Examples with IndexBuffer com.jme3.scene.mesh.IndexBuffer used on opensource projects

Example 16 with IndexBuffer

use of com.jme3.scene.mesh.IndexBuffer in project jmonkeyengine by jMonkeyEngine.

the class TangentBinormalGenerator method processTriangles.

private static List<VertexData> processTriangles(Mesh mesh, int[] index, Vector3f[] v, Vector2f[] t, boolean splitMirrored) {
    IndexBuffer indexBuffer = mesh.getIndexBuffer();
    FloatBuffer vertexBuffer = (FloatBuffer) mesh.getBuffer(Type.Position).getData();
    if (mesh.getBuffer(Type.TexCoord) == null) {
        throw new IllegalArgumentException("Can only generate tangents for " + "meshes with texture coordinates");
    }
    FloatBuffer textureBuffer = (FloatBuffer) mesh.getBuffer(Type.TexCoord).getData();
    List<VertexData> vertices = initVertexData(vertexBuffer.limit() / 3);
    for (int i = 0; i < indexBuffer.size() / 3; i++) {
        for (int j = 0; j < 3; j++) {
            index[j] = indexBuffer.get(i * 3 + j);
            populateFromBuffer(v[j], vertexBuffer, index[j]);
            populateFromBuffer(t[j], textureBuffer, index[j]);
        }
        TriangleData triData = processTriangle(index, v, t);
        if (splitMirrored) {
            triData.setIndex(index);
            triData.triangleOffset = i * 3;
        }
        vertices.get(index[0]).triangles.add(triData);
        vertices.get(index[1]).triangles.add(triData);
        vertices.get(index[2]).triangles.add(triData);
    }
    return vertices;
}

Example 17 with IndexBuffer

use of com.jme3.scene.mesh.IndexBuffer in project jmonkeyengine by jMonkeyEngine.

the class TangentBinormalGenerator method processTriangleStrip.

private static List<VertexData> processTriangleStrip(Mesh mesh, int[] index, Vector3f[] v, Vector2f[] t) {
    IndexBuffer indexBuffer = mesh.getIndexBuffer();
    FloatBuffer vertexBuffer = (FloatBuffer) mesh.getBuffer(Type.Position).getData();
    FloatBuffer textureBuffer = (FloatBuffer) mesh.getBuffer(Type.TexCoord).getData();
    List<VertexData> vertices = initVertexData(vertexBuffer.limit() / 3);
    index[0] = indexBuffer.get(0);
    index[1] = indexBuffer.get(1);
    populateFromBuffer(v[0], vertexBuffer, index[0]);
    populateFromBuffer(v[1], vertexBuffer, index[1]);
    populateFromBuffer(t[0], textureBuffer, index[0]);
    populateFromBuffer(t[1], textureBuffer, index[1]);
    for (int i = 2; i < indexBuffer.size(); i++) {
        index[2] = indexBuffer.get(i);
        BufferUtils.populateFromBuffer(v[2], vertexBuffer, index[2]);
        BufferUtils.populateFromBuffer(t[2], textureBuffer, index[2]);
        boolean isDegenerate = isDegenerateTriangle(v[0], v[1], v[2]);
        TriangleData triData = processTriangle(index, v, t);
        if (!isDegenerate) {
            vertices.get(index[0]).triangles.add(triData);
            vertices.get(index[1]).triangles.add(triData);
            vertices.get(index[2]).triangles.add(triData);
        }
        Vector3f vTemp = v[0];
        v[0] = v[1];
        v[1] = v[2];
        v[2] = vTemp;
        Vector2f tTemp = t[0];
        t[0] = t[1];
        t[1] = t[2];
        t[2] = tTemp;
        index[0] = index[1];
        index[1] = index[2];
    }
    return vertices;
}

Example 18 with IndexBuffer

use of com.jme3.scene.mesh.IndexBuffer in project jmonkeyengine by jMonkeyEngine.

the class MikkTSpaceImpl method getIndex.

private int getIndex(int face, int vert) {
    IndexBuffer index = mesh.getIndexBuffer();
    int vertIndex = index.get(face * 3 + vert);
    return vertIndex;
}

Example 19 with IndexBuffer

use of com.jme3.scene.mesh.IndexBuffer in project jmonkeyengine by jMonkeyEngine.

the class Converter method convert.

public static synchronized IndexedMesh convert(Mesh mesh) {
    IndexedMesh jBulletIndexedMesh = new IndexedMesh();
    jBulletIndexedMesh.triangleIndexBase = ByteBuffer.allocate(mesh.getTriangleCount() * 3 * 4);
    jBulletIndexedMesh.vertexBase = ByteBuffer.allocate(mesh.getVertexCount() * 3 * 4);
    IndexBuffer indices = mesh.getIndicesAsList();
    FloatBuffer vertices = mesh.getFloatBuffer(Type.Position);
    vertices.rewind();
    int verticesLength = mesh.getVertexCount() * 3;
    jBulletIndexedMesh.numVertices = mesh.getVertexCount();
    //3 verts * 4 bytes per.
    jBulletIndexedMesh.vertexStride = 12;
    for (int i = 0; i < verticesLength; i++) {
        float tempFloat = vertices.get();
        jBulletIndexedMesh.vertexBase.putFloat(tempFloat);
    }
    int indicesLength = mesh.getTriangleCount() * 3;
    jBulletIndexedMesh.numTriangles = mesh.getTriangleCount();
    //3 index entries * 4 bytes each.
    jBulletIndexedMesh.triangleIndexStride = 12;
    for (int i = 0; i < indicesLength; i++) {
        jBulletIndexedMesh.triangleIndexBase.putInt(indices.get(i));
    }
    vertices.rewind();
    vertices.clear();
    return jBulletIndexedMesh;
}

Example 20 with IndexBuffer

use of com.jme3.scene.mesh.IndexBuffer in project jmonkeyengine by jMonkeyEngine.

the class Converter method convert.

public static Mesh convert(IndexedMesh mesh) {
    Mesh jmeMesh = new Mesh();
    jmeMesh.setBuffer(Type.Index, 3, BufferUtils.createShortBuffer(mesh.numTriangles * 3));
    jmeMesh.setBuffer(Type.Position, 3, BufferUtils.createFloatBuffer(mesh.numVertices * 3));
    IndexBuffer indicess = jmeMesh.getIndexBuffer();
    FloatBuffer vertices = jmeMesh.getFloatBuffer(Type.Position);
    for (int i = 0; i < mesh.numTriangles * 3; i++) {
        indicess.put(i, mesh.triangleIndexBase.getInt(i * 4));
    }
    for (int i = 0; i < mesh.numVertices * 3; i++) {
        vertices.put(i, mesh.vertexBase.getFloat(i * 4));
    }
    jmeMesh.updateCounts();
    jmeMesh.updateBound();
    jmeMesh.getFloatBuffer(Type.Position).clear();
    return jmeMesh;
}