Examples with VertexBuffer com.jme3.scene.VertexBuffer used on opensource projects

Example 11 with VertexBuffer

use of com.jme3.scene.VertexBuffer 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 12 with VertexBuffer

use of com.jme3.scene.VertexBuffer 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 13 with VertexBuffer

use of com.jme3.scene.VertexBuffer 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 14 with VertexBuffer

use of com.jme3.scene.VertexBuffer in project jmonkeyengine by jMonkeyEngine.

the class TerrainPatch method setHeight.

protected void setHeight(List<LocationHeight> locationHeights, boolean overrideHeight) {
    final float[] heightArray = geomap.getHeightArray();
    final VertexBuffer vertexBuffer = mesh.getBuffer(Type.Position);
    final FloatBuffer floatBuffer = mesh.getFloatBuffer(Type.Position);
    for (LocationHeight lh : locationHeights) {
        if (lh.x < 0 || lh.z < 0 || lh.x >= size || lh.z >= size) {
            continue;
        }
        int idx = lh.z * size + lh.x;
        if (overrideHeight) {
            heightArray[idx] = lh.h;
        } else {
            float currentHeight = floatBuffer.get(idx * 3 + 1);
            heightArray[idx] = currentHeight + lh.h;
        }
    }
    floatBuffer.clear();
    geomap.writeVertexArray(floatBuffer, stepScale, false);
    vertexBuffer.setUpdateNeeded();
}

Example 15 with VertexBuffer

use of com.jme3.scene.VertexBuffer in project jmonkeyengine by jMonkeyEngine.

the class TerrainPatch method setInBuffer.

private void setInBuffer(Mesh mesh, int index, Vector3f normal, Vector3f tangent, Vector3f binormal) {
    VertexBuffer NB = mesh.getBuffer(Type.Normal);
    VertexBuffer TB = mesh.getBuffer(Type.Tangent);
    VertexBuffer BB = mesh.getBuffer(Type.Binormal);
    BufferUtils.setInBuffer(normal, (FloatBuffer) NB.getData(), index);
    BufferUtils.setInBuffer(tangent, (FloatBuffer) TB.getData(), index);
    BufferUtils.setInBuffer(binormal, (FloatBuffer) BB.getData(), index);
    NB.setUpdateNeeded();
    TB.setUpdateNeeded();
    BB.setUpdateNeeded();
}