minor changes. started writting own 3d math library and started implementation for linux/mac

uff.cpp

@@ -0,0 +1,46 @@
+class Vec3 {
+    public:
+    float x, y, z;
+
+    Vec3(float x, float y, float z) {
+        this->x = x;
+        this->y = y;
+        this->z = z;
+    }
+
+    Vec3 add (Vec3 other) {
+        Vec3 result (x + other.x, y + other.y, z + other.z);
+        return result;
+    }
+
+    Vec3 subtract (Vec3 other) {
+        Vec3 result (x - other.x, y - other.y, z - other.z);
+        return result;
+    }
+
+    Vec3 scalar (float scalar) {
+        Vec3 result (x * scalar, y * scalar, z * scalar);
+        return result;
+    }
+
+    float dot (Vec3 other) {
+        float result (x * other.x + y * other.y + z * other.z);
+        return result;
+    }
+
+    Vec3 cross (Vec3 other) {
+        Vec3 result (y*other.z - z*other.y, z*other.x - x*other.z, x*other.y - y*other.x);
+        return result;
+    }
+
+    float length () {
+        float result = sqrt(x*x + y*y + z*z);
+        return result;
+    }
+
+    Vec3 normalize () {
+        float len = sqrt(x*x + y*y + z*z);
+        Vec3 result (x / len, y / len, z / len);
+        return result;
+    }
+};