#19781 [Opn->Fbk]: ImageTrueColorToPalette() ignores color parameter
ID: 19781
Updated by: rasmus@php.net
Reported By: sprice@wisc.edu
-Status: Open
+Status: Feedback
Bug Type: GD related
Operating System: Darwin 6.1 (Mac 10.2.1)
PHP Version: 4CVS-2002-10-06
New Comment:
Is world_map_med.gd2 a truecolor image? This function does nothing if
the image has a palette.
Previous Comments:
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[2002-10-06 12:18:35] sprice@wisc.edu
imagetruecolortopalette() is:
void imagetruecolortopalette ( resource image, bool dither, int
ncolors)
but the function seems to ignore my ncolors input. ncolors should be
the maximum number of colors in the output image. (and I cannot tell if
dither works)
Test script:
<?php
header( "Content-type: image/png" );
$medimg = $_SERVER['DOCUMENT_ROOT'] .
"/riverdata/images/world_map_med.gd2";
$img = ImageCreateFromGD2Part( $medimg, 900, 500, 800, 600 );
//Avoid bug #19418
$medimg = ImageCreateTrueColor( 800, 600 );
ImageCopy( $medimg, $img, 0, 0, 0, 0, 800, 600 );
ImageDestroy( $img );
$img = $medimg;
ImageTrueColorToPalette( $img, FALSE, 2 );
ImagePNG( $img );
ImageDestroy( $img );
?>
You can find the GD2 image that I am using here:
http://144.92.10.251/riverdata/images/world_map_med.gd2
The previous episode in this saga can be seen here:
http://bugs.php.net/bug.php?id=19704
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