Subdivision/Vector2D.cpp at master · Hai-Lin/Subdivision · GitHub

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
#include "Vector2D.h"

Vector2D normalize(Vector2D& v){
	float d=v.Length();
	if(d==0){
		d=0.1f;
	}
	v.x/=d;
	v.y/=d;
	return v;
}

Vector2D operator+(const Vector2D& v1,const Vector2D& v2){
	return Vector2D(v1.x+v2.x,v1.y+v2.y);
}


Vector2D operator-(const Vector2D& v1,const Vector2D& v2){
	return Vector2D(v1.x-v2.x,v1.y-v2.y);
}


Vector2D operator-(const Vector2D& v){
	return Vector2D(-v.x,-v.y);
}

Vector2D operator*(const Vector2D& v,float l){
	return Vector2D(v.x*l,v.y*l);
}
Vector2D operator*(float l, const Vector2D& v){
	return Vector2D(v.x*l,v.y*l);
}

Vector2D operator/(const Vector2D& v,float l){
	return Vector2D(v.x/l,v.y/l);
}


float operator^(const Vector2D& v1,const Vector2D& v2){
	return v1.x*v2.x+v1.y*v2.y;
}