add FastMesh by REDxEYE

README.md

@@ -96,6 +96,7 @@ If you still have doubts, consider checking the official [Frontier's Mod Policy]
 - Jurassic World, Jurassic World Fallen Kingdom, Jurassic World Evolution, Jurassic World Evolution 2 and their respective logos are trademarks of Universal Studios and Amblin Entertainment, Inc.
 - Daemon1, DennisNedry1993 and Inaki for initial modding attempts and documentation.
 - mpeterv for [luacheck](https://github.com/mpeterv/luacheck)
+- REDxEYE for [FastMesh](https://github.com/REDxEYE/SourceIO/blob/master/blender_bindings/utils/fast_mesh.py)
 - `texconv` from [DirectXTex](https://github.com/microsoft/DirectXTex) is used internally to convert to and from DDS textures.
 
 ## Get in touch

__version__.py

@@ -1,4 +1,4 @@
 # this file is auto-generated by the pre-commit hook increment_version.py
 VERSION = "2025.01.28"
-COMMIT_HASH = "99a8eea14"
-COMMIT_TIME = "Tue Jan 28 16:37:30 2025 +0100"
+COMMIT_HASH = "d321dfb6d"
+COMMIT_TIME = "Tue Jan 28 17:21:16 2025 +0100"

docs/Credits.md

@@ -9,4 +9,5 @@ icon: material/account-circle
 - Jurassic World, Jurassic World Fallen Kingdom, Jurassic World Evolution, Jurassic World Evolution 2 and their respective logos are trademarks of Universal Studios and Amblin Entertainment, Inc.
 - Daemon1, DennisNedry1993 and Inaki for initial modding attempts and documentation.
 - mpeterv for [luacheck](https://github.com/mpeterv/luacheck)
+- REDxEYE for [FastMesh](https://github.com/REDxEYE/SourceIO/blob/master/blender_bindings/utils/fast_mesh.py)
 - `texconv` from [DirectXTex](https://github.com/microsoft/DirectXTex) is used internally to convert to and from DDS textures.

plugin/import_ms2.py

@@ -9,6 +9,7 @@
 from plugin.modules_import.geometry import import_mesh_layers, import_shapekeys, ob_postpro, append_mirror_modifier, \
 	get_valid_lod_objects, import_mesh_properties
 from plugin.modules_import.material import import_material
+from plugin.utils.fast_mesh import FastMesh
 from plugin.utils.hair import add_psys
 from plugin.utils.shell import is_shell, gauge_uv_scale_wrapper
 from plugin.utils.object import create_ob, create_scene, create_collection, set_collection_visibility
@@ -46,7 +47,8 @@ def load(reporter, filepath: str = "", use_custom_normals: bool = False, mirror_
 					b_me = mesh_dict[m_ob.mesh_index]
 				# create object and mesh from data
 				else:
-					b_me = bpy.data.meshes.new(f"{model_info.name}_model{m_ob.mesh_index}")
+					# b_me = bpy.data.meshes.new(f"{model_info.name}_model{m_ob.mesh_index}")
+					b_me = FastMesh.new(f"{model_info.name}_model{m_ob.mesh_index}")
 					b_me.from_pydata(mesh.vertices, [], mesh.tris)
 					mesh_dict[m_ob.mesh_index] = b_me
 					import_mesh_properties(b_me, mesh)

plugin/utils/fast_mesh.py

@@ -0,0 +1,91 @@
+# Author: REDxEYE
+# Source: https://github.com/REDxEYE/SourceIO/blob/master/blender_bindings/utils/fast_mesh.py
+
+import bpy
+import numpy as np
+from bpy.types import Mesh
+
+
+class FastMesh(Mesh):
+    __slots__ = ()
+
+    @classmethod
+    def new(cls, name: str) -> 'FastMesh':
+        mesh = bpy.data.meshes.new(name)
+        mesh.__class__ = cls
+        return mesh
+
+    def from_pydata(self,
+                    vertices: np.ndarray,
+                    edges: np.ndarray,
+                    faces: np.ndarray,
+                    shade_flat=True):
+        """
+        Make a mesh from a list of vertices/edges/faces
+        Until we have a nicer way to make geometry, use this.
+
+        :arg vertices:
+
+           float triplets each representing (X, Y, Z)
+           eg: [(0.0, 1.0, 0.5), ...].
+
+        :type vertices: iterable object
+        :arg edges:
+
+           int pairs, each pair contains two indices to the
+           *vertices* argument. eg: [(1, 2), ...]
+
+           When an empty iterable is passed in, the edges are inferred from the polygons.
+
+        :type edges: iterable object
+        :arg faces:
+
+           iterator of faces, each faces contains three or more indices to
+           the *vertices* argument. eg: [(5, 6, 8, 9), (1, 2, 3), ...]
+
+        :type faces: iterable object
+
+        .. warning::
+
+           Invalid mesh data
+           *(out of range indices, edges with matching indices,
+           2 sided faces... etc)* are **not** prevented.
+           If the data used for mesh creation isn't known to be valid,
+           run :class:`Mesh.validate` after this function.
+        """
+        has_faces = len(faces) > 0
+        has_edges = len(edges) > 0
+        vertices_len = len(vertices)
+        self.vertices.add(vertices_len)
+
+        if has_faces:
+            if not isinstance(faces, np.ndarray):
+                raise NotImplementedError("FastMesh only works with numpy arrays")
+            face_lengths = faces.shape[1]
+            faces_len = faces.shape[0]
+            self.loops.add(faces_len * face_lengths)
+            self.polygons.add(faces_len)
+            loop_starts = np.arange(0, faces_len * face_lengths, face_lengths, dtype=np.uint32)
+            self.polygons.foreach_set("loop_start", loop_starts)
+            self.polygons.foreach_set("vertices", faces.ravel())
+
+        self.vertices.foreach_set("co", vertices.ravel())
+
+        if has_edges:
+            if not isinstance(edges, np.ndarray):
+                raise NotImplementedError("FastMesh only works with numpy arrays")
+            self.edges.add(len(edges))
+            self.edges.foreach_set("vertices", edges.ravel())
+
+        if shade_flat:
+            self.shade_flat()
+
+        if has_edges or has_faces:
+            self.update(
+                # Needed to either:
+                # - Calculate edges that don't exist for polygons.
+                # - Assign edges to polygon loops.
+                calc_edges=has_edges,
+                # Flag loose edges.
+                calc_edges_loose=has_faces,
+            )