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See #1227. Test script for priority-aware wall layer joins.
This commit is contained in:
Dion Moult
@@ -0,0 +1,325 @@
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import numpy as np
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import ifcopenshell
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import ifcopenshell.api.root
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import ifcopenshell.api.type
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import ifcopenshell.api.unit
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import ifcopenshell.api.project
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import ifcopenshell.api.context
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import ifcopenshell.api.spatial
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import ifcopenshell.api.material
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import ifcopenshell.api.geometry
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import ifcopenshell.util.shape_builder
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import ifcopenshell.util.element
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# from ifcopenshell.util.shape_builder import VectorType, SequenceOfVectors
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from collections import namedtuple
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f = ifcopenshell.api.project.create_file()
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ifcopenshell.api.root.create_entity(f, ifc_class="IfcProject")
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meters = ifcopenshell.api.unit.add_si_unit(f)
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ifcopenshell.api.unit.assign_unit(f, units=[meters])
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model = ifcopenshell.api.context.add_context(f, context_type="Model")
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plan = ifcopenshell.api.context.add_context(f, context_type="Plan")
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axis = ifcopenshell.api.context.add_context(
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f, context_type="Plan", context_identifier="Axis", target_view="GRAPH_VIEW", parent=plan
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)
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body = ifcopenshell.api.context.add_context(
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f, context_type="Model", context_identifier="Body", target_view="MODEL_VIEW", parent=model
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)
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concrete = ifcopenshell.api.material.add_material(f, name="concrete", category="concrete")
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site = ifcopenshell.api.root.create_entity(f, ifc_class="IfcSite")
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builder = ifcopenshell.util.shape_builder.ShapeBuilder(f)
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def test_wall(offset, p1, p2, p3, p4):
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offset *= 1.5
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wall_type_a = ifcopenshell.api.root.create_entity(f, ifc_class="IfcWallType", name="A")
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wall_type_b = ifcopenshell.api.root.create_entity(f, ifc_class="IfcWallType", name="B")
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set_a = ifcopenshell.api.material.add_material_set(f, set_type="IfcMaterialLayerSet")
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structure = ifcopenshell.api.material.add_layer(f, layer_set=set_a, material=concrete, name="structure")
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structure.Priority = p1
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structure.LayerThickness = 0.1
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cladding = ifcopenshell.api.material.add_layer(f, layer_set=set_a, material=concrete, name="cladding")
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cladding.Priority = p2
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cladding.LayerThickness = 0.05
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set_b = ifcopenshell.api.material.add_material_set(f, set_type="IfcMaterialLayerSet")
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structure = ifcopenshell.api.material.add_layer(f, layer_set=set_b, material=concrete, name="structure")
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structure.Priority = p3
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structure.LayerThickness = 0.1
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cladding = ifcopenshell.api.material.add_layer(f, layer_set=set_b, material=concrete, name="cladding")
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cladding.Priority = p4
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cladding.LayerThickness = 0.05
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ifcopenshell.api.material.assign_material(f, products=[wall_type_a], material=set_a)
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ifcopenshell.api.material.assign_material(f, products=[wall_type_b], material=set_b)
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for i, rotation in enumerate((-90, -60, -120, 90, 60, 120)):
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wall_a = ifcopenshell.api.root.create_entity(f, ifc_class="IfcWall", name=f"A{p1}{p2}")
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wall_b = ifcopenshell.api.root.create_entity(f, ifc_class="IfcWall", name=f"B{p3}{p4}")
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ifcopenshell.api.spatial.assign_container(f, products=[wall_a, wall_b], relating_structure=site)
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ifcopenshell.api.type.assign_type(f, related_objects=[wall_a], relating_type=wall_type_a)
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ifcopenshell.api.type.assign_type(f, related_objects=[wall_b], relating_type=wall_type_b)
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axis_a = builder.polyline(((0.0, 0.0), (1.0, 0.0)))
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axis_b = builder.polyline(((0.0, 0.0), (1.0, 0.0)))
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rep_a = builder.get_representation(axis, [axis_a])
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rep_b = builder.get_representation(axis, [axis_b])
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ifcopenshell.api.geometry.assign_representation(f, product=wall_a, representation=rep_a)
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ifcopenshell.api.geometry.assign_representation(f, product=wall_b, representation=rep_b)
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x_offset = i * 2
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sign_offset = 0 if rotation < 0 else 1
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matrix_a = np.eye(4)
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matrix_a[:, 3][0:3] = (0 + x_offset, 0 + offset + sign_offset, 0)
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matrix_b = np.eye(4)
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matrix_b = ifcopenshell.util.placement.rotation(rotation, "Z") @ matrix_b
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matrix_b[:, 3][0:3] = (1 + x_offset, 1 + offset - sign_offset, 0)
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ifcopenshell.api.geometry.edit_object_placement(f, product=wall_a, matrix=matrix_a)
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ifcopenshell.api.geometry.edit_object_placement(f, product=wall_b, matrix=matrix_b)
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ifcopenshell.api.geometry.connect_path(
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f, relating_element=wall_a, related_element=wall_b, relating_connection="ATEND", related_connection="ATEND"
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)
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Foo(f, body).regenerate(wall_a)
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Foo(f, body).regenerate(wall_b)
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PrioritisedLayer = namedtuple("PrioritisedLayer", "priority thickness")
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class Foo:
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def __init__(self, file, body):
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self.file = file
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self.body = body
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def regenerate(self, wall):
