def show_vedo_mesh(self):
start = time.time()
# retrieve them as numpy arrays
# printc('points():\n', mesh.points(), c=3)
# printc('faces(): \n', mesh.faces(), c=3)
# show(mesh, labs, __doc__, viewup='z', axes=1)
with Pool(processes=8) as pool:
colors = pool.map(self.calc_color, range(self.n_cells))
mesh = Mesh([self.verts, self.faces])
mesh.backColor('blue').lineColor('white').lineWidth(0)
mesh.cellIndividualColors(colors)
show(mesh,
__doc__,
viewup='z',
interactive=False,
camera={'pos': (-1, -1, 2)}) # isometric: 2 2 2
screenshot()
end = time.time()
print(f"Calculation took {end - start} seconds.")
def plot(*inputobj, **options):
"""
Plot the object(s) provided.
Input can be any combination of: ``Mesh``, ``Volume``, ``dolfin.Mesh``,
``dolfin.MeshFunction``, ``dolfin.Expression`` or ``dolfin.Function``.
:return: the current ``Plotter`` class instance.
:param str mode: one or more of the following can be combined in any order
- `mesh`/`color`, will plot the mesh, by default colored with a scalar if available
- `displacement` show displaced mesh by solution
- `arrows`, mesh displacements are plotted as scaled arrows.
- `lines`, mesh displacements are plotted as scaled lines.
- `tensors`, to be implemented
:param bool add: add the input objects without clearing the already plotted ones
:param float density: show only a subset of lines or arrows [0-1]
:param bool wire[frame]: visualize mesh as wireframe [False]
:param c[olor]: set mesh color [None]
:param bool exterior: only show the outer surface of the mesh [False]
:param float alpha: set object's transparency [1]
:param float lw: line width of the mesh (set to zero to hide mesh) [0.5]
:param float ps: set point size of mesh vertices [None]
:param float z: add a constant to z-coordinate (useful to show 2D slices as function of time)
:param str legend: add a legend to the top-right of window [None]
:param bool scalarbar: add a scalarbar to the window ['vertical']
:param float vmin: set the minimum for the range of the scalar [None]
:param float vmax: set the maximum for the range of the scalar [None]
:param float scale: add a scaling factor to arrows and lines sizes [1]
:param str cmap: choose a color map for scalars
:param str shading: mesh shading ['flat', 'phong', 'gouraud']
:param str text: add a gray text comment to the top-left of the window [None]
:param dict isolines: dictionary of isolines properties
- n, (int) - add this number of isolines to the mesh
- c, - isoline color
- lw, (float) - isoline width
- z, (float) - add to the isoline z coordinate to make them more visible
:param dict streamlines: dictionary of streamlines properties
- probes, (list, None) - custom list of points to use as seeds
- tol, (float) - tolerance to reduce the number of seed points used in mesh
- lw, (float) - line width of the streamline
- direction, (str) - direction of integration ('forward', 'backward' or 'both')
- maxPropagation, (float) - max propagation of the streamline
- scalarRange, (list) - scalar range of coloring
:param float warpZfactor: elevate z-axis by scalar value (useful for 2D geometries)
:param float warpYfactor: elevate z-axis by scalar value (useful for 1D geometries)
:param list scaleMeshFactors: rescale mesh by these factors [1,1,1]
:param bool newPlotter: spawn a new instance of Plotter class, pops up a new window
:param int at: renderer number to plot to
:param list shape: subdvide window in (n,m) rows and columns
:param int N: automatically subdvide window in N renderers
:param list pos: (x,y) coordinates of the window position on screen
:param size: window size (x,y)
:param str title: window title
:param bg: background color name of window
:param bg2: second background color name to create a color gradient
:param int style: choose a predefined style [0-4]
- 0, `vedo`, style (blackboard background, rainbow color map)
- 1, `matplotlib`, style (white background, viridis color map)
- 2, `paraview`, style
- 3, `meshlab`, style
- 4, `bw`, black and white style.
:param int axes: axes type number
- 0, no axes,
- 1, draw customizable grid axes (see below).
- 2, show cartesian axes from (0,0,0)
- 3, show positive range of cartesian axes from (0,0,0)
- 4, show a triad at bottom left
- 5, show a cube at bottom left
- 6, mark the corners of the bounding box
- 7, draw a simple ruler at the bottom of the window
- 8, show the `vtkCubeAxesActor` object,
- 9, show the bounding box outLine,
- 10, show three circles representing the maximum bounding box,
- 11, show a large grid on the x-y plane (use with zoom=8)
- 12, show polar axes.
