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

Example 31 with VertexBuffer

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

the class LodGenerator method gatherVertexData.

private void gatherVertexData(Mesh mesh, List<Vertex> vertexLookup) {
    //in case the model is currently animating with software animation
    //attempting to retrieve the bind position instead of the position.
    VertexBuffer position = mesh.getBuffer(VertexBuffer.Type.BindPosePosition);
    if (position == null) {
        position = mesh.getBuffer(VertexBuffer.Type.Position);
    }
    FloatBuffer pos = (FloatBuffer) position.getDataReadOnly();
    pos.rewind();
    while (pos.remaining() != 0) {
        Vertex v = new Vertex();
        v.position.setX(pos.get());
        v.position.setY(pos.get());
        v.position.setZ(pos.get());
        v.isSeam = false;
        Vertex existingV = findSimilar(v);
        if (existingV != null) {
            //vertex position already exists
            existingV.isSeam = true;
            v.isSeam = true;
        } else {
            vertexList.add(v);
        }
        vertexLookup.add(v);
    }
    pos.rewind();
}

Example 32 with VertexBuffer

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

the class TextureAtlas method applyAtlasCoords.

private static void applyAtlasCoords(List<Geometry> geometries, Mesh outMesh, TextureAtlas atlas) {
    int globalVertIndex = 0;
    for (Geometry geom : geometries) {
        Mesh inMesh = geom.getMesh();
        geom.computeWorldMatrix();
        int geomVertCount = inMesh.getVertexCount();
        VertexBuffer inBuf = inMesh.getBuffer(Type.TexCoord);
        VertexBuffer outBuf = outMesh.getBuffer(Type.TexCoord);
        if (inBuf == null || outBuf == null) {
            continue;
        }
        atlas.applyCoords(geom, globalVertIndex, outMesh);
        globalVertIndex += geomVertCount;
    }
}

Example 33 with VertexBuffer

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

the class TextureAtlas method applyCoords.

/**
     * Applies the texture coordinates to the given output mesh
     * if the DiffuseMap or ColorMap of the input geometry exist in the atlas.
     * @param geom The geometry to change the texture coordinate buffer on.
     * @param offset Target buffer offset.
     * @param outMesh The mesh to set the coords in (can be same as input).
     * @return true if texture has been found and coords have been changed, false otherwise.
     */
public boolean applyCoords(Geometry geom, int offset, Mesh outMesh) {
    Mesh inMesh = geom.getMesh();
    geom.computeWorldMatrix();
    VertexBuffer inBuf = inMesh.getBuffer(Type.TexCoord);
    VertexBuffer outBuf = outMesh.getBuffer(Type.TexCoord);
    if (inBuf == null || outBuf == null) {
        throw new IllegalStateException("Geometry mesh has no texture coordinate buffer.");
    }
    Texture tex = getMaterialTexture(geom, "DiffuseMap");
    if (tex == null) {
        tex = getMaterialTexture(geom, "ColorMap");
    }
    if (tex != null) {
        TextureAtlasTile tile = getAtlasTile(tex);
        if (tile != null) {
            FloatBuffer inPos = (FloatBuffer) inBuf.getData();
            FloatBuffer outPos = (FloatBuffer) outBuf.getData();
            tile.transformTextureCoords(inPos, offset, outPos);
            return true;
        } else {
            return false;
        }
    } else {
        throw new IllegalStateException("Geometry has no proper texture.");
    }
}

Example 34 with VertexBuffer

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

the class PoseTrack method applyFrame.

private void applyFrame(Mesh target, int frameIndex, float weight) {
    PoseFrame frame = frames[frameIndex];
    VertexBuffer pb = target.getBuffer(Type.Position);
    for (int i = 0; i < frame.poses.length; i++) {
        Pose pose = frame.poses[i];
        float poseWeight = frame.weights[i] * weight;
        pose.apply(poseWeight, (FloatBuffer) pb.getData());
    }
    // force to re-upload data to gpu
    pb.updateData(pb.getData());
}

Example 35 with VertexBuffer

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

the class SkeletonControl method applySkinning.

