Examples with Face com.jme3.scene.plugins.blender.meshes.Face used on opensource projects

Example 16 with Face

use of com.jme3.scene.plugins.blender.meshes.Face in project jmonkeyengine by jMonkeyEngine.

the class MikkTSpaceImpl method setTSpaceBasic.

@Override
public void setTSpaceBasic(float[] tangent, float sign, int face, int vert) {
    int vertIndex = getIndex(face, vert);
    VertexBuffer tangentBuffer = mesh.getBuffer(VertexBuffer.Type.Tangent);
    FloatBuffer tan = (FloatBuffer) tangentBuffer.getData();
    tan.position(vertIndex * 4);
    tan.put(tangent);
    tan.put(sign);
    tan.rewind();
    tangentBuffer.setUpdateNeeded();
}

Example 17 with Face

use of com.jme3.scene.plugins.blender.meshes.Face in project jmonkeyengine by jMonkeyEngine.

the class MikkTSpaceImpl method getPosition.

@Override
public void getPosition(float[] posOut, int face, int vert) {
    int vertIndex = getIndex(face, vert);
    VertexBuffer position = mesh.getBuffer(VertexBuffer.Type.Position);
    FloatBuffer pos = (FloatBuffer) position.getData();
    pos.position(vertIndex * 3);
    posOut[0] = pos.get();
    posOut[1] = pos.get();
    posOut[2] = pos.get();
}

Example 18 with Face

use of com.jme3.scene.plugins.blender.meshes.Face in project jmonkeyengine by jMonkeyEngine.

the class EnvMapUtils method generateIrradianceMap.

/**
     * Generates the Irradiance map (used for image based difuse lighting) from
     * Spherical Harmonics coefficients previously computed with
     * {@link EnvMapUtils#getSphericalHarmonicsCoefficents(com.jme3.texture.TextureCubeMap)}
     * Note that the output cube map is in RGBA8 format.
     *
     * @param shCoeffs the SH coeffs
     * @param targetMapSize the size of the irradiance map to generate
     * @param fixSeamsMethod the method to fix seams
     * @param store
     * @return The irradiance cube map for the given coefficients
     */
public static TextureCubeMap generateIrradianceMap(Vector3f[] shCoeffs, int targetMapSize, FixSeamsMethod fixSeamsMethod, TextureCubeMap store) {
    TextureCubeMap irrCubeMap = store;
    if (irrCubeMap == null) {
        irrCubeMap = new TextureCubeMap(targetMapSize, targetMapSize, Image.Format.RGB16F);
        irrCubeMap.setMagFilter(Texture.MagFilter.Bilinear);
        irrCubeMap.setMinFilter(Texture.MinFilter.BilinearNoMipMaps);
        irrCubeMap.getImage().setColorSpace(ColorSpace.Linear);
    }
    for (int i = 0; i < 6; i++) {
        ByteBuffer buf = BufferUtils.createByteBuffer(targetMapSize * targetMapSize * irrCubeMap.getImage().getFormat().getBitsPerPixel() / 8);
        irrCubeMap.getImage().setData(i, buf);
    }
    Vector3f texelVect = new Vector3f();
    ColorRGBA color = new ColorRGBA(ColorRGBA.Black);
    float[] shDir = new float[9];
    CubeMapWrapper envMapWriter = new CubeMapWrapper(irrCubeMap);
    for (int face = 0; face < 6; face++) {
        for (int y = 0; y < targetMapSize; y++) {
            for (int x = 0; x < targetMapSize; x++) {
                getVectorFromCubemapFaceTexCoord(x, y, targetMapSize, face, texelVect, fixSeamsMethod);
                evalShBasis(texelVect, shDir);
                color.set(0, 0, 0, 0);
                for (int i = 0; i < NUM_SH_COEFFICIENT; i++) {
                    color.set(color.r + shCoeffs[i].x * shDir[i] * shBandFactor[i], color.g + shCoeffs[i].y * shDir[i] * shBandFactor[i], color.b + shCoeffs[i].z * shDir[i] * shBandFactor[i], 1.0f);
                }
                //clamping the color because very low value close to zero produce artifacts
                color.r = Math.max(0.0001f, color.r);
                color.g = Math.max(0.0001f, color.g);
                color.b = Math.max(0.0001f, color.b);
                envMapWriter.setPixel(x, y, face, color);
            }
        }
    }
    return irrCubeMap;
}

Example 19 with Face

use of com.jme3.scene.plugins.blender.meshes.Face in project jmonkeyengine by jMonkeyEngine.

the class EnvMapUtils method getVectorFromCubemapFaceTexCoord.

