ps4-fortniteserver/PS4Toolchain/docs/MD/Sample Helper Classes/PNG.md

PNG Helper Class

The PNG helper class is used by samples that need PNG decoding and draw images to the screen. It's provided as both an example and a helper class you can copy into your own code and hack on if you wish. Below is some documentation on the class and it's exposed methods. The source file can be found at /samples/_common/png.cpp.

Note: This class leverages the STB header library for PNG decoding

Constructor

PNG::PNG(const char *imagePath)

The PNG class constructor takes only one argument, being the path of the image to load, decode, and render.

Example

auto logo = new PNG("/app0/logo.png");

Destructor

PNG::~PNG()

The PNG class destructor frees the heap memory used to store the bitmap for the decoded PNG.

Example

delete logo;

Draw method

PNG::Draw(Scene2D *scene, int startX, int startY)

The draw method takes a Scene2D object instance and draws the loaded PNG to it at coordinates startX and startY (anchored to top left).