/**
     * Method to apply skinning transforms to a mesh's buffers
     *
     * @param mesh the mesh
     * @param offsetMatrices the offset matices to apply
     */
private void applySkinning(Mesh mesh, Matrix4f[] offsetMatrices) {
    int maxWeightsPerVert = mesh.getMaxNumWeights();
    if (maxWeightsPerVert <= 0) {
        throw new IllegalStateException("Max weights per vert is incorrectly set!");
    }
    int fourMinusMaxWeights = 4 - maxWeightsPerVert;
    // NOTE: This code assumes the vertex buffer is in bind pose
    // resetToBind() has been called this frame
    VertexBuffer vb = mesh.getBuffer(Type.Position);
    FloatBuffer fvb = (FloatBuffer) vb.getData();
    fvb.rewind();
    VertexBuffer nb = mesh.getBuffer(Type.Normal);
    FloatBuffer fnb = (FloatBuffer) nb.getData();
    fnb.rewind();
    // get boneIndexes and weights for mesh
    ByteBuffer ib = (ByteBuffer) mesh.getBuffer(Type.BoneIndex).getData();
    FloatBuffer wb = (FloatBuffer) mesh.getBuffer(Type.BoneWeight).getData();
    ib.rewind();
    wb.rewind();
    float[] weights = wb.array();
    byte[] indices = ib.array();
    int idxWeights = 0;
    TempVars vars = TempVars.get();
    float[] posBuf = vars.skinPositions;
    float[] normBuf = vars.skinNormals;
    int iterations = (int) FastMath.ceil(fvb.limit() / ((float) posBuf.length));
    int bufLength = posBuf.length;
    for (int i = iterations - 1; i >= 0; i--) {
        // read next set of positions and normals from native buffer
        bufLength = Math.min(posBuf.length, fvb.remaining());
        fvb.get(posBuf, 0, bufLength);
        fnb.get(normBuf, 0, bufLength);
        int verts = bufLength / 3;
        int idxPositions = 0;
        // iterate vertices and apply skinning transform for each effecting bone
        for (int vert = verts - 1; vert >= 0; vert--) {
            // Skip this vertex if the first weight is zero.
            if (weights[idxWeights] == 0) {
                idxPositions += 3;
                idxWeights += 4;
                continue;
            }
            float nmx = normBuf[idxPositions];
            float vtx = posBuf[idxPositions++];
            float nmy = normBuf[idxPositions];
            float vty = posBuf[idxPositions++];
            float nmz = normBuf[idxPositions];
            float vtz = posBuf[idxPositions++];
            float rx = 0, ry = 0, rz = 0, rnx = 0, rny = 0, rnz = 0;
            for (int w = maxWeightsPerVert - 1; w >= 0; w--) {
                float weight = weights[idxWeights];
                Matrix4f mat = offsetMatrices[indices[idxWeights++] & 0xff];
                rx += (mat.m00 * vtx + mat.m01 * vty + mat.m02 * vtz + mat.m03) * weight;
                ry += (mat.m10 * vtx + mat.m11 * vty + mat.m12 * vtz + mat.m13) * weight;
                rz += (mat.m20 * vtx + mat.m21 * vty + mat.m22 * vtz + mat.m23) * weight;
                rnx += (nmx * mat.m00 + nmy * mat.m01 + nmz * mat.m02) * weight;
                rny += (nmx * mat.m10 + nmy * mat.m11 + nmz * mat.m12) * weight;
                rnz += (nmx * mat.m20 + nmy * mat.m21 + nmz * mat.m22) * weight;
            }
            idxWeights += fourMinusMaxWeights;
            idxPositions -= 3;
            normBuf[idxPositions] = rnx;
            posBuf[idxPositions++] = rx;
            normBuf[idxPositions] = rny;
            posBuf[idxPositions++] = ry;
            normBuf[idxPositions] = rnz;
            posBuf[idxPositions++] = rz;
        }
        fvb.position(fvb.position() - bufLength);
        fvb.put(posBuf, 0, bufLength);
        fnb.position(fnb.position() - bufLength);
        fnb.put(normBuf, 0, bufLength);
    }
    vars.release();
    vb.updateData(fvb);
    nb.updateData(fnb);
}