Is it possible to directly apply an affine transformation matrix to a Mayavi ImageActor object?
ImageActor, which ultimately is a wrapper for tvtk.ImageActor, has a user_matrix property, which lets you assign a 4D transformation matrix.
Starting with a random image,
import numpy as np from mayavi.mlab import imshow s = np.random.random((10, 10)) image = imshow(s, colormap='gist_earth', interpolate=False)gives us the following ...
Creating a transformation matrix and setting a term to give it some shear ...
from tvtk.api import tvtk transform_matrix = tvtk.Matrix4x4() transform_matrix.set_element(0, 1, 2.5) image.actor.user_matrix = transform_matrixgives us ...
set_element has the signature (row, col, value), so you should be able to set elements on that matrix as needed.