Delete intersection.py

src/ifcblender/io_import_scene_ifc/intersection.py

@@ -1,103 +0,0 @@
-import bpy
-import bmesh
-
-def bmesh_copy_from_object(obj, transform=True, triangulate=True, apply_modifiers=False):
-    """
-    Returns a transformed, triangulated copy of the mesh
-    """
-
-    assert(obj.type == 'MESH')
-
-    if apply_modifiers and obj.modifiers:
-        me = obj.to_mesh(bpy.context.scene, True, 'PREVIEW', calc_tessface=False)
-        bm = bmesh.new()
-        bm.from_mesh(me)
-        bpy.data.meshes.remove(me)
-    else:
-        me = obj.data
-        if obj.mode == 'EDIT':
-            bm_orig = bmesh.from_edit_mesh(me)
-            bm = bm_orig.copy()
-        else:
-            bm = bmesh.new()
-            bm.from_mesh(me)
-
-    # Remove custom data layers to save memory
-    for elem in (bm.faces, bm.edges, bm.verts, bm.loops):
-        for layers_name in dir(elem.layers):
-            if not layers_name.startswith("_"):
-                layers = getattr(elem.layers, layers_name)
-                for layer_name, layer in layers.items():
-                    layers.remove(layer)
-
-    if transform:
-        bm.transform(obj.matrix_world)
-
-    if triangulate:
-        bmesh.ops.triangulate(bm, faces=bm.faces)
-
-    return bm
-
-def bmesh_check_intersect_objects(obj, obj2):
-    """
-    Check if any faces intersect with the other object
-
-    returns a boolean
-    """
-    assert(obj != obj2)
-
-    # Triangulate
-    bm = bmesh_copy_from_object(obj, transform=True, triangulate=True)
-    bm2 = bmesh_copy_from_object(obj2, transform=True, triangulate=True)
-
-    # If bm has more edges, use bm2 instead for looping over its edges
-    # (so we cast less rays from the simpler object to the more complex object)
-    if len(bm.edges) > len(bm2.edges):
-        bm2, bm = bm, bm2
-
-    # Create a real mesh (lame!)
-    scene = bpy.context.scene
-    me_tmp = bpy.data.meshes.new(name="~temp~")
-    bm2.to_mesh(me_tmp)
-    bm2.free()
-    obj_tmp = bpy.data.objects.new(name=me_tmp.name, object_data=me_tmp)
-    scene.objects.link(obj_tmp)
-    scene.update()
-    ray_cast = obj_tmp.ray_cast
-
-    intersect = False
-
-    EPS_NORMAL = 0.000001
-    EPS_CENTER = 0.01  # should always be bigger
-
-    #for ed in me_tmp.edges:
-    for ed in bm.edges:
-        v1, v2 = ed.verts
-
-        # setup the edge with an offset
-        co_1 = v1.co.copy()
-        co_2 = v2.co.copy()
-        co_mid = (co_1 + co_2) * 0.5
-        no_mid = (v1.normal + v2.normal).normalized() * EPS_NORMAL
-        co_1 = co_1.lerp(co_mid, EPS_CENTER) + no_mid
-        co_2 = co_2.lerp(co_mid, EPS_CENTER) + no_mid
-
-        co, no, index = ray_cast(co_1, co_2)
-        if index != -1:
-            intersect = True
-            break
-
-    scene.objects.unlink(obj_tmp)
-    bpy.data.objects.remove(obj_tmp)
-    bpy.data.meshes.remove(me_tmp)
-
-    scene.update()
-
-    return intersect
-
-
-obj = bpy.context.object
-obj2 = (ob for ob in bpy.context.selected_objects if ob != obj).__next__()
-intersect = bmesh_check_intersect_objects(obj, obj2)
-
-print("There are%s intersections." % ("" if intersect else " NO"))