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Merge pull request #56 from BlockResearchGroup/new_feature_elements_and_interactions
Elements and Interactions
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‎CHANGELOG.md‎

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@@ -40,6 +40,9 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
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* Added `compas_model.models.bvh.ElementBVH`.
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* Added `compas_model.models.bvh.ElementAABBNode`.
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* Added `compas_model.models.bvh.ElementOBBNode`.
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* Added `compas_model.elements.BeamElement`.
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* Added `compas_model.elements.ColumnElement`.
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* Added `compas_model.elements.PlateElement`.
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* Added `compas_model.models.Model.collisions` iterator.
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* Added `compas_model.models.graph.InteractionGraph.clear_edges`.
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‎data/frame.json‎

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{"Model::Line::Segments": [{"dtype": "compas.geometry/Line", "data": {"start": [-3000.0, -3000.0, 0.0], "end": [-3000.0, -3000.0, 3800.0]}, "guid": "fb541808-f597-4887-ad14-dfc9f6986049"}, {"dtype": "compas.geometry/Line", "data": {"start": [-3000.0, 3000.0, 0.0], "end": [-3000.0, 3000.0, 3800.0]}, "guid": "af2c15a8-358e-4a76-9929-09220abb5a37"}, {"dtype": "compas.geometry/Line", "data": {"start": [3000.0, 3000.0, 0.0], "end": [3000.0, 3000.0, 3800.0]}, "guid": "ad7b8d31-4b4c-460f-ba88-015cdbece5ef"}, {"dtype": "compas.geometry/Line", "data": {"start": [3000.0, -3000.0, 0.0], "end": [3000.0, -3000.0, 3800.0]}, "guid": "7984e9ad-322e-43de-a3bf-0b85e71520c3"}, {"dtype": "compas.geometry/Line", "data": {"start": [-3000.0, -3000.0, 3800.0], "end": [-3000.0, 3000.0, 3800.0]}, "guid": "54127e6c-3e59-486f-bdb1-104e3d640608"}, {"dtype": "compas.geometry/Line", "data": {"start": [3000.0, 3000.0, 3800.0], "end": [3000.0, -3000.0, 3800.0]}, "guid": "1c9712d8-c7eb-4b8d-8536-9f6150a8ee61"}, {"dtype": "compas.geometry/Line", "data": {"start": [-3000.0, 3000.0, 3800.0], "end": [3000.0, 3000.0, 3800.0]}, "guid": "ec1ef974-8366-4350-a998-87a0f6f1cd7a"}, {"dtype": "compas.geometry/Line", "data": {"start": [3000.0, -3000.0, 3800.0], "end": [-3000.0, -3000.0, 3800.0]}, "guid": "b59e5ff5-fe5b-42e8-945c-8c6b768617db"}], "Model::Mesh::Floor": [{"dtype": "compas.datastructures/Mesh", "data": {"attributes": {}, "default_vertex_attributes": {"x": 0.0, "y": 0.0, "z": 0.0}, "default_edge_attributes": {}, "default_face_attributes": {}, "vertex": {"0": {"x": -3000.0, "y": -3000.0, "z": 3800.0}, "1": {"x": -3000.0, "y": 3000.0, "z": 3800.0}, "2": {"x": 3000.0, "y": 3000.0, "z": 3800.0}, "3": {"x": 3000.0, "y": -3000.0, "z": 3800.0}}, "face": {"0": [0, 1, 2, 3]}, "facedata": {"0": {}}, "edgedata": {}, "max_vertex": 3, "max_face": 0}, "guid": "0334f95a-f3fa-4e72-9d43-07d5da2b19ee"}]}

