/*
* Copyright (c) 2009-2012 jMonkeyEngine
* 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 'jMonkeyEngine' 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,
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package com.jme3.scene.plugins.blender.textures;
import java.awt.geom.AffineTransform;
import java.nio.ByteBuffer;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.Map.Entry;
import java.util.logging.Level;
import java.util.logging.Logger;
import com.jme3.asset.AssetInfo;
import com.jme3.asset.AssetManager;
import com.jme3.asset.AssetNotFoundException;
import com.jme3.asset.BlenderKey;
import com.jme3.asset.GeneratedTextureKey;
import com.jme3.asset.TextureKey;
import com.jme3.math.Vector2f;
import com.jme3.scene.VertexBuffer.Type;
import com.jme3.scene.plugins.blender.AbstractBlenderHelper;
import com.jme3.scene.plugins.blender.BlenderContext;
import com.jme3.scene.plugins.blender.BlenderContext.LoadedFeatureDataType;
import com.jme3.scene.plugins.blender.file.BlenderFileException;
import com.jme3.scene.plugins.blender.file.DynamicArray;
import com.jme3.scene.plugins.blender.file.FileBlockHeader;
import com.jme3.scene.plugins.blender.file.Pointer;
import com.jme3.scene.plugins.blender.file.Structure;
import com.jme3.scene.plugins.blender.materials.MaterialContext;
import com.jme3.scene.plugins.blender.textures.UVCoordinatesGenerator.UVCoordinatesType;
import com.jme3.scene.plugins.blender.textures.blending.TextureBlender;
import com.jme3.scene.plugins.blender.textures.blending.TextureBlenderFactory;
import com.jme3.scene.plugins.blender.textures.generating.TextureGeneratorFactory;
import com.jme3.scene.plugins.blender.textures.io.PixelIOFactory;
import com.jme3.scene.plugins.blender.textures.io.PixelInputOutput;
import com.jme3.texture.Image;
import com.jme3.texture.Texture;
import com.jme3.texture.Texture.MinFilter;
import com.jme3.texture.Texture.WrapMode;
import com.jme3.texture.Texture2D;
import com.jme3.util.BufferUtils;
/**
* A class that is used in texture calculations.
*
* @author Marcin Roguski
*/
public class TextureHelper extends AbstractBlenderHelper {
private static final Logger LOGGER = Logger.getLogger(TextureHelper.class.getName());
// texture types
public static final int TEX_NONE = 0;
public static final int TEX_CLOUDS = 1;
public static final int TEX_WOOD = 2;
public static final int TEX_MARBLE = 3;
public static final int TEX_MAGIC = 4;
public static final int TEX_BLEND = 5;
public static final int TEX_STUCCI = 6;
public static final int TEX_NOISE = 7;
public static final int TEX_IMAGE = 8;
public static final int TEX_PLUGIN = 9;
public static final int TEX_ENVMAP = 10;
public static final int TEX_MUSGRAVE = 11;
public static final int TEX_VORONOI = 12;
public static final int TEX_DISTNOISE = 13;
public static final int TEX_POINTDENSITY = 14; // v. 25+
public static final int TEX_VOXELDATA = 15; // v. 25+
public static final int TEX_OCEAN = 16; // v. 26+
public static final Type[] TEXCOORD_TYPES = new Type[] { Type.TexCoord, Type.TexCoord2, Type.TexCoord3, Type.TexCoord4, Type.TexCoord5, Type.TexCoord6, Type.TexCoord7, Type.TexCoord8 };
private TextureGeneratorFactory textureGeneratorFactory = new TextureGeneratorFactory();
/**
* This constructor parses the given blender version and stores the result.
* It creates noise generator and texture generators.
*
* @param blenderVersion
* the version read from the blend file
* @param blenderContext
* the blender context
*/
public TextureHelper(String blenderVersion, BlenderContext blenderContext) {
super(blenderVersion, blenderContext);
}
/**
* This class returns a texture read from the file or from packed blender
* data. The returned texture has the name set to the value of its blender
* type.
