Examples of VertexBuffer

com.jme3.scene.VertexBuffer
A VertexBuffer contains a particular type of geometry data used by {@link Mesh}es. Every VertexBuffer set on a Mesh is sent as an attribute to the vertex shader to be processed.
Several terms are used throughout the javadoc for this class, explanation:
- Element - A single element is the largest individual object inside a VertexBuffer. E.g. if the VertexBuffer is used to store 3D position data, then an element will be a single 3D vector.
- Component - A component represents the parts inside an element. For a 3D vector, a single component is one of the dimensions, X, Y or Z.

Examples of com.jme3.scene.VertexBuffer

  //FIXME for old mesh format create empty HWSkinning buffers
  private void fixHWSkinningBuffers(Mesh mesh) {
        //creating empty buffers for HW skinning 
        //the buffers will be setup if ever used.
    //setting usage to cpuOnly so that the buffer is not send empty to the GPU  
    VertexBuffer indicesHW = mesh.getBuffer(Type.HWBoneIndex);
    if(indicesHW == null){
      indicesHW = new VertexBuffer(Type.HWBoneIndex);
      indicesHW.setUsage(Usage.CpuOnly);
      mesh.setBuffer(indicesHW);
    }


        VertexBuffer weightsHW = mesh.getBuffer(Type.HWBoneWeight);
        if(weightsHW == null) {
          weightsHW = new VertexBuffer(Type.HWBoneWeight);
            weightsHW.setUsage(Usage.CpuOnly);
            mesh.setBuffer(weightsHW);
        }
       
              
  }

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Examples of com.jme3.scene.VertexBuffer

        if (boneLengths != null) {
            this.boneLengths = boneLengths;
            pointsCount *= 2;
        }


        VertexBuffer pb = new VertexBuffer(Type.Position);
        FloatBuffer fpb = BufferUtils.createFloatBuffer(pointsCount * 3);
        pb.setupData(Usage.Stream, 3, Format.Float, fpb);
        this.setBuffer(pb);


        this.setPointSize(7);
        this.updateCounts();

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Examples of com.jme3.scene.VertexBuffer


    /**
     * The method updates the geometry according to the poitions of the bones.
     */
    public void updateGeometry() {
        VertexBuffer vb = this.getBuffer(Type.Position);
        FloatBuffer posBuf = this.getFloatBuffer(Type.Position);
        posBuf.clear();
        for (int i = 0; i < skeleton.getBoneCount(); ++i) {
            Bone bone = skeleton.getBone(i);
            Vector3f head = bone.getModelSpacePosition();


            posBuf.put(head.getX()).put(head.getY()).put(head.getZ());
            if (boneLengths != null) {
                Vector3f tail = head.add(bone.getModelSpaceRotation().mult(Vector3f.UNIT_Y.mult(boneLengths.get(i))));
                posBuf.put(tail.getX()).put(tail.getY()).put(tail.getZ());
            }
        }
        posBuf.flip();
        vb.updateData(posBuf);


        this.updateBound();
    }

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Examples of com.jme3.scene.VertexBuffer

//        Vector3f dir = extent.normalize();


        tempQuat.lookAt(extent, Vector3f.UNIT_Y);
        tempQuat.normalizeLocal();


        VertexBuffer pvb = getBuffer(Type.Position);
        FloatBuffer buffer = (FloatBuffer)pvb.getData(); 
        buffer.rewind();
        for (int i = 0; i < positions.length; i += 3) {
            Vector3f vec = tempVec.set(positions[i],
                    positions[i + 1],
                    positions[i + 2]);
            vec.multLocal(len);
            tempQuat.mult(vec, vec);


            buffer.put(vec.x);
            buffer.put(vec.y);
            buffer.put(vec.z);
        }
        
        pvb.updateData(buffer);


        updateBound();
        updateCounts();
    }

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Examples of com.jme3.scene.VertexBuffer

        );
        setMode(Mode.Lines);
    }


    public void update(Vector3f[] points){
        VertexBuffer vb = getBuffer(Type.Position);
        if (vb == null){
            setBuffer(Type.Position, 3, BufferUtils.createFloatBuffer(points));
            return;
        }


