Merge pull request #2205 from mikedh/release/sweep

Release: Closed Sweep
mikedh · Apr 9, 2024 · 2e2c787 · 2e2c787
2 parents e1979b9 + 73bed1f
commit 2e2c787
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diff --git a/Dockerfile b/Dockerfile
@@ -63,7 +63,7 @@ COPY --chown=499 pyproject.toml .
 COPY --chown=499 ./.git ./.git/
 
 USER root
-RUN trimesh-setup --install=test,gltf_validator,llvmpipe,binvox
+RUN trimesh-setup --install=test,gmsh,gltf_validator,llvmpipe,binvox
 USER user
 
 # install things like pytest

diff --git a/docker/trimesh-setup b/docker/trimesh-setup
@@ -46,7 +46,8 @@ config_json = """
       "openscad",
       "curl",
       "git"
-    ]
+    ],
+   "gmsh": ["libxft2", "libxinerama-dev", "libxcursor1","libgomp1"]
   },
   "fetch": {
     "gltf_validator": {

diff --git a/models/featuretype.STEP b/models/featuretype.STEP
diff --git a/pyproject.toml b/pyproject.toml
@@ -5,7 +5,7 @@ requires = ["setuptools >= 61.0", "wheel"]
 [project]
 name = "trimesh"
 requires-python = ">=3.7"
-version = "4.2.4"
+version = "4.3.0"
 authors = [{name = "Michael Dawson-Haggerty", email = "[email protected]"}]
 license = {file = "LICENSE.md"}
 description = "Import, export, process, analyze and view triangular meshes."
@@ -102,6 +102,7 @@ test = [
     "coveralls",
     "pyright",
     "ezdxf",
+    "gmsh>=4.12.1",
     "pytest",
     "pymeshlab",
     "pyinstrument",
@@ -133,7 +134,8 @@ select = [
     "UP", # upgrade
     "W", # style warnings
     "YTT", # sys.version
-    "ISC002"
+    "ISC002",
+    "NPY201"
 ]
 
 ignore = [

diff --git a/tests/data/random_tree.json b/tests/data/random_tree.json
@@ -0,0 +1 @@
+[[0, 710], [0, 906], [0, 758], [1, 205], [1, 82], [2, 750], [3, 323], [3, 209], [7, 999], [8, 394], [9, 298], [9, 224], [10, 850], [12, 619], [13, 179], [14, 178], [14, 218], [15, 740], [15, 307], [16, 248], [19, 788], [20, 817], [20, 155], [22, 512], [22, 773], [23, 534], [27, 75], [27, 994], [28, 718], [30, 708], [30, 353], [31, 810], [32, 683], [33, 191], [33, 20], [34, 955], [36, 635], [36, 329], [36, 964], [36, 421], [37, 511], [38, 876], [39, 347], [39, 712], [39, 193], [40, 552], [40, 937], [40, 956], [41, 18], [41, 789], [41, 133], [42, 843], [43, 19], [43, 803], [43, 918], [45, 979], [46, 467], [46, 625], [47, 692], [48, 469], [49, 854], [51, 720], [56, 342], [59, 576], [61, 902], [62, 526], [62, 184], [62, 226], [63, 171], [63, 451], [63, 974], [64, 233], [64, 995], [65, 456], [65, 117], [67, 89], [67, 481], [67, 950], [67, 340], [70, 328], [71, 546], [72, 857], [72, 360], [72, 610], [73, 547], [75, 110], [75, 483], [77, 647], [78, 614], [80, 620], [80, 258], [82, 252], [82, 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diff --git a/tests/test_creation.py b/tests/test_creation.py
@@ -147,6 +147,7 @@ def test_path_sweep(self):
             vec = g.np.dot(rotmat, vec)
         poly = g.Polygon(perim)
 
+        # --- test open sweep
         # Create 3D path
         angles = g.np.linspace(0, 8 * g.np.pi, 1000)
         x = angles / 10.0
@@ -159,6 +160,19 @@ def test_path_sweep(self):
             mesh = g.trimesh.creation.sweep_polygon(poly, path, engine=engine)
             assert mesh.is_volume
 
