mirror of https://git.rip/DMCA_FUCKER/re3.git
38 lines
804 B
C++
38 lines
804 B
C++
#pragma once
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class CVector2D
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{
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public:
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float x, y;
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CVector2D(void) {}
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CVector2D(float x, float y) : x(x), y(y) {}
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CVector2D(const CVector &v) : x(v.x), y(v.y) {}
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float Magnitude(void) const { return sqrt(x*x + y*y); }
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float MagnitudeSqr(void) const { return x*x + y*y; }
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void Normalise(void){
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float sq = MagnitudeSqr();
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if(sq > 0.0f){
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float invsqrt = 1.0f/sqrt(sq);
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x *= invsqrt;
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y *= invsqrt;
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}else
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x = 0.0f;
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}
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CVector2D operator-(const CVector2D &rhs) const {
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return CVector2D(x-rhs.x, y-rhs.y);
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}
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CVector2D operator+(const CVector2D &rhs) const {
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return CVector2D(x+rhs.x, y+rhs.y);
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}
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CVector2D operator*(float t) const {
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return CVector2D(x*t, y*t);
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}
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};
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inline float
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CrossProduct2D(const CVector2D &v1, const CVector2D &v2)
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{
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return v1.x*v2.y - v1.y*v2.x;
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}
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