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| author | Thomas White <taw@bitwiz.org.uk> | 2009-12-16 10:38:31 -0800 |
|---|---|---|
| committer | Thomas White <taw@bitwiz.org.uk> | 2009-12-16 10:41:25 -0800 |
| commit | bd8032bb42df52c7c2c33b76bf8904db714cf395 (patch) | |
| tree | fbe5f3e6d481e4da47d354511c81a9e4e0908849 | |
| parent | d84fd5ff386a1393bbec3b67c8f165c95613a53e (diff) | |
Clamp negative values to zero when displaying
| -rw-r--r-- | src/render.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/src/render.c b/src/render.c index bf6c0256..ba76b9e6 100644 --- a/src/render.c +++ b/src/render.c @@ -34,6 +34,7 @@ \ r = 0; g = 0; b = 0; \ \ + if ( p < 0.0 ) p = 0.0; \ switch ( s ) { \ case 0 : { /* Black to blue */ \ r = 0; g = 0; b = p*255; \ @@ -72,6 +73,7 @@ #define RENDER_MONO \ float p; \ p = (float)val / (float)max; \ + if ( p < 0.0 ) p = 0.0; \ r = 255.0*p; g = 255.0*p; b = 255.0*p; /* NB This function is shared between render_get_image() and |