Patch class

A Patch is a parametric modeling surface, similar to NurbsSurface, it’s also defined by two PatchDirection, the Patch.u and Patch.v.

Inheritance: Patch → Geometry → Entity → SceneObject → A3DObject

The Patch type exposes the following members:

Constructor	Description
`__init__(self)`	Initializes a new instance of the `Patch` class.
`__init__(self, name)`	Initializes a new instance of the `Patch` class.

Property	Description
name	Gets or sets the name.
properties	Gets the collection of all properties.
scene	Gets the scene that this object belongs to
parent_nodes	Gets all parent nodes, an entity can be attached to multiple parent nodes for geometry instancing
excluded	Gets or sets whether to exclude this entity during exporting.
parent_node	Gets or sets the first parent node, if set the first parent node, this entity will be detached from other parent nodes.
visible	Gets or sets if the geometry is visible
deformers	Gets all deformers associated with this geometry.
control_points	Gets all control points
cast_shadows	Gets or sets whether this geometry can cast shadow
receive_shadows	Gets or sets whether this geometry can receive shadow.
vertex_elements	Gets all vertex elements
u	Gets the u direction.
v	Gets the v direction.

Method	Description
`remove_property(self, property)`	Removes a dynamic property.
`remove_property(self, property)`	Remove the specified property identified by name
`create_element(self, type)`	Creates a vertex element with specified type and add it to the geometry.
`create_element(self, type, mapping_mode, reference_mode)`	Creates a vertex element with specified type and add it to the geometry.
`create_element_uv(self, uv_mapping)`	Creates a `VertexElementUV` with given texture mapping type.
`create_element_uv(self, uv_mapping, mapping_mode, reference_mode)`	Creates a `VertexElementUV` with given texture mapping type.
`get_property(self, property)`	Get the value of specified property
`set_property(self, property, value)`	Sets the value of specified property
`find_property(self, property_name)`	Finds the property. It can be a dynamic property (Created by CreateDynamicProperty/SetProperty) or native property(Identified by its name)
`get_bounding_box(self)`	Gets the bounding box of current entity in its object space coordinate system.
`get_entity_renderer_key(self)`	Gets the key of the entity renderer registered in the renderer
`get_element(self, type)`	Gets a vertex element with specified type
`get_vertex_element_of_uv(self, texture_mapping)`	Gets a `VertexElementUV` instance with given texture mapping type
`add_element(self, element)`	Adds an existing vertex element to current geometry