Examples with FloatBuffer java.nio.FloatBuffer used on opensource projects

Example 16 with FloatBuffer

use of java.nio.FloatBuffer in project jmonkeyengine by jMonkeyEngine.

the class LodGenerator method gatherVertexData.

private void gatherVertexData(Mesh mesh, List<Vertex> vertexLookup) {
    //in case the model is currently animating with software animation
    //attempting to retrieve the bind position instead of the position.
    VertexBuffer position = mesh.getBuffer(VertexBuffer.Type.BindPosePosition);
    if (position == null) {
        position = mesh.getBuffer(VertexBuffer.Type.Position);
    }
    FloatBuffer pos = (FloatBuffer) position.getDataReadOnly();
    pos.rewind();
    while (pos.remaining() != 0) {
        Vertex v = new Vertex();
        v.position.setX(pos.get());
        v.position.setY(pos.get());
        v.position.setZ(pos.get());
        v.isSeam = false;
        Vertex existingV = findSimilar(v);
        if (existingV != null) {
            //vertex position already exists
            existingV.isSeam = true;
            v.isSeam = true;
        } else {
            vertexList.add(v);
        }
        vertexLookup.add(v);
    }
    pos.rewind();
}

Example 17 with FloatBuffer

use of java.nio.FloatBuffer in project jmonkeyengine by jMonkeyEngine.

the class TextureAtlas method applyCoords.

/**
     * Applies the texture coordinates to the given output mesh
     * if the DiffuseMap or ColorMap of the input geometry exist in the atlas.
     * @param geom The geometry to change the texture coordinate buffer on.
     * @param offset Target buffer offset.
     * @param outMesh The mesh to set the coords in (can be same as input).
     * @return true if texture has been found and coords have been changed, false otherwise.
     */
public boolean applyCoords(Geometry geom, int offset, Mesh outMesh) {
    Mesh inMesh = geom.getMesh();
    geom.computeWorldMatrix();
    VertexBuffer inBuf = inMesh.getBuffer(Type.TexCoord);
    VertexBuffer outBuf = outMesh.getBuffer(Type.TexCoord);
    if (inBuf == null || outBuf == null) {
        throw new IllegalStateException("Geometry mesh has no texture coordinate buffer.");
    }
    Texture tex = getMaterialTexture(geom, "DiffuseMap");
    if (tex == null) {
        tex = getMaterialTexture(geom, "ColorMap");
    }
    if (tex != null) {
        TextureAtlasTile tile = getAtlasTile(tex);
        if (tile != null) {
            FloatBuffer inPos = (FloatBuffer) inBuf.getData();
            FloatBuffer outPos = (FloatBuffer) outBuf.getData();
            tile.transformTextureCoords(inPos, offset, outPos);
            return true;
        } else {
            return false;
        }
    } else {
        throw new IllegalStateException("Geometry has no proper texture.");
    }
}

Example 18 with FloatBuffer

use of java.nio.FloatBuffer in project jmonkeyengine by jMonkeyEngine.

the class ObjectHelper method flipMeshIfRequired.

/**
     * The method flips the mesh if the scale is mirroring it. Mirroring scale has either 1 or all 3 factors negative.
     * If two factors are negative then there is no mirroring because a rotation and translation can be found that will
     * lead to the same transform when all scales are positive.
     * 
     * @param geometry
     *            the geometry that is being flipped if necessary
     * @param scale
     *            the scale vector of the given geometry
     */
private void flipMeshIfRequired(Geometry geometry, Vector3f scale) {
    float s = scale.x * scale.y * scale.z;
    if (s < 0 && geometry.getMesh() != null) {
        // negative s means that the scale is mirroring the object
        FloatBuffer normals = geometry.getMesh().getFloatBuffer(Type.Normal);
        if (normals != null) {
            for (int i = 0; i < normals.limit(); i += 3) {
                if (scale.x < 0) {
                    normals.put(i, -normals.get(i));
                }
                if (scale.y < 0) {
                    normals.put(i + 1, -normals.get(i + 1));
                }
                if (scale.z < 0) {
                    normals.put(i + 2, -normals.get(i + 2));
                }
            }
        }
        if (geometry.getMesh().getMode() == Mode.Triangles) {
            // there is no need to flip the indexes for lines and points
            LOGGER.finer("Flipping index order in triangle mesh.");
            Buffer indexBuffer = geometry.getMesh().getBuffer(Type.Index).getData();
            for (int i = 0; i < indexBuffer.limit(); i += 3) {
                if (indexBuffer instanceof ShortBuffer) {
                    short index = ((ShortBuffer) indexBuffer).get(i + 1);
                    ((ShortBuffer) indexBuffer).put(i + 1, ((ShortBuffer) indexBuffer).get(i + 2));
                    ((ShortBuffer) indexBuffer).put(i + 2, index);
                } else {
                    int index = ((IntBuffer) indexBuffer).get(i + 1);
                    ((IntBuffer) indexBuffer).put(i + 1, ((IntBuffer) indexBuffer).get(i + 2));
                    ((IntBuffer) indexBuffer).put(i + 2, index);
                }
            }
        }
    }
}

Example 19 with FloatBuffer

use of java.nio.FloatBuffer in project jmonkeyengine by jMonkeyEngine.

the class TestCustomAnim method simpleInitApp.

