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#pragma once
#include <math.h>
struct vec {
double x, y;
vec(double xx, double yy) : x(xx), y(yy) {}
double norm() const {
return sqrt(x*x + y*y);
}
double angle() const {
double xx = x / norm();
double a = acos(x);
return (y > 0 ? a : -a);
}
vec operator+ (const vec& o) const {
return vec(x + o.x, y + o.y);
}
};
struct line {
// Line defined by ax + by + c = 0
double a, b, c;
line(double aa, double bb, double cc) : a(aa), b(bb), c(cc) {}
double dist(vec p) const {
// TODO
return 1;
}
double angle() const {
return vec(-b, a).angle();
}
};
struct segment {
vec a, b;
segment(vec pa, vec pb) : a(pa), b(pb), {}
double dist(vec p) const {
// TODO
return 1;
}
};
struct circle {
vec c;
double r;
circle(double x, double y, double rr) : c(x, y), r(rr) {}
circle(vec cc, double rr) : c(cc), r(rr) {}
};
struct circpoint {
circle c;
double theta;
circpoint(circle cc, double th) : c(cc), theta(th) {}
vec pos() const {
return c.c + vec(c.r * cos(theta), c.r * sin(theta));
}
};
struct circarc {
circle c;
double theta1, theta2;
circarc(circle cc, double tha, double thb) : c(cc), theta1(tha), theta2(thb) {}
double dist(vec p) const {
// TODO
return 1;
}
};
/* vim: set ts=4 sw=4 tw=0 noet :*/
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