AWARE SYSTEMS
TIFF and LibTiff Mail List Archive

Thread

2001.02.20 16:08 "need help", by Chakravarthy Terlapu
2001.02.20 17:19 "Re: need help", by Leonard Rosenthol
2001.03.02 15:12 "doubt", by Chakravarthy Terlapu
2001.03.05 20:54 "erasing pixels within a box using TIFF library", by Chakravarthy Terlapu
2001.03.06 20:47 "Re: erasing pixels within a box using TIFF library", by Chris 'Xenon' Hanson

2001.03.06 20:47 "Re: erasing pixels within a box using TIFF library", by Chris 'Xenon' Hanson

I am writing a program to erase pixels from a tiff image using TIFF library. I am using the point in a polygon test to check whether each pixel lies inside the polygon or not. I am having the problem at setting the pixels inside the polygon to white.

Can't comment on the tiff-related parts, but that is about the least efficient way to rasterize a filled polygon.

Not sure if the efficiency part matters to you, but if you're going to be doing this en-masse, with a lot of files and polygons, you should look into more efficient scan/fill techniques.

Chris - Xenon--

  Chris Hanson | Xenon@3DNature.com | I've got friends in low latitudes!
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