*
* @param tex
* texture structure filled with data
* @param blenderContext
* the blender context
* @return the texture that can be used by JME engine
* @throws BlenderFileException
* this exception is thrown when the blend file structure is
* somehow invalid or corrupted
*/
public Texture getTexture(Structure tex, Structure mTex, BlenderContext blenderContext) throws BlenderFileException {
Texture result = (Texture) blenderContext.getLoadedFeature(tex.getOldMemoryAddress(), LoadedFeatureDataType.LOADED_FEATURE);
if (result != null) {
return result;
}
int type = ((Number) tex.getFieldValue("type")).intValue();
int imaflag = ((Number) tex.getFieldValue("imaflag")).intValue();
switch (type) {
case TEX_IMAGE:// (it is first because probably this will be most commonly used)
Pointer pImage = (Pointer) tex.getFieldValue("ima");
if (pImage.isNotNull()) {
Structure image = pImage.fetchData().get(0);
Texture loadedTexture = this.loadTexture(image, imaflag, blenderContext);
if (loadedTexture != null) {
result = loadedTexture;
this.applyColorbandAndColorFactors(tex, result.getImage(), blenderContext);
}
}
break;
case TEX_CLOUDS:
case TEX_WOOD:
case TEX_MARBLE:
case TEX_MAGIC:
case TEX_BLEND:
case TEX_STUCCI:
case TEX_NOISE:
case TEX_MUSGRAVE:
case TEX_VORONOI:
case TEX_DISTNOISE:
result = new GeneratedTexture(tex, mTex, textureGeneratorFactory.createTextureGenerator(type), blenderContext);
break;
case TEX_NONE:// No texture, do nothing
break;
case TEX_POINTDENSITY:
case TEX_VOXELDATA:
case TEX_PLUGIN:
case TEX_ENVMAP:
case TEX_OCEAN:
LOGGER.log(Level.WARNING, "Unsupported texture type: {0} for texture: {1}", new Object[] { type, tex.getName() });
break;
default:
throw new BlenderFileException("Unknown texture type: " + type + " for texture: " + tex.getName());
}
if (result != null) {
result.setName(tex.getName());
result.setWrap(WrapMode.Repeat);
// decide if the mipmaps will be generated
switch (blenderContext.getBlenderKey().getMipmapGenerationMethod()) {
case ALWAYS_GENERATE:
result.setMinFilter(MinFilter.Trilinear);
break;
case NEVER_GENERATE:
break;
case GENERATE_WHEN_NEEDED:
if ((imaflag & 0x04) != 0) {
result.setMinFilter(MinFilter.Trilinear);
}
break;
default:
throw new IllegalStateException("Unknown mipmap generation method: " + blenderContext.getBlenderKey().getMipmapGenerationMethod());
}
if (type != TEX_IMAGE) {// only generated textures should have this key
result.setKey(new GeneratedTextureKey(tex.getName()));
}
if (LOGGER.isLoggable(Level.FINE)) {
LOGGER.log(Level.FINE, "Adding texture {0} to the loaded features with OMA = {1}", new Object[] { result.getName(), tex.getOldMemoryAddress() });
}
blenderContext.addLoadedFeatures(tex.getOldMemoryAddress(), tex.getName(), tex, result);
}
return result;
}
/**
* This class returns a texture read from the file or from packed blender
* data.
*
* @param imageStructure
* image structure filled with data
* @param imaflag
* the image flag
* @param blenderContext
* the blender context
* @return the texture that can be used by JME engine
* @throws BlenderFileException
* this exception is thrown when the blend file structure is
* somehow invalid or corrupted
*/
protected Texture loadTexture(Structure imageStructure, int imaflag, BlenderContext blenderContext) throws BlenderFileException {
LOGGER.log(Level.FINE, "Fetching texture with OMA = {0}", imageStructure.getOldMemoryAddress());
Texture result = null;
Image im = (Image) blenderContext.getLoadedFeature(imageStructure.getOldMemoryAddress(), LoadedFeatureDataType.LOADED_FEATURE);
if (im == null) {
String texturePath = imageStructure.getFieldValue("name").toString();
Pointer pPackedFile = (Pointer) imageStructure.getFieldValue("packedfile");
if (pPackedFile.isNull()) {
LOGGER.log(Level.FINE, "Reading texture from file: {0}", texturePath);
result = this.loadImageFromFile(texturePath, imaflag, blenderContext);
} else {
LOGGER.fine("Packed texture. Reading directly from the blend file!");
Structure packedFile = pPackedFile.fetchData().get(0);
Pointer pData = (Pointer) packedFile.getFieldValue("data");
FileBlockHeader dataFileBlock = blenderContext.getFileBlock(pData.getOldMemoryAddress());
blenderContext.getInputStream().setPosition(dataFileBlock.getBlockPosition());
ImageLoader imageLoader = new ImageLoader();
// Should the texture be flipped? It works for sinbad ..
result = new Texture2D(imageLoader.loadImage(blenderContext.getInputStream(), dataFileBlock.getBlockPosition(), true));
}
} else {
result = new Texture2D(im);
}
return result;
}
/**
* This method creates the affine transform that is used to transform a
* triangle defined by one UV coordinates into a triangle defined by
* different UV's.
