Add Convex Hull mesh decimation (#20)

* feature: bump version to 1.3.5 and add max_hull_vertices parameter to convex_decomposition function

* fix: Set numpy ==1.23.5 to avoid issues with numpy 2.0.0 release

* Fix issue with multiple testpypi version conflicts

.github/workflows/deploy_to_pypi.yaml

@@ -115,3 +115,4 @@ jobs:
       uses: pypa/gh-action-pypi-publish@release/v1
       with:
         repository-url: https://test.pypi.org/legacy/
+        skip_existing: true

pyproject.toml

@@ -13,7 +13,7 @@ readme = "README.md"
 requires-python = ">=3.8"
 license = {text = "GPLv3"}
 
-version = "1.3.4"
+version = "1.3.5"
 
 dynamic = ["dependencies"]
 

requirements.txt

@@ -6,6 +6,7 @@ filelock==3.9.0
 GitPython==3.1.29
 jsonschema==4.17.3
 opencv-python==4.6.0.66
+numpy==1.23.5
 Pillow==9.4.0
 PyYAML==6.0.1
 requests==2.27.1

syclops/utility/blender_utils.py

@@ -398,14 +398,15 @@ def convex_decomposition(
     obj_pointer: ObjPointer,
     conv_hull_collection_pointer: ObjPointer,
     quality: float = 90,
+    max_hull_vertices: int = 100,
 ) -> List[bpy.types.Object]:
     """Decompose an object into convex hulls for physics simulation.
 
     Args:
         obj_pointer (ObjPointer): Pointer to object to decompose.
         conv_hull_collection_pointer (ObjPointer): Pointer to collection to store convex hulls in.
         quality (float, optional): Quality of the convex decomposition. Defaults to 90.
-
+        max_hull_vertices (int, optional): Maximum number of vertices in a convex hull. Defaults to 256.
     Returns:
         list[bpy.types.Object]: List of convex hulls.
     """
@@ -436,6 +437,15 @@ def convex_decomposition(
         # Create the mesh data
         mesh.from_pydata(convex_hull[0], [], convex_hull[1])
 
+        # Num vertices of mesh
+        num_vertices = len(mesh.vertices)
+        if num_vertices > max_hull_vertices:
+            decimate_factor = max_hull_vertices / num_vertices
+
+            # Decimate the mesh if it has too many vertices
+            decimate_mesh(convex_obj, decimate_factor)
+
+
         # Update the mesh and object
         mesh.update()
         convex_obj.select_set(True)