Filled spline

[Marco]

Hi,
is it possible to plot a 2D filled closed quadratic spline, given an array of control points?

I googled and searched in examples and demos... beziers in geometry... Path Collection in visuals...

Someone can show me how it is possible?

TNX,
Marco

[David Hoese]

Marco,

The plotting interface in vispy is pretty limited and still relatively young as far as number of design/dev hours put in to it. That said, do you have an example image from some other software so I know exactly what you are looking for?

Dave

[Marco]

Hi,
here few lines using Tkinter:

import tkinter
top = tkinter.Tk()
C = tkinter.Canvas(top, bg="white", height=300, width=300)

points = [100, 100, 150, 200, 50, 250, 200, 200, 100, 100]
smooth_shape = C.create_polygon(points, fill="blue", smooth="true")

# Only for display points:
control_polygon = C.create_polygon(points, fill="", outline='red')

C.pack()
top.mainloop()

Marco

[David Hoese]

Do you need plot axes or just to show the data on the screen? I'm 90% sure this functionality is not directly available in the plotting api, but there may be a Visual that does this. If that is true, then it shouldn't be too difficult to add the functionality.

Dave