Axes type-1 can be fully customized by passing a dictionary ``axes=dict()`` where:
- `xtitle`, ['x'], x-axis title text
- `xrange`, [None], x-axis range in format (xmin, ymin), default is automatic.
- `numberOfDivisions`, [None], approximate number of divisions on the longest axis
- `axesLineWidth`, [1], width of the axes lines
- `gridLineWidth`, [1], width of the grid lines
- `reorientShortTitle`, [True], titles shorter than 2 letter are placed horizontally
- `originMarkerSize`, [0.01], draw a small cube on the axis where the origin is
- `titleDepth`, [0], extrusion fractional depth of title text
- `xyGrid`, [True], show a gridded wall on plane xy
- `yzGrid`, [True], show a gridded wall on plane yz
- `zxGrid`, [True], show a gridded wall on plane zx
- `zxGrid2`, [False], show zx plane on opposite side of the bounding box
- `xyGridTransparent` [False], make grid plane completely transparent
- `xyGrid2Transparent` [False], make grid plane completely transparent on opposite side box
- `xyPlaneColor`, ['gray'], color of the plane
- `xyGridColor`, ['gray'], grid line color
- `xyAlpha`, [0.15], grid plane opacity
- `xyFrameLine`, [None], add a frame for the plane
- `showTicks`, [True], show major ticks
- `xTitlePosition`, [0.32], title fractional positions along axis
- `xTitleOffset`, [0.05], title fractional offset distance from axis line
- `xTitleJustify`, ["top-right"], title justification
- `xTitleRotation`, [0], add a rotation of the axis title
- `xLineColor`, [automatic], color of the x-axis
- `xTitleColor`, [automatic], color of the axis title
- `xTitleBackfaceColor`, [None], color of axis title on its backface
- `xTitleSize`, [0.025], size of the axis title
- 'xTitleItalic', [0], a bool or float to make the font italic
- `xHighlightZero`, [True], draw a line highlighting zero position if in range
- `xHighlightZeroColor`, [autom], color of the line highlighting the zero position
- `xTickLength`, [0.005], radius of the major ticks
- `xTickThickness`, [0.0025], thickness of the major ticks along their axis
- `xTickColor`, [automatic], color of major ticks
- `xMinorTicks`, [1], number of minor ticks between two major ticks
- `xPositionsAndLabels` [], assign custom tick positions and labels [(pos1, label1), ...]
- `xLabelPrecision`, [2], nr. of significative digits to be shown
- `xLabelSize`, [0.015], size of the numeric labels along axis
- `xLabelOffset`, [0.025], offset of numeric labels
- 'xFlipText'. [False], flip axis title and numeric labels orientation
- `tipSize`, [0.01], size of the arrow tip
- `limitRatio`, [0.04], below this ratio don't plot small axis
:param bool infinity: if True fugue point is set at infinity (no perspective effects)
:param bool sharecam: if False each renderer will have an independent vtkCamera
:param bool interactive: if True will stop after show() to allow interaction w/ window
:param bool offscreen: if True will not show the rendering window
:param float zoom: camera zooming factor
:param viewup: camera view-up direction ['x','y','z', or a vector direction]
:param float azimuth: add azimuth rotation of the scene, in degrees
:param float elevation: add elevation rotation of the scene, in degrees
:param float roll: add roll-type rotation of the scene, in degrees
:param dict camera: Camera parameters can further be specified with a dictionary
assigned to the ``camera`` keyword:
(E.g. `show(camera={'pos':(1,2,3), 'thickness':1000,})`)
- `pos`, `(list)`,
the position of the camera in world coordinates
- `focalPoint`, `(list)`,
the focal point of the camera in world coordinates
- `viewup`, `(list)`,
the view up direction for the camera
- `distance`, `(float)`,
set the focal point to the specified distance from the camera position.
- `clippingRange`, `(float)`,
distance of the near and far clipping planes along the direction of projection.
- `parallelScale`, `(float)`,
scaling used for a parallel projection, i.e. the height of the viewport
in world-coordinate distances. The default is 1. Note that the "scale" parameter works as
an "inverse scale", larger numbers produce smaller images.
This method has no effect in perspective projection mode.
- `thickness`, `(float)`,
set the distance between clipping planes. This method adjusts the far clipping
plane to be set a distance 'thickness' beyond the near clipping plane.
- `viewAngle`, `(float)`,
the camera view angle, which is the angular height of the camera view
measured in degrees. The default angle is 30 degrees.
This method has no effect in parallel projection mode.