‎docs/examples/elements/beam.py‎

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from compas.datastructures import Mesh
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from compas.geometry import Rotation
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from compas.geometry import Translation
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from compas_model.elements import BeamElement
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from compas_model.models import Model
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from compas_viewer import Viewer
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# Create an element.
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beam = BeamElement(0.2, 0.3, 3)
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# Element transformation can be set or modified as an attribute.
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R = Rotation.from_axis_and_angle([0, 1, 0], 3.14 / 2, beam.center_line.midpoint)
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T = Translation.from_vector([0, 0, 1.5])
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beam.transformation = T * R
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# But the transformation is applied when beam.modelgeometry is computed.
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model = Model()
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model.add_element(beam)
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mesh_in_element_space: Mesh = beam.elementgeometry
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mesh_in_model_space: Mesh = beam.modelgeometry
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# Vizualize.
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viewer = Viewer()
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viewer.scene.add(mesh_in_element_space)
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viewer.scene.add(mesh_in_model_space)
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viewer.show()

‎docs/examples/elements/column.py‎

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from compas.geometry import Translation
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from compas_model.elements import ColumnElement
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from compas_model.models import Model
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from compas_viewer import Viewer
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# Create an element.
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column = ColumnElement(0.2, 0.2, 3)
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# Element transformation can be set or modified as an attribute.
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vectors: list[list[float]] = [
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[-3, -3, 0],
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[-3, 3, 0],
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[3, 3, 0],
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[3, -3, 0],
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]
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model = Model()
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for v in vectors:
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column_copy = column.copy()
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column_copy.transformation = Translation.from_vector(v)
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model.add_element(column_copy)
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# Vizualize.
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viewer = Viewer()
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for element in model.elements():
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viewer.scene.add(element.modelgeometry)
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viewer.show()

‎docs/examples/elements/plate.py‎

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from compas.geometry import Polygon
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from compas_model.elements import PlateElement
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from compas_viewer import Viewer
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# Create an element.
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points: list[list[float]] = [
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[-3, -3, 0],
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[-3, 3, 0],
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[3, 3, 0],
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[3, -3, 0],
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]
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polygon: Polygon = Polygon(points)
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plate = PlateElement(polygon=polygon, thickness=0.2)
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# Vizualize.
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viewer = Viewer()
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viewer.scene.add(plate.elementgeometry)
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viewer.show()

‎docs/examples/interactions/000_boolean_modifier.py‎

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from compas.geometry import Rotation
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from compas.geometry import Translation
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from compas_model.elements import BeamElement
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from compas_model.interactions import BooleanModifier
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from compas_model.models import Model
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from compas_viewer import Viewer
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# Create an element.
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beam0: BeamElement = BeamElement(0.2, 0.3, 3, name="beam0")
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beam1: BeamElement = beam0.copy()
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beam1.name = "beam1"
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# Element transformation can be set or modified as an attribute.
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R = Rotation.from_axis_and_angle([0, 1, 0], 3.14 / 2, beam0.center_line.midpoint)
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T = Translation.from_vector([0, 0, 1.5])
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beam0.transformation = T * R # Rotate then translate
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# But the transformation is applied when beam.modelgeometry is computed.
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model = Model()
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model.add_element(beam0)
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model.add_element(beam1)
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model.add_interaction(beam1, beam0)
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model.add_modifier(beam1, beam0, BooleanModifier)
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# Vizualize.
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viewer = Viewer()
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for element in model.elements():
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viewer.scene.add(element.modelgeometry, hide_coplanaredges=True)
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viewer.show()

‎docs/examples/interactions/001_slicer_modifier.py‎

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from compas.geometry import Rotation
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from compas.geometry import Translation
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from compas_model.elements import BeamElement
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from compas_model.interactions import SlicerModifier
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from compas_model.models import Model
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from compas_viewer import Viewer
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# Create an element.
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beam0: BeamElement = BeamElement(0.2, 0.3, 3, name="beam0")
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beam1: BeamElement = beam0.copy()
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beam1.name = "beam1"
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# Element transformation can be set or modified as an attribute.
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R = Rotation.from_axis_and_angle([0, 1, 0], 3.14 / 2, beam0.center_line.midpoint)
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T = Translation.from_vector([0, 0, 1.5])
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beam0.transformation = T * R # Rotate then translate
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# But the transformation is applied when beam.modelgeometry is computed.
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model = Model()
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model.add_element(beam0)
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model.add_element(beam1)
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model.add_interaction(beam0, beam1)
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model.add_modifier(beam0, beam1, SlicerModifier)
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# Vizualize.
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viewer = Viewer()
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for element in model.elements():
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viewer.scene.add(element.modelgeometry, hide_coplanaredges=True)
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viewer.show()