+        # --- test closed sweep
+        # Create 3D path
+        angles = g.np.linspace(0, 2 * 0.999 * g.np.pi, 1000)
+        x = g.np.zeros((1000,))
+        y = g.np.cos(angles)
+        z = g.np.sin(angles)
+        path_closed = g.np.c_[x, y, z]
+
+        # Extrude
+        for engine in self.engines:
+            mesh = g.trimesh.creation.sweep_polygon(poly, path_closed, engine=engine)
+            assert mesh.is_volume
+
     def test_annulus(self):
         """
         Basic tests of annular cylinder creation

diff --git a/tests/test_gmsh.py b/tests/test_gmsh.py
@@ -23,11 +23,20 @@ def test_load(self):
         if gmsh is None:
             return
         r = g.trimesh.interfaces.gmsh.load_gmsh(
-            g.os.path.join(g.dir_models, "wrench.STEP")
+            g.os.path.join(g.dir_models, "featuretype.STEP")
         )
         assert isinstance(r, dict)
         assert len(g.trimesh.Trimesh(**r).faces) > 0
 
+    def test_to_volume(self):
+        if gmsh is None:
+            return
+        m = g.trimesh.creation.box()
+
+        r = g.trimesh.interfaces.gmsh.to_volume(mesh=m)
+
+        assert isinstance(r, bytes)
+
 
 if __name__ == "__main__":
     g.trimesh.util.attach_to_log()

diff --git a/tests/test_scenegraph.py b/tests/test_scenegraph.py
@@ -206,13 +206,13 @@ def test_shortest_path(self):
             return
 
         tf = g.trimesh.transformations
-        # start with creating a random tree
-        edgelist = {}
-        tree = g.nx.random_tree(n=1000, seed=0, create_using=g.nx.DiGraph)
-        edges = list(tree.edges)
+        # start with a known good random tree
+        edges = [tuple(row) for row in g.data["random_tree"]]
+        tree = g.nx.from_edgelist(edges, create_using=g.nx.DiGraph)
 
         r_choices = g.random((len(edges), 2))
         r_matrices = g.random_transforms(len(edges))
+        edgelist = {}
         for e, r_choice, r_mat in zip(edges, r_choices, r_matrices):
             data = {}
             if r_choice[0] > 0.5:

diff --git a/tests/test_step.py b/tests/test_step.py
@@ -15,6 +15,12 @@ def test_basic(self):
         s = g.get_mesh("box_sides.STEP")
         assert len(s.geometry) == 10
 
+        b = g.get_mesh("featuretype.STEP")
+        assert len(b.geometry) == 1
+        m = next(iter(b.geometry.values()))
+        m.merge_vertices(merge_tex=True, merge_norm=True)
+        assert m.is_watertight
+
 
 if __name__ == "__main__":
     g.trimesh.util.attach_to_log()

