subassembly models setup from SDFormat file

cg/blender/export/collision.py

@@ -0,0 +1,42 @@
+# -*- coding: utf-8 -*-
+"""
+DESCRIPTION.
+STL mesh exporter.
+Exports all objects in scene.
+You can set export path and subdir.
+"""
+__version__ = "0.1"
+
+import logging
+import sys
+import bpy
+import os
+
+logger = logging.getLogger(__name__)
+logging.basicConfig(level=logging.INFO)
+
+
+def export_col_stl(path, subdir=""):
+    """ STL mesh exporter. Exports all objects in scene. """
+    for ob in bpy.context.scene.objects:
+        # deselect all but just one object and make it active
+        bpy.ops.object.select_all(action='DESELECT')
+        ob.select_set(state=True)
+        bpy.context.view_layer.objects.active = ob
+        filename = bpy.context.active_object.name
+        # create collision hull mesh
+        bpy.ops.object.mode_set(mode='EDIT')
+        bpy.ops.mesh.select_all(action='SELECT')
+        bpy.ops.mesh.convex_hull()
+        bpy.ops.object.mode_set(mode='OBJECT')
+        bpy.ops.object.modifier_add(type='DECIMATE')
+        bpy.context.object.modifiers["Decimate"].ratio = 0.2
+
+        # export stl
+        stl_path = os.path.join(path, subdir).replace('\\', '/')
+        if not os.path.isdir(stl_path):
+            os.makedirs(stl_path)
+        outpath = os.path.join(stl_path, filename+'.stl')
+        logger.debug('collision:', outpath)
+
+        bpy.ops.export_mesh.stl(filepath=outpath, check_existing=False, filter_glob='*.stl', use_selection=True, global_scale=1.0, use_scene_unit=False, ascii=False, use_mesh_modifiers=True, batch_mode='OFF', axis_forward='Y', axis_up='Z')