*
* @param source
* source UV coordinates
* @param dest
* target UV coordinates
* @param sourceSize
* the width and height of the source image
* @param targetSize
* the width and height of the target image
* @return affine transform to transform one triangle to another
*/
public AffineTransform createAffineTransform(Vector2f[] source, Vector2f[] dest, int[] sourceSize, int[] targetSize) {
float x11 = source[0].getX() * sourceSize[0];
float x12 = source[0].getY() * sourceSize[1];
float x21 = source[1].getX() * sourceSize[0];
float x22 = source[1].getY() * sourceSize[1];
float x31 = source[2].getX() * sourceSize[0];
float x32 = source[2].getY() * sourceSize[1];
float y11 = dest[0].getX() * targetSize[0];
float y12 = dest[0].getY() * targetSize[1];
float y21 = dest[1].getX() * targetSize[0];
float y22 = dest[1].getY() * targetSize[1];
float y31 = dest[2].getX() * targetSize[0];
float y32 = dest[2].getY() * targetSize[1];
float a1 = ((y11 - y21) * (x12 - x32) - (y11 - y31) * (x12 - x22)) / ((x11 - x21) * (x12 - x32) - (x11 - x31) * (x12 - x22));
float a2 = ((y11 - y21) * (x11 - x31) - (y11 - y31) * (x11 - x21)) / ((x12 - x22) * (x11 - x31) - (x12 - x32) * (x11 - x21));
float a3 = y11 - a1 * x11 - a2 * x12;
float a4 = ((y12 - y22) * (x12 - x32) - (y12 - y32) * (x12 - x22)) / ((x11 - x21) * (x12 - x32) - (x11 - x31) * (x12 - x22));
float a5 = ((y12 - y22) * (x11 - x31) - (y12 - y32) * (x11 - x21)) / ((x12 - x22) * (x11 - x31) - (x12 - x32) * (x11 - x21));
float a6 = y12 - a4 * x11 - a5 * x12;
return new AffineTransform(a1, a4, a2, a5, a3, a6);
}
/**
* This method returns the proper pixel position on the image.
*
* @param pos
* the relative position (value of range <0, 1> (both inclusive))
* @param size
* the size of the line the pixel lies on (width, heigth or
* depth)
* @return the integer index of the pixel on the line of the specified width
*/
public int getPixelPosition(float pos, int size) {
float pixelWidth = 1 / (float) size;
pos *= size;
int result = (int) pos;
// here is where we repair floating point operations errors :)
if (Math.abs(result - pos) > pixelWidth) {
++result;
}
return result;
}
/**
* This method returns subimage of the give image. The subimage is
* constrained by the rectangle coordinates. The source image is unchanged.
*
* @param image
* the image to be subimaged
* @param minX
* minimum X position
* @param minY
* minimum Y position
* @param maxX
* maximum X position
* @param maxY
* maximum Y position
* @return a part of the given image
*/
public Image getSubimage(Image image, int minX, int minY, int maxX, int maxY) {
if (minY > maxY) {
throw new IllegalArgumentException("Minimum Y value is higher than maximum Y value!");
}
if (minX > maxX) {
throw new IllegalArgumentException("Minimum Y value is higher than maximum Y value!");
}
if (image.getData().size() > 1) {
throw new IllegalArgumentException("Only flat images are allowed for subimage operation!");
}
if (image.getMipMapSizes() != null) {
LOGGER.warning("Subimaging image with mipmaps is not yet supported!");
}
int width = maxX - minX;
int height = maxY - minY;
ByteBuffer data = BufferUtils.createByteBuffer(width * height * (image.getFormat().getBitsPerPixel() >> 3));
Image result = new Image(image.getFormat(), width, height, data);
PixelInputOutput pixelIO = PixelIOFactory.getPixelIO(image.getFormat());
TexturePixel pixel = new TexturePixel();
for (int x = minX; x < maxX; ++x) {
for (int y = minY; y < maxY; ++y) {
pixelIO.read(image, 0, pixel, x, y);
pixelIO.write(result, 0, pixel, x - minX, y - minY);
}
}
return result;
}
/**
* This method applies the colorband and color factors to image type
* textures. If there is no colorband defined for the texture or the color
* factors are all equal to 1.0f then no changes are made.
