public static void compressIndexBuffer(Mesh mesh) {
int vertCount = mesh.getVertexCount();
VertexBuffer vb = mesh.getBuffer(Type.Index);
Format targetFmt;
if (vb.getFormat() == Format.UnsignedInt && vertCount <= 0xffff) {
if (vertCount <= 256) targetFmt = Format.UnsignedByte;
else targetFmt = Format.UnsignedShort;
} else if (vb.getFormat() == Format.UnsignedShort && vertCount <= 0xff) {
targetFmt = Format.UnsignedByte;
} else {
return;
}
IndexBuffer src = mesh.getIndexBuffer();
Buffer newBuf = VertexBuffer.createBuffer(targetFmt, vb.getNumComponents(), src.size());
VertexBuffer newVb = new VertexBuffer(Type.Index);
newVb.setupData(vb.getUsage(), vb.getNumComponents(), targetFmt, newBuf);
mesh.clearBuffer(Type.Index);
mesh.setBuffer(newVb);
IndexBuffer dst = mesh.getIndexBuffer();
for (int i = 0; i < src.size(); i++) {
dst.put(i, src.get(i));
}
}
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;
}
if (triData != null) {
vertices.get(index[0]).triangles.add(triData);
vertices.get(index[1]).triangles.add(triData);
vertices.get(index[2]).triangles.add(triData);
}
}
return vertices;
}
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 (triData != null && !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;
}
@Override
public void initParticleData(Emitter emitter, int numParticles) {
setMode(Mode.Triangles);
this.emitter = emitter;
this.finVerts = BufferUtils.createFloatBuffer(templateVerts.capacity() * numParticles);
try {
this.finCoords = BufferUtils.createFloatBuffer(templateCoords.capacity() * numParticles);
} catch (Exception e) {
}
this.finIndexes = BufferUtils.createShortBuffer(templateIndexes.size() * numParticles);
this.finNormals = BufferUtils.createFloatBuffer(templateNormals.capacity() * numParticles);
this.finColors = BufferUtils.createFloatBuffer(templateVerts.capacity() / 3 * 4 * numParticles);
int index = 0, index2 = 0, index3 = 0, index4 = 0, index5 = 0;
int indexOffset = 0;
for (int i = 0; i < numParticles; i++) {
templateVerts.rewind();
for (int v = 0; v < templateVerts.capacity(); v += 3) {
tempV3.set(templateVerts.get(v), templateVerts.get(v + 1), templateVerts.get(v + 2));
finVerts.put(index, tempV3.getX());
index++;
finVerts.put(index, tempV3.getY());
index++;
finVerts.put(index, tempV3.getZ());
index++;
}
try {
templateCoords.rewind();
for (int v = 0; v < templateCoords.capacity(); v++) {
finCoords.put(index2, templateCoords.get(v));
index2++;
}
} catch (Exception e) {
}
for (int v = 0; v < templateIndexes.size(); v++) {
finIndexes.put(index3, (short) (templateIndexes.get(v) + indexOffset));
index3++;
}
indexOffset += templateVerts.capacity() / 3;
templateNormals.rewind();
for (int v = 0; v < templateNormals.capacity(); v++) {
finNormals.put(index4, templateNormals.get(v));
index4++;
}
for (int v = 0; v < finColors.capacity(); v++) {
finColors.put(v, 1.0f);
}
}
// Help GC
// tempV3 = null;
// templateVerts = null;
// templateCoords = null;
// templateIndexes = null;
// templateNormals = null;
// Clear & ssign buffers
this.clearBuffer(VertexBuffer.Type.Position);
this.setBuffer(VertexBuffer.Type.Position, 3, finVerts);
this.clearBuffer(VertexBuffer.Type.TexCoord);
try {
this.setBuffer(VertexBuffer.Type.TexCoord, 2, finCoords);
} catch (Exception e) {
}
this.clearBuffer(VertexBuffer.Type.Index);
this.setBuffer(VertexBuffer.Type.Index, 3, finIndexes);
this.clearBuffer(VertexBuffer.Type.Normal);
this.setBuffer(VertexBuffer.Type.Normal, 3, finNormals);
this.clearBuffer(VertexBuffer.Type.Color);
this.setBuffer(VertexBuffer.Type.Color, 4, finColors);
this.updateBound();
}
