"uncover" transition

Hi,

What board are you using ? Are you starting a project from one of the Application Template in TouchGFX Designer ? If yes then you might need to enable the "animation storage". This is needed in order to do slide transitions or complex animations.

To enable it you need to allocate some memory for the animation storage in the function setFrameBufferStartAddresses() in the function TouchGFXHAL::initialize() in TouchGFXHAL.cpp in the folder TouchGFX/target of your project.

If you are using the two frame buffer strategy your function should look something like this:

void TouchGFXHAL::initialize()
{
 TouchGFXGeneratedHAL::initialize();
 
 setFrameBufferStartAddresses((void*)framebufferStartAddress, (void*)framebufferStartAddress + sizeFramebuffer, (void*) framebufferStartAddress + sizeFramebuffer *2 ; 
 
 instrumentation.init();
 setMCUInstrumentation(&instrumentation);
 enableMCULoadCalculation(true);
}

The memory allocated for the animation storage should be the same as a framebuffer (so for example for a display of 480 by 272 with 16bbp: 480 * 272 * 2 = 3FC00). This is not enabled by default for all boards as it requires enough RAM.

/Romain

I am starting with the application template, but, like most users, my project will be very close to the disco board (the disco boards are 'reference designs'), so I will be converting the AT project into a 'from scratch' project. (this process is terrible BTW, which I mentioned in the webinar session)

My animation storage is configured, the slide transitions work.

What I want is to develop a new transition type: "uncover". On a cover transition the new screen image slides in "on top of" the previous one. When I am done with that screen I want it to transition as if it is "sliding back out" revealing the original screen that was "under it".

I'm not sure I am describing it properly. I have looked at the transition logic, but I'm not sure I understand its inner workings yet. Any code I develop would be overwritten by code generation?

Thanks,

Bob