202 lines
7.5 KiB
Python
202 lines
7.5 KiB
Python
import numpy as np
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import unittest
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from unittest.mock import MagicMock
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import sys
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from pathlib import Path
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# Add workspace directory to sys.path to resolve root package name (NodeSlicer)
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PROJECT_ROOT = Path(__file__).resolve().parent.parent
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sys.path.append(str(PROJECT_ROOT.parent))
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# Define dummy classes to avoid metaclass conflicts
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class DummyNodeSocket: pass
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class DummyNode: pass
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class DummyObject: pass
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class DummyMesh: pass
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class DummyNodeSocketShader: pass
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class DummyNodeCustomGroup: pass
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class DummyNodeTree: pass
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class DummyOperator: pass
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class DummyMenu: pass
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class DummyPanel: pass
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class DummyPropertyGroup: pass
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mock_types = MagicMock()
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mock_types.NodeSocket = DummyNodeSocket
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mock_types.Node = DummyNode
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mock_types.Object = DummyObject
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mock_types.Mesh = DummyMesh
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mock_types.NodeSocketShader = DummyNodeSocketShader
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mock_types.NodeCustomGroup = DummyNodeCustomGroup
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mock_types.NodeTree = DummyNodeTree
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mock_types.Operator = DummyOperator
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mock_types.Menu = DummyMenu
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mock_types.Panel = DummyPanel
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mock_types.PropertyGroup = DummyPropertyGroup
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mock_bpy = MagicMock()
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mock_bpy.context.scene = MagicMock()
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mock_bpy.context.scene.unit_settings.scale_length = 0.001
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mock_bpy.types = mock_types
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sys.modules['bpy'] = mock_bpy
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sys.modules['bpy.types'] = mock_types
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sys.modules['bpy.props'] = MagicMock()
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sys.modules['bpy.utils'] = MagicMock()
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sys.modules['bpy.utils.previews'] = MagicMock()
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sys.modules['bpy.app'] = MagicMock()
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sys.modules['bpy.app.handlers'] = MagicMock()
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from NodeSlicer.infra.blender.blender_mesh_capture import SlicingCollection, SlicingObject
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class TestTransform(unittest.TestCase):
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def test_translate(self):
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# Create a SlicingObject with a single triangle and a normal pointing up (+Z)
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so = SlicingObject()
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so.mesh = np.array([[[1.0, 2.0, 3.0],
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[4.0, 5.0, 6.0],
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[7.0, 8.0, 9.0],
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[0.0, 0.0, 1.0]]], dtype=np.float64)
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# Translate
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so.translate(np.array([10.0, 20.0, 30.0], dtype=np.float64))
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# Normals should remain unchanged, vertices shifted
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np.testing.assert_allclose(so.mesh[0, 0], [11.0, 22.0, 33.0])
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np.testing.assert_allclose(so.mesh[0, 1], [14.0, 25.0, 36.0])
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np.testing.assert_allclose(so.mesh[0, 2], [17.0, 28.0, 39.0])
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np.testing.assert_allclose(so.mesh[0, 3], [0.0, 0.0, 1.0])
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def test_scale_uniform(self):
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so = SlicingObject()
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so.mesh = np.array([[[1.0, 2.0, 3.0],
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[4.0, 5.0, 6.0],
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[7.0, 8.0, 9.0],
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[0.0, 0.0, 1.0]]], dtype=np.float64)
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# Uniform Scale
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so.scale(2.0)
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np.testing.assert_allclose(so.mesh[0, 0], [2.0, 4.0, 6.0])
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np.testing.assert_allclose(so.mesh[0, 3], [0.0, 0.0, 1.0])
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def test_scale_non_uniform(self):
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so = SlicingObject()
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# Normal pointing at (1, 1, 0) normalized: (0.70710678, 0.70710678, 0.0)
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n = np.array([1.0, 1.0, 0.0]) / np.sqrt(2.0)
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so.mesh = np.array([[[1.0, 2.0, 3.0],
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[4.0, 5.0, 6.0],
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[7.0, 8.0, 9.0],
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n]], dtype=np.float64)
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# Scale X by 2, Y by 0.5, Z by 1
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so.scale(np.array([2.0, 0.5, 1.0]))
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# Vertices check
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np.testing.assert_allclose(so.mesh[0, 0], [2.0, 1.0, 3.0])
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# Normals check: non-uniform scale scales normal by inverse transpose, then normalized.
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# Inverse of scale is [0.5, 2.0, 1.0].
