Implement documentation + A special case check on DrawArc.

include/JGL/JGL.h

@@ -292,8 +292,8 @@ namespace JGL {
         /// @param radius The radius of the partial circle to be drawn. AKA Half the diameter.
         /// @param arc_begin The point (0 - 2pi) around a unit-circle of which to start the arc.
         /// @param arc_end The point (0 - 2pi) around a unit-circle of which to start the arc.
-        /// @param subdivisions
-        /// @param thickness
+        /// @param subdivisions The accuracy of the approximation of the circle, measured in iteration steps taken.
+        /// @param thickness The line-width to draw the arc with.
         void DrawArc(const Color4& color, const Vector2& center, float radius, float arc_begin, float arc_end,
                      unsigned int subdivisions, float thickness);
 
@@ -321,7 +321,24 @@ namespace JGL {
         void WireframeCapsule(const Color3& color, const Capsule& cap, float thickness = 1);
         void FillTriangleMesh(const Color3& color, const TriangleMesh& mesh);
         void WireframeTriangleMesh(const Color3& color, const TriangleMesh& mesh, float thickness = 1);
+
+        /// Draws a string of text in 3D space, with an arbitrary rotation.
+        /// @param color
+        /// @param text
+        /// @param pos
+        /// @param scale
+        /// @param size
+        /// @param font
+        /// @param angle
+        /// @param draw_back_face
         void DrawString(const Color4& color, const std::string& text, const Vector3& pos, float scale, u32 size, const Font& font, const EulerAngle& angle = {0, 0, 0}, bool draw_back_face = false);
+
+        /// Draws a string of text in 3D space that is always facing the exact direction of the camera projection.
+        void DrawBillboardString();
+
+        /// Draws a texture sprite in 3D space that is always facing the exact direction of the camera projection.
+        void DrawBillboardSprite();
+
         void DrawSprite();
         void DrawMatrixGizmo     (const Matrix3x3&, const Vector3&);
         void DrawMatrixGizmo     (const Matrix4x4&);