[Blender] Implemented tesselation for CAD-model, retopology and optimisation tesselation's result, assigning physical properties with assigned material

cg/blender/utils/object_transforms.py

@@ -0,0 +1,68 @@
+# -*- coding: utf-8 -*-
+# Copyright (C) 2023 Ilia Kurochkin <brothermechanic@gmail.com>
+#
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+__version__ = '0.3'
+
+from mathutils import Matrix, Vector, Quaternion
+import bpy
+
+
+def apply_transforms(obj, location=False, rotation=False, scale=False):
+    ''' bake local object transforms '''
+    # original idea from https://github.com/machin3io/MACHIN3tools
+    # update database
+    bpy.context.view_layer.update()
+
+    def get_loc_matrix(location):
+        return Matrix.Translation(location)
+
+    def get_rot_matrix(rotation):
+        return rotation.to_matrix().to_4x4()
+
+    def get_sca_matrix(scale):
+        scale_martix = Matrix()
+        for i in range(3):
+            scale_martix[i][i] = scale[i]
+        return scale_martix
+
+    if location and rotation and scale:
+        loc, rot, sca = obj.matrix_world.decompose()
+        mesh_martix = get_loc_matrix(loc) @ get_rot_matrix(rot) @ get_sca_matrix(sca)
+        obj.data.transform(mesh_martix)
+        apply_matrix = get_loc_matrix(Vector.Fill(3, 0)) @ get_rot_matrix(Quaternion()) @ get_sca_matrix(Vector.Fill(3, 1))
+        obj.matrix_world = apply_matrix
+    else:
+        if location:
+            raise Exception('Location only applies with all transformations (rotate and scale) together!')
+        if rotation:
+            loc, rot, sca = obj.matrix_world.decompose()
+            mesh_martix = get_rot_matrix(rot)
+            obj.data.transform(mesh_martix)
+            apply_matrix = get_loc_matrix(loc) @ get_rot_matrix(Quaternion()) @ get_sca_matrix(sca)
+            obj.matrix_world = apply_matrix
+
+        if scale:
+            loc, rot, sca = obj.matrix_world.decompose()
+            mesh_martix = get_sca_matrix(sca)
+            obj.data.transform(mesh_martix)
+            apply_matrix = get_loc_matrix(loc) @ get_rot_matrix(rot) @ get_sca_matrix(Vector.Fill(3, 1))
+            obj.matrix_world = apply_matrix
+
+    obj.rotation_mode = 'XYZ'
+    return obj
+
+
+def round_transforms(obj):
+    ''' Geting location of object and round it. '''
+    for idx, axis in enumerate(obj.location[:]):
+        obj.location[idx] = round(axis, 5)
+    return obj.location