TransformBlendTable¶

class TransformBlendTable¶

Bases: CopyOnWriteObject

This structure collects together the different combinations of transforms and blend amounts used by a GeomVertexData, to facilitate computing dynamic vertices on the CPU at runtime. Each vertex has a pointer to exactly one of the entries in this table, and each entry defines a number of transform/blend combinations.

This structure is used for a GeomVertexData set up to compute its dynamic vertices on the CPU. See TransformTable for one set up to compute its dynamic vertices on the graphics card.

Inheritance diagram

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TransformBlendTable.__init__()¶

TransformBlendTable.add_blend()¶: Adds a new blend to the table, and returns its index number. If there is already an identical blend in the table, simply returns that number instead.

TransformBlendTable.assign()¶

TransformBlendTable.get_blend()¶: Returns the nth blend in the table.

static TransformBlendTable.get_class_type()¶

TransformBlendTable.get_max_simultaneous_transforms()¶: Returns the maximum number of unique VertexTransform objects that are applied to any one vertex simultaneously. This is the same limit reflected by GraphicsStateGuardian::get_max_vertex_transforms().

TransformBlendTable.get_modified()¶: Returns a counter which is guaranteed to increment at least when any TransformBlends within the table have changed.

TransformBlendTable.get_num_blends()¶: Returns the total number of different blend combinations in the table.

TransformBlendTable.get_num_transforms()¶: Returns the number of unique VertexTransform objects represented in the table. This will correspond to the size of the TransformTable object that would represent the same table. This is also the same limit reflected by GraphicsStateGuardian::get_max_vertex_transform_indices().

TransformBlendTable.get_rows()¶: Returns the subset of rows (vertices) in the associated GeomVertexData that this TransformBlendTable actually affects.

TransformBlendTable.modify_rows()¶: Returns a modifiable reference to the SparseArray that specifies the subset of rows (vertices) in the associated GeomVertexData that this TransformBlendTable actually affects.

TransformBlendTable.remove_blend()¶: Removes the blend at the nth position.

TransformBlendTable.set_blend()¶: Replaces the blend at the nth position with the indicated value.

TransformBlendTable.set_rows()¶: Specifies the subset of rows (vertices) in the associated GeomVertexData that this TransformBlendTable actually affects.

TransformBlendTable.write()¶