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print("-" * 100)
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print(wall)
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layers = self.get_layers(wall)
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if not layers:
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return
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axes = self.get_axes(wall, layers)
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self.start_points = []
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self.end_points = []
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for rel in wall.ConnectedTo:
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if rel.is_a("IfcRelConnectsPathElements"):
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wall2 = rel.RelatedElement
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layers1 = self.combine_layers(layers.copy(), rel.RelatingPriorities)
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layers2 = self.combine_layers(self.get_layers(wall2), rel.RelatedPriorities)
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if not layers1 or not layers2:
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continue
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self.join(wall, wall2, layers1, layers2, rel.RelatingConnectionType, rel.RelatedConnectionType)
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for rel in wall.ConnectedFrom:
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if rel.is_a("IfcRelConnectsPathElements"):
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wall2 = rel.RelatingElement
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layers1 = self.combine_layers(layers.copy(), rel.RelatedPriorities)
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layers2 = self.combine_layers(self.get_layers(wall2), rel.RelatingPriorities)
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if not layers1 or not layers2:
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continue
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self.join(wall, wall2, layers1, layers2, rel.RelatedConnectionType, rel.RelatingConnectionType)
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# for rel in wall.ConnectedFrom:
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# if rel.is_a("IfcRelConnectsPathElements"):
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# connection = rel.RelatedConnectionType
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if not self.start_points:
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minx = axes[0][0][0]
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self.start_points = [
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np.array((minx, axes[0][0][1])),
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np.array((minx, axes[-1][0][1])),
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]
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if not self.end_points:
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maxx = axes[0][1][0]
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self.end_points = [
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np.array((maxx, axes[0][0][1])),
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np.array((maxx, axes[-1][0][1])),
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]
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print("FINISHED")
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print(self.start_points)
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print(self.end_points)
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points = []
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if self.start_points[0][1] < self.start_points[-1][1]:
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points.extend((self.start_points))
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else:
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points.extend(reversed(self.start_points))
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if self.end_points[0][1] > self.end_points[-1][1]:
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points.extend((self.end_points))
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else:
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points.extend(reversed(self.end_points))
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builder = ifcopenshell.util.shape_builder.ShapeBuilder(wall.file)
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item = builder.extrude(builder.polyline(points, closed=True), magnitude=1.0)
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rep = builder.get_representation(self.body, items=[item])
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ifcopenshell.api.geometry.assign_representation(self.file, product=wall, representation=rep)
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def join(self, wall1, wall2, layers1, layers2, connection1, connection2):
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if connection1 == "NOTDEFINED" or connection2 == "NOTDEFINED":
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return
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print("joining", wall1, layers1, connection1)
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print("to", wall2, layers2, connection2)
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# axes = self.get_axes(wall2, layers2)
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axes1 = self.get_axes(wall1, layers1)
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axes2 = self.get_axes(wall2, layers2)
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matrix1i = np.linalg.inv(ifcopenshell.util.placement.get_local_placement(wall1.ObjectPlacement))
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matrix2 = ifcopenshell.util.placement.get_local_placement(wall2.ObjectPlacement)
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print(axes1)
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print(axes2)
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# Convert wall2 axes to wall1 local coordinates
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for axis in axes2:
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axis[0] = (matrix1i @ matrix2 @ np.concatenate((axis[0], (0, 1))))[:2]
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axis[1] = (matrix1i @ matrix2 @ np.concatenate((axis[1], (0, 1))))[:2]
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# Sort axes from interior to exterior
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if connection1 == "ATEND":
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if axes2[0][0][0] > axes2[-1][0][0]: # We process layers in a +X direction
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axes2 = list(reversed(axes2))
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layers2 = list(reversed(layers2))
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elif connection1 == "ATSTART":
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if axes2[-1][0][0] > axes2[0][0][0]: # We process layers in a -X direction
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axes2 = list(reversed(axes2))
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layers2 = list(reversed(layers2))
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# wall2_x = matrix2[:,0][:2]
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axis2 = axes2[0] # Take an arbitrary axis
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if connection2 == "ATSTART":
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axis2 = [axis2[1], axis2[0]] # Flip direction so the axis "points" in the direction of join
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if axis2[0][1] < axis2[1][1]: # Pointing +Y
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if axes1[-1][0][1] < axes1[0][0][1]: # We process layers1 in a +Y direction
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axes1 = list(reversed(axes1))
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layers1 = list(reversed(layers1))
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else: # Pointing -Y
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if axes1[0][0][1] < axes1[-1][0][1]: # We process layers1 in a -Y direction
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axes1 = list(reversed(axes1))
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layers1 = list(reversed(layers1))
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print("modified")
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print(axes1)
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print(axes2)
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# Checked