diff --git a/tests/test_sweep.py b/tests/test_sweep.py
@@ -0,0 +1,130 @@
+import numpy as np
+from pyinstrument import Profiler
+from shapely.geometry import Point, Polygon
+
+import trimesh
+from trimesh.creation import sweep_polygon
+
+trimesh.tol.strict = True
+
+
+def arc_2d(final_angle, d=1, start_angle=0, splits=20):
+    xs = np.linspace(start_angle, final_angle, splits)
+    return np.stack((d / 2 * np.cos(xs), d / 2 * np.sin(xs)), axis=1)
+
+
+def test_simple_closed(h1=1, w=2, r=4.4):
+    # a simple closed path
+    square = Polygon([(-0.01, -h1 / 2), (w, -h1 / 2), (w, +h1 / 2), (-0.01, +h1 / 2)])
+    circle = Point([0, 0]).buffer(1.0)
+
+    # a simple square of side `r`
+    path = [[0, 0, 0], [r, 0, 0], [r, r, 0], [0, r, 0], [0, 0, 0]]
+
+    a = sweep_polygon(square, path)
+    assert a.is_volume
+
+    aa = sweep_polygon(square, path, connect=False)
+    assert aa.is_volume
+
+    # should have the same bounds but no longer a volume
+    aaa = sweep_polygon(square, path, connect=False, cap=False)
+    assert np.allclose(aa.bounds, aaa.bounds)
+    assert not aaa.is_volume
+
+    b = sweep_polygon(circle, path)
+    assert b.is_volume
+
+
+def test_simple_extrude(height=10):
+    # make sure sweep behaves okay on a simple single segment path
+    # this should be identical to the extrude operation
+    circle = Point([0, 0]).buffer(1.0)
+
+    # a simple extrusion
+    path = [[0, 0, 0], [0, 0, height]]
+    # will be running asserts inside function
+    b = sweep_polygon(circle, path)
+
+    # should be a straight extrude along Z
+    expected = np.append(np.reshape(circle.bounds, (2, 2)).ptp(axis=0), height)
+    assert np.allclose(expected, b.extents)
+
+    # should be well constructed
+    assert b.is_volume
+    # volume should correspond to expected cylinder area
+    assert np.isclose(b.volume, circle.area * height)
+
+
+def test_simple_open():
+    circle = Point([0, 0]).buffer(1.0)
+    theta = np.linspace(0.0, np.pi, 100)
+    path = np.column_stack([np.cos(theta), np.sin(theta), np.zeros(len(theta))]) * 10
+
+    a = sweep_polygon(circle, path)
+    assert a.is_volume
+
+
+def test_spline_3D():
+    circle = Point([0, 0]).buffer(1.0)
+    # make a 3D noodle using spline smoothing
+    path = trimesh.path.simplify.resample_spline(
+        [[0, 0, 0], [4, 4, 0], [5, 5, 0], [10, 0, 10], [0, 20, 0]], smooth=0.25, count=100
+    )
+
+    a = sweep_polygon(circle, path)
+    assert a.is_volume
+    assert a.body_count == 1
+
+
+def test_screw():
+    h = 200
+    d = 8
+    h1 = 1
+    w = 2
+    d = d - w
+    h2 = h1
+
+    lead = 2
+    splits_per_turn = 4 * 20
+    polygon = np.array([(-0.01, -h1 / 2), (w, -h2 / 2), (w, +h2 / 2), (-0.01, +h1 / 2)])
+    h_ = h + h1
+    n = int(np.ceil(splits_per_turn * h_ / lead))
+    turns = n / splits_per_turn
+    xys = arc_2d(2 * np.pi * turns, d, splits=n)
+    zs = np.linspace(0, h_, n)[:, None]
+    spin_path = np.concatenate((xys, zs), axis=1)
+
+    with Profiler() as P:
+        x = sweep_polygon(Polygon(polygon), spin_path)
+    P.print()
+
+    assert x.is_volume
+    # should have produced a result corresponding to the input dimensions
+    assert np.allclose(x.extents[:2], d + w * 2, atol=0.01)
+    assert np.allclose(x.extents[2], h + h1 * 2, atol=0.01)
+
+    # check without capping: should be the same size just without caps
+    o = sweep_polygon(Polygon(polygon), spin_path, cap=False, connect=False)
+    assert np.allclose(x.bounds, o.bounds)
+    assert not o.is_volume
+
+    # try spinning along an angle
+    sweep_polygon(
+        Polygon(polygon), spin_path, angles=np.linspace(0.0, np.pi / 2, len(spin_path))
+    )
+
+    circle = Point([0, 0]).buffer(1.0)
+    theta = np.linspace(0.0, np.pi, 100)
+    path = np.column_stack([np.cos(theta), np.sin(theta), np.zeros(len(theta))]) * 10
+
+    a = sweep_polygon(circle, path)
+    assert a.is_volume
+
+
+if __name__ == "__main__":
+    test_simple_closed()
+    test_simple_extrude()
+    test_simple_open()
+    test_screw()
+    test_spline_3D()
Original file line number	Diff line number	Diff line change
		@@ -0,0 +1 @@
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