vispy.util.transforms module¶

Very simple transformation library that is needed for some examples.

vispy.util.transforms.affine_map(points1, points2)[source]¶

Find a 3D transformation matrix that maps points1 onto points2.

Arguments are specified as arrays of four 3D coordinates, shape (4, 3).

vispy.util.transforms.frustum(left, right, bottom, top, znear, zfar)[source]¶

Create view frustum

Parameters

leftfloat: Left coordinate of the field of view.
rightfloat: Right coordinate of the field of view.
bottomfloat: Bottom coordinate of the field of view.
topfloat: Top coordinate of the field of view.
znearfloat: Near coordinate of the field of view.
zfarfloat: Far coordinate of the field of view.

Returns

Mndarray: View frustum matrix (4x4).

vispy.util.transforms.ortho(left, right, bottom, top, znear, zfar)[source]¶

Create orthographic projection matrix

Parameters

leftfloat: Left coordinate of the field of view.
rightfloat: Right coordinate of the field of view.
bottomfloat: Bottom coordinate of the field of view.
topfloat: Top coordinate of the field of view.
znearfloat: Near coordinate of the field of view.
zfarfloat: Far coordinate of the field of view.

Returns

Mndarray: Orthographic projection matrix (4x4).

vispy.util.transforms.perspective(fovy, aspect, znear, zfar)[source]¶

Create perspective projection matrix

Parameters

fovyfloat: The field of view along the y axis.
aspectfloat: Aspect ratio of the view.
znearfloat: Near coordinate of the field of view.
zfarfloat: Far coordinate of the field of view.

Returns

Mndarray: Perspective projection matrix (4x4).

vispy.util.transforms.rotate(angle, axis, dtype=None)[source]¶

The 3x3 rotation matrix for rotation about a vector.

Parameters

anglefloat: The angle of rotation, in degrees.
axisndarray: The x, y, z coordinates of the axis direction vector.

Returns

Mndarray: Transformation matrix describing the rotation.

vispy.util.transforms.scale(s, dtype=None)[source]¶

Non-uniform scaling along the x, y, and z axes

Parameters

sarray-like, shape (3,): Scaling in x, y, z.
dtypedtype | None: Output type (if None, don’t cast).

Returns

Mndarray: Transformation matrix describing the scaling.

vispy.util.transforms.translate(offset, dtype=None)[source]¶

Translate by an offset (x, y, z) .

Parameters

offsetarray-like, shape (3,): Translation in x, y, z.
dtypedtype | None: Output type (if None, don’t cast).

Returns

Mndarray: Transformation matrix describing the translation.

vispy.util.quaternion module vispy.util.wrappers module