vedo/tests/snippets/test_docs_sniplets.py

## This contains the script snippets that come with the documetation for testing
import numpy as np
from vedo import *
from vedo.pyplot import plot
import vedo

doshow = 1

##################################################################### addons.py
box = Box(pos=(1,2,3), length=8, width=9, height=7).alpha(0.1)
axs = Axes(box, c='k')  # returns Assembly object
for a in axs.unpack():
    print(a.name)
if doshow:
    show(box, axs).close()

######################################################
print("Test 1")
b = Box(pos=(0, 0, 0), length=80, width=90, height=70).alpha(0.1)
if doshow:
    show(
        b,
        axes={
            "xtitle": "Some long variable [a.u.]",
            "number_of_divisions": 4,
            # ...
        },
    ).close()

##################################################################### base.py
print("Test 2")
c1 = Cube()
c2 = c1.clone().c('violet').alpha(0.5) # copy of c1
v = vector(0.2,1,0)
p = vector(1,0,0)  # axis passes through this point
c2.rotate(90, axis=v, point=p)
l = Line(-v+p, v+p).lw(3).c('red')
if doshow:
    show(c1, l, c2, axes=1).close()


######################################################
print("Test 3")
objs = []
for i in range(-5, 5):
    p = [i/3, i/2, i]
    v = vector(i/10, i/20, 1)
    c = Circle(r=i/5+1.2).pos(p).lw(3)
    objs += [c, Arrow(p,p+v)]
if doshow:
    show(objs, axes=1).close()


######################################################
print("Test 4")
c1 = Cube()
c2 = c1.clone().c('violet').alpha(0.5) # copy of c1
v = vector(0.2,1,0)
p = vector(1,0,0)  # axis passes through this point
c2.rotate(90, axis=v, point=p)
# get the inverse of the current transformation
T = c2.transform.compute_inverse()
c2.apply_transform(T)  # put back c2 in place
l = Line(p-v, p+v).lw(3).c('red')
if doshow:
    show(c1.wireframe().lw(3), l, c2, axes=1).close()



######################################################
print("Test 5")
tetmesh = TetMesh(dataurl+'limb_ugrid.vtk')
tetmesh.color('rainbow')
cu = Cube(side=500).x(500) # any Mesh works
tetmesh.cut_with_box(cu)
if doshow:
    show(axes=1).close()

##################################################################### mesh.py
print("Test 6")
s = Sphere().crop(right=0.3, left=0.1)
if doshow:
    show(s).close()

######################################################
print("Test 7")
c1 = Cylinder(pos=(0,0,0), r=2, height=3, axis=(1,.0,0), alpha=.1).triangulate()
c2 = Cylinder(pos=(0,0,2), r=1, height=2, axis=(0,.3,1), alpha=.1).triangulate()
intersect = c1.intersect_with(c2).join(reset=True)
spline = Spline(intersect).c('blue').lw(5)
if doshow:
    show(c1, c2, spline, intersect.labels('id'), axes=1).close()


######################################################
print("Test 8")
grid = Grid()#.triangulate()
circle = Circle(r=0.3, res=24).pos(0.11,0.12)
line = Line(circle, closed=True, lw=4, c='r4')
# grid.imprint(line)
if doshow:
    show(grid, line, axes=1).close()


##################################################################### Image.py
print("Test 9")
if doshow:
    pic = Image(dataurl+'dog.jpg').pad()
    pic.append([pic,pic,pic], axis='y')
    pic.append([pic,pic,pic,pic], axis='x')
    pic.show(axes=1).close()


######################################################
print("Test 10")
if doshow:
    p = vedo.Image(vedo.dataurl+'images/dog.jpg').bw()
    pe = p.clone().enhance()
    show(p, pe, N=2, mode='image', zoom='tight').close()



######################################################
print("Test 11")
if doshow:
    pic1 = Image("https://aws.glamour.es/prod/designs/v1/assets/620x459/547577.jpg")
    pic2 = pic1.clone().invert()
    pic3 = pic1.clone().binarize()
    show(pic1, pic2, pic3, N=3, bg="blue9").close()



######################################################
print("Test 12")
if doshow:
    pic = vedo.Image(vedo.dataurl+"images/dog.jpg")
    pic.add_rectangle([100,300], [100,200], c='green4', alpha=0.7)
    pic.add_line([100,100],[400,500], lw=2, alpha=1)
    pic.add_triangle([250,300], [100,300], [200,400])
    show(pic, axes=1).close()


##################################################################### plotter.py
print("Test 13")
cone = Cone()
if doshow:
    cone.show(axes=1).fly_to([1,0,0])
    cone.show().close()

######################################################
print("Test 14")
settings.use_parallel_projection = True # or else it doesnt make sense!
cube = Cube().alpha(0.2)
plt = Plotter(size=(900,600), axes=dict(xtitle='x (um)'))
if doshow:
    plt.add_scale_indicator(units='um', c='blue4')
    plt.show(cube, "Scale indicator with units").close()
settings.use_parallel_projection = False

######################################################
print("Test 15")
def func(evt): # called every time the mouse moves
    # evt is a dotted dictionary
    if not evt.actor:
        return  # no hit, return
    print("point coords =", evt.picked3d)

elli = Ellipsoid()
plt = Plotter(axes=1)
plt.add_callback('mouse hovering', func)
if doshow:
    plt.show(elli).close()


