show polyhedron in an interact

asked 2010-10-01 18:14:58 +0100

Philipp Schneider
223 ●5 ●8 ●17

Hi, I am trying to write an interact which lets the user enter a list of vertices and then shows the corresponding polyhedron.

My first attempt is the following. The problem is that Sage does not show the polyhedron.

@interact
def _(t1=text_control("Polyhedron"), vertices="[[1,0],[0,1],[0,0]]"):
    p=Polyhedron(vertices=eval(vertices))
    show(p)

Does anybody know how to fix this?

Thanks.

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answered 2010-10-01 18:43:44 +0100

mhampton
399 ●6 ●10 ●19

I don't completely understand why this is happening, but to work around it you can use the Polyhedron's projection method (the most flexible solution) or more simply the render_solid and render_wireframe methods. For example:

@interact
def _(t1=text_control("Polyhedron"), vertices="[[1,0],[0,1],[0,0]]"):
    p=Polyhedron(vertices=eval(vertices))
    show(p.render_solid(rgbcolor='green')+p.render_wireframe(rgbcolor='red'))

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Asked: 2010-10-01 18:14:58 +0100

Seen: 419 times

Last updated: Oct 01 '10

show polyhedron in an interact edit

1 Answer