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last_y = axes1[-1][0][1]
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ys = iter([a[0][1] for a in axes1])
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print("ys are", [a[0][1] for a in axes1])
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last_axis2 = axes2[-1]
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axes2 = iter(axes2)
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axis2 = next(axes2)
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y = next(ys)
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x = self.intersect_axis(*axis2, y=y)
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points = [np.array((x, y))]
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print("first point", points)
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layers1 = iter(layers1)
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layers2 = iter(layers2)
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layer1 = next(layers1, None)
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layer2 = next(layers2, None)
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while layer1 and layer2:
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print("considering", layer1, layer2)
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if layer1.priority > layer2.priority:
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axis2 = next(axes2)
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x = self.intersect_axis(*axis2, y=y)
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layer2 = next(layers2, None)
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elif layer2.priority > layer1.priority:
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y = next(ys)
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x = self.intersect_axis(*axis2, y=y)
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layer1 = next(layers1, None)
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else:
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y = next(ys)
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x = self.intersect_axis(*next(axes2), y=y)
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layer1 = next(layers1, None)
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layer2 = next(layers2, None)
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points.append(np.array((x, y)))
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print("points", points)
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if points[-1][1] != last_y:
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points.append(np.array((self.intersect_axis(*last_axis2, y=last_y), last_y)))
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print("fpoints", points)
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if connection1 == "ATSTART":
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self.start_points = points
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elif connection1 == "ATEND":
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self.end_points = points
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def get_layers(self, wall) -> list:
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material = ifcopenshell.util.element.get_material(wall, should_skip_usage=True)
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if not material or not material.is_a("IfcMaterialLayerSet"):
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return []
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return [PrioritisedLayer(l.Priority or 0, l.LayerThickness) for l in material.MaterialLayers]
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def combine_layers(self, layers, override_priorities):
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results = []
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if override_priorities:
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for i, priority in enumerate(override_priorities[: len(layers)]):
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layers[i][0] = priority
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if not layers:
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return []
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results = [layers.pop(0)]
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for layer in layers:
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if not layer.thickness:
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continue
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if layer.priority == results[-1].priority:
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results[-1] = PrioritisedLayer(layer.priority, results[-1].thickness + layer.thickness)
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else:
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results.append(layer)
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return results
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def intersect_axis(self, p1, p2, y=0):
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# Assumes lines are horizontal
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x1, y1 = p1
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x2, y2 = p2
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t = (y - y1) / (y2 - y1)
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return x1 + t * (x2 - x1)
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def get_axes(self, wall, layers: list[PrioritisedLayer]):
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# I think it's not actually necessary to get the exact axis line here.
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axes = []
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# Start by getting Reference line
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if axis := ifcopenshell.util.representation.get_representation(wall, "Plan", "Axis", "GRAPH_VIEW"):
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for item in ifcopenshell.util.representation.resolve_representation(axis).Items:
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if item.is_a("IfcPolyline"):
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points = item.Points
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elif item.is_a("IfcIndexedPolyCurve"):
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points = item.Points.CoordList
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else:
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continue
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if points[0][0] < points[1][0]: # An axis always goes in the +X direction
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axes.append([np.array(points[0]), np.array(points[1])])
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else:
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axes.append([np.array(points[1]), np.array(points[0])])
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break
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else:
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# TODO: derive from existing geometry
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axes.append([np.array((0.0, 0.0)), np.array((1.0, 0.0))])
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# Apply usage to convert the Reference line into MlsBase
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sense_factor = 1
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if (usage := ifcopenshell.util.element.get_material(wall)) and usage.is_a("IfcMaterialLayerSetUage"):
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for point in axes[0]:
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point[1] += usage.OffsetFromReferenceLine
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sense_factor = 1 if usage.DirectionSense == "POSITIVE" else -1
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for layer in layers:
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axes.append([p.copy() + np.array((0.0, layer.thickness * sense_factor)) for p in axes[-1]])
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return axes
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test_wall(0, 1, 1, 1, 1)
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test_wall(1, 2, 1, 1, 2)
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test_wall(2, 2, 1, 1, 1)
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test_wall(3, 1, 2, 1, 1)
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test_wall(4, 1, 2, 1, 2)
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test_wall(5, 3, 1, 2, 4)
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f.write("/home/dion/wall.ifc")
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