private void endpart() {
if (part != null) {
part.indexOffset = istart;
part.numVertices = indices.size - istart;
istart = indices.size;
part = null;
}
}
/** Starts a new MeshPart. The mesh part is not usable until end() is called */
public MeshPart part(final String id, int primitiveType) {
if (this.attributes == null) throw new RuntimeException("Call begin() first");
endpart();
part = new MeshPart();
part.id = id;
this.primitiveType = part.primitiveType = primitiveType;
parts.add(part);
setColor(null);
return part;
}
protected void convertMesh(ModelMesh modelMesh) {
int numIndices = 0;
for (ModelMeshPart part : modelMesh.parts) {
numIndices += part.indices.length;
}
VertexAttributes attributes = new VertexAttributes(modelMesh.attributes);
int numVertices = modelMesh.vertices.length / (attributes.vertexSize / 4);
Mesh mesh = new Mesh(true, numVertices, numIndices, attributes);
meshes.add(mesh);
disposables.add(mesh);
BufferUtils.copy(modelMesh.vertices, mesh.getVerticesBuffer(), modelMesh.vertices.length, 0);
int offset = 0;
mesh.getIndicesBuffer().clear();
for (ModelMeshPart part : modelMesh.parts) {
MeshPart meshPart = new MeshPart();
meshPart.id = part.id;
meshPart.primitiveType = part.primitiveType;
meshPart.offset = offset;
meshPart.size = part.indices.length;
meshPart.mesh = mesh;
mesh.getIndicesBuffer().put(part.indices);
offset += meshPart.size;
meshParts.add(meshPart);
}
mesh.getIndicesBuffer().position(0);
for (MeshPart part : meshParts) part.update();
}
/** End building the mesh and returns the mesh */
public Mesh end() {
if (this.attributes == null) throw new RuntimeException("Call begin() first");
endpart();
final Mesh mesh = new Mesh(true, vertices.size, indices.size, attributes);
mesh.setVertices(vertices.items, 0, vertices.size);
mesh.setIndices(indices.items, 0, indices.size);
for (MeshPart p : parts) p.mesh = mesh;
parts.clear();
attributes = null;
vertices.clear();
indices.clear();
return mesh;
}
private void convertMesh(ModelMesh modelMesh) {
int numIndices = 0;
for (ModelMeshPart part : modelMesh.parts) {
numIndices += part.indices.length;
}
VertexAttributes attributes = new VertexAttributes(modelMesh.attributes);
int numVertices = modelMesh.vertices.length / (attributes.vertexSize / 4);
Mesh mesh = new Mesh(true, numVertices, numIndices, attributes);
meshes.add(mesh);
disposables.add(mesh);
BufferUtils.copy(modelMesh.vertices, mesh.getVerticesBuffer(), modelMesh.vertices.length, 0);
int offset = 0;
mesh.getIndicesBuffer().clear();
for (ModelMeshPart part : modelMesh.parts) {
MeshPart meshPart = new MeshPart();
meshPart.id = part.id; // FIXME not storing the mesh name, part ids may collide!
meshPart.primitiveType = part.primitiveType;
meshPart.indexOffset = offset;
meshPart.numVertices = part.indices.length;
meshPart.mesh = mesh;
mesh.getIndicesBuffer().put(part.indices);
offset += meshPart.numVertices;
meshParts.add(meshPart);
}
mesh.getIndicesBuffer().position(0);
}
@Deprecated
public static Model createFromMesh(
final Mesh mesh,
int indexOffset,
int vertexCount,
int primitiveType,
final Material material) {
Model result = new Model();
MeshPart meshPart = new MeshPart();
meshPart.id = "part1";
meshPart.indexOffset = indexOffset;
meshPart.numVertices = vertexCount;
meshPart.primitiveType = primitiveType;
meshPart.mesh = mesh;
NodePart partMaterial = new NodePart();
partMaterial.material = material;
partMaterial.meshPart = meshPart;
Node node = new Node();
node.id = "node1";
node.parts.add(partMaterial);
result.meshes.add(mesh);
result.materials.add(material);
result.nodes.add(node);
result.meshParts.add(meshPart);
result.manageDisposable(mesh);
return result;
}
/**
* Adds the specified mesh part to the current node. The Mesh will be managed by the model and
* disposed when the model is disposed. The resources the Material might contain are not managed,
* use {@link #manage(Disposable)} to add those to the model.
*
* @return The added MeshPart.
*/
public MeshPart part(
final String id,
final Mesh mesh,
int primitiveType,
int offset,
int size,
final Material material) {
final MeshPart meshPart = new MeshPart();
meshPart.id = id;
meshPart.primitiveType = primitiveType;
meshPart.mesh = mesh;
meshPart.indexOffset = offset;
meshPart.numVertices = size;
part(meshPart, material);
return meshPart;
}
