ref: 8cc080311f65c04eb2f7e4fff5b0c4ab4133847c
dir: /sys/src/libgeometry/utils.c/
#include <u.h> #include <libc.h> #include <geometry.h> double flerp(double a, double b, double t) { return a + (b - a)*t; } double fberp(double a, double b, double c, Point3 bc) { return dotvec3(Vec3(a,b,c), bc); } double fclamp(double n, double min, double max) { return n < min? min: n > max? max: n; }