from panda3d.egg import EggXfmSAnim
This corresponds to an <Xfm$Anim_S$> entry, which is a collection of up to nine <S$Anim> entries that specify the nine components of a transformation. It’s implemented as a group that can contain any number of
Converts the older-style XfmAnim table to the newer-style XfmSAnim table.
__init__(name: str, cs: panda3d.core.CoordinateSystem)
addComponentData(component: int, value: float) → None¶
Adds a new row to the indicated component (0-12) of the table.
addComponentData(component_name: str, value: float) → None
Adds a new row to the named component (one of matrix_component_letters) of the table.
addData(mat: panda3d.core.LMatrix4d) → bool¶
Adds a new matrix to the table, by adding a new row to each of the subtables.
This is a convenience function that treats the table of tables as if it were a single table of matrices. It is an error to call this if any SAnimData children of this node have an improper name (e.g. not a single letter, or not one of “ijkabchprxyz”).
This function has the further requirement that all nine of the subtables must exist and be of the same length. Furthermore, the order string must be the standard order string, which matches the system
Thus, you probably cannot take an existing
EggXfmSAnimobject and start adding matrices to the end; you must clear out the original data first. (As a special exception, if no tables exist, they will be created.) The method
normalize()will do this for you on an existing
This function may fail silently if the matrix cannot be decomposed into scale, shear, rotate, and translate. In this case, the closest approximation is added to the table, and false is returned.
composeWithOrder(mat: panda3d.core.LMatrix4d, scale: panda3d.core.LVecBase3d, shear: panda3d.core.LVecBase3d, hpr: panda3d.core.LVecBase3d, trans: panda3d.core.LVecBase3d, order: str, cs: panda3d.core.CoordinateSystem) → None¶
Composes a matrix out of the nine individual components, respecting the order string. The components will be applied in the order indicated by the string.
getCoordinateSystem() → panda3d.core.CoordinateSystem¶
Returns the coordinate system this table believes it is defined within. This should always match the coordinate system of the
EggDatastructure that owns it. It is necessary to store it here because the meaning of the h, p, and r columns depends on the coordinate system.
getNumRows() → int¶
Returns the effective number of rows in the table. This is actually the number of rows of the smallest subtable larger than one row. This is a convenience function that treats the table of tables as if it were a single table of matrices.
getStandardOrder() → str¶
getValue(row: int, mat: panda3d.core.LMatrix4d) → None¶
Returns the value of the aggregate row of the table as a matrix. This is a convenience function that treats the table of tables as if it were a single table of matrices. It is an error to call this if any SAnimData children of this node have an improper name (e.g. not a single letter, or not one of “ijkabchprxyz”).
normalize() → None¶
The inverse operation of
optimize(), this ensures that all the sub-tables have the same length by duplicating rows as necessary. This is needed before doing operations like
setValue()on an existing table.
optimizeToStandardOrder() → None¶
Optimizes the table by collapsing redundant sub-tables, and simultaneously ensures that the order string is the standard order (which is the same as that supported by
setValue(row: int, mat: panda3d.core.LMatrix4d) → bool¶
Replaces the indicated row of the table with the given matrix.
The return value is true if the matrix can be decomposed and stored as scale, shear, rotate, and translate, or false otherwise. The data is set in either case.