Better cmake compatibility

include/math.h

@@ -1,42 +0,0 @@
-#pragma once
-
-const float DEG2RAD = 0.01745329251994329576923690768f;
-const float RAD2DEG = 57.2957795130823208767981548141f;
-
-inline float ToRadian(const float Degree) {
-	return (Degree * DEG2RAD);
-}
-
-inline float ToDegree(const float Radian) {
-	return (Radian * RAD2DEG);
-}
-
-struct Vec4 {
-	int x, y, z, w;
-	Vec4(int x, int y, int z, int w) : x(x), y(y), z(z), w(w) {}
-};
-
-struct Vec4f {
-	float x, y, z, w;
-	Vec4f(float x, float y, float z, float w) : x(x), y(y), z(z), w(w) {}
-};
-
-struct Vec3 {
-	int x, y, z;
-	Vec3(int x, int y, int z) : x(x), y(y), z(z) {}
-};
-
-struct Vec3f {
-	float x, y, z;
-	Vec3f(float x, float y, float z) : x(x), y(y), z(z) {}
-};
-
-struct Vec2 {
-	int x, y;
-	Vec2(int x, int y) : x(x), y(y) {}
-};
-
-struct Vec2f {
-	float x, y;
-	Vec2f(float x, float y) : x(x), y(y) {}
-};