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

Example 6 with ShortBuffer

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

the class BitmapTextPage method assemble.

// Here is where one might add JmeCloneable related stuff except
// the old clone() method doesn't actually bother to clone anything.
// The arrays and the pageQuads are shared across all BitmapTextPage
// clones and it doesn't seem to bother anything.  That means the
// fields could probably just as well be static... but this code is
// all very fragile.  I'm not tipping that particular boat today. -pspeed
void assemble(Letters quads) {
    pageQuads.clear();
    quads.rewind();
    while (quads.nextCharacter()) {
        if (quads.isPrintable()) {
            if (quads.getCharacterSetPage() == page) {
                pageQuads.add(quads.getQuad());
            }
        }
    }
    Mesh m = getMesh();
    int vertCount = pageQuads.size() * 4;
    int triCount = pageQuads.size() * 2;
    VertexBuffer pb = m.getBuffer(Type.Position);
    VertexBuffer tb = m.getBuffer(Type.TexCoord);
    VertexBuffer ib = m.getBuffer(Type.Index);
    VertexBuffer cb = m.getBuffer(Type.Color);
    FloatBuffer fpb = (FloatBuffer) pb.getData();
    FloatBuffer ftb = (FloatBuffer) tb.getData();
    ShortBuffer sib = (ShortBuffer) ib.getData();
    ByteBuffer bcb = (ByteBuffer) cb.getData();
    // increase capacity of buffers as needed
    fpb.rewind();
    fpb = BufferUtils.ensureLargeEnough(fpb, vertCount * 3);
    fpb.limit(vertCount * 3);
    pb.updateData(fpb);
    ftb.rewind();
    ftb = BufferUtils.ensureLargeEnough(ftb, vertCount * 2);
    ftb.limit(vertCount * 2);
    tb.updateData(ftb);
    bcb.rewind();
    bcb = BufferUtils.ensureLargeEnough(bcb, vertCount * 4);
    bcb.limit(vertCount * 4);
    cb.updateData(bcb);
    sib.rewind();
    sib = BufferUtils.ensureLargeEnough(sib, triCount * 3);
    sib.limit(triCount * 3);
    ib.updateData(sib);
    m.updateCounts();
    // go for each quad and append it to the buffers
    if (pos != null) {
        for (int i = 0; i < pageQuads.size(); i++) {
            LetterQuad fq = pageQuads.get(i);
            fq.storeToArrays(pos, tc, idx, color, i);
            fpb.put(pos);
            ftb.put(tc);
            sib.put(idx);
            bcb.put(color);
        }
    } else {
        for (int i = 0; i < pageQuads.size(); i++) {
            LetterQuad fq = pageQuads.get(i);
            fq.appendPositions(fpb);
            fq.appendTexCoords(ftb);
            fq.appendIndices(sib, i);
            fq.appendColors(bcb);
        }
    }
    fpb.rewind();
    ftb.rewind();
    sib.rewind();
    bcb.rewind();
    updateModelBound();
}

Example 7 with ShortBuffer

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

the class ParticleTriMesh method initParticleData.

