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pv
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ADD map_pattern_to_mesh method
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‎docs/examples/example_mapping_all_patterns.py‎

Lines changed: 4 additions & 89 deletions
Original file line numberDiff line numberDiff line change
@@ -1,57 +1,11 @@
1-
from itertools import filterfalse
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from pathlib import Path
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from compas.colors import Color
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from compas.datastructures import Mesh
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from compas_viewer import Viewer
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from compas_viewer.config import Config
8-
from tessagon.adaptors.list_adaptor import ListAdaptor
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from tessagon.types.brick_tessagon import BrickTessagon
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from tessagon.types.dissected_hex_quad_tessagon import DissectedHexQuadTessagon
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from tessagon.types.dissected_hex_tri_tessagon import DissectedHexTriTessagon
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from tessagon.types.dissected_square_tessagon import DissectedSquareTessagon
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from tessagon.types.dissected_triangle_tessagon import DissectedTriangleTessagon
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from tessagon.types.dodeca_tessagon import DodecaTessagon
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from tessagon.types.floret_tessagon import FloretTessagon
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from tessagon.types.hex_big_tri_tessagon import HexBigTriTessagon
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from tessagon.types.hex_tessagon import HexTessagon
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from tessagon.types.hex_tri_tessagon import HexTriTessagon
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from tessagon.types.octo_tessagon import OctoTessagon
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from tessagon.types.pythagorean_tessagon import PythagoreanTessagon
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from tessagon.types.rhombus_tessagon import RhombusTessagon
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from tessagon.types.square_tessagon import SquareTessagon
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from tessagon.types.square_tri_tessagon import SquareTriTessagon
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from tessagon.types.tri_tessagon import TriTessagon
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from tessagon.types.weave_tessagon import WeaveTessagon
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from tessagon.types.zig_zag_tessagon import ZigZagTessagon
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28-
from compas_libigl.mapping import map_mesh
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from compas_libigl.parametrisation import trimesh_lsc_mapping
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TESSAGON_TYPES = {
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1: ("Hex", HexTessagon),
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2: ("Tri", TriTessagon),
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3: ("Octo", OctoTessagon),
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4: ("Square", SquareTessagon),
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5: ("Rhombus", RhombusTessagon),
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6: ("HexTri", HexTriTessagon),
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7: ("DissectedSquare", DissectedSquareTessagon),
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8: ("DissectedTriangle", DissectedTriangleTessagon),
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9: ("DissectedHexQuad", DissectedHexQuadTessagon),
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10: ("DissectedHexTri", DissectedHexTriTessagon),
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11: ("Floret", FloretTessagon),
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12: ("Pythagorean", PythagoreanTessagon),
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13: ("Brick", BrickTessagon),
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14: ("Weave", WeaveTessagon),
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15: ("ZigZag", ZigZagTessagon),
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16: ("HexBigTri", HexBigTriTessagon),
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17: ("Dodeca", DodecaTessagon),
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18: ("SquareTri", SquareTriTessagon),
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}
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# Pattern selection - change this value to use a different pattern
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PATTERN_TYPE = 15
8+
from compas_libigl.mapping import map_pattern_to_mesh
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# ==============================================================================
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# Input geometry: 3D Mesh
@@ -63,62 +17,23 @@
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x, y, z = mesh.vertex_attributes(vertex, "xyz") # type: ignore
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mesh.vertex_attributes(vertex, "xyz", [x, -z, y])
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66-
mesh.translate([2, 2, 0.5])
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v, f = mesh.to_vertices_and_faces()
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# ==============================================================================
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# Input geometry: 2D Pattern creation using Tessagon library, can be other mesh.
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# ==============================================================================
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options = {
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"function": lambda u, v: [u * 1, v * 1, 0],
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"u_range": [-0.25, 1.25],
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"v_range": [-0.25, 1.25],
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"u_num": 20,
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"v_num": 20,
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"u_cyclic": False,
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"v_cyclic": False,
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"adaptor_class": ListAdaptor,
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}
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# Get pattern name and class based on selected pattern type
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pattern_name, pattern_class = TESSAGON_TYPES[PATTERN_TYPE]
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# Create the selected tessagon pattern
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tessagon = pattern_class(**options)
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tessagon_mesh = tessagon.create_mesh()
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pv = tessagon_mesh["vert_list"]
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pf = tessagon_mesh["face_list"]
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# ==============================================================================
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# Mapping: 3D Mesh, 2D Pattern, UV
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# ==============================================================================
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mv, mf = map_mesh((v, f), (pv, pf), clip_boundaries=True, tolerance=1e-6)
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mesh_mapped = Mesh.from_vertices_and_faces(mv, mf)
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print(len(mv))
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mesh_mapped = map_pattern_to_mesh("ZigZag", mesh, clip_boundaries=True, tolerance=1e-6, pattern_u=10, pattern_v=10)
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# ==============================================================================
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# Viewer
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# ==============================================================================
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config = Config()
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config.camera.target = [2, 2, 0.25]
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config.camera.position = [5, 2, 1.5]
30+
config.camera.target = [0, 0, 0]
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config.camera.position = [0.75, 0, 0.75]
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viewer = Viewer(config=config)
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viewer.scene.add(mesh, name="mesh", show_faces=False, linecolor=Color.grey(), opacity=0.2)
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viewer.scene.add(Mesh.from_vertices_and_faces(pv, pf), name="pattern2d")
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viewer.scene.add(mesh_mapped, name="mesh_mapped", facecolor=Color.red())
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# To see where the pattern is mapped:
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uv = trimesh_lsc_mapping((v, f))
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mesh_flattened = mesh.copy()
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for i in range(mesh.number_of_vertices()):
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mesh_flattened.vertex_attributes(i, "xyz", [uv[i][0], uv[i][1], 0])
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viewer.scene.add(mesh_flattened, name="mesh_flattened", show_lines=False, opacity=0.5)
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viewer.show()

