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Linking in models now uses the same cartesian point offset strategy as loading models with a dynamic distance limit

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Previously, it would have a hardcoded 1km distance limit and any "far away" object would be treated as a chunk instead of an occurrence. Now it has dynamic distance limits and benefit from occurrence instancing.
This commit is contained in:
Dion Moult
2024-06-17 17:03:42 +10:00
parent 743a197542
commit 9c61a9eed7
3 changed files with 87 additions and 56 deletions
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src/blenderbim/blenderbim/bim/module/project/operator.py
+35 -12
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@@ -1326,7 +1326,8 @@ class LoadLinkedProject(bpy.types.Operator):
shape = iterator.get()
results.add(self.file.by_id(shape.id))
if len(shape.geometry.faces) > 1000 and self.is_local(shape): # 333 tris
# Elements with a lot of geometry benefit from instancing to save memory
if len(shape.geometry.faces) > 1000: # 333 tris
self.process_occurrence(shape)
if not iterator.next():
if not chunked_verts:
@@ -1373,10 +1374,19 @@ class LoadLinkedProject(bpy.types.Operator):
chunked_material_ids.append(mi + material_offset + 1)
material_offset += len(ms)
M4 = np.frombuffer(shape.transformation_buffer).reshape((4, 4), order="F")
matrix = np.frombuffer(shape.transformation_buffer).reshape((4, 4), order="F")
if gprops.has_blender_offset:
matrix = ifcopenshell.util.geolocation.global2local(
matrix,
float(gprops.blender_offset_x) * self.unit_scale,
float(gprops.blender_offset_y) * self.unit_scale,
float(gprops.blender_offset_z) * self.unit_scale,
float(gprops.blender_x_axis_abscissa),
float(gprops.blender_x_axis_ordinate),
)
vs = np.frombuffer(shape.geometry.verts_buffer).reshape((-1, 3))
vs = np.hstack((vs, np.ones((len(vs), 1))))
vs = (np.asmatrix(M4) * np.asmatrix(vs).T).T.A
vs = (np.asmatrix(matrix) * np.asmatrix(vs).T).T.A
vs = vs[:, :3].flatten()
fs = np.frombuffer(shape.geometry.faces_buffer, dtype=np.int32)
chunked_verts.append(vs)
@@ -1457,14 +1467,6 @@ class LoadLinkedProject(bpy.types.Operator):
print("Finished", time.time() - start)
return {"FINISHED"}
def is_local(self, shape: ShapeElementType) -> bool:
m = shape.transformation.matrix
if max([abs(co) for co in (m[9], m[10], m[11])]) > 1000:
return False
elif max([abs(co) for co in shape.geometry.verts[0:3]]) > 1000:
return False
return True
def process_occurrence(self, shape: ShapeElementType) -> None:
element = self.file.by_id(shape.id)
faces = shape.geometry.faces
@@ -1478,6 +1480,27 @@ class LoadLinkedProject(bpy.types.Operator):
if not mesh:
mesh = bpy.data.meshes.new("Mesh")
geometry = shape.geometry
gprops = bpy.context.scene.BIMGeoreferenceProperties
if (
gprops.has_blender_offset
and geometry.verts
and tool.Loader.is_point_far_away(
(geometry.verts[0], geometry.verts[1], geometry.verts[2]), is_meters=True
)
):
# Shift geometry close to the origin based off that first vert it found
verts_array = np.array(geometry.verts)
offset = np.array([-geometry.verts[0], -geometry.verts[1], -geometry.verts[2]])
offset_verts = verts_array + np.tile(offset, len(verts_array) // 3)
verts = offset_verts.tolist()
mesh["has_cartesian_point_offset"] = True
mesh["cartesian_point_offset"] = f"{geometry.verts[0]},{geometry.verts[1]},{geometry.verts[2]}"
else:
verts = geometry.verts
mesh["has_cartesian_point_offset"] = False
material_to_slot = {}
max_slot_index = 0
@@ -1525,7 +1548,7 @@ class LoadLinkedProject(bpy.types.Operator):
self.meshes[shape.geometry.id] = mesh
obj = bpy.data.objects.new(tool.Loader.get_name(element), mesh)
obj.matrix_world = Matrix(mat.tolist())
obj.matrix_world = tool.Loader.apply_blender_offset_to_matrix_world(obj, mat)
obj["guids"] = [shape.guid]
obj["guid_ids"] = [len(mesh.polygons)]