panda3d.core.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

__init__() → None¶

__init__(copy: TransformBlendTable) → None

addBlend(blend: TransformBlend) → size_t¶

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.

Return type: size_t

assign(copy: TransformBlendTable) → TransformBlendTable¶

Return type: TransformBlendTable

property blends¶

Getter: Returns the nth blend in the table.
Setter: Replaces the blend at the nth position with the indicated value.

Return type: Sequence[TransformBlend]

getBlend(n: size_t) → TransformBlend¶

Returns the nth blend in the table.

Return type: TransformBlend

getBlends() → list¶

static getClassType() → TypeHandle¶

Return type: TypeHandle

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

getModified(current_thread: Thread) → UpdateSeq¶

Returns a counter which is guaranteed to increment at least when any TransformBlends within the table have changed.

Return type: UpdateSeq

getNumBlends() → size_t¶

Returns the total number of different blend combinations in the table.

Return type: size_t

getNumTransforms() → int¶: 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.getMaxVertexTransformIndices().

getRows() → SparseArray¶

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

Return type: SparseArray

property 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.getMaxVertexTransforms().

Return type: int

property modified¶

Returns a counter which is guaranteed to increment at least when any TransformBlends within the table have changed.

Return type: UpdateSeq

modifyRows() → SparseArray¶

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

Return type: SparseArray

property 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.getMaxVertexTransformIndices().

Return type: int

removeBlend(n: size_t) → None¶: Removes the blend at the nth position.

property rows¶

Getter: Returns the subset of rows (vertices) in the associated GeomVertexData that this TransformBlendTable actually affects.
Setter: Specifies the subset of rows (vertices) in the associated GeomVertexData that this TransformBlendTable actually affects.

Return type: SparseArray

setBlend(n: size_t, blend: TransformBlend) → None¶: Replaces the blend at the nth position with the indicated value.

setRows(rows: SparseArray) → None¶: Specifies the subset of rows (vertices) in the associated GeomVertexData that this TransformBlendTable actually affects.

write(out: ostream, indent_level: int) → None¶