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# Rotated normal: (0.7071 / 2, 0.7071 * 2, 0.0) = (0.3535, 1.414, 0.0)
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# Normalized: (0.3535 / sqrt(0.3535^2 + 1.414^2), ...)
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expected_n = np.array([n[0] / 2.0, n[1] / 0.5, 0.0])
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expected_n /= np.linalg.norm(expected_n)
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np.testing.assert_allclose(so.mesh[0, 3], expected_n, rtol=1e-6)
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def test_rotate(self):
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so = SlicingObject()
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so.mesh = np.array([[[1.0, 0.0, 0.0],
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[0.0, 1.0, 0.0],
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[0.0, 0.0, 1.0],
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[0.0, 0.0, 1.0]]], dtype=np.float64)
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# Rotate 90 degrees around Z axis (0, 0, pi/2)
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so.rotate(np.array([0.0, 0.0, np.pi / 2.0]))
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# Vertex [1, 0, 0] rotated around Z by 90 deg -> [0, 1, 0]
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np.testing.assert_allclose(so.mesh[0, 0], [0.0, 1.0, 0.0], atol=1e-7)
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# Vertex [0, 1, 0] rotated around Z by 90 deg -> [-1, 0, 0]
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np.testing.assert_allclose(so.mesh[0, 1], [-1.0, 0.0, 0.0], atol=1e-7)
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# Vertex [0, 0, 1] rotated around Z by 90 deg -> [0, 0, 1]
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np.testing.assert_allclose(so.mesh[0, 2], [0.0, 0.0, 1.0], atol=1e-7)
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# Normal [0, 0, 1] should remain [0, 0, 1]
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np.testing.assert_allclose(so.mesh[0, 3], [0.0, 0.0, 1.0], atol=1e-7)
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def test_collection_cache_invalidation(self):
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so = SlicingObject()
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so.mesh = np.array([[[1.0, 0.0, 0.0],
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[0.0, 1.0, 0.0],
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[0.0, 0.0, 1.0],
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[0.0, 0.0, 1.0]]], dtype=np.float64)
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sc = SlicingCollection([], "coll")
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sc.objects = [so]
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# Access cached properties to populate the cache
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all_v = sc.all_verts
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uniq_v = sc.unique_verts
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self.assertIn("all_verts", sc.__dict__)
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self.assertIn("unique_verts", sc.__dict__)
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# Apply transformation
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sc.translate(np.array([10, 0, 0]))
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# Verify cache was cleared
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self.assertNotIn("all_verts", sc.__dict__)
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self.assertNotIn("unique_verts", sc.__dict__)
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# Verify new values are retrieved when accessed again
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new_all_v = sc.all_verts
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self.assertEqual(new_all_v[0, 0], 11.0)
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def test_transform_node(self):
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from NodeSlicer.core.nodeslicer.nodes.mesh import SLICENODE_TransformGeometry
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# Create a SlicingObject with a single triangle and a normal pointing up (+Z)
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so = SlicingObject()
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so.mesh = np.array([[[1.0, 2.0, 3.0],
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[4.0, 5.0, 6.0],
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[7.0, 8.0, 9.0],
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[0.0, 0.0, 1.0]]], dtype=np.float64)
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sc = SlicingCollection([], "coll")
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sc.objects = [so]
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# Init node
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node = SLICENODE_TransformGeometry()
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# Define mock resolver to return our inputs
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def mock_resolve(fieldname):
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if fieldname == "Mesh":
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return sc
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elif fieldname == "Translation":
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return (10.0, 20.0, 30.0)
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elif fieldname == "Rotation":
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# Rotate 90 degrees around Z axis: (0, 0, pi / 2)
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return (0.0, 0.0, np.pi / 2.0)
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elif fieldname == "Scale":
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return (2.0, 2.0, 2.0)
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return None
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node.resolve = mock_resolve
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# Evaluate output
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result_sc = node.evaluate_output("Mesh")
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self.assertIsNotNone(result_sc)
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# Ensure it's not the same object (deep copied)
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self.assertIsNot(result_sc, sc)
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self.assertIsNot(result_sc.objects[0], so)
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# Let's check coordinates.
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# SRT Order:
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# 1. Scale by 2.0:
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# v0 becomes [2.0, 4.0, 6.0]
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# 2. Rotate by pi/2 around Z:
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# v0 becomes [-4.0, 2.0, 6.0]
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# 3. Translate by [10, 20, 30]:
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# v0 becomes [6.0, 22.0, 36.0]
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np.testing.assert_allclose(result_sc.objects[0].mesh[0, 0], [6.0, 22.0, 36.0], atol=1e-7)
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if __name__ == '__main__':
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unittest.main()
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