##################################################################### pointcloud.py
# print("Test 16")
# s = Ellipsoid().rotate_y(30)
# #Camera options: pos, focal_point, viewup, distance,
# # clippingRange, parallelScale, thickness, viewAngle
# camopts = dict(pos=(0,0,25), focal_point=(0,0,0))
# if doshow:
#     show(s, camera=camopts, offscreen=True).close()
#     m = s.visible_points()
#     #print('visible pts:', m.points()) # numpy array
#     show(m, new=True, axes=1).close() # optionally draw result on a new window


######################################################
print("Test 17")
def fibonacci_sphere(n):
    s = np.linspace(0, n, num=n, endpoint=False)
    theta = s * 2.399963229728653
    y = 1 - s * (2/(n-1))
    r = np.sqrt(1 - y * y)
    x = np.cos(theta) * r
    z = np.sin(theta) * r
    return [x,y,z]
# print(np.c_[fibonacci_sphere(10)].T)
fpoints = Points(np.c_[fibonacci_sphere(1000)].T)
if doshow:
    fpoints.show(axes=1).close()


######################################################
print("Test 18")
s = Sphere(res=10).linewidth(1).c("orange").compute_normals()
point_ids = s.labels('id', on="points").c('green')
cell_ids  = s.labels('id', on="cells").c('black')
if doshow:
    show(s, point_ids, cell_ids).close()



######################################################
print("Test 19")
sph = Sphere(quads=True, res=4).compute_normals().wireframe()
sph.celldata["zvals"] = sph.cell_centers().coordinates[:,2]
l2d = sph.labels("zvals", on="cells", precision=2).backcolor('orange9')
if doshow:
    show(sph, l2d, axes=1).close()



######################################################
print("Test 20")
c1 = Cube().rotate_z(5).x(2).y(1)
print("cube1 position", c1.pos())
T = c1.transform  # rotate by 5 degrees, sum 2 to x and 1 to y
c2 = Cube().c('r4')
c2.apply_transform(T)
c2.apply_transform(T)
c2.apply_transform(T)
print("cube2 position", c2.pos())
if doshow:
    show(c1, c2, axes=1).close()



######################################################
print("Test 21")
disc = Disc(r1=1, r2=1.2)
mesh = disc.extrude(3, res=50).linewidth(1)
mesh.cut_with_cylinder([0,0,2], r=0.4, axis='y', invert=True)
if doshow:
    show(mesh, axes=1)


######################################################
print("Test 22")
disc = Disc(r1=1, r2=1.2)
mesh = disc.extrude(3, res=50).linewidth(1)
mesh.cut_with_sphere([1,-0.7,2], r=1.5, invert=True)
if doshow:
    show(mesh, axes=1).close()


######################################################
print("Test 23")
arr = np.random.randn(100000, 3)/2
pts = Points(arr).c('red3').pos(5,0,0)
cube = Cube().pos(4,0.5,0)
assem = pts.cut_with_mesh(cube, keep=True)
if doshow:
    show(assem.unpack(), axes=1).close()


##################################################################### shapes.py
print("Test 24")
pts = [[1, 0, 0], [5, 2, 0], [3, 3, 1]]
ln = Line(pts, c='r', lw=5).pattern('- -', repeats=10)
if doshow:
    ln.show(axes=1).close()



######################################################
print("Test 25")
if doshow:
    shape = Assembly(dataurl+"timecourse1d.npy")[58]
    pts = shape.rotate_x(30).coordinates
    tangents = Line(pts).tangents()
    arrs = Arrows(pts, pts+tangents, c='blue9')
    show(shape.c('red5').lw(5), arrs, bg='bb', axes=1).close()


######################################################
print("Test 26")
if doshow:
    shape = Assembly(dataurl+"timecourse1d.npy")[55]
    curvs = Line(shape.coordinates).curvature()
    shape.cmap('coolwarm', curvs, vmin=-2,vmax=2).add_scalarbar3d(c='w')
    shape.render_lines_as_tubes().lw(12)
    pp = plot(curvs, ac='white', lc='yellow5')
    show(shape, pp, N=2, bg='bb', sharecam=False).close()



######################################################
print("Test 27")
aline = Line([(0,0,0),(1,3,0),(2,4,0)])
surf1 = aline.sweep((1,0.2,0), res=3)
surf2 = aline.sweep((0.2,0,1))
aline.color('r').linewidth(4)
if doshow:
    show(surf1, surf2, aline, axes=1).close()


######################################################
print("Test 28")
pts = [(-4,-3),(1,1),(2,4),(4,1),(3,-1),(2,-5),(9,-3)]
ln = Line(pts, c='r', lw=2).z(0.01)
rl = RoundedLine(pts, 0.6)
if doshow:
    show(Points(pts), ln, rl, axes=1).close()


######################################################
print("Test 29")
pts = np.random.randn(25,3)
for i,p in enumerate(pts):
    p += [5*i, 15*sin(i/2), i*i*i/200]
if doshow:
    show(Points(pts), Bezier(pts), axes=1).close()


######################################################
print("Test 30")
xcoords = np.arange(0, 2, 0.2)
ycoords = np.arange(0, 1, 0.2)
sqrtx = sqrt(xcoords)
grid = Grid(s=(sqrtx, ycoords))
if doshow:
    grid.show(axes=8)

# can also create a grid from np.mgrid:
X, Y = np.mgrid[-12:12:1000*1j, 0:15:1000*1j]
vgrid = Grid(s=(X[:,0], Y[0]))
if doshow:
    vgrid.show(axes=8).close()


######################################################
print("Test 31")
settings.immediate_rendering = False
plt = Plotter(N=18)
for i in range(18):
    ps = ParametricShape(i).color(i)
    if doshow:
        plt.at(i).show(ps, ps.name)
if doshow:
    plt.interactive()