Little documentation update

src/dawn/visualnovel/components/SimpleVisualNovelBackground.cpp

@@ -32,7 +32,8 @@ std::vector<SceneItemComponent*> SimpleVisualNovelBackground::getDependencies(){
 void SimpleVisualNovelBackground::setTexture(Texture *texture) {
   auto param = this->material->getShader()->getParameterByName("u_Text");
   this->material->textureValues[param] = texture;
-
+  
+  // Since we go both negative and positive, actual height is doubled
   float_t aspect = (float_t)texture->getWidth() / (float_t)texture->getHeight();
   float_t height = 0.5f;
 

src/dawn/visualnovel/components/SimpleVisualNovelBackground.hpp

@@ -12,11 +12,32 @@ namespace Dawn {
       Material *material;
       MeshHost *meshHost;
 
+      /**
+       * Create a simple Visual Novel Background prefab.
+       * 
+       * @param scene Scene to add this background to.
+       * @return Created background Scene Item.
+       */
       static SimpleVisualNovelBackground * create(Scene *scene);
 
+      /**
+       * Construct a Simple Visual Novel Background. Simple Background is used
+       * for a quick up and running Visual Novel scene, but does not have any
+       * special effects or controls beyond updating a texture and mesh.
+       * 
+       * @param item Scene Item this background belongs to.
+       */
       SimpleVisualNovelBackground(SceneItem *item);
+      
       std::vector<SceneItemComponent*> getDependencies() override;
       void onStart() override;
+
+      /**
+       * Set the texture for the background. Auto updates the material and the
+       * dimensions of the internal quad.
+       * 
+       * @param texture Texture to use.
+       */
       void setTexture(Texture *texture);
   };
 }