Kayne Ruse
36 lines
1.2 KiB
C++
36 lines
1.2 KiB
C++
/* Copyright: (c) Kayne Ruse 2014
|
|
*
|
|
* This software is provided 'as-is', without any express or implied
|
|
* warranty. In no event will the authors be held liable for any damages
|
|
* arising from the use of this software.
|
|
*
|
|
* Permission is granted to anyone to use this software for any purpose,
|
|
* including commercial applications, and to alter it and redistribute it
|
|
* freely, subject to the following restrictions:
|
|
*
|
|
* 1. The origin of this software must not be misrepresented; you must not
|
|
* claim that you wrote the original software. If you use this software
|
|
* in a product, an acknowledgment in the product documentation would be
|
|
* appreciated but is not required.
|
|
*
|
|
* 2. Altered source versions must be plainly marked as such, and must not be
|
|
* misrepresented as being the original software.
|
|
*
|
|
* 3. This notice may not be removed or altered from any source
|
|
* distribution.
|
|
*/
|
|
#include "maths.hpp"
|
|
|
|
double curve(double x) {
|
|
return 3.0 * pow(x, 2.0) - 2.0 * pow(x, 3.0);
|
|
}
|
|
|
|
double snap(double x, double base) {
|
|
//snap to a grid (floating point version)
|
|
return floor(x / base) * base;
|
|
}
|
|
|
|
double scalarProduct(Vector2 lhs, Vector2 rhs) {
|
|
//the dot product
|
|
return lhs.x * rhs.x + lhs.y * rhs.y;
|
|
} |