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

Example 51 with FloatBuffer

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

the class StripBox method duUpdateGeometryVertices.

protected void duUpdateGeometryVertices() {
    FloatBuffer fpb = BufferUtils.createVector3Buffer(8 * 3);
    Vector3f[] v = computeVertices();
    fpb.put(new float[] { v[0].x, v[0].y, v[0].z, v[1].x, v[1].y, v[1].z, v[2].x, v[2].y, v[2].z, v[3].x, v[3].y, v[3].z, v[4].x, v[4].y, v[4].z, v[5].x, v[5].y, v[5].z, v[6].x, v[6].y, v[6].z, v[7].x, v[7].y, v[7].z });
    setBuffer(Type.Position, 3, fpb);
    setMode(Mode.TriangleStrip);
    updateBound();
}

Example 52 with FloatBuffer

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

the class Arrow method setArrowExtent.

/**
     * Sets the arrow's extent.
     * This will modify the buffers on the mesh.
     * 
     * @param extent the arrow's extent.
     */
public void setArrowExtent(Vector3f extent) {
    float len = extent.length();
    //        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();
}

Example 53 with FloatBuffer

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

the class WireFrustum method update.

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();
}

Example 54 with FloatBuffer

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

the class WireSphere method updatePositions.

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);
        pvb.setupData(Usage.Dynamic, 3, Format.Float, pb);
        setBuffer(pvb);
    } else {
        pb = (FloatBuffer) pvb.getData();
    }
    pb.rewind();
    // X axis
    //        pb.put(radius).put(0).put(0);
    //        pb.put(-radius).put(0).put(0);
    //
    //        // Y axis
    //        pb.put(0).put(radius).put(0);
    //        pb.put(0).put(-radius).put(0);
    //
    //        // Z axis
    //        pb.put(0).put(0).put(radius);
    //        pb.put(0).put(0).put(-radius);
    float rate = FastMath.TWO_PI / (float) samples;
    float angle = 0;
    for (int i = 0; i < samples; i++) {
        float x = radius * FastMath.cos(angle);
        float y = radius * FastMath.sin(angle);
        pb.put(x).put(y).put(0);
        angle += rate;
    }
    angle = 0;
    for (int i = 0; i < samples; i++) {
        float x = radius * FastMath.cos(angle);
        float y = radius * FastMath.sin(angle);
        pb.put(0).put(x).put(y);
        angle += rate;
    }
    float zRate = (radius * 2) / (float) (zSamples);
    float zHeight = -radius + (zRate / 2f);
    float rb = 1f / zSamples;
    float b = rb / 2f;
    for (int k = 0; k < zSamples; k++) {
        angle = 0;
        float scale = FastMath.sin(b * FastMath.PI);
        for (int i = 0; i < samples; i++) {
            float x = radius * FastMath.cos(angle);
            float y = radius * FastMath.sin(angle);
            pb.put(x * scale).put(zHeight).put(y * scale);
            angle += rate;
        }
        zHeight += zRate;
        b += rb;
    }
}

Example 55 with FloatBuffer

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

the class InstancedGeometry method updateInstances.

public void updateInstances() {
    FloatBuffer fb = (FloatBuffer) transformInstanceData.getData();
    fb.limit(fb.capacity());
    fb.position(0);
    TempVars vars = TempVars.get();
    {
        float[] temp = vars.matrixWrite;
        for (int i = 0; i < firstUnusedIndex; i++) {
            Geometry geom = geometries[i];
            if (geom == null) {
                geom = geometries[firstUnusedIndex - 1];
                if (geom == null) {
                    throw new AssertionError();
                }
                swap(i, firstUnusedIndex - 1);
                while (geometries[firstUnusedIndex - 1] == null) {
                    firstUnusedIndex--;
                }
            }
            Matrix4f worldMatrix = geom.getWorldMatrix();
            updateInstance(worldMatrix, temp, 0, vars.tempMat3, vars.quat1);
            fb.put(temp);
        }
    }
    vars.release();
    fb.flip();
    if (fb.limit() / INSTANCE_SIZE != firstUnusedIndex) {
        throw new AssertionError();
    }
    transformInstanceData.updateData(fb);
}