//    private Particle[] particlesCopy;
@Override
public void initParticleData(ParticleEmitter emitter, int numParticles) {
    setMode(Mode.Triangles);
    this.emitter = emitter;
    //        particlesCopy = new Particle[numParticles];
    // set positions
    FloatBuffer pb = BufferUtils.createVector3Buffer(numParticles * 4);
    // if the buffer is already set only update the data
    VertexBuffer buf = getBuffer(VertexBuffer.Type.Position);
    if (buf != null) {
        buf.updateData(pb);
    } else {
        VertexBuffer pvb = new VertexBuffer(VertexBuffer.Type.Position);
        pvb.setupData(Usage.Stream, 3, Format.Float, pb);
        setBuffer(pvb);
    }
    // set colors
    ByteBuffer cb = BufferUtils.createByteBuffer(numParticles * 4 * 4);
    buf = getBuffer(VertexBuffer.Type.Color);
    if (buf != null) {
        buf.updateData(cb);
    } else {
        VertexBuffer cvb = new VertexBuffer(VertexBuffer.Type.Color);
        cvb.setupData(Usage.Stream, 4, Format.UnsignedByte, cb);
        cvb.setNormalized(true);
        setBuffer(cvb);
    }
    // set texcoords
    FloatBuffer tb = BufferUtils.createVector2Buffer(numParticles * 4);
    uniqueTexCoords = false;
    for (int i = 0; i < numParticles; i++) {
        tb.put(0f).put(1f);
        tb.put(1f).put(1f);
        tb.put(0f).put(0f);
        tb.put(1f).put(0f);
    }
    tb.flip();
    buf = getBuffer(VertexBuffer.Type.TexCoord);
    if (buf != null) {
        buf.updateData(tb);
    } else {
        VertexBuffer tvb = new VertexBuffer(VertexBuffer.Type.TexCoord);
        tvb.setupData(Usage.Static, 2, Format.Float, tb);
        setBuffer(tvb);
    }
    // set indices
    ShortBuffer ib = BufferUtils.createShortBuffer(numParticles * 6);
    for (int i = 0; i < numParticles; i++) {
        int startIdx = (i * 4);
        // triangle 1
        ib.put((short) (startIdx + 1)).put((short) (startIdx + 0)).put((short) (startIdx + 2));
        // triangle 2
        ib.put((short) (startIdx + 1)).put((short) (startIdx + 2)).put((short) (startIdx + 3));
    }
    ib.flip();
    buf = getBuffer(VertexBuffer.Type.Index);
    if (buf != null) {
        buf.updateData(ib);
    } else {
        VertexBuffer ivb = new VertexBuffer(VertexBuffer.Type.Index);
        ivb.setupData(Usage.Static, 3, Format.UnsignedShort, ib);
        setBuffer(ivb);
    }
    updateCounts();
}

Example 8 with ShortBuffer

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

the class Torus method setIndexData.

private void setIndexData() {
    // allocate connectivity
    int triCount = 2 * circleSamples * radialSamples;
    ShortBuffer sib = BufferUtils.createShortBuffer(3 * triCount);
    setBuffer(Type.Index, 3, sib);
    int i;
    // generate connectivity
    int connectionStart = 0;
    int index = 0;
    for (int circleCount = 0; circleCount < circleSamples; circleCount++) {
        int i0 = connectionStart;
        int i1 = i0 + 1;
        connectionStart += radialSamples + 1;
        int i2 = connectionStart;
        int i3 = i2 + 1;
        for (i = 0; i < radialSamples; i++, index += 6) {
            //                if (true) {
            sib.put((short) i0++);
            sib.put((short) i2);
            sib.put((short) i1);
            sib.put((short) i1++);
            sib.put((short) i2++);
            sib.put((short) i3++);
        //                    getIndexBuffer().put(i0++);
        //                    getIndexBuffer().put(i2);
        //                    getIndexBuffer().put(i1);
        //                    getIndexBuffer().put(i1++);
        //                    getIndexBuffer().put(i2++);
        //                    getIndexBuffer().put(i3++);
        //                } else {
        //                    getIndexBuffer().put(i0++);
        //                    getIndexBuffer().put(i1);
        //                    getIndexBuffer().put(i2);
        //                    getIndexBuffer().put(i1++);
        //                    getIndexBuffer().put(i3++);
        //                    getIndexBuffer().put(i2++);
        //                }
        }
    }
}

Example 9 with ShortBuffer

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

the class TerrainPatch method generateLodEntropies.

/**
     * This calculation is slow, so don't use it often.
     */
public void generateLodEntropies() {
    float[] entropies = new float[getMaxLod() + 1];
    for (int i = 0; i <= getMaxLod(); i++) {
        int curLod = (int) Math.pow(2, i);
        IndexBuffer idxB = geomap.writeIndexArrayLodDiff(curLod, false, false, false, false, totalSize);
        Buffer ib;
        if (idxB.getBuffer() instanceof IntBuffer)
            ib = (IntBuffer) idxB.getBuffer();
        else
            ib = (ShortBuffer) idxB.getBuffer();
        entropies[i] = EntropyComputeUtil.computeLodEntropy(mesh, ib);
    }
    lodEntropy = entropies;
}

Example 10 with ShortBuffer

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

the class EntropyComputeUtil method computeLodEntropy.

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;
}