discrete_coons_patch

compas.geometry.discrete_coons_patch(ab, bc, dc, ad)[source]

Creates a coons patch from a set of four or three boundary polylines (ab, bc, dc, ad).

Parameters:

ablist[[float, float, float] | compas.geometry.Point]: The XYZ coordinates of the vertices of the first polyline.
bclist[[float, float, float] | compas.geometry.Point]: The XYZ coordinates of the vertices of the second polyline.
dclist[[float, float, float] | compas.geometry.Point]: The XYZ coordinates of the vertices of the third polyline.
adlist[[float, float, float] | compas.geometry.Point]: The XYZ coordinates of the vertices of the fourth polyline.

Returns:

list[[float, float, float]]: The points of the coons patch.
list[list[int]]: List of faces, with every face a list of indices into the point list.

Notes

The vertices of the polylines are assumed to be in the following order:

b -----> c
^        ^
|        |
|        |
a -----> d

To create a triangular patch, one of the input polylines should be None. (Warning! This will result in duplicate vertices.)

For more information see [1] and [2].

References

[1]

[2]

Examples

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