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#include "vectors.h"
vec2 vec2_line_norm(vec2 a, vec2 b)
{
vec2 d = {b.x - a.x, b.y - a.y};
float md = sqrt (d.x*d.x + d.y*d.y);
d.x/=md;
d.y/=md;
return d;
}
double vec2d_length(vec2d v){
return sqrt (v.x*v.x + v.y*v.y);
}
float vec2_length(vec2 v){
return sqrt (v.x*v.x + v.y*v.y);
}
vec2 vec2_norm(vec2 a)
{
float m = sqrt (a.x*a.x + a.y*a.y);
vec2 d = {a.x/m, a.y/m};
return d;
}
vec2d vec2d_norm(vec2d a)
{
double m = sqrt (a.x*a.x + a.y*a.y);
vec2d d = {a.x/m, a.y/m};
return d;
}
vec2d vec2d_mult(vec2d a, double m){
vec2d r = {a.x*m,a.y*m};
return r;
}
vec2 vec2_mult(vec2 a, float m){
vec2 r = {a.x*m,a.y*m};
return r;
}
vec2d vec2d_line_norm(vec2d a, vec2d b)
{
vec2d d = {b.x - a.x, b.y - a.y};
double md = sqrt (d.x*d.x + d.y*d.y);
d.x/=md;
d.y/=md;
return d;
}
vec2d vec2d_perp (vec2d a){
vec2d vp = {a.y, -a.x};
return vp;
}
vec2 vec2_perp (vec2 a){
vec2 vp = {a.y, -a.x};
return vp;
}
vec2 vec2d_to_vec2(vec2d vd){
vec2 v = {vd.x,vd.y};
return v;
}
vec2 vec2_add (vec2 a, vec2 b){
vec2 r = {a.x + b.x, a.y + b.y};
return r;
}
vec2d vec2d_add (vec2d a, vec2d b){
vec2d r = {a.x + b.x, a.y + b.y};
return r;
}
vec2 vec2_sub (vec2 a, vec2 b){
vec2 r = {a.x - b.x, a.y - b.y};
return r;
}
vec2d vec2d_sub (vec2d a, vec2d b){
vec2d r = {a.x - b.x, a.y - b.y};
return r;
}
bool vec2_equ (vec2 a, vec2 b){
if ((a.x == b.x) && (a.y == b.y))
return true;
return false;
}
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