trimesh.voxel.transforms module

Classes

Transform(matrix)

Class for caching metadata associated with 4x4 transformations.

class trimesh.voxel.transforms.Transform(matrix)

Bases: object

Class for caching metadata associated with 4x4 transformations.

The transformation matrix is used to define relevant properties for the voxels, including pitch and origin.

Methods

apply_scale(scale)	Mutate the transform in-place and return self.
apply_transform(matrix)	Mutate the transform in-place and return self.
apply_translation(translation)	Mutate the transform in-place and return self.
copy()
crc()	Get the zlib.adler32 hash of the current transformation matrix.
inverse_transform_points(points)	Apply the inverse transformation to points (not in-place).
md5()	Get the MD5 hash of the current transformation matrix.
transform_points(points)	Apply the transformation to points (not in-place).

Attributes

inverse_matrix
is_identity	Flags this transformation being sufficiently close to eye(4).
matrix	Get the homogeneous transformation matrix.
pitch
scale	Get the scale factor of the current transformation.
translation	Get the translation component of the matrix
unit_volume	Volume of a transformed unit cube.

apply_scale(scale)

Mutate the transform in-place and return self.

apply_transform(matrix)

Mutate the transform in-place and return self.

apply_translation(translation)

Mutate the transform in-place and return self.

copy()

crc()

Get the zlib.adler32 hash of the current transformation matrix.

Returns

crc – Hash of transformation matrix

Return type

str

property inverse_matrix

inverse_transform_points(points)

Apply the inverse transformation to points (not in-place).

property is_identity

Flags this transformation being sufficiently close to eye(4).

property matrix

Get the homogeneous transformation matrix.

Returns

matrix – Transformation matrix

Return type

(4, 4) float

md5()

Get the MD5 hash of the current transformation matrix.

Returns

md5 – Hash of transformation matrix

Return type

str

property pitch

property scale

Get the scale factor of the current transformation.

Returns

scale – Scale factor from the matrix

Return type

(3,) float

transform_points(points)

Apply the transformation to points (not in-place).

Parameters

points ((n, 3) float) – Points in cartesian space

Returns

transformed – Points transformed by matrix

Return type

(n, 3) float

property translation

Get the translation component of the matrix

Returns

translation – Cartesian translation

Return type

(3,) float

property unit_volume

Volume of a transformed unit cube.