Odd behavior of extrusions

[Harlan Gilbert]

This is peculiar: seemingly identical extrusions produce different results.

Whichever extrusion is executed first forms a closed rectangle

Whichever extrusion is executed second forms a U-shape (one side is not completed).

 

Web VPython 3.2

rect = shapes.rectangle(width=.1, height = .1)
path = paths.rectangle(width = 2)
extrusion (path=path, shape = rect, color=color.red, pos = vec(0,-1,0))
extrusion (path=path, shape = rect, color=color.red, pos = vec(0,1,0))

The order does not matter; whichever extrusion is first gives a closed shape.

Any thoughts?

Harlan

[Bruce Sherwood]

The following works properly, so apparently the bug is that the extrusion machinery overwrites the path:

rect = shapes.rectangle(width=.1, height = .1)
path = paths.rectangle(width = 2)
extrusion (path=path, shape = rect, color=color.red, pos = vec(0,-1,0))
path = paths.rectangle(width = 2)

extrusion (path=path, shape = rect, color=color.green, pos = vec(0,1,0))

Thanks much for the report.

Bruce

[Bruce Sherwood]

Now fixed. As usual, you might need to clear your browser cache in order to get the update.

Bruce

[Harlan Gilbert]

Thanks!

On Sat, Aug 6, 2022 at 4:28 PM Bruce Sherwood <bruce.s...@gmail.com> wrote:

Now fixed. As usual, you might need to clear your browser cache in order to get the update.

Bruce

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Harlan Gilbert, Ph.D.

High School Chair and Math, Physics, Computer Science, and Philosophy Teacher

Green Meadow Waldorf High School

Chestnut Ridge, NY 10977

(845) 356-2514 x. 320