101 lines
8.5 KiB
C++
101 lines
8.5 KiB
C++
/*
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Operator Overloading
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"Yes, ok, the video had a bug..." - javidx9
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License (OLC-3)
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~~~~~~~~~~~~~~~
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Copyright 2018-2019 OneLoneCoder.com
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Redistribution and use in source and binary forms, with or without
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modification, are permitted provided that the following conditions
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are met:
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1. Redistributions or derivations of source code must retain the above
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copyright notice, this list of conditions and the following disclaimer.
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2. Redistributions or derivative works in binary form must reproduce
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the above copyright notice. This list of conditions and the following
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disclaimer must be reproduced in the documentation and/or other
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materials provided with the distribution.
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3. Neither the name of the copyright holder nor the names of its
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contributors may be used to endorse or promote products derived
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from this software without specific prior written permission.
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THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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Relevant Video: https://youtu.be/4FyeBUPrwKY
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Links
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~~~~~
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YouTube: https://www.youtube.com/javidx9
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Discord: https://discord.gg/WhwHUMV
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Twitter: https://www.twitter.com/javidx9
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Twitch: https://www.twitch.tv/javidx9
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GitHub: https://www.github.com/onelonecoder
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Patreon: https://www.patreon.com/javidx9
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Homepage: https://www.onelonecoder.com
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Author
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~~~~~~
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David Barr, aka javidx9, ©OneLoneCoder 2019
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*/
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#include <iostream>
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// -== Operator Overloading ==-
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template <class T>
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struct v2d_generic
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{
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T x = 0;
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T y = 0;
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v2d_generic() : x(0), y(0) { }
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v2d_generic(T _x, T _y) : x(_x), y(_y) { }
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v2d_generic(const v2d_generic& v) : x(v.x), y(v.y){ }
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T mag() {return sqrt(x * x + y * y); }
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v2d_generic norm() {T r = 1 / mag(); return v2d_generic(x*r, y*r); }
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v2d_generic perp() {return v2d_generic(-y, x); }
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T dot(const v2d_generic& rhs) {return this->x * rhs.x + this->y * rhs.y; }
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T cross(const v2d_generic& rhs) {return this->x * rhs.y - this->y * rhs.x; }
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v2d_generic operator + (const v2d_generic& rhs) {return v2d_generic(this->x + rhs.x, this->y + rhs.y); }
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v2d_generic operator - (const v2d_generic& rhs) {return v2d_generic(this->x - rhs.x, this->y - rhs.y); }
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v2d_generic operator * (const T& rhs) {return v2d_generic(this->x * rhs, this->y * rhs); }
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v2d_generic operator / (const T& rhs) {return v2d_generic(this->x / rhs, this->y / rhs); }
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v2d_generic& operator += (const v2d_generic& rhs) {this->x += rhs.x; this->y += rhs.y; return *this; }
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v2d_generic& operator -= (const v2d_generic& rhs) {this->x -= rhs.x; this->y -= rhs.y; return *this; }
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v2d_generic& operator *= (const T& rhs) {this->x *= rhs; this->y *= rhs; return *this; }
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v2d_generic& operator /= (const T& rhs) {this->x /= rhs; this->y /= rhs; return *this; }
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T& operator [] (std::size_t i) {return *((T*)this + i); /* <-- D'oh :( */ }
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};
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typedef v2d_generic<float> vf2d;
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typedef v2d_generic<double> vd2d;
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int main()
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{
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vf2d a = { 1.0f, 2.5f };
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vf2d b = { 2.0f, 3.5f };
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vf2d c = { 3.0f, 4.5f };
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a[1] = 8.0f;
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float f = a[0];
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a *= 89.4f;
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a += b - c * 7.0f + a / (b + c * 2.0f).mag();
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return 0;
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}
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