| // included by QuadraticParameterization.cpp | |
| // accesses internal functions to validate parameterized coefficients | |
| #include "Parameterization_Test.h" | |
| bool point_on_parameterized_curve(const Quadratic& quad, const _Point& point) { | |
| QuadImplicitForm q(quad); | |
| double xx = q.x2() * point.x * point.x; | |
| double xy = q.xy() * point.x * point.y; | |
| double yy = q.y2() * point.y * point.y; | |
| double x = q.x() * point.x; | |
| double y = q.y() * point.y; | |
| double c = q.c(); | |
| double sum = xx + xy + yy + x + y + c; | |
| return approximately_zero(sum); | |
| } |