        FloatBuffer b = BufferUtils.createFloatBuffer(points);
        FloatBuffer a = (FloatBuffer) vb.getData();
        b.rewind();
        a.rewind();
        a.put(b);
        a.rewind();


        vb.updateData(a);
        
        updateBound();
    }

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Examples of com.jme3.scene.VertexBuffer

        if (boneLengths != null) {
            this.boneLengths = boneLengths;
            lineVerticesCount *= 2;
        }


        VertexBuffer pb = new VertexBuffer(Type.Position);
        FloatBuffer fpb = BufferUtils.createFloatBuffer(lineVerticesCount * 3);
        pb.setupData(Usage.Stream, 3, Format.Float, fpb);
        this.setBuffer(pb);


        VertexBuffer ib = new VertexBuffer(Type.Index);
        ShortBuffer sib = BufferUtils.createShortBuffer(boneLengths != null ? lineVerticesCount : numConnections * 2);
        ib.setupData(Usage.Static, 2, Format.UnsignedShort, sib);
        this.setBuffer(ib);


        if (boneLengths != null) {
            for (int i = 0; i < lineVerticesCount; ++i) {
                sib.put((short) i);

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Examples of com.jme3.scene.VertexBuffer


    /**
     * The method updates the geometry according to the poitions of the bones.
     */
    public void updateGeometry() {
        VertexBuffer vb = this.getBuffer(Type.Position);
        FloatBuffer posBuf = this.getFloatBuffer(Type.Position);
        posBuf.clear();
        for (int i = 0; i < skeleton.getBoneCount(); ++i) {
            Bone bone = skeleton.getBone(i);
            Vector3f head = bone.getModelSpacePosition();


            posBuf.put(head.getX()).put(head.getY()).put(head.getZ());
            if (boneLengths != null) {
                Vector3f tail = head.add(bone.getModelSpaceRotation().mult(Vector3f.UNIT_Y.mult(boneLengths.get(i))));
                posBuf.put(tail.getX()).put(tail.getY()).put(tail.getZ());
            }
        }
        posBuf.flip();
        vb.updateData(posBuf);


        this.updateBound();
    }

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Examples of com.jme3.scene.VertexBuffer

        updateBound();
        updateCounts();
    }


    public void updatePositions(float radius) {
        VertexBuffer pvb = getBuffer(Type.Position);
        FloatBuffer pb;


        if (pvb == null) {
            pvb = new VertexBuffer(Type.Position);
            pb = BufferUtils.createVector3Buffer(samples * 2 + samples * zSamples /*+ 6 * 3*/);
            pvb.setupData(Usage.Dynamic, 3, Format.Float, pb);
            setBuffer(pvb);
        } else {
            pb = (FloatBuffer) pvb.getData();
        }


        pb.rewind();


        // X axis

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Examples of com.jme3.scene.VertexBuffer


        updateCounts();
    }


    public void updatePositions(float xExt, float yExt, float zExt){
        VertexBuffer pvb = getBuffer(Type.Position);
        FloatBuffer pb;
        if (pvb == null){
            pvb = new VertexBuffer(Type.Position);
            pb = BufferUtils.createVector3Buffer(8);
            pvb.setupData(Usage.Dynamic, 3, Format.Float, pb);
            setBuffer(pvb);
        }else{
            pb = (FloatBuffer) pvb.getData();
            pvb.updateData(pb);
        }
        pb.rewind();
        pb.put(
            new float[]{
                -xExt, -yExt,  zExt,

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Examples of com.jme3.scene.VertexBuffer


        this.setMode(Mode.Points);
        this.setPointSize(1);
        this.boneLengths = boneLengths;


        VertexBuffer pb = new VertexBuffer(Type.Position);
        FloatBuffer fpb = BufferUtils.createFloatBuffer(POINT_AMOUNT * connectionsAmount * 3);
        pb.setupData(Usage.Stream, 3, Format.Float, fpb);
        this.setBuffer(pb);


        this.updateCounts();
    }

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