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- basisVectors(vertices, components=3, ccw=1)
- Calculate basis vectors for given triangle vertices
vertices -- x*components array of vertex
coordinates, with x a multiple of 3, that
is, the array shape is (x,components). If
shape(vertices) is length 2 and the second
component is 3 or 4, we don't reshape,
otherwise we reshape as appropriate
components -- number of components in an
individual coordinate, see note for
vertices.
ccw -- whether to use counter-clock-wise
winding
returns two x/3 arrays of vectors, (second
minus first, third minus second), that is,
there are two arrays of vectors, each of
which is 1/3 of the length of the original
vertices array.
- centers(vertices, vertexCount=3, components=3)
- Calculate polygon center for given polygon vertices
vertices -- x*components array of vertex
coordinates, with x a multiple of vertexCount
vertexCount -- the number of vertices in a given polygon
components -- the number of coordinates in a given vertex
returns x-length array of center coordinates
Note: if the vertices array is not an even multiple
of vertexCount by components floats, you'll get a
ValueError raised.
- normalPerFace(vertices, ccw=1)
- Calculate triangle normals for given triangle vertices
vertices -- x*3 array of vertex
coordinates, with x a multiple of 3
ccw -- whether to use counter-clock-wise
winding
returns array of normal vectors
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