src/Vec2d.cc

   1 #include "Vec2d.hh"
   2
   3 #include <cmath>
   4
   5 #include "Configurations.hh"
   6
   7 Vec2d::Vec2d() {}
   8 Vec2d::Vec2d(double x, double y) : x(x), y(y) {}
   9 Vec2d::Vec2d(const Vec3d& v1, const Vec3d& v2, double z)
  10 {
  11     x = (v1.x - v2.x) * (z - v1.z) / (v1.z - v2.z) + v1.x;
  12     y = (v1.y - v2.y) * (z - v1.z) / (v1.z - v2.z) + v1.y;
  13 }
  14
  15 bool Vec2d::equal(const Vec2d& v) const
  16 {
  17     if (fabs(x - v.x) < thr && fabs(y - v.y) < thr) return true;
  18     return false;
  19 }
  20 bool Vec2d::equal(const Vec2d* v) const { return equal(*v); }
  21 double Vec2d::sum() const { return x + y; }
  22
  23 std::istream& operator>>(std::istream& s, Vec2d& v) { return s >> v.x >> v.y; }
  24 std::istream& operator>>(std::istream& s, Vec2d* v)
  25 {
  26     return s >> v->x >> v->y;
  27 }
  28 std::ostream& operator<<(std::ostream& s, const Vec2d& v)
  29 {
  30     return s << v.x << "," << v.y;
  31 }
  32 std::ostream& operator<<(std::ostream& s, const Vec2d* v)
  33 {
  34     return s << v->x << "," << v->y;
  35 }