*
* @param tex
* the texture structure
* @param image
* the image that will be altered if necessary
* @param blenderContext
* the blender context
*/
private void applyColorbandAndColorFactors(Structure tex, Image image, BlenderContext blenderContext) {
float rfac = ((Number) tex.getFieldValue("rfac")).floatValue();
float gfac = ((Number) tex.getFieldValue("gfac")).floatValue();
float bfac = ((Number) tex.getFieldValue("bfac")).floatValue();
float[][] colorBand = new ColorBand(tex, blenderContext).computeValues();
int depth = image.getDepth() == 0 ? 1 : image.getDepth();
if (colorBand != null) {
TexturePixel pixel = new TexturePixel();
PixelInputOutput imageIO = PixelIOFactory.getPixelIO(image.getFormat());
for (int layerIndex = 0; layerIndex < depth; ++layerIndex) {
for (int x = 0; x < image.getWidth(); ++x) {
for (int y = 0; y < image.getHeight(); ++y) {
imageIO.read(image, layerIndex, pixel, x, y);
int colorbandIndex = (int) (pixel.alpha * 1000.0f);
pixel.red = colorBand[colorbandIndex][0] * rfac;
pixel.green = colorBand[colorbandIndex][1] * gfac;
pixel.blue = colorBand[colorbandIndex][2] * bfac;
pixel.alpha = colorBand[colorbandIndex][3];
imageIO.write(image, layerIndex, pixel, x, y);
}
}
}
} else if (rfac != 1.0f || gfac != 1.0f || bfac != 1.0f) {
TexturePixel pixel = new TexturePixel();
PixelInputOutput imageIO = PixelIOFactory.getPixelIO(image.getFormat());
for (int layerIndex = 0; layerIndex < depth; ++layerIndex) {
for (int x = 0; x < image.getWidth(); ++x) {
for (int y = 0; y < image.getHeight(); ++y) {
imageIO.read(image, layerIndex, pixel, x, y);
pixel.red *= rfac;
pixel.green *= gfac;
pixel.blue *= bfac;
imageIO.write(image, layerIndex, pixel, x, y);
}
}
}
}
}
/**
* This method loads the textre from outside the blend file using the
* AssetManager that the blend file was loaded with. It returns a texture
* with a full assetKey that references the original texture so it later
* doesn't need to ba packed when the model data is serialized. It searches
* the AssetManager for the full path if the model file is a relative path
* and will attempt to truncate the path if it is an absolute file path
* until the path can be found in the AssetManager. If the texture can not
* be found, it will issue a load attempt for the initial path anyway so the
* failed load can be reported by the AssetManagers callback methods for
* failed assets.
*
* @param name
* the path to the image
* @param imaflag
* the image flag
* @param blenderContext
* the blender context
* @return the loaded image or null if the image cannot be found
*/
protected Texture loadImageFromFile(String name, int imaflag, BlenderContext blenderContext) {
if (!name.contains(".")) {
return null; // no extension means not a valid image
}
// decide if the mipmaps will be generated
boolean generateMipmaps = false;
switch (blenderContext.getBlenderKey().getMipmapGenerationMethod()) {
case ALWAYS_GENERATE:
generateMipmaps = true;
break;
case NEVER_GENERATE:
break;
case GENERATE_WHEN_NEEDED:
generateMipmaps = (imaflag & 0x04) != 0;
break;
default:
throw new IllegalStateException("Unknown mipmap generation method: " + blenderContext.getBlenderKey().getMipmapGenerationMethod());
}
AssetManager assetManager = blenderContext.getAssetManager();
name = name.replace('\\', '/');
Texture result = null;
if (name.startsWith("//")) {
// This is a relative path, so try to find it relative to the .blend file
String relativePath = name.substring(2);
// Augument the path with blender key path
BlenderKey blenderKey = blenderContext.getBlenderKey();
int idx = blenderKey.getName().lastIndexOf('/');
String blenderAssetFolder = blenderKey.getName().substring(0, idx != -1 ? idx : 0);
String absoluteName = blenderAssetFolder + '/' + relativePath;
// Directly try to load texture so AssetManager can report missing textures
try {
TextureKey key = new TextureKey(absoluteName);
key.setAsCube(false);
key.setFlipY(true);
key.setGenerateMips(generateMipmaps);
result = assetManager.loadTexture(key);
result.setKey(key);
} catch (AssetNotFoundException e) {
LOGGER.fine(e.getLocalizedMessage());
}
} else {
// This is a full path, try to truncate it until the file can be found
// this works as the assetManager root is most probably a part of the
// image path. E.g. AssetManager has a locator at c:/Files/ and the
// texture path is c:/Files/Textures/Models/Image.jpg.