/**
     *
     * Computes the 3 component vector coordinates for the given face and coords
     *
     * @param x the x texture coordinate
     * @param y the y texture coordinate
     * @param mapSize the size of a face of the cube map
     * @param face the face to consider
     * @param store a vector3f where the resulting vector will be stored
     * @param fixSeamsMethod the method to fix the seams
     * @return
     */
public static Vector3f getVectorFromCubemapFaceTexCoord(int x, int y, int mapSize, int face, Vector3f store, FixSeamsMethod fixSeamsMethod) {
    if (store == null) {
        store = new Vector3f();
    }
    float u;
    float v;
    if (fixSeamsMethod == FixSeamsMethod.Stretch) {
        /* Code from Nvtt : http://code.google.com/p/nvidia-texture-tools/source/browse/trunk/src/nvtt/CubeSurface.cpp		
             * transform from [0..res - 1] to [-1 .. 1], match up edges exactly. */
        u = (2.0f * (float) x / ((float) mapSize - 1.0f)) - 1.0f;
        v = (2.0f * (float) y / ((float) mapSize - 1.0f)) - 1.0f;
    } else {
        //Done if any other fix method or no fix method is set
        /* transform from [0..res - 1] to [- (1 - 1 / res) .. (1 - 1 / res)]
             * (+ 0.5f is for texel center addressing) */
        u = (2.0f * ((float) x + 0.5f) / (float) (mapSize)) - 1.0f;
        v = (2.0f * ((float) y + 0.5f) / (float) (mapSize)) - 1.0f;
    }
    if (fixSeamsMethod == FixSeamsMethod.Wrap) {
        // Warp texel centers in the proximity of the edges.
        float a = pow((float) mapSize, 2.0f) / pow(((float) mapSize - 1f), 3.0f);
        u = a * pow(u, 3f) + u;
        v = a * pow(v, 3f) + v;
    }
    // Code from Nvtt : http://code.google.com/p/nvidia-texture-tools/source/browse/trunk/src/nvtt/CubeSurface.cpp	
    switch(face) {
        case 0:
            store.set(1f, -v, -u);
            break;
        case 1:
            store.set(-1f, -v, u);
            break;
        case 2:
            store.set(u, 1f, v);
            break;
        case 3:
            store.set(u, -1f, -v);
            break;
        case 4:
            store.set(u, -v, 1f);
            break;
        case 5:
            store.set(-u, -v, -1.0f);
            break;
    }
    return store.normalizeLocal();
}

Example 20 with Face

use of com.jme3.scene.plugins.blender.meshes.Face in project jmonkeyengine by jMonkeyEngine.

the class CubeMapWrapper method getPixel.

/**
     * 
     * Reads a pixel from the cube map given the coordinate vector
     * @param vector the direction vector to fetch the texel
     * @param mipLevel the mip level to read from
     * @param store the color in which to store the pixel color read.
     * @return the color of the pixel read.
     */
public ColorRGBA getPixel(Vector3f vector, int mipLevel, ColorRGBA store) {
    if (mipMapRaster == null) {
        throw new IllegalArgumentException("This cube map has no mip maps");
    }
    if (store == null) {
        store = new ColorRGBA();
    }
    int face = EnvMapUtils.getCubemapFaceTexCoordFromVector(vector, sizes[mipLevel], uvs, EnvMapUtils.FixSeamsMethod.Stretch);
    mipMapRaster.setSlice(face);
    mipMapRaster.setMipLevel(mipLevel);
    return mipMapRaster.getPixel((int) uvs.x, (int) uvs.y, store);
}