The formula for setting the angle up for perfect perspective viewing is:
angle = 2*atan((h/2)/d) where h is the height of the RenderWindow
(measured by holding a ruler up to your screen) and d is the distance
from your eyes to the screen.
:param int interactorStyle: change the style of muose interaction of the scene
:param bool q: exit python session after returning.
"""
if len(inputobj) == 0:
interactive()
return
if 'numpy' in str(type(inputobj[0])):
from vedo.pyplot import plot as pyplot_plot
return pyplot_plot(*inputobj, **options)
mesh, u = _inputsort(inputobj)
mode = options.pop("mode", 'mesh')
ttime = options.pop("z", None)
add = options.pop("add", False)
wire = options.pop("wireframe", None)
c = options.pop("c", None)
color = options.pop("color", None)
if color is not None:
c = color
lc = options.pop("lc", None)
alpha = options.pop("alpha", 1)
lw = options.pop("lw", 0.5)
ps = options.pop("ps", None)
legend = options.pop("legend", None)
scbar = options.pop("scalarbar", 'v')
vmin = options.pop("vmin", None)
vmax = options.pop("vmax", None)
cmap = options.pop("cmap", None)
scale = options.pop("scale", 1)
scaleMeshFactors = options.pop("scaleMeshFactors", [1, 1, 1])
shading = options.pop("shading", 'phong')
text = options.pop("text", None)
style = options.pop("style", 'vtk')
isolns = options.pop("isolines", dict())
streamlines = options.pop("streamlines", dict())
warpZfactor = options.pop("warpZfactor", None)
warpYfactor = options.pop("warpYfactor", None)
lighting = options.pop("lighting", None)
exterior = options.pop("exterior", False)
fast = options.pop("fast", False)
returnActorsNoShow = options.pop("returnActorsNoShow", False)
# refresh axes titles for axes type = 8 (vtkCubeAxesActor)
settings.xtitle = options.pop("xtitle", 'x')
settings.ytitle = options.pop("ytitle", 'y')
settings.ztitle = options.pop("ztitle", 'z')
if settings.plotter_instance:
if settings.ytitle != 'x':
if 'at' in options.keys():
at = options['at']
else:
at = 0
aet = settings.plotter_instance.axes_instances
if len(aet) > at and isinstance(aet[at], vtk.vtkCubeAxesActor):
aet[at].SetXTitle(settings.xtitle)
if settings.ytitle != 'y':
if 'at' in options.keys():
at = options['at']
else:
at = 0
aet = settings.plotter_instance.axes_instances
if len(aet) > at and isinstance(aet[at], vtk.vtkCubeAxesActor):
aet[at].SetYTitle(settings.ytitle)
if settings.ytitle != 'z':
if 'at' in options.keys():
at = options['at']
else:
at = 0
aet = settings.plotter_instance.axes_instances
if len(aet) > at and isinstance(aet[at], vtk.vtkCubeAxesActor):
aet[at].SetZTitle(settings.ztitle)
# change some default to emulate standard behaviours
options['verbose'] = False # don't disturb
if style == 0 or style == 'vtk':
font = 'courier'
axes = options.pop('axes', None)
if axes is None:
options['axes'] = {
'xyGrid': False,
'yzGrid': False,
'zxGrid': False,
}
else:
options['axes'] = axes # put back
if cmap is None:
cmap = 'rainbow'
elif style == 1 or style == 'matplotlib':
font = 'courier'
bg = options.pop('bg', None)
if bg is None:
options['bg'] = 'white'
else:
options['bg'] = bg
axes = options.pop('axes', None)
if axes is None:
options['axes'] = {
'xyGrid': False,
'yzGrid': False,
'zxGrid': False,
}
else:
options['axes'] = axes # put back
if cmap is None:
cmap = 'viridis'
elif style == 2 or style == 'paraview':
font = 'arial'
bg = options.pop('bg', None)
if bg is None:
options['bg'] = (82, 87, 110)
else:
options['bg'] = bg
if cmap is None:
cmap = 'coolwarm'
elif style == 3 or style == 'meshlab':
font = 'courier'
bg = options.pop('bg', None)
if bg is None:
options['bg'] = (8, 8, 16)
options['bg2'] = (117, 117, 234)
else:
options['bg'] = bg
axes = options.pop('axes', None)
if axes is None:
options['axes'] = 10
else:
options['axes'] = axes # put back
if cmap is None:
cmap = 'afmhot'
elif style == 4 or style == 'bw':
font = 'courier'
bg = options.pop('bg', None)
if bg is None:
options['bg'] = (217, 255, 238)
