From 600bf0351476a5a21aabb5429132ddf7f52ac0b9 Mon Sep 17 00:00:00 2001 From: aap Date: Wed, 15 May 2019 16:52:37 +0200 Subject: first commit --- src/math/Vector2D.h | 37 +++++++++++++++++++++++++++++++++++++ 1 file changed, 37 insertions(+) create mode 100644 src/math/Vector2D.h (limited to 'src/math/Vector2D.h') diff --git a/src/math/Vector2D.h b/src/math/Vector2D.h new file mode 100644 index 00000000..3c0013d4 --- /dev/null +++ b/src/math/Vector2D.h @@ -0,0 +1,37 @@ +#pragma once + +class CVector2D +{ +public: + float x, y; + CVector2D(void) {} + CVector2D(float x, float y) : x(x), y(y) {} + CVector2D(const CVector &v) : x(v.x), y(v.y) {} + float Magnitude(void) const { return sqrt(x*x + y*y); } + float MagnitudeSqr(void) const { return x*x + y*y; } + + void Normalise(void){ + float sq = MagnitudeSqr(); + if(sq > 0.0f){ + float invsqrt = 1.0f/sqrt(sq); + x *= invsqrt; + y *= invsqrt; + }else + x = 0.0f; + } + CVector2D operator-(const CVector2D &rhs) const { + return CVector2D(x-rhs.x, y-rhs.y); + } + CVector2D operator+(const CVector2D &rhs) const { + return CVector2D(x+rhs.x, y+rhs.y); + } + CVector2D operator*(float t) const { + return CVector2D(x*t, y*t); + } +}; + +inline float +CrossProduct2D(const CVector2D &v1, const CVector2D &v2) +{ + return v1.x*v2.y - v1.y*v2.x; +} -- cgit v1.2.3