## PolygonModifier class

Utilities to modify polygons



The PolygonModifier type exposes the following members:

### Methods
| Method | Description |
| :- | :- |
| [`triangulate(, scene)`](/3d/python-net/aspose.threed.entities/polygonmodifier/triangulate/#aspose.threed.scene) | Convert all polygon-based meshes into full triangle mesh |
| [`triangulate(, mesh)`](/3d/python-net/aspose.threed.entities/polygonmodifier/triangulate/#aspose.threed.entities.mesh) | Convert a polygon-based mesh into full triangle mesh |
| [`triangulate(, control_points, polygons, generate_normals, nor_out)`](/3d/python-net/aspose.threed.entities/polygonmodifier/triangulate/#list-list-bool-any) |  |
| [`triangulate(, control_points, polygons)`](/3d/python-net/aspose.threed.entities/polygonmodifier/triangulate/#list-list) |  |
| [`triangulate(, control_points, polygon)`](/3d/python-net/aspose.threed.entities/polygonmodifier/triangulate/#list-list) |  |
| [`triangulate(, control_points)`](/3d/python-net/aspose.threed.entities/polygonmodifier/triangulate/#list) |  |
| [`merge_mesh(, scene)`](/3d/python-net/aspose.threed.entities/polygonmodifier/merge_mesh/#aspose.threed.scene) | Convert a whole scene to a single transformed mesh
<br/>Vertex elements like normal/texture coordinates are not supported yet |
| [`merge_mesh(, nodes)`](/3d/python-net/aspose.threed.entities/polygonmodifier/merge_mesh/#list) |  |
| [`merge_mesh(, node)`](/3d/python-net/aspose.threed.entities/polygonmodifier/merge_mesh/#aspose.threed.node) | Convert a whole node to a single transformed mesh
<br/>Vertex elements like normal/texture coordinates are not supported yet |
| [`scale(, scene, scale)`](/3d/python-net/aspose.threed.entities/polygonmodifier/scale/#aspose.threed.scene-aspose.threed.utilities.vector3) | Scale all geometries(Scale the control points not the transformation matrix) in this scene |
| [`scale(, node, scale)`](/3d/python-net/aspose.threed.entities/polygonmodifier/scale/#aspose.threed.node-aspose.threed.utilities.vector3) | Scale all geometries(Scale the control points not the transformation matrix) in this node |
| [`generate_uv(, mesh, normals)`](/3d/python-net/aspose.threed.entities/polygonmodifier/generate_uv/#aspose.threed.entities.mesh-aspose.threed.entities.vertexelementnormal) | Generate UV data from the given input mesh and specified normal data. |
| [`generate_uv(, mesh)`](/3d/python-net/aspose.threed.entities/polygonmodifier/generate_uv/#aspose.threed.entities.mesh) | Generate UV data from the given input mesh |
| [`split_mesh(, node, policy, create_child_nodes, remove_old_mesh)`](/3d/python-net/aspose.threed.entities/polygonmodifier/split_mesh/#aspose.threed.node-aspose.threed.entities.splitmeshpolicy-bool-bool) | Split mesh into sub-meshes by [`VertexElementMaterial`](/3d/python-net/aspose.threed.entities/vertexelementmaterial).
<br/>Each sub-mesh will use only one material.
<br/>Perform mesh splitting on a node |
| [`split_mesh(, scene, policy, remove_old_mesh)`](/3d/python-net/aspose.threed.entities/polygonmodifier/split_mesh/#aspose.threed.scene-aspose.threed.entities.splitmeshpolicy-bool) | Split mesh into sub-meshes by [`VertexElementMaterial`](/3d/python-net/aspose.threed.entities/vertexelementmaterial).
<br/>Each sub-mesh will use only one material.
<br/>Perform mesh splitting on all nodes of the scene. |
| [`split_mesh(, mesh, policy)`](/3d/python-net/aspose.threed.entities/polygonmodifier/split_mesh/#aspose.threed.entities.mesh-aspose.threed.entities.splitmeshpolicy) | Split mesh into sub-meshes by [`VertexElementMaterial`](/3d/python-net/aspose.threed.entities/vertexelementmaterial).
<br/>Each sub-mesh will use only one material.
<br/>The original mesh will not get changed. |
| [`build_tangent_binormal(, scene)`](/3d/python-net/aspose.threed.entities/polygonmodifier/build_tangent_binormal/#aspose.threed.scene) | This will create tangent and binormal on all meshes of the scene
<br/>Normal is required, if normal is not existing on the mesh, it will also create the normal data from position.
<br/>UV is also required, the mesh will be ignored if no UV is defined. |
| [`build_tangent_binormal(, mesh)`](/3d/python-net/aspose.threed.entities/polygonmodifier/build_tangent_binormal/#aspose.threed.entities.mesh) | This will create tangent and binormal on the mesh
<br/>Normal is required, if normal is not existing on the mesh, it will also create the normal data from position.
<br/>UV is also required, an exception will be raised if no UV found. |
| [`apply_transform(, node, transform)`](/3d/python-net/aspose.threed.entities/polygonmodifier/apply_transform/#aspose.threed.node-aspose.threed.utilities.matrix4) | Apply transform matrix on control points of all geometries |
| [`generate_normal(, mesh)`](/3d/python-net/aspose.threed.entities/polygonmodifier/generate_normal/#aspose.threed.entities.mesh) | Generate normal data from Mesh definition |



### See Also
* module [`aspose.threed.entities`](..)
* class [`VertexElementMaterial`](/3d/python-net/aspose.threed.entities/vertexelementmaterial)