You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
100 lines
8.5 KiB
100 lines
8.5 KiB
/*
|
|
Operator Overloading
|
|
"Yes, ok, the video had a bug..." - javidx9
|
|
|
|
License (OLC-3)
|
|
~~~~~~~~~~~~~~~
|
|
|
|
Copyright 2018-2019 OneLoneCoder.com
|
|
|
|
Redistribution and use in source and binary forms, with or without
|
|
modification, are permitted provided that the following conditions
|
|
are met:
|
|
|
|
1. Redistributions or derivations of source code must retain the above
|
|
copyright notice, this list of conditions and the following disclaimer.
|
|
|
|
2. Redistributions or derivative works in binary form must reproduce
|
|
the above copyright notice. This list of conditions and the following
|
|
disclaimer must be reproduced in the documentation and/or other
|
|
materials provided with the distribution.
|
|
|
|
3. Neither the name of the copyright holder nor the names of its
|
|
contributors may be used to endorse or promote products derived
|
|
from this software without specific prior written permission.
|
|
|
|
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
|
|
"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
|
|
LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
|
|
A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
|
|
HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
|
|
SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
|
|
LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
|
|
DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
|
|
THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
|
|
(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
|
|
OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
|
|
|
Relevant Video: https://youtu.be/4FyeBUPrwKY
|
|
|
|
Links
|
|
~~~~~
|
|
YouTube: https://www.youtube.com/javidx9
|
|
Discord: https://discord.gg/WhwHUMV
|
|
Twitter: https://www.twitter.com/javidx9
|
|
Twitch: https://www.twitch.tv/javidx9
|
|
GitHub: https://www.github.com/onelonecoder
|
|
Patreon: https://www.patreon.com/javidx9
|
|
Homepage: https://www.onelonecoder.com
|
|
|
|
Author
|
|
~~~~~~
|
|
David Barr, aka javidx9, ©OneLoneCoder 2019
|
|
*/
|
|
|
|
|
|
#include <iostream>
|
|
|
|
// -== Operator Overloading ==-
|
|
template <class T>
|
|
struct v2d_generic
|
|
{
|
|
T x = 0;
|
|
T y = 0;
|
|
|
|
v2d_generic() : x(0), y(0) { }
|
|
v2d_generic(T _x, T _y) : x(_x), y(_y) { }
|
|
v2d_generic(const v2d_generic& v) : x(v.x), y(v.y){ }
|
|
T mag() {return sqrt(x * x + y * y); }
|
|
v2d_generic norm() {T r = 1 / mag(); return v2d_generic(x*r, y*r); }
|
|
v2d_generic perp() {return v2d_generic(-y, x); }
|
|
T dot(const v2d_generic& rhs) {return this->x * rhs.x + this->y * rhs.y; }
|
|
T cross(const v2d_generic& rhs) {return this->x * rhs.y - this->y * rhs.x; }
|
|
v2d_generic operator + (const v2d_generic& rhs) {return v2d_generic(this->x + rhs.x, this->y + rhs.y); }
|
|
v2d_generic operator - (const v2d_generic& rhs) {return v2d_generic(this->x - rhs.x, this->y - rhs.y); }
|
|
v2d_generic operator * (const T& rhs) {return v2d_generic(this->x * rhs, this->y * rhs); }
|
|
v2d_generic operator / (const T& rhs) {return v2d_generic(this->x / rhs, this->y / rhs); }
|
|
v2d_generic& operator += (const v2d_generic& rhs) {this->x += rhs.x; this->y += rhs.y; return *this; }
|
|
v2d_generic& operator -= (const v2d_generic& rhs) {this->x -= rhs.x; this->y -= rhs.y; return *this; }
|
|
v2d_generic& operator *= (const T& rhs) {this->x *= rhs; this->y *= rhs; return *this; }
|
|
v2d_generic& operator /= (const T& rhs) {this->x /= rhs; this->y /= rhs; return *this; }
|
|
T& operator [] (std::size_t i) {return *((T*)this + i); /* <-- D'oh :( */ }
|
|
};
|
|
|
|
typedef v2d_generic<float> vf2d;
|
|
typedef v2d_generic<double> vd2d;
|
|
|
|
int main()
|
|
{
|
|
vf2d a = { 1.0f, 2.5f };
|
|
vf2d b = { 2.0f, 3.5f };
|
|
vf2d c = { 3.0f, 4.5f };
|
|
|
|
a[1] = 8.0f;
|
|
float f = a[0];
|
|
a *= 89.4f;
|
|
a += b - c * 7.0f + a / (b + c * 2.0f).mag();
|
|
|
|
return 0;
|
|
}
|
|
|
|
|