def test_doc_035(self):
import numpy as np
# Define the 2 independent variables
phi, theta = np.meshgrid(np.linspace(0, 2 * np.pi, 1024),
np.linspace(0, np.pi, 1024))
# Calculate the x, y, z values to form a sphere
x = np.cos(phi) * np.sin(theta)
y = np.sin(phi) * np.sin(theta)
z = np.cos(theta)
# You can play around with this. The coordinates must be zipped
# together into one array with ``shape[-1] == 2``, hence the
# ``vpl.zip_axes``. And must be between 0 and 1, hence the ``% 1.0``.
texture_coords = (vpl.zip_axes(phi * 3, theta * 5) / np.pi) % 1.0
# Pick an image to use. There is a picture of a shark here if you
# don't have one available.
path = vpl.data.ICONS["Right"]
texture_map = vpl.TextureMap(path, interpolate=True)
# You could convert ``texture_coords`` to ``colors`` now using.
# colors = texture_map(texture_coords)
# then pass ``colors`` as the `scalars` argument instead.
vpl.surface(x, y, z, scalars=texture_coords, texture_map=texture_map)
def test_surface():
thi, theta = np.meshgrid(np.linspace(0, 2 * np.pi, 100),
np.linspace(0, np.pi, 50))
x = np.cos(thi) * np.sin(theta)
y = np.sin(thi) * np.sin(theta)
z = np.cos(theta)
vpl.surface(x, y, z, scalars=x.ravel())
def test_doc_09(self):
import vtkplotlib as vpl
import numpy as np
phi, theta = np.meshgrid(np.linspace(0, 2 * np.pi, 1024),
np.linspace(0, np.pi, 1024))
x = np.cos(phi) * np.sin(theta)
y = np.sin(phi) * np.sin(theta)
z = np.cos(theta)
vpl.surface(x, y, z)
def test_texture():
phi, theta = np.meshgrid(np.linspace(0, 2 * np.pi, 1024),
np.linspace(0, np.pi, 1024))
x = np.cos(phi) * np.sin(theta)
y = np.sin(phi) * np.sin(theta)
z = np.cos(theta)
self = vpl.surface(x, y, z, fig=None)
path = vpl.data.ICONS["Right"]
self.polydata.texture_map = vpl.TextureMap(path, interpolate=True)
self.colors = (vpl.zip_axes(phi * 3, theta * 5) / np.pi) % 1.
self.connect()
vpl.gcf().add_plot(self)