In 1973, Techtronix introduced one of the first low cost (still thousands of $) graphics terminals. It used a charged plate technology that held whatever image was drawn on it until it was erased without the need for RAM to refresh it.
In 1976, they integrated a 6800 CPU and BASIC so you could perform processing locally.
This may have been the first Extended BASIC on an 8 bit machine.
The BASIC had extensive graphics support and seemed to be pretty fast in spite of the 1MHz clock speed.
It may have influenced Extended BASICs on personal computers.
I'm guessing the BASIC originated on mini-computers or mainframes.
The 6800 was replaced with faster CPUs in later models, but if you look at some of the videos on youtube, you will see a few things that look like computer animations that appeared in movies. I'm not sure if they used stop frame animation taken from one of these or a different system, but it's kinda cool to see in action.
This is from an older terminal, but you can see what these systems were capable of.
Just so you can see how trailing edge these graphics actually were... but these were much more expensive systems: