vedo/tests/common/test_core1.py

import numpy as np
from vedo import Cone, Sphere, merge, Volume, dataurl, Assembly
import vtk

print('\n\n---------------------------------')
print('vtkVersion', vtk.vtkVersion().GetVTKVersion())
print('---------------------------------')


#####################################
cone = Cone(res=48)
sphere = Sphere(res=24)

carr = cone.cell_centers().coordinates[:, 2]
parr = cone.vertices[:, 0]

cone.pointdata["parr"] = parr
cone.celldata["carr"] = carr

carr = sphere.cell_centers().coordinates[:, 2]
parr = sphere.vertices[:, 0]

sphere.pointdata["parr"] = parr
sphere.celldata["carr"] = carr

sphere.pointdata["pvectors"] = np.sin(sphere.vertices)

sphere.compute_elevation()

cone.compute_normals()
sphere.compute_normals()


###################################### test clone()
c2 = cone.clone()
print('clone()', cone.npoints, c2.npoints)
assert cone.npoints == c2.npoints
print('clone()', cone.ncells, c2.ncells)
assert cone.ncells == c2.ncells


###################################### test merge()
m = merge(sphere, cone)
print('merge()', m.npoints, cone.npoints + sphere.npoints)
assert m.npoints == cone.npoints + sphere.npoints
print('merge()', m.ncells, cone.ncells + sphere.ncells)
assert m.ncells == cone.ncells + sphere.ncells


###################################### inputdata
print('dataset', [cone.dataset], "vtk.vtkPolyData")
assert isinstance(cone.dataset, vtk.vtkPolyData)


###################################### mapper
print('mapper', [cone.mapper], "vtk.vtkPolyDataMapper")
assert isinstance(cone.mapper, vtk.vtkPolyDataMapper)


###################################### pickable
cone.pickable(False)
cone.pickable(True)
print('pickable', cone.pickable(), True)
assert cone.pickable()


###################################### pos
cone.pos(1,2,3)
print('pos', [1,2,3], cone.pos())
assert np.allclose([1,2,3], cone.pos())
cone.pos(5,6)
print('pos',[5,6,0], cone.pos())
assert np.allclose([5,6,0], cone.pos())


###################################### shift
cone.pos(5,6,7).shift(3,0,0)
print('shift',[8,6,7], cone.pos())
assert np.allclose([8,6,7], cone.pos(), atol=0.001)


###################################### x y z
cone.pos(10,11,12)
cone.x(1.1)
print('x y z',[1.1,11,12], cone.pos())
assert np.allclose([1.1,11,12], cone.pos(), atol=0.001)
cone.y(1.2)
print('x y z',[1.1,1.2,12], cone.pos())
assert np.allclose([1.1,1.2,12], cone.pos(), atol=0.001)
cone.z(1.3)
print('x y z',[1.1,1.2,1.3], cone.pos())
assert np.allclose([1.1,1.2,1.3], cone.pos(), atol=0.001)


###################################### rotate
cr = cone.pos(0,0,0).clone().rotate(90, axis=(0, 1, 0))
print('rotate', np.max(cr.vertices[:,2]) ,'<', 1.01)
assert np.max(cr.vertices[:,2]) < 1.01


###################################### orientation
cr = cone.pos(0,0,0).clone().reorient([0,0,1], (1, 1, 0))
print('orientation',np.max(cr.vertices[:,2]) ,'<', 1.01)
assert np.max(cr.vertices[:,2]) < 1.01

####################################### scale
cr.scale(5)
print('scale',np.max(cr.vertices[:,2]) ,'>', 4.98)
assert np.max(cr.vertices[:,2]) > 4.98


###################################### box
bx = cone.box()
print('box',bx.npoints, 24)
assert bx.npoints == 24
print('box',bx.clean().npoints , 8)
assert bx.clean().npoints == 8

###################################### transform
ct = cone.clone().rotate_x(10).rotate_y(10).rotate_z(10)
print('transform', [ct.transform.T], [vtk.vtkTransform])
assert isinstance(ct.transform.T, vtk.vtkTransform)

print('ntransforms',ct.transform.T.GetNumberOfConcatenatedTransforms())
assert ct.transform.T.GetNumberOfConcatenatedTransforms()


