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test_visual_mesh.py
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test_visual_mesh.py
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import k3d
import numpy as np
import pytest
from .plot_compare import *
from k3d.helpers import download
import vtk
from vtk.util import numpy_support
vertices = [
-10, 0, -1,
10, 0, -1,
10, 0, 1,
-10, 0, 1,
]
indices = [
0, 1, 3,
1, 2, 3
]
def test_mesh():
global vertices, indices
prepare()
mesh = k3d.mesh(vertices, indices)
pytest.plot += mesh
compare('mesh')
def test_mesh_attribute():
global vertices, indices
prepare()
vertex_attribute = [0, 1, 1, 0]
mesh = k3d.mesh(vertices, indices, attribute=vertex_attribute,
color_map=k3d.basic_color_maps.CoolWarm, color_range=[0.0, 1.0])
pytest.plot += mesh
compare('mesh_attribute')
def test_mesh_advanced():
prepare()
filename = download(
'https://github.com/To-Fujita/Babylon.js_3D_Graphics/raw/master/scenes/stl/Cute%20Darth%20Vader.stl')
reader = vtk.vtkSTLReader()
reader.SetFileName(filename)
reader.Update()
mesh = k3d.vtk_poly_data(reader.GetOutput(), color=0x222222, flat_shading=True,
transform=k3d.transform(rotation=[np.pi / 2, 1, 0, 0]))
pytest.plot += mesh
compare('mesh_advanced')
def test_mesh_advanced_smoothed():
prepare()
filename = download(
'https://github.com/To-Fujita/Babylon.js_3D_Graphics/raw/master/scenes/stl/Cute%20Darth%20Vader.stl')
reader = vtk.vtkSTLReader()
reader.SetFileName(filename)
reader.Update()
mesh = k3d.vtk_poly_data(reader.GetOutput(), color=0x222222, flat_shading=False,
transform=k3d.transform(rotation=[np.pi / 2, 1, 0, 0]))
pytest.plot += mesh
compare('mesh_advanced_smoothed')
def test_mesh_advanced_opacity():
prepare()
filename = download(
'https://github.com/To-Fujita/Babylon.js_3D_Graphics/raw/master/scenes/stl/Cute%20Darth%20Vader.stl')
reader = vtk.vtkSTLReader()
reader.SetFileName(filename)
reader.Update()
mesh = k3d.vtk_poly_data(reader.GetOutput(), color=0x222222, flat_shading=False, opacity=0.5,
transform=k3d.transform(rotation=[np.pi / 2, 1, 0, 0]))
pytest.plot += mesh
compare('mesh_advanced_opacity')
def test_mesh_advanced_wireframe():
prepare()
filename = download(
'https://github.com/To-Fujita/Babylon.js_3D_Graphics/raw/master/scenes/stl/Cute%20Darth%20Vader.stl')
reader = vtk.vtkSTLReader()
reader.SetFileName(filename)
reader.Update()
mesh = k3d.vtk_poly_data(reader.GetOutput(), color=0x222222, opacity=0.2, wireframe=True,
transform=k3d.transform(rotation=[np.pi / 2, 1, 0, 0]))
pytest.plot += mesh
compare('mesh_advanced_wireframe')
def test_mesh_attribute_advanced():
prepare()
N = 100
theta = np.linspace(0, 2.0 * np.pi, N)
phi = np.linspace(0, 2.0 * np.pi, N)
theta, phi = np.meshgrid(theta, phi)
c, a = 2, 1
x = (c + a * np.cos(theta)) * np.cos(phi)
y = (c + a * np.cos(theta)) * np.sin(phi)
z = a * np.sin(theta)
vertices = np.dstack([x, y, z]).astype(np.float32)
indices = (np.stack([
np.arange(N * N) + 0, np.arange(N * N) + N, np.arange(N * N) + N + 1,
np.arange(N * N) + 0, np.arange(N * N) + N + 1, np.arange(N * N) + 1
]).T % (N * N)).astype(np.uint32)
mesh = k3d.mesh(vertices, indices, flat_shading=False,
attribute=phi,
transform=k3d.transform(rotation=[np.pi / 2, 1, 0, 0]),
color_map=k3d.matplotlib_color_maps.twilight)
pytest.plot += mesh
compare('mesh_attribute_advanced')
pytest.plot.clipping_planes = [
[1, 1, 0, 0]
]
compare('mesh_attribute_advanced_clipping_planes')
def test_mesh_triangle_attribute():
prepare()
filename = download(
'https://github.com/To-Fujita/Babylon.js_3D_Graphics/raw/master/scenes/stl/Cute%20Darth%20Vader.stl')
reader = vtk.vtkSTLReader()
reader.SetFileName(filename)
reader.Update()
qualityFilter = vtk.vtkMeshQuality()
qualityFilter.SetInputData(reader.GetOutput())
qualityFilter.SetTriangleQualityMeasureToArea()
qualityFilter.SetQuadQualityMeasureToArea()
qualityFilter.Update()
mesh = k3d.vtk_poly_data(qualityFilter.GetOutput(), cell_color_attribute=('Quality', 0.0, 0.83),
transform=k3d.transform(rotation=[np.pi / 2, 1, 0, 0]))
pytest.plot += mesh
compare('mesh_triangle_attribute')
def test_mesh_volume_data():
prepare()
filename = download(
'https://github.com/To-Fujita/Babylon.js_3D_Graphics/raw/master/scenes/stl/Cute%20Darth%20Vader.stl')
reader = vtk.vtkSTLReader()
reader.SetFileName(filename)
reader.Update()
poly = reader.GetOutput()
reader = vtk.vtkXMLImageDataReader()
reader.SetFileName('./test/assets/volume.vti')
reader.Update()
vti = reader.GetOutput()
x, y, z = vti.GetDimensions()
volume_data = numpy_support.vtk_to_numpy(
vti.GetPointData().GetArray(0)
).reshape(-1, y, x).astype(np.float32)
mesh = k3d.vtk_poly_data(poly, color=0xffffff, volume=volume_data,
transform=k3d.transform(rotation=[np.pi / 2, 1, 0, 0]),
volume_bounds=[-50, 150, -200, 100, -50, 250])
pytest.plot += mesh
compare('mesh_volume_data')