This example shows how to use custom (FBO) source functionality with ofxPiMapper. Below you can see a list of custom sources and feel free to add your own via pull requests!
- ScanlineSource
- SlideShowSource
To build your own source, one should start by extending the FboSource class. When the source is ready, it should be instantiated in the ofApp class and passed via mapper.registerFboSource(...source) function before the mapper.setup() call. This will make the source name to appear under FBO Sources category in the source selection mode.
Look at the source code of the custom sources to understand how to build one, but essentially it is extending the FboSource class of ofxPiMapper and overriding the setup(), update() and draw() functions.
In the setup() function you should set a name for your custom source.
name = "Name Your Source";
Then you should set the dimensions of your source by using the allocate() function.
allocate(500, 500);
In the draw() of your custom FboSource you should decide whether you want the previous frame to be cleared from the gfx buffer or not. If you want to draw a fresh frame, use the ofClear() function.
ofClear(0); // Clear with black