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66 lines
2.9 KiB
C
66 lines
2.9 KiB
C
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#ifndef _VECTOR2F_H_
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#define _VECTOR2F_H_
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#include <assert.h>
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class Vector3f;
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class Vector4f;
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class Vector2f
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{
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public:
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Vector2f() { }
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Vector2f(const float f) : mX(f), mY(f) { }
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Vector2f(const float x, const float y) : mX(x), mY(y) { }
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explicit Vector2f(const Vector3f& v) : mX(((Vector2f&)v).mX), mY(((Vector2f&)v).mY) { }
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explicit Vector2f(const Vector4f& v) : mX(((Vector2f&)v).mX), mY(((Vector2f&)v).mY) { }
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const bool operator==(const Vector2f& other) const { return ((mX == other.mX) && (mY == other.mY)); }
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const bool operator!=(const Vector2f& other) const { return ((mX != other.mX) || (mY != other.mY)); }
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const Vector2f operator+(const Vector2f& other) const { return { mX + other.mX, mY + other.mY }; }
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const Vector2f operator-(const Vector2f& other) const { return { mX - other.mX, mY - other.mY }; }
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const Vector2f operator*(const Vector2f& other) const { return { mX * other.mX, mY * other.mY }; }
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const Vector2f operator/(const Vector2f& other) const { return { mX / other.mX, mY / other.mY }; }
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const Vector2f operator+(const float& other) const { return { mX + other, mY + other }; }
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const Vector2f operator-(const float& other) const { return { mX - other, mY - other }; }
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const Vector2f operator*(const float& other) const { return { mX * other, mY * other }; }
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const Vector2f operator/(const float& other) const { return { mX / other, mY / other }; }
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const Vector2f operator-() const { return { -mX , -mY }; }
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Vector2f& operator+=(const Vector2f& other) { *this = *this + other; return *this; }
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Vector2f& operator-=(const Vector2f& other) { *this = *this - other; return *this; }
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Vector2f& operator*=(const Vector2f& other) { *this = *this * other; return *this; }
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Vector2f& operator/=(const Vector2f& other) { *this = *this / other; return *this; }
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Vector2f& operator+=(const float& other) { *this = *this + other; return *this; }
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Vector2f& operator-=(const float& other) { *this = *this - other; return *this; }
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Vector2f& operator*=(const float& other) { *this = *this * other; return *this; }
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Vector2f& operator/=(const float& other) { *this = *this / other; return *this; }
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float& operator[](const int index) { assert(index < 2 && "index out of range"); return (&mX)[index]; }
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const float& operator[](const int index) const { assert(index < 2 && "index out of range"); return (&mX)[index]; }
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float& x() { return mX; }
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float& y() { return mY; }
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const float& x() const { return mX; }
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const float& y() const { return mY; }
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inline Vector2f& round() { mX = (int)(mX + 0.5f); mY = (int)(mY + 0.5f); return *this; }
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static const Vector2f Zero() { return { 0, 0 }; }
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static const Vector2f UnitX() { return { 1, 0 }; }
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static const Vector2f UnitY() { return { 0, 1 }; }
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private:
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float mX;
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float mY;
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};
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#endif
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