###################################### pointdata and celldata
arrnames = cone.pointdata.keys()
print('pointdata', arrnames, 'parr')
assert 'parr' in arrnames
arrnames = cone.celldata.keys()
print('celldata.keys', arrnames, 'carr')
assert 'carr' in arrnames


###################################### Get Point Data
arr = sphere.pointdata['parr']
print('pointdata',len(arr))
assert len(arr)
print('pointdata',np.max(arr) ,'>', .99)
assert np.max(arr) > .99

arr = sphere.celldata['carr']
print('celldata',[arr])
assert len(arr)
print('celldata',np.max(arr) ,'>', .99)
assert np.max(arr) > .99


######################################__add__
print('__add__', [cone+sphere])
assert isinstance(cone+sphere, Assembly)


###################################### vertices
s2 = sphere.clone()
pts = sphere.vertices
pts2 = pts + [1,2,3]
s2.vertices = pts2
pts3 = s2.vertices
print('vertices',sum(pts3-pts2))
assert np.allclose(pts2, pts3, atol=0.001)


###################################### cells
print('cells')
assert np.array(sphere.cells).shape == (2112, 3)


###################################### texture
st = sphere.clone().texture(dataurl+'textures/wood2.jpg')
print('texture test')
assert isinstance(st.actor.GetTexture(), vtk.vtkTexture)


###################################### delete_cells_by_point_index
sd = sphere.clone().delete_cells_by_point_index(range(100))
print('delete_cells_by_point_index',sd.npoints , sphere.npoints)
assert sd.npoints == sphere.npoints
print('delete_cells_by_point_index',sd.ncells ,'<', sphere.ncells)
assert sd.ncells < sphere.ncells


###################################### reverse
# this fails on some archs (see issue #185)
# lets comment it out temporarily
# sr = sphere.clone().reverse().cut_with_plane()
# print('DISABLED: reverse test', sr.npoints, 576)
# rev = vtk.vtkReverseSense()
# rev.SetInputData(sr.polydata())
# rev.Update()
# print('DISABLED: reverse vtk nr.pts, nr.cells')
# print(rev.GetOutput().GetNumberOfPoints(),sr.polydata().GetNumberOfPoints(),
#       rev.GetOutput().GetNumberOfCells(), sr.polydata().GetNumberOfCells())
# assert sr.npoints == 576


###################################### quantize
sq = sphere.clone().quantize(0.1)
print('quantize',sq.npoints , 834)
assert sq.npoints == 834


###################################### bounds
ss = sphere.clone().scale([1,2,3])
print('bounds',ss.xbounds())
assert np.allclose(ss.xbounds(), [-1,1], atol=0.01)
print('bounds',ss.ybounds())
assert np.allclose(ss.ybounds(), [-2,2], atol=0.01)
print('bounds',ss.zbounds())
assert np.allclose(ss.zbounds(), [-3,3], atol=0.01)


###################################### average_size
print('average_size', Sphere().scale(10).pos(1,3,7).average_size())
assert 9.9 < Sphere().scale(10).pos(1,3,7).average_size() < 10.1

print('diagonal_size',sphere.diagonal_size())
assert 3.3 < sphere.diagonal_size() < 3.5

print('center_of_mass',sphere.center_of_mass())
assert np.allclose(sphere.center_of_mass(), [0,0,0], atol=0.001)

print('volume',sphere.volume())
assert 4.1 < sphere.volume() < 4.2

print('area',sphere.area())
assert 12.5 < sphere.area() < 12.6


###################################### closest_point
pt = [12,34,52]
print('closest_point',sphere.closest_point(pt), [0.19883616, 0.48003298, 0.85441941])
assert np.allclose(sphere.closest_point(pt),
                   [0.19883616, 0.48003298, 0.85441941], atol=0.001)


###################################### find_cells_in_bounds
ics = sphere.find_cells_in_bounds(xbounds=(-0.5, 0.5))
print('find_cells_in',len(ics) , 1404)
assert len(ics) == 1576


