russhughes / ttgo-hershey-fonts Goto Github PK

Is it possible to rotate the screen orientation ?

Sorry for raising this as an issue but I am interested in your code and have a few comments and queries.

My experience is with bitmapped fonts rather than vectors, but I assumed that a primary benefit of vector fonts was that they are scalable at runtime. As far as I can see your code renders them at a fixed size. Why is this?

Secondly, how do you get from a published Hershey font file to a Python font? There doesn't seem to be a vector equivalent to my font-to-py utility.

Looking at your video, I'm impressed at the speed of rendering from files. I found rendering bitmapped file fonts too slow for anything except ePaper displays, and stopped using binary font files as a consequence. I guess the performance is a mark of the efficiency of vector formats. I find font files frozen as bytecode are extraordinarily RAM-efficient. However with the speed you're getting, files save the hassle of freezing code. With solutions to the two queries above, vector fonts look very interesting.

A final thought. I have a set of display drivers published as part of nano-gui. These support a variety of display controllers. While they can be used with nano-gui and micro-gui, they can also be used stand-alone. All offer a class subclassed from framebuf.FrameBuffer, and therefore inherit basic graphics primitives. Hopefully sufficient for rendering vectors. If you provided a way to render your fonts to a FrameBuffer instance you would achieve automatic compatibility with a range of graphics hardware including OLED, ePaper, Sharp and TFT. Also including the TTGO which could be used for testing. Just a thought...