h3n3/yet-another-cad-viewer
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lots of performance improvements, bug fixes and some new features

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Yeicor
2024-03-25 21:37:28 +01:00
parent ec7139c809
commit 632e7e93c6
22 changed files with 710 additions and 296 deletions
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23
yacv_server/tessellate.py
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@@ -36,26 +36,26 @@ def tessellate(
shape = Shape(cad_like)
# Perform tessellation tasks
edge_to_faces: Dict[TopoDS_Edge, List[TopoDS_Face]] = {}
vertex_to_faces: Dict[TopoDS_Vertex, List[TopoDS_Face]] = {}
edge_to_faces: Dict[str, List[TopoDS_Face]] = {}
vertex_to_faces: Dict[str, List[TopoDS_Face]] = {}
if faces:
for face in shape.faces():
_tessellate_face(mgr, face.wrapped, tolerance, angular_tolerance)
if edges:
for edge in face.edges():
edge_to_faces[edge.wrapped] = edge_to_faces.get(edge.wrapped, []) + [face.wrapped]
edge_to_faces[_hashcode(edge.wrapped)] = edge_to_faces.get(_hashcode(edge.wrapped), []) + [face.wrapped]
if vertices:
for vertex in face.vertices():
vertex_to_faces[vertex.wrapped] = vertex_to_faces.get(vertex.wrapped, []) + [face.wrapped]
vertex_to_faces[_hashcode(vertex.wrapped)] = vertex_to_faces.get(_hashcode(vertex.wrapped), []) + [face.wrapped]
if edges:
for edge in shape.edges():
_tessellate_edge(mgr, edge.wrapped, edge_to_faces.get(edge.wrapped, []), angular_tolerance,
_tessellate_edge(mgr, edge.wrapped, edge_to_faces.get(_hashcode(edge.wrapped), []), angular_tolerance,
angular_tolerance)
if vertices:
for vertex in shape.vertices():
_tessellate_vertex(mgr, vertex.wrapped, vertex_to_faces.get(vertex.wrapped, []))
_tessellate_vertex(mgr, vertex.wrapped, vertex_to_faces.get(_hashcode(vertex.wrapped), []))
return mgr.gltf
return mgr.build()
def _tessellate_face(
@@ -91,9 +91,9 @@ def _push_point(v: Tuple[float, float, float], faces: List[TopoDS_Face]) -> Tupl
push_dir = (push_dir[0] + normal.X, push_dir[1] + normal.Y, push_dir[2] + normal.Z)
if push_dir != (0, 0, 0):
# Normalize the push direction by the number of faces and a constant factor
# NOTE: Don't overdo it, or metrics will be wrong
n = len(faces) / 1e-3
push_dir = (push_dir[0] / n, push_dir[1] / n, push_dir[2] / n)
# NOTE: Don't overdo it, or metrics will be (more) wrong
n = 1e-3 / len(faces)
push_dir = (push_dir[0] * n, push_dir[1] * n, push_dir[2] * n)
# Push the vertex by the normal
v = (v[0] + push_dir[0], v[1] + push_dir[1], v[2] + push_dir[2])
return v
@@ -119,6 +119,9 @@ def _tessellate_edge(
for i in range(1, discretizer.NbPoints() + 1)
)
]
# Convert strip of vertices to a list of pairs of vertices
vertices = [(vertices[i], vertices[i + 1]) for i in range(len(vertices) - 1)]
mgr.add_edge(vertices)