invert_quad_mapping

mesh_geometry::utils::jacobian

Function invert_quad_mapping 

Source 
pub fn invert_quad_mapping<T: Float>(
    xi: T,
    eta: T,
    p: Point2<T>,
    a: Point2<T>,
    b: Point2<T>,
    c: Point2<T>,
    d: Point2<T>,
    tol: T,
    max_iters: usize,
) -> Option<(T, T)>
Expand description

Given physical point p and quad corners a,b,c,d, find (xi,eta) via Newton: