt); 32159b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta } 32259b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta } 32359b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta return result; 32459b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta } 32559b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta 32659b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta /** 32759b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta * A very simple bounding tube. Id holds only the basic data bout the bounding tube 32859b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta * and does not provide full functionality of a BoundingVolume. 32959b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta * Should be replaced with a bounding tube that extends the BoundingVolume if it is ever created. 33059b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta * @author Marcin Roguski (Kaelthas) 33159b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta */ 33259b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta /* package */static class BoundingTube { 33359b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta private float radius; 33459b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta private float height; 33559b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta private Vector3f center; 33659b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta 33759b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta /** 33859b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta * Constructor creates the tube with the given params. 33959b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta * @param radius 34059b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta * the radius of the tube 34159b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta * @param height 34259b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta * the height of the tube 34359b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta * @param center 34459b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta * the center of the tube 34559b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta */ 34659b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta public BoundingTube(float radius, float height, Vector3f center) { 34759b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta this.radius = radius; 34859b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta this.height = height; 34959b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta this.center = center; 35059b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta } 35159b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta 35259b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta /** 35359b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta * This method merges two bounding tubes. 35459b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta * @param boundingTube 35559b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta * bounding tube to be merged woth the current one 35659b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta * @return new instance of bounding tube representing the tubes' merge 35759b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta */ 35859b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta public BoundingTube merge(BoundingTube boundingTube) { 35959b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta // get tubes (tube1.radius >= tube2.radius) 36059b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta BoundingTube tube1, tube2; 36159b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta if (this.radius >= boundingTube.radius) { 36259b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta tube1 = this; 36359b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta tube2 = boundingTube; 36459b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta } else { 36559b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta tube1 = boundingTube; 36659b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta tube2 = this; 36759b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta } 36859b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta float r1 = tube1.radius; 36959b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta float r2 = tube2.radius; 37059b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta 37159b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta float minZ = Math.min(tube1.center.z - tube1.height * 0.5f, tube2.center.z - tube2.height * 0.5f); 37259b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta float maxZ = Math.max(tube1.center.z + tube1.height * 0.5f, tube2.center.z + tube2.height * 0.5f); 37359b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta float height = maxZ - minZ; 37459b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta Vector3f distance = tube2.center.subtract(tube1.center); 37559b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta Vector3f center = tube1.center.add(distance.mult(0.5f)); 37659b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta distance.z = 0;// projecting this vector on XY plane 37759b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta float d = distance.length(); 37859b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta // d <= r1 - r2: tube2 is inside tube1 or touches tube1 from the inside 37959b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta // d > r1 - r2: tube2 is outside or touches tube1 or crosses tube1 38059b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta float radius = d <= r1 - r2 ? tube1.radius : (d + r1 + r2) * 0.5f; 38159b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta return new BoundingTube(radius, height, center); 38259b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta } 38359b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta 38459b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta /** 38559b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta * This method returns the radius of the tube. 38659b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta * @return the radius of the tube 38759b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta */ 38859b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta public float getRadius() { 38959b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta return radius; 39059b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta } 39159b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta 39259b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta /** 39359b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta * This method returns the height of the tube. 39459b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta * @return the height of the tube 39559b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta */ 39659b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta public float getHeight() { 39759b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta return height; 39859b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta } 39959b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta 40059b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta /** 40159b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta * This method returns the center of the tube. 40259b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta * @return the center of the tube 40359b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta */ 40459b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta public Vector3f getCenter() { 40559b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta return center; 40659b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta } 40759b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta } 40859b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta} 409