Heron: Internal util functions for polygon properties.
Description
This computes the area of a triangle given its three coordinates.
Usage
Heron(x, y)Area(x, y)
s2trArea(tr, R = 1)
flatArea(tr)
Stiffness(tr)
Value
the area of a 2d triangle
the area of a 2d polygon
the area of a triangle in S2
the area of a triangle
the stiffness matrix for a triangle
Arguments
- x, y
coordinate vectors.
- tr
the triangle coordinates
- R
the radius of the spherical domain
Warning
Internal functions, not exported.
Details
Function used internally to compute the area of a triangle.