‎docs/examples/interactions/002_frame.py‎

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from pathlib import Path
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from compas import json_dump
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from compas import json_load
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from compas.datastructures import Mesh
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from compas.geometry import Frame
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from compas.geometry import Line
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from compas.geometry import Point
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from compas.geometry import Transformation
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from compas.geometry import Translation
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from compas.geometry import Vector
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from compas.tolerance import TOL
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from compas_model.elements import BeamElement
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from compas_model.elements import ColumnElement
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from compas_model.models import Model
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from compas_viewer import Viewer
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from compas_viewer.config import Config
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# =============================================================================
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# Create Geometry
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# =============================================================================
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points = [
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Point(-3000, -3000, 0),
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Point(-3000, 3000, 0),
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Point(3000, 3000, 0),
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Point(3000, -3000, 0),
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Point(-3000, -3000, 3800),
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Point(-3000, 3000, 3800),
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Point(3000, 3000, 3800),
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Point(3000, -3000, 3800),
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]
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lines = [
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Line(points[0], points[4]),
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Line(points[1], points[5]),
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Line(points[2], points[6]),
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Line(points[3], points[7]),
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Line(points[4], points[5]),
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Line(points[6], points[7]),
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Line(points[5], points[6]),
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Line(points[7], points[4]),
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]
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mesh = Mesh.from_vertices_and_faces(points[4:], [[0, 1, 2, 3]])
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# =============================================================================
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# Serialize Geometry into a JSON file
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# =============================================================================
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model_input = {"Model::Line::Segments": lines, "Model::Mesh::Floor": [mesh]}
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json_dump(model_input, Path("data/frame.json"))
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# =============================================================================
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# Load Geometry from JSON and Create Model
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# =============================================================================
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rhino_geometry = json_load(Path("data/frame.json"))
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lines = rhino_geometry["Model::Line::Segments"]
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model = Model()
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# Add columns
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columns = []
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for i in range(4):
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column = ColumnElement(300, 300, lines[i].length)
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column.transformation = Transformation.from_frame_to_frame(Frame.worldXY(), Frame(lines[i].start))
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model.add_element(column)
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columns.append(column)
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# Add beams
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beams = []
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for i in range(4, len(lines)):
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beam = BeamElement(width=300, depth=700, length=lines[i].length)
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point = lines[i].start
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xaxis = Vector.Zaxis().cross(lines[i].vector)
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yaxis = Vector.Zaxis()
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target_frame = Frame(point, xaxis, yaxis)
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X = Transformation.from_frame_to_frame(Frame.worldXY(), target_frame)
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T = Translation.from_vector([0, beam.depth * -0.5, 0])
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beam.transformation = X * T
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beam.extend(150)
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model.add_element(beam)
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beams.append(beam)
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# Add interactions and modifiers
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for column in columns:
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for beam in beams:
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model.add_interaction(column, beam)
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model.add_modifier(column, beam) # column -> cuts -> beam
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# =============================================================================
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# Visualize Final Model
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# =============================================================================
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config = Config()
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config.camera.target = [0, 0, 100]
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config.camera.position = [10000, -10000, 10000]
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config.camera.near = 10
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config.camera.far = 100000
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viewer = Viewer(config=config)
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for element in model.elements():
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viewer.scene.add(element.modelgeometry, hide_coplanaredges=True)
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viewer.show()

‎src/compas_model/elements/__init__.py‎

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from .element import reset_computed
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from .element import Element
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from .element import Feature
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from .beam import BeamElement
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from .beam import BeamFeature
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from .column import ColumnElement
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from .column import ColumnFeature
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from .plate import PlateElement
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from .plate import PlateFeature
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__all__ = [
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"reset_computed",
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"Element",
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"Feature",
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"BeamElement",
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"BeamFeature",
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"ColumnElement",
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"ColumnFeature",
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"PlateElement",
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"PlateFeature",
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]

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