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

assign(copy: TransformBlendTable) → TransformBlendTable¶

Return type: TransformBlendTable

getNumBlends() → size_t¶

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

Return type: size_t

getBlend(n: size_t) → TransformBlend¶

Returns the nth blend in the table.

Return type: TransformBlend

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

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

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

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

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().

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().

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

getRows() → SparseArray¶

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

Return type: SparseArray

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

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

static getClassType() → TypeHandle¶

Return type: TypeHandle

getBlends() → list¶

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]

property modified¶

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

Return type: UpdateSeq

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

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 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