@Override
public void simpleInitApp() {
    AmbientLight al = new AmbientLight();
    rootNode.addLight(al);
    DirectionalLight dl = new DirectionalLight();
    dl.setDirection(Vector3f.UNIT_XYZ.negate());
    rootNode.addLight(dl);
    Box box = new Box(1, 1, 1);
    VertexBuffer weightsHW = new VertexBuffer(Type.HWBoneWeight);
    VertexBuffer indicesHW = new VertexBuffer(Type.HWBoneIndex);
    indicesHW.setUsage(Usage.CpuOnly);
    weightsHW.setUsage(Usage.CpuOnly);
    box.setBuffer(weightsHW);
    box.setBuffer(indicesHW);
    // Setup bone weight buffer
    FloatBuffer weights = FloatBuffer.allocate(box.getVertexCount() * 4);
    VertexBuffer weightsBuf = new VertexBuffer(Type.BoneWeight);
    weightsBuf.setupData(Usage.CpuOnly, 4, Format.Float, weights);
    box.setBuffer(weightsBuf);
    // Setup bone index buffer
    ByteBuffer indices = ByteBuffer.allocate(box.getVertexCount() * 4);
    VertexBuffer indicesBuf = new VertexBuffer(Type.BoneIndex);
    indicesBuf.setupData(Usage.CpuOnly, 4, Format.UnsignedByte, indices);
    box.setBuffer(indicesBuf);
    // Create bind pose buffers
    box.generateBindPose(true);
    // Create skeleton
    bone = new Bone("root");
    bone.setBindTransforms(Vector3f.ZERO, Quaternion.IDENTITY, Vector3f.UNIT_XYZ);
    bone.setUserControl(true);
    skeleton = new Skeleton(new Bone[] { bone });
    // Assign all verticies to bone 0 with weight 1
    for (int i = 0; i < box.getVertexCount() * 4; i += 4) {
        // assign vertex to bone index 0
        indices.array()[i + 0] = 0;
        indices.array()[i + 1] = 0;
        indices.array()[i + 2] = 0;
        indices.array()[i + 3] = 0;
        // set weight to 1 only for first entry
        weights.array()[i + 0] = 1;
        weights.array()[i + 1] = 0;
        weights.array()[i + 2] = 0;
        weights.array()[i + 3] = 0;
    }
    // Maximum number of weights per bone is 1
    box.setMaxNumWeights(1);
    // Create model
    Geometry geom = new Geometry("box", box);
    geom.setMaterial(assetManager.loadMaterial("Textures/Terrain/BrickWall/BrickWall.j3m"));
    Node model = new Node("model");
    model.attachChild(geom);
    // Create skeleton control
    SkeletonControl skeletonControl = new SkeletonControl(skeleton);
    model.addControl(skeletonControl);
    rootNode.attachChild(model);
}

Example 20 with FloatBuffer

use of java.nio.FloatBuffer in project jmonkeyengine by jMonkeyEngine.

the class HelloOpenCL method testKernel.

private boolean testKernel(Context clContext, CommandQueue clQueue) {
    try {
        //create fill code
        String include = "#define TYPE float\n";
        Program program = clContext.createProgramFromSourceFilesWithInclude(assetManager, include, "jme3test/opencl/Blas.cl");
        program.build();
        Kernel kernel = program.createKernel("Fill");
        System.out.println("number of args: " + kernel.getArgCount());
        //fill buffer
        int size = 256 + 128;
        Buffer buffer = clContext.createBuffer(size * 4);
        float value = 5;
        Event event = kernel.Run1(clQueue, new com.jme3.opencl.Kernel.WorkSize(buffer.getSize() / 4), buffer, value);
        event.waitForFinished();
        //check if filled
        ByteBuffer buf = buffer.map(clQueue, MappingAccess.MAP_READ_ONLY);
        FloatBuffer buff = buf.asFloatBuffer();
        for (int i = 0; i < size; ++i) {
            float v = buff.get(i);
            assertEquals(value, v, "Buffer filled with the wrong value at index " + i);
        }
        buffer.unmap(clQueue, buf);
        //release
        buffer.release();
        kernel.release();
        program.release();
    } catch (AssertionError ex) {
        LOG.log(Level.SEVERE, "kernel test failed with an assertion error");
        return false;
    } catch (Exception ex) {
        LOG.log(Level.SEVERE, "kernel test failed with:", ex);
        return false;
    }
    return true;
}