######################################transformMesh
T = cone.clone().pos(35,67,87).transform
s3 = Sphere().apply_transform(T)
print('transformMesh',s3.center_of_mass(), (35,67,87))
assert np.allclose(s3.center_of_mass(), (35,67,87), atol=0.001)


######################################normalize
s3 = sphere.clone().pos(10,20,30).scale([7,8,9]).normalize()
print('normalize',s3.center_of_mass(), (10,20,30))
assert np.allclose(s3.center_of_mass(), (10,20,30), atol=0.001)
print('normalize',s3.average_size())
assert 0.9 < s3.average_size() < 1.1


###################################### crop
c2 = cone.clone().crop(left=0.5)
print('crop',np.min(c2.vertices[:,0]), '>', -0.001)
assert np.min(c2.vertices[:,0]) > -0.001


###################################### subdivide
s2 = sphere.clone().subdivide(4)
print('subdivide',s2.npoints , 270338)
assert s2.npoints == 270338


###################################### decimate
s2 = sphere.clone().decimate(0.2)
print('decimate',s2.npoints , 213)
assert s2.npoints == 213

###################################### vertex_normals
print('vertex_normals',sphere.vertex_normals[12], [9.97668684e-01, 1.01513637e-04, 6.82437494e-02])
assert np.allclose(sphere.vertex_normals[12], [9.97668684e-01, 1.01513637e-04, 6.82437494e-02], atol=0.001)


###################################### contains
print('is_inside',sphere.contains([0.1,0.2,0.3]))
assert Sphere().contains([0.1,0.2,0.3])

###################################### intersectWithLine (fails vtk7..)
# pts = sphere.intersectWithLine([-2,-2,-2], [2,3,4])
# print('intersectWithLine',pts[0])
# assert np.allclose(pts[0], [-0.8179885149002075, -0.522485613822937, -0.2269827425479889], atol=0.001)
# print('intersectWithLine',pts[1])
# assert np.allclose(pts[1], [-0.06572723388671875, 0.41784095764160156, 0.9014091491699219], atol=0.001)


############################################################################
############################################################################ Assembly
asse = cone+sphere

######################################
print('unpack',len(asse.unpack()) , 2)
assert len(asse.unpack()) ==2
print('unpack', asse.unpack(0).name)
assert asse.unpack(0) == cone
print('unpack',asse.unpack(1).name)
assert asse.unpack(1) == sphere
print('unpack',asse.diagonal_size(), 4.15)
assert 4.1 < asse.diagonal_size() < 4.2


############################################################################ Volume
X, Y, Z = np.mgrid[:30, :30, :30]
scalar_field = ((X-15)**2 + (Y-15)**2 + (Z-15)**2)/225
print('Test Volume, scalar min, max =', np.min(scalar_field), np.max(scalar_field))

vol = Volume(scalar_field)
volarr = vol.pointdata[0]

print('Volume',volarr.shape[0] , 27000)
assert volarr.shape[0] == 27000
print('Volume',np.max(volarr) , 3)
assert np.max(volarr) == 3
print('Volume',np.min(volarr) , 0)
assert np.min(volarr) == 0

###################################### isosurface
iso = vol.isosurface(1.0)
print('isosurface', iso.area())
assert 2540 < iso.area() <  3000


###################################### utils change of coords
from vedo import transformations
q = [5,2,3]
q = transformations.cart2spher(*q)
q = transformations.spher2cart(*q)
print("cart2spher spher2cart", q)
assert np.allclose(q, [5,2,3], atol=0.001)
q = transformations.cart2cyl(*q)
q = transformations.cyl2cart(*q)
print("cart2cyl cyl2cart", q)
assert np.allclose(q, [5,2,3], atol=0.001)
q = transformations.cart2cyl(*q)
q = transformations.cyl2spher(*q)
q = transformations.spher2cart(*q)
print("cart2cyl cyl2spher spher2cart", q)
assert np.allclose(q, [5,2,3], atol=0.001)
q = transformations.cart2spher(*q)
q = transformations.spher2cyl(*q)
q = transformations.cyl2cart(*q)
print("cart2spher spher2cyl cyl2cart", q)
assert np.allclose(q, [5,2,3], atol=0.001)

######################################
print("OK with test_actors")