Make measure string go brrrrrrr

include/JGL/Font.h

@@ -32,7 +32,7 @@ namespace JGL
         /// @param text The string to measure.
         /// @param ptSize The font size at which to measure.
         /// @return The size-in-pixels that would contain the entire text.
-        Vector2 MeasureString(const std::string& text, float ptSize);
+        Vector2 MeasureString(const std::string& text, unsigned int ptSize);
     public:
         int index = 0;
         FT_Face face;

include/JGL/FontCache.h

@@ -61,3 +61,7 @@ public:
     void eraseFont(CachedFont* font);
     void purgeCache();
 };
+
+namespace JGL {
+    inline FontCache fontCache;
+}

include/JGL/JGL.h

@@ -106,10 +106,12 @@ namespace JGL {
         void DrawSprite(GLuint texture, float x, float y, float w, float h, u8 opacity = 255, Inversion::Inversion inversion = Inversion::None);
 
         ///Draws a non axis-aligned fill rect to the screen.
+        ///The order of the vertices must be such that if you were to connect them you'd never go diagonally across the quad.
         void FillQuad(const Color4& color, const Vector2& v1, const Vector2& v2, const Vector2& v3, const Vector2& v4);
         void FillQuad(const Color3& color, const Vector2& v1, const Vector2& v2, const Vector2& v3, const Vector2& v4);
 
         ///Draws a non axis-aligned outline rect to the screen.
+        ///The order of the vertices must be such that if you were to connect them you'd never go diagonally across the quad.
         void OutlineQuad(const Color4& color, const Vector2& v1, const Vector2& v2, const Vector2& v3, const Vector2& v4, float thickness = 1);
         void OutlineQuad(const Color3& color, const Vector2& v1, const Vector2& v2, const Vector2& v3, const Vector2& v4, float thickness = 1);