Java Code Examples for com.jme3.collision.CollisionResults#clear()

The following examples show how to use com.jme3.collision.CollisionResults#clear() . You can vote up the ones you like or vote down the ones you don't like, and go to the original project or source file by following the links above each example. You may check out the related API usage on the sidebar.
Example 1
Source File: BIHTree.java    From jmonkeyengine with BSD 3-Clause "New" or "Revised" License 5 votes vote down vote up 
private int collideWithRay(Ray r,
        Matrix4f worldMatrix,
        BoundingVolume worldBound,
        CollisionResults results) {

    TempVars vars = TempVars.get();
    try {
        CollisionResults boundResults = vars.collisionResults;
        boundResults.clear();
        worldBound.collideWith(r, boundResults);
        if (boundResults.size() > 0) {
            float tMin = boundResults.getClosestCollision().getDistance();
            float tMax = boundResults.getFarthestCollision().getDistance();

            if (tMax <= 0) {
                tMax = Float.POSITIVE_INFINITY;
            } else if (tMin == tMax) {
                tMin = 0;
            }

            if (tMin <= 0) {
                tMin = 0;
            }

            if (r.getLimit() < Float.POSITIVE_INFINITY) {
                tMax = Math.min(tMax, r.getLimit());
                if (tMin > tMax){
                    return 0;
                }
            }

//            return root.intersectBrute(r, worldMatrix, this, tMin, tMax, results);
            return root.intersectWhere(r, worldMatrix, this, tMin, tMax, results);
        }
        return 0;
    } finally {
        vars.release();
    }
}
Example 2
Source File: BoundingVolume.java    From jmonkeyengine with BSD 3-Clause "New" or "Revised" License 5 votes vote down vote up 
public int collideWith(Collidable other) {
    TempVars tempVars = TempVars.get();
    try {
        CollisionResults tempResults = tempVars.collisionResults;
        tempResults.clear();
        return collideWith(other, tempResults);
    } finally {
        tempVars.release();
    }
}
Example 3
Source File: EntropyComputeUtil.java    From jmonkeyengine with BSD 3-Clause "New" or "Revised" License 4 votes vote down vote up 
public static float computeLodEntropy(Mesh terrainBlock, Buffer lodIndices){
    // Bounding box for the terrain block
    BoundingBox bbox = (BoundingBox) terrainBlock.getBound();

    // Vertex positions for the block
    FloatBuffer positions = terrainBlock.getFloatBuffer(Type.Position);

    // Prepare to cast rays
    Vector3f pos = new Vector3f();
    Vector3f dir = new Vector3f(0, -1, 0);
    Ray ray = new Ray(pos, dir);

    // Prepare collision results
    CollisionResults results = new CollisionResults();

    // Set the LOD indices on the block
    VertexBuffer originalIndices = terrainBlock.getBuffer(Type.Index);

    terrainBlock.clearBuffer(Type.Index);
    if (lodIndices instanceof IntBuffer)
        terrainBlock.setBuffer(Type.Index, 3, (IntBuffer)lodIndices);
    else if (lodIndices instanceof ShortBuffer) {
        terrainBlock.setBuffer(Type.Index, 3, (ShortBuffer) lodIndices);
    } else {
        terrainBlock.setBuffer(Type.Index, 3, (ByteBuffer) lodIndices);
    }

    // Recalculate collision mesh
    terrainBlock.createCollisionData();

    float entropy = 0;
    for (int i = 0; i < positions.limit() / 3; i++){
        BufferUtils.populateFromBuffer(pos, positions, i);

        float realHeight = pos.y;

        pos.addLocal(0, bbox.getYExtent(), 0);
        ray.setOrigin(pos);

        results.clear();
        terrainBlock.collideWith(ray, Matrix4f.IDENTITY, bbox, results);

        if (results.size() > 0){
            Vector3f contactPoint = results.getClosestCollision().getContactPoint();
            float delta = Math.abs(realHeight - contactPoint.y);
            entropy = Math.max(delta, entropy);
        }
    }

    // Restore original indices
    terrainBlock.clearBuffer(Type.Index);
    terrainBlock.setBuffer(originalIndices);

    return entropy;
}
Example 4
Source File: EntropyComputeUtil.java    From MikuMikuStudio with BSD 2-Clause "Simplified" License 4 votes vote down vote up 
public static float computeLodEntropy(Mesh terrainBlock, Buffer lodIndices){
    // Bounding box for the terrain block
    BoundingBox bbox = (BoundingBox) terrainBlock.getBound();

    // Vertex positions for the block
    FloatBuffer positions = terrainBlock.getFloatBuffer(Type.Position);

    // Prepare to cast rays
    Vector3f pos = new Vector3f();
    Vector3f dir = new Vector3f(0, -1, 0);
    Ray ray = new Ray(pos, dir);

    // Prepare collision results
    CollisionResults results = new CollisionResults();

    // Set the LOD indices on the block
    VertexBuffer originalIndices = terrainBlock.getBuffer(Type.Index);

    terrainBlock.clearBuffer(Type.Index);
    if (lodIndices instanceof IntBuffer)
        terrainBlock.setBuffer(Type.Index, 3, (IntBuffer)lodIndices);
    else if (lodIndices instanceof ShortBuffer) {
        terrainBlock.setBuffer(Type.Index, 3, (ShortBuffer) lodIndices);
    }

    // Recalculate collision mesh
    terrainBlock.createCollisionData();

    float entropy = 0;
    for (int i = 0; i < positions.limit() / 3; i++){
        BufferUtils.populateFromBuffer(pos, positions, i);

        float realHeight = pos.y;

        pos.addLocal(0, bbox.getYExtent(), 0);
        ray.setOrigin(pos);

        results.clear();
        terrainBlock.collideWith(ray, Matrix4f.IDENTITY, bbox, results);

        if (results.size() > 0){
            Vector3f contactPoint = results.getClosestCollision().getContactPoint();
            float delta = Math.abs(realHeight - contactPoint.y);
            entropy = Math.max(delta, entropy);
        }
    }

    // Restore original indices
    terrainBlock.clearBuffer(Type.Index);
    terrainBlock.setBuffer(originalIndices);

    return entropy;
}