‎src/compas_libigl/mapping.py‎

Lines changed: 109 additions & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -1,6 +1,27 @@
11
import numpy as np
2+
from compas.datastructures import Mesh
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from tessagon.adaptors.list_adaptor import ListAdaptor
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from tessagon.types.brick_tessagon import BrickTessagon
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from tessagon.types.dissected_hex_quad_tessagon import DissectedHexQuadTessagon
6+
from tessagon.types.dissected_hex_tri_tessagon import DissectedHexTriTessagon
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from tessagon.types.dissected_square_tessagon import DissectedSquareTessagon
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from tessagon.types.dissected_triangle_tessagon import DissectedTriangleTessagon
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from tessagon.types.dodeca_tessagon import DodecaTessagon
10+
from tessagon.types.floret_tessagon import FloretTessagon
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from tessagon.types.hex_big_tri_tessagon import HexBigTriTessagon
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from tessagon.types.hex_tessagon import HexTessagon
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from tessagon.types.hex_tri_tessagon import HexTriTessagon
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from tessagon.types.octo_tessagon import OctoTessagon
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from tessagon.types.pythagorean_tessagon import PythagoreanTessagon
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from tessagon.types.rhombus_tessagon import RhombusTessagon
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from tessagon.types.square_tessagon import SquareTessagon
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from tessagon.types.square_tri_tessagon import SquareTriTessagon
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from tessagon.types.tri_tessagon import TriTessagon
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from tessagon.types.weave_tessagon import WeaveTessagon
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from tessagon.types.zig_zag_tessagon import ZigZagTessagon
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from compas_libigl import _mapping
24+
from compas_libigl._types_std import VectorVectorInt # noqa: F401
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526

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def map_mesh(target_mesh, pattern_mesh, clip_boundaries=True, tolerance=1e-6):
@@ -45,3 +66,91 @@ def map_mesh(target_mesh, pattern_mesh, clip_boundaries=True, tolerance=1e-6):
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4667
# Return the result as a tuple
4768
return pattern_v_numpy_copy, pattern_f_numpy_cleaned
69+
70+
71+
def map_pattern_to_mesh(name, mesh, clip_boundaries=True, tolerance=1e-6, pattern_u=16, pattern_v=16):
72+
"""
73+
Map a 2D pattern mesh onto a 3D target.
74+
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Parameters
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----------
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name : str
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The name of the pattern to be created. Options are:
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"Hex",
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"Tri",
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"Octo",
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"Square",
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"Rhombus",
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"HexTri",
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"DissectedSquare",
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"DissectedTriangle",
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"DissectedHexQuad",
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"DissectedHexTri",
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"Floret",
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"Pythagorean",
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"Brick",
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"Weave",
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"ZigZag",
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"HexBigTri",
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"Dodeca",
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"SquareTri"
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mesh : compas.datastructures.Mesh
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The target mesh.
99+
clip_boundaries : bool
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Whether to clip the pattern mesh to the boundaries of the target mesh.
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tolerance : float
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The tolerance for point comparison, to remove duplicates.
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pattern_u : int
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The number of pattern vertices in the u direction.
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pattern_v : int
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The number of pattern vertices in the v direction.
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Returns
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-------
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compas.datastructures.Mesh
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The mapped pattern mesh.
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"""
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TESSAGON_TYPES = {
115+
"Hex": HexTessagon,
116+
"Tri": TriTessagon,
117+
"Octo": OctoTessagon,
118+
"Square": SquareTessagon,
119+
"Rhombus": RhombusTessagon,
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"HexTri": HexTriTessagon,
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"DissectedSquare": DissectedSquareTessagon,
122+
"DissectedTriangle": DissectedTriangleTessagon,
123+
"DissectedHexQuad": DissectedHexQuadTessagon,
124+
"DissectedHexTri": DissectedHexTriTessagon,
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"Floret": FloretTessagon,
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"Pythagorean": PythagoreanTessagon,
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"Brick": BrickTessagon,
128+
"Weave": WeaveTessagon,
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"ZigZag": ZigZagTessagon,
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"HexBigTri": HexBigTriTessagon,
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"Dodeca": DodecaTessagon,
132+
"SquareTri": SquareTriTessagon,
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}
134+
135+
options = {
136+
"function": lambda u, v: [u * 1, v * 1, 0],
137+
"u_range": [-0.255, 1.33],
138+
"v_range": [-0.34, 1.33],
139+
"u_num": pattern_u,
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"v_num": pattern_v,
141+
"u_cyclic": False,
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"v_cyclic": False,
143+
"adaptor_class": ListAdaptor,
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}
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146+
# Create the selected tessagon pattern
147+
pattern_class = TESSAGON_TYPES[name]
148+
tessagon = pattern_class(**options)
149+
tessagon_mesh = tessagon.create_mesh()
150+
pv = tessagon_mesh["vert_list"]
151+
pf = tessagon_mesh["face_list"]
152+
153+
v, f = mesh.to_vertices_and_faces()
154+
mv, mf = map_mesh((v, f), (pv, pf), clip_boundaries=clip_boundaries, tolerance=tolerance)
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156+
return Mesh.from_vertices_and_faces(mv, mf)

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