Drawing into a pixmap using DrawLine etc.

BlitzMax Forums/BlitzMax Beginners Area/Drawing into a pixmap using DrawLine etc.

Daryl (Posted 2008) [#1]

Apologies if this has been covered before, I couldn't see anything by searching. Basically I'm pre-caching some drawing into a TPixmap (from a TImage) using Writepixel, which works a treat. However I'd like to use the standard drawing command to draw lines etc. in this image, is it possible? I'm thinking I might have to resort to doing my own line drawing algorithm but I'd rather not! Thanks Daryl.

Dreamora (Posted 2008) [#2]

no its not. you have to draw to the background and grab from there to get it into a pixmap

Daryl (Posted 2008) [#3]

Ah, that sounds like it may do it. Can I grab the background without flipping?

tonyg (Posted 2008) [#4]

Yep although it is simple to test.

Daryl (Posted 2008) [#5]

Thanks a lot, that worked a treat!

ImaginaryHuman (Posted 2008) [#6]

Write your own line drawing routine, it's not very hard, look in the code archives for the bresenham line-drawing routine.