// For this we create a list with every possible full path name from
// the asset name to the root. Image.jpg, Models/Image.jpg,
// Textures/Models/Image.jpg (bingo) etc.
List<String> assetNames = new ArrayList<String>();
String[] paths = name.split("\\/");
StringBuilder sb = new StringBuilder(paths[paths.length - 1]);// the asset name
assetNames.add(paths[paths.length - 1]);
for (int i = paths.length - 2; i >= 0; --i) {
sb.insert(0, '/');
sb.insert(0, paths[i]);
assetNames.add(0, sb.toString());
}
// Now try to locate the asset
for (String assetName : assetNames) {
try {
TextureKey key = new TextureKey(assetName);
key.setAsCube(false);
key.setFlipY(true);
key.setGenerateMips(generateMipmaps);
AssetInfo info = assetManager.locateAsset(key);
if (info != null) {
Texture texture = assetManager.loadTexture(key);
result = texture;
// Set key explicitly here if other ways fail
texture.setKey(key);
// If texture is found return it;
return result;
}
} catch (AssetNotFoundException e) {
LOGGER.fine(e.getLocalizedMessage());
}
}
// The asset was not found in the loop above, call loadTexture with
// the original path once anyway so that the AssetManager can report
// the missing asset to subsystems.
try {
TextureKey key = new TextureKey(name);
assetManager.loadTexture(key);
} catch (AssetNotFoundException e) {
LOGGER.fine(e.getLocalizedMessage());
}
}
return result;
}
@SuppressWarnings("unchecked")
public List<CombinedTexture> readTextureData(Structure structure, float[] diffuseColorArray, boolean skyTexture) throws BlenderFileException {
DynamicArray<Pointer> mtexsArray = (DynamicArray<Pointer>) structure.getFieldValue("mtex");
int separatedTextures = skyTexture ? 0 : ((Number) structure.getFieldValue("septex")).intValue();
List<TextureData> texturesList = new ArrayList<TextureData>();
for (int i = 0; i < mtexsArray.getTotalSize(); ++i) {
Pointer p = mtexsArray.get(i);
if (p.isNotNull() && (separatedTextures & 1 << i) == 0) {
TextureData textureData = new TextureData();
textureData.mtex = p.fetchData().get(0);
textureData.uvCoordinatesType = skyTexture ? UVCoordinatesType.TEXCO_ORCO.blenderValue : ((Number) textureData.mtex.getFieldValue("texco")).intValue();
textureData.projectionType = ((Number) textureData.mtex.getFieldValue("mapping")).intValue();
textureData.uvCoordinatesName = textureData.mtex.getFieldValue("uvName").toString();
if (textureData.uvCoordinatesName != null && textureData.uvCoordinatesName.trim().length() == 0) {
textureData.uvCoordinatesName = null;
}
Pointer pTex = (Pointer) textureData.mtex.getFieldValue("tex");
if (pTex.isNotNull()) {
Structure tex = pTex.fetchData().get(0);
textureData.textureStructure = tex;
texturesList.add(textureData);
}
}
}
LOGGER.info("Loading model's textures.");
List<CombinedTexture> loadedTextures = new ArrayList<CombinedTexture>();
if (blenderContext.getBlenderKey().isOptimiseTextures()) {
LOGGER.fine("Optimising the useage of model's textures.");
Map<Number, List<TextureData>> textureDataMap = this.sortTextures(texturesList);
for (Entry<Number, List<TextureData>> entry : textureDataMap.entrySet()) {
if (entry.getValue().size() > 0) {
CombinedTexture combinedTexture = new CombinedTexture(entry.getKey().intValue(), !skyTexture);
for (TextureData textureData : entry.getValue()) {
int texflag = ((Number) textureData.mtex.getFieldValue("texflag")).intValue();
boolean negateTexture = (texflag & 0x04) != 0;
Texture texture = this.getTexture(textureData.textureStructure, textureData.mtex, blenderContext);
if (texture != null) {
int blendType = ((Number) textureData.mtex.getFieldValue("blendtype")).intValue();