else:
options['bg'] = bg
axes = options.pop('axes', None)
if axes is None:
options['axes'] = {
'xyGrid': False,
'yzGrid': False,
'zxGrid': False,
}
else:
options['axes'] = axes # put back
if cmap is None:
cmap = 'binary'
#################################################################
actors = []
if settings.plotter_instance:
if add:
actors = settings.plotter_instance.actors
elif at == 0: # just remove scalarbars
for sb in settings.plotter_instance.scalarbars:
settings.plotter_instance.renderer.RemoveActor(sb)
if mesh and ('mesh' in mode or 'color' in mode or 'displace' in mode):
actor = MeshActor(u, mesh, exterior=exterior, fast=fast)
actor.wireframe(wire)
actor.scale(scaleMeshFactors)
if lighting:
actor.lighting(lighting)
if ttime:
actor.z(ttime)
if legend:
actor.legend(legend)
if c:
actor.color(c)
if lc:
actor.lineColor(lc)
if alpha:
alpha = min(alpha, 1)
actor.alpha(alpha * alpha)
if lw:
actor.lineWidth(lw)
if wire and alpha:
lw1 = min(lw, 1)
actor.alpha(alpha * lw1)
if ps:
actor.pointSize(ps)
if shading:
if shading == 'phong':
actor.phong()
elif shading == 'flat':
actor.flat()
elif shading[0] == 'g':
actor.gouraud()
if 'displace' in mode: actor.move(u)
if cmap and (actor.u_values is not None) and c is None:
if u.value_rank() > 0: # will show the size of the vector
actor.pointColors(utils.mag(actor.u_values),
vmin=vmin,
vmax=vmax,
cmap=cmap)
else:
actor.pointColors(actor.u_values,
vmin=vmin,
vmax=vmax,
cmap=cmap)
if warpYfactor:
scals = actor.getPointArray()
if len(scals):
pts_act = actor.points(copy=False)
pts_act[:, 1] = scals * warpYfactor * scaleMeshFactors[1]
if warpZfactor:
scals = actor.getPointArray()
if len(scals):
pts_act = actor.points(copy=False)
pts_act[:, 2] = scals * warpZfactor * scaleMeshFactors[2]
if warpYfactor or warpZfactor:
actor.points(pts_act)
if vmin is not None and vmax is not None:
actor._mapper.SetScalarRange(vmin, vmax)
if scbar and c is None:
if '3d' in scbar:
actor.addScalarBar3D()
elif 'h' in scbar:
actor.addScalarBar(horizontal=True)
else:
actor.addScalarBar(horizontal=False)
if len(isolns) > 0:
ison = isolns.pop("n", 10)
isocol = isolns.pop("c", 'black')
isoalpha = isolns.pop("alpha", 1)
isolw = isolns.pop("lw", 1)
isos = actor.isolines(
n=ison).color(isocol).lw(isolw).alpha(isoalpha)
isoz = isolns.pop("z", None)
if isoz is not None: # kind of hack to make isolines visible on flat meshes
d = isoz
else:
d = actor.diagonalSize() / 400
isos.z(actor.z() + d)
actors.append(isos)
actors.append(actor)
#################################################################
if 'streamline' in mode:
mode = mode.replace('streamline', '')
str_act = MeshStreamLines(u, **streamlines)
actors.append(str_act)
#################################################################
if 'arrow' in mode or 'line' in mode:
if 'arrow' in mode:
arrs = MeshArrows(u, scale=scale)
else:
arrs = MeshLines(u, scale=scale)
if arrs:
if legend and 'mesh' not in mode:
arrs.legend(legend)
if c:
arrs.color(c)
arrs.color(c)
if alpha:
arrs.alpha(alpha)
actors.append(arrs)
#################################################################
if 'tensor' in mode:
pass #todo
#################################################################
for ob in inputobj:
inputtype = str(type(ob))
if 'vedo' in inputtype:
actors.append(ob)
if text:
textact = Text2D(text, font=font)
actors.append(textact)
if 'at' in options.keys() and 'interactive' not in options.keys():
if settings.plotter_instance:
N = settings.plotter_instance.shape[
0] * settings.plotter_instance.shape[1]
if options['at'] == N - 1:
options['interactive'] = True
if settings.plotter_instance:
for a2 in settings.collectable_actors:
if isinstance(a2, vtk.vtkCornerAnnotation):
if 0 in a2.renderedAt: # remove old message
settings.plotter_instance.remove(a2)
break
if len(actors) == 0:
print('Warning: no objects to show, check mode in plot(mode="...")')
if returnActorsNoShow:
return actors
return show(actors, **options)