Initial commit

modules/meshops/meshops.cpp

@@ -0,0 +1,82 @@
+#include "meshops.h"
+
+MeshOps *MeshOps::get_singleton()
+{
+	static MeshOps *mo = NULL;
+	if (!mo)
+		mo = memnew(MeshOps);
+	return mo;
+}
+
+Array MeshOps::merge_meshes(const Array &surfaces, const Array &xforms) const
+{
+	int i;
+	Array ret;
+	ret.resize(Mesh::ARRAY_MAX);
+	int surface_count = surfaces.size();
+	PoolVector<int> cur_index;
+	PoolVector<Vector3> cur_vertex;
+	PoolVector<Vector3> cur_normal;
+	PoolVector<Vector2> cur_uv;
+	for (i = 0; i < surface_count; i++) {
+		int icount, count, j, k, st;
+		const Array &sts = surfaces[i];
+		for (st = 0; st < sts.size(); st++) {
+			const Array &s = sts[st];
+			const PoolVector<int> &index = s[Mesh::ARRAY_INDEX];
+			const PoolVector<Vector3> &vertex =
+				s[Mesh::ARRAY_VERTEX];
+			const PoolVector<Vector3> &normal =
+				s[Mesh::ARRAY_NORMAL];
+			const PoolVector<Vector2> &uv = s[Mesh::ARRAY_TEX_UV];
+			icount = cur_index.size();
+			count = cur_vertex.size();
+			const Transform &xform = xforms[i];
+			for (j = 0; j < Mesh::ARRAY_MAX; j++) {
+				switch (j) {
+				case Mesh::ARRAY_INDEX:
+					cur_index.append_array(index);
+					for (k = 0; k < index.size(); k++)
+						cur_index.write()[k + icount] =
+							cur_index.read()[k +
+									 icount] +
+							count;
+					break;
+				case Mesh::ARRAY_VERTEX:
+					cur_vertex.append_array(vertex);
+					for (k = 0; k < vertex.size(); k++)
+						cur_vertex.write()[k + count] =
+							xform.xform(
+								cur_vertex.read()
+									[k +
+									 count]);
+					break;
+				case Mesh::ARRAY_NORMAL:
+					cur_normal.append_array(normal);
+					/* all sizes except index are the same */
+					for (k = 0; k < vertex.size(); k++)
+						cur_normal.write()[k + count] =
+							xform.basis.xform(
+								cur_normal.read()
+									[k +
+									 count]);
+					break;
+				case Mesh::ARRAY_TEX_UV:
+					cur_uv.append_array(uv);
+				}
+			}
+		}
+	}
+	ret[Mesh::ARRAY_INDEX] = cur_index;
+	ret[Mesh::ARRAY_VERTEX] = cur_vertex;
+	ret[Mesh::ARRAY_NORMAL] = cur_normal;
+	ret[Mesh::ARRAY_TEX_UV] = cur_uv;
+	return ret;
+}
+
+void MeshOps::_bind_methods()
+{
+	ClassDB::bind_method(D_METHOD("merge_meshes", "surfaces", "xforms"),
+			     &MeshOps::merge_meshes);
+}
+