float[] color = new float[] { ((Number) textureData.mtex.getFieldValue("r")).floatValue(), ((Number) textureData.mtex.getFieldValue("g")).floatValue(), ((Number) textureData.mtex.getFieldValue("b")).floatValue() };
float colfac = ((Number) textureData.mtex.getFieldValue("colfac")).floatValue();
TextureBlender textureBlender = TextureBlenderFactory.createTextureBlender(texture.getImage().getFormat(), texflag, negateTexture, blendType, diffuseColorArray, color, colfac);
combinedTexture.add(texture, textureBlender, textureData.uvCoordinatesType, textureData.projectionType, textureData.textureStructure, textureData.uvCoordinatesName, blenderContext);
}
}
if (combinedTexture.getTexturesCount() > 0) {
loadedTextures.add(combinedTexture);
}
}
}
} else {
LOGGER.fine("No textures optimisation applied.");
int[] mappings = new int[] { MaterialContext.MTEX_COL, MaterialContext.MTEX_NOR, MaterialContext.MTEX_EMIT, MaterialContext.MTEX_SPEC, MaterialContext.MTEX_ALPHA, MaterialContext.MTEX_AMB };
for (TextureData textureData : texturesList) {
Texture texture = this.getTexture(textureData.textureStructure, textureData.mtex, blenderContext);
if (texture != null) {
Number mapto = (Number) textureData.mtex.getFieldValue("mapto");
int texflag = ((Number) textureData.mtex.getFieldValue("texflag")).intValue();
boolean negateTexture = (texflag & 0x04) != 0;
for (int i = 0; i < mappings.length; ++i) {
if ((mappings[i] & mapto.intValue()) != 0) {
CombinedTexture combinedTexture = new CombinedTexture(mappings[i], !skyTexture);
int blendType = ((Number) textureData.mtex.getFieldValue("blendtype")).intValue();
float[] color = new float[] { ((Number) textureData.mtex.getFieldValue("r")).floatValue(), ((Number) textureData.mtex.getFieldValue("g")).floatValue(), ((Number) textureData.mtex.getFieldValue("b")).floatValue() };
float colfac = ((Number) textureData.mtex.getFieldValue("colfac")).floatValue();
TextureBlender textureBlender = TextureBlenderFactory.createTextureBlender(texture.getImage().getFormat(), texflag, negateTexture, blendType, diffuseColorArray, color, colfac);
combinedTexture.add(texture, textureBlender, textureData.uvCoordinatesType, textureData.projectionType, textureData.textureStructure, textureData.uvCoordinatesName, blenderContext);
if (combinedTexture.getTexturesCount() > 0) {// the added texture might not have been accepted (if for example loading generated textures is disabled)
loadedTextures.add(combinedTexture);
}
}
}
}
}
}
return loadedTextures;
}
/**
* This method sorts the textures by their mapping type. In each group only
* textures of one type are put (either two- or three-dimensional).
*
* @return a map with sorted textures
*/
private Map<Number, List<TextureData>> sortTextures(List<TextureData> textures) {
int[] mappings = new int[] { MaterialContext.MTEX_COL, MaterialContext.MTEX_NOR, MaterialContext.MTEX_EMIT, MaterialContext.MTEX_SPEC, MaterialContext.MTEX_ALPHA, MaterialContext.MTEX_AMB };
Map<Number, List<TextureData>> result = new HashMap<Number, List<TextureData>>();
for (TextureData data : textures) {
Number mapto = (Number) data.mtex.getFieldValue("mapto");
for (int i = 0; i < mappings.length; ++i) {
if ((mappings[i] & mapto.intValue()) != 0) {
List<TextureData> datas = result.get(mappings[i]);
if (datas == null) {
datas = new ArrayList<TextureData>();
result.put(mappings[i], datas);
}
datas.add(data);
}
}
}
return result;
}
private static class TextureData {
public Structure mtex;
public Structure textureStructure;
public int uvCoordinatesType;
public int projectionType;
/** The name of the user's UV coordinates that are used for this texture. */
public String uvCoordinatesName;
}
}