PolygonModifier — Aspose.3D Python API Reference

from aspose.threed.entities import PolygonModifier

@staticmethod
def triangulate(mesh: Mesh) -> Mesh

from aspose.threed.entities import Mesh, PolygonModifier
from aspose.threed.utilities import Vector4

mesh = Mesh()
for x, z in [(0, 0), (1, 0), (1, 1), (0, 1)]:
    mesh.control_points.append(Vector4(float(x), 0.0, float(z), 1.0))
mesh.create_polygon(0, 1, 2, 3)   # one quad

tri_mesh = PolygonModifier.triangulate(mesh)
print(tri_mesh.polygon_count)     # 2

@staticmethod
def triangulate(scene: Scene) -> None

from aspose.threed import Scene
from aspose.threed.entities import PolygonModifier

scene = Scene.from_file("model_with_quads.obj")
PolygonModifier.triangulate(scene)
scene.save("model_triangulated.stl")

@staticmethod
def triangulate(
    control_points: list[Vector4],
    polygon: list[int],
) -> list[list[int]]

from aspose.threed.entities import PolygonModifier
from aspose.threed.utilities import Vector4

pts = [
    Vector4(0.0, 0.0, 0.0, 1.0),
    Vector4(1.0, 0.0, 0.0, 1.0),
    Vector4(1.0, 1.0, 0.0, 1.0),
    Vector4(0.0, 1.0, 0.0, 1.0),
]
quad_indices = [0, 1, 2, 3]
triangles = PolygonModifier.triangulate(pts, quad_indices)
print(triangles)   # e.g. [[0, 1, 2], [0, 2, 3]]

@staticmethod
def triangulate(
    control_points: list[Vector4],
    polygons: list[list[int]],
    generate_normals: bool = False,
    normals_out: list[Vector3] | None = None,
) -> list[list[int]]

from aspose.threed.entities import PolygonModifier
from aspose.threed.utilities import Vector4, Vector3

pts = [
    Vector4(0, 0, 0, 1), Vector4(1, 0, 0, 1),
    Vector4(1, 1, 0, 1), Vector4(0, 1, 0, 1),
]
polys = [[0, 1, 2, 3]]
normals: list[Vector3] = []
tris = PolygonModifier.triangulate(pts, polys, True, normals)
print(len(tris))     # 2
print(len(normals))  # 2