Merge pull request #2145 from Erkhembayaar/main

Adding solver_options and self_intersection to bool.intersection

trimesh/boolean.py

@@ -57,7 +57,7 @@ def union(meshes, engine=None, **kwargs):
     return result
 
 
-def intersection(meshes, engine=None, **kwargs):
+def intersection(meshes, engine=None, solver_options=False, use_self=False, **kwargs):
     """
     Compute the boolean intersection between a mesh an n other meshes.
 
@@ -67,12 +67,19 @@ def intersection(meshes, engine=None, **kwargs):
       Meshes to be processed
     engine : str
       Which backend to use, i.e. 'blender' or 'manifold'
+    solver_options: str
+      Fast has some limitations
+      Exact is slow but handles most of the cases
+    use_self: Bool
+      Self Intersection, Do self-union or self-intersection
 
     Returns
     ----------
     intersection : **kwargs for a Trimesh object of the
                     volume that is contained by all meshes
     """
+    kwargs.setdefault('solver_options', solver_options)
+    kwargs.setdefault('use_self', use_self)
     result = _engines[engine](meshes, operation="intersection", **kwargs)
     return result
 

trimesh/interfaces/blender.py

@@ -32,19 +32,33 @@
 exists = _blender_executable is not None
 
 
-def boolean(meshes, operation="difference", debug=False):
+def boolean(meshes, operation="difference", solver_options=False, use_self=False, debug=False):
     """
-    Run a boolean operation with multiple meshes using Blender.
+    Run a boolean operation with multiple meshes using Blenderoy.
+    Parameters:
+    - meshes: List of mesh file paths to be processed.
+    - operation: Type of boolean operation ("difference", "union", "intersect").
+    - solver_options: Solver option for the boolean operation, True == 'Exact'
+    - use_self: Boolean indicating whether to consider self-intersections.
+    - debug: If True, run in debug mode to provide additional output for troubleshooting.
+    Returns:
+    - The result of the boolean operation on the provided meshes.
     """
     if not exists:
         raise ValueError("No blender available!")
     operation = str.upper(operation)
     if operation == "INTERSECTION":
         operation = "INTERSECT"
 
+    if solver_options is True:
+        solver_options = 'EXACT'
+    else:
+        solver_options = 'FAST'
     # get the template from our resources folder
     template = resources.get("templates/blender_boolean.py.tmpl")
     script = template.replace("$OPERATION", operation)
+    script = script.replace("$SOLVER_OPTIONS", solver_options)
+    script = script.replace("$USE_SELF", f'{use_self}')
 
     with MeshScript(meshes=meshes, script=script, debug=debug) as blend:
         result = blend.run(_blender_executable + " --background --python $SCRIPT")

trimesh/resources/templates/blender_boolean.py.tmpl

@@ -56,6 +56,8 @@ if __name__ == '__main__':
         mod = mesh.modifiers.new('boolean', 'BOOLEAN')
         mod.object = other
         mod.operation = '$OPERATION'
+        mod.solver = '$SOLVER_OPTIONS'
+        mod.use_self = $USE_SELF
         # used mod.name instead of hard-coded "boolean"
         bpy.ops.object.modifier_apply(modifier=mod.name)