191 lines
6.5 KiB
Python
191 lines
6.5 KiB
Python
import os
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import tempfile
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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
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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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# Mock bpy and dependencies for unit testing
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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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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_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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mock_bpy.path.abspath = lambda path: path.replace("//", "/abs/")
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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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from NodeSlicer.infra.blender.blender_mesh_capture import SlicingGroup, SlicingCollection, SlicingObject
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from NodeSlicer.core.pdf_exporter import (
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extract_unique_top_view_edges,
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extract_lineart_edges,
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export_wireframe_to_pdf,
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MM_TO_PT
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)
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class TestPdfExporter(unittest.TestCase):
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def test_extract_edges_from_slicing_object(self):
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so = SlicingObject()
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# Create a simple triangle in 3D: (0,0,0), (10,0,0), (0,10,0) with normal (0,0,1)
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tri = np.array([
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[0.0, 0.0, 0.0],
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[10.0, 0.0, 0.0],
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[0.0, 10.0, 0.0],
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[0.0, 0.0, 1.0] # Normal
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], dtype=np.float64)
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so.mesh = np.array([tri])
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edges = extract_unique_top_view_edges(so)
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self.assertEqual(len(edges), 3)
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def test_extract_edges_deduplication(self):
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so = SlicingObject()
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# Two triangles sharing an edge (10,0,0) - (0,10,0)
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tri1 = np.array([
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[0.0, 0.0, 0.0],
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[10.0, 0.0, 0.0],
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[0.0, 10.0, 0.0],
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[0.0, 0.0, 1.0]
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], dtype=np.float64)
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tri2 = np.array([
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[10.0, 0.0, 0.0],
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[10.0, 10.0, 0.0],
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[0.0, 10.0, 0.0],
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[0.0, 0.0, 1.0]
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], dtype=np.float64)
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so.mesh = np.array([tri1, tri2])
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edges = extract_unique_top_view_edges(so)
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# Total edges: 3 + 3 - 1 shared = 5 unique edges
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self.assertEqual(len(edges), 5)
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def test_extract_edges_filters_vertical_lines(self):
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so = SlicingObject()
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# Vertical wall in top view (x, y remain constant, z changes) -> degenerate 2D line segment
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tri = np.array([
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[0.0, 0.0, 0.0],
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[0.0, 0.0, 10.0],
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[10.0, 0.0, 0.0],
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[0.0, 1.0, 0.0]
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], dtype=np.float64)
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so.mesh = np.array([tri])
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edges = extract_unique_top_view_edges(so)
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# Vertical edge (0,0,0)-(0,0,10) becomes 2D length 0 and should be filtered out
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self.assertTrue(len(edges) < 3)
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def test_extract_lineart_edges(self):
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so = SlicingObject()
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# Create 2 triangles sharing an edge at 90 degree angle (crease)
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tri1 = np.array([
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[0.0, 0.0, 0.0],
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[10.0, 0.0, 0.0],
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[0.0, 10.0, 0.0],
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[0.0, 0.0, 1.0] # Normal up
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], dtype=np.float64)
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tri2 = np.array([
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[10.0, 0.0, 0.0],
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[10.0, 0.0, 10.0],
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[0.0, 10.0, 0.0],
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[1.0, 0.0, 0.0] # Normal right (90 deg to tri1)
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], dtype=np.float64)
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so.mesh = np.array([tri1, tri2])
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# At max_angle_deg=30, the 90 deg crease edge should be marked
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lineart_30 = extract_lineart_edges(so, max_angle_deg=30.0)
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self.assertTrue(len(lineart_30) > 0)
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# At max_angle_deg=100, crease edge (90 deg) is below threshold, but boundary edges remain
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lineart_100 = extract_lineart_edges(so, max_angle_deg=100.0)
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self.assertTrue(len(lineart_100) > 0)
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def test_export_pdf_true_1_to_1_scale(self):
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edges_2d = np.array([
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[[0.0, 0.0], [100.0, 0.0]],
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[[100.0, 0.0], [100.0, 100.0]],
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[[100.0, 100.0], [0.0, 100.0]],
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[[0.0, 100.0], [0.0, 0.0]]
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], dtype=np.float64)
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margin_mm = 10.0
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with tempfile.TemporaryDirectory() as tmpdir:
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pdf_path = os.path.join(tmpdir, "test_true_scale.pdf")
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export_wireframe_to_pdf(
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edges_2d,
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pdf_path,
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margin_mm=margin_mm,
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stroke_color=(0.1, 0.2, 0.3),
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bg_color=(0.9, 0.95, 1.0)
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)
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self.assertTrue(os.path.exists(pdf_path))
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with open(pdf_path, "rb") as f:
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content = f.read()
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minor_step = 1.0 # main_step 10.0 / 10
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total_margin_mm = margin_mm + 2.0 * minor_step
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expected_w = (100.0 + 2 * total_margin_mm) * MM_TO_PT
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expected_h = (100.0 + 2 * total_margin_mm) * MM_TO_PT
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mediabox_str = f"/MediaBox [0 0 {expected_w:.2f} {expected_h:.2f}]".encode("utf-8")
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self.assertTrue(content.startswith(b"%PDF-1.4"))
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self.assertIn(mediabox_str, content)
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self.assertIn(b"0.900 0.950 1.000 rg", content) # Background color
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self.assertIn(b"0.100 0.200 0.300 RG", content) # Wireframe color
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self.assertIn(b"/GS25 gs", content)
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self.assertIn(b"/GS50 gs", content)
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self.assertIn(b"/GS100 gs", content)
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self.assertTrue(content.endswith(b"%%EOF\n"))
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def test_export_pdf_visualization_styles(self):
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so = SlicingObject()
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tri = np.array([
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[0.0, 0.0, 0.0],
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[100.0, 0.0, 0.0],
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[0.0, 100.0, 0.0],
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[0.0, 0.0, 1.0]
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], dtype=np.float64)
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so.mesh = np.array([tri])
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edges_2d = extract_unique_top_view_edges(so)
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for style in ['WIREFRAME', 'LINEART', 'OUTER_CONTOUR']:
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with tempfile.TemporaryDirectory() as tmpdir:
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pdf_path = os.path.join(tmpdir, f"test_{style}.pdf")
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export_wireframe_to_pdf(
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edges_2d,
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pdf_path,
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style=style,
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crease_angle=30.0,
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raw_geometry=so
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)
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self.assertTrue(os.path.exists(pdf_path))
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with open(pdf_path, "rb") as f:
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content = f.read()
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self.assertTrue(content.startswith(b"%PDF-1.4"))
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self.assertTrue(content.endswith(b"%%EOF\n"))
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if __name__ == '__main__':
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unittest.main()
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