Ditched the perlin I wrote before

utils/maths.cpp

@@ -0,0 +1,36 @@
+/* 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;
+}