resqpy.olio.intersection.lines_for_triangle

resqpy.olio.intersection.lines_for_triangle(line_set_intersections, triangle_index)[source]

From the result of line_set_triangles_intersects(), returns a list of lines intersecing given triangle.

Parameters:

line_set_intersections (numpy float array of shape (nl, nt, 3)) – where nl is the number of lines, nt is the number of triangles and the final axis is x,y,z; nan values indicate no intersection; this array is as returned by the line_set_triangles_intersects() function or the poly_line_triangles_intersects() function
triangle_index (integar) – the index of the triangle for which the intersecting line list is required

Returns:

(numpy 1D int array of size N, numpy 2D array of shape (N, 3)) –

the first of the pair of arrays: returned is a list of the indices of lines which intersect with the given triangle; the second array is the list of corresponding intersection points (each x,y,z)

Notes

if no lines intersect the triangle, both the resulting arrays will have size zero