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Bodmer / TFT_eFEX

A support library for TFT_eSPI that adds commonly used extra functions
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Bitmap Image Not Rendering #36

Closed tonyc770 closed 3 years ago

tonyc770 commented 3 years ago

I am using the TFT_eFEX library for a sprite rotation. The issue is that even though I can use the line fex.drawJpeg("/frame_00.jpg", 0 , 0, &spr); and this will render the sprite and I am able to rotate it (image quality is poor) however.

I tried to use a low color (2,4 and 8 bit) bmp of the same jpg image (converted) with this line of code fex.drawBmp("/frame_00.bmp", 0 , 0, &spr); But the image does not render on the TFT...

Suggestions? Thanks!

Bodmer commented 3 years ago

The rotation uses a simple rotation algorithm so this can prodice jagged pictures, the rotation function built into TFT_eSPI was not really intended for images as interpolation (super sampling) and smoothing (filtating) is required. I don't have the time available to implement this but it is on the todo list.

The rotation functions is for 16 bpp sprites only.