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- """Interactively cut a mesh by drawing free-hand a spline in space"""
- # The tool can also be invoked from command line e.g.: > vedo --edit mesh.ply
- import vedo
- from vedo.applications import FreeHandCutPlotter
- #### This class is a simplified version of the above, shown here as an example: #######
- #
- # class FreeHandCutPlotter(vedo.Plotter):
- # def __init__(self, mesh):
- # vedo.Plotter.__init__(self)
- # self.mesh = mesh
- # self.drawmode = False
- # self.cpoints = []
- # self.points = None
- # self.spline = None
- # self.msg = "Right-click and move to draw line\n"
- # self.msg += "Second right-click to stop drawing\n"
- # self.msg += "Press z to cut mesh"
- # self.txt2d = vedo.Text2D(self.msg, pos='top-left', font="Bongas")
- # self.txt2d.c("white").background("green4", alpha=1)
- # self.add_callback('KeyPress', self.onKeyPress)
- # self.add_callback('RightButton', self.onRightClick)
- # self.add_callback('MouseMove', self.onMouseMove)
- # def onRightClick(self, evt):
- # self.drawmode = not self.drawmode # toggle mode
- # def onMouseMove(self, evt):
- # if self.drawmode:
- # self.remove([self.points, self.spline])
- # # make this 2d-screen point 3d:
- # cpt = self.compute_world_coordinate(evt.picked2d)
- # self.cpoints.append(cpt)
- # self.points = vedo.Points(self.cpoints, r=8).c('black')
- # if len(self.cpoints) > 2:
- # self.spline = vedo.Line(self.cpoints, closed=True).lw(5).c('red5')
- # self.add([self.points, self.spline]).render()
- # def onKeyPress(self, evt):
- # if evt.keypress == 'z' and self.spline: # cut mesh with a ribbon-like surf.
- # vedo.printc("Cutting the mesh please wait..", invert=True)
- # tol = self.mesh.diagonal_size()/2 # size of ribbon
- # pts = self.spline.points()
- # n = vedo.fit_plane(pts, signed=True).normal # compute normal vector
- # rib = vedo.Ribbon(pts - tol*n, pts + tol*n, closed=True)
- # self.mesh.cut_with_mesh(rib)
- # self.remove([self.spline, self.points]).render()
- # self.cpoints, self.points, self.spline = [], None, None
- # def start(self, **kwargs):
- # return self.show(self.txt2d, self.mesh, **kwargs)
- #
- ######################################################################################
- vedo.settings.use_parallel_projection = True # to avoid perspective artifacts
- msh = vedo.Volume(vedo.dataurl+'embryo.tif').isosurface().color('gold', 0.25) # Mesh
- plt = FreeHandCutPlotter(msh)
- plt.add_hover_legend()
- #plt.init(some_list_of_initial_pts) #optional!
- plt.start(axes=1, bg2='lightblue').close()
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