[magick-users] GetFillColor and extract_info

[Anthony Thyssen]

"Rick Mabry" on  wrote...
| > Setting a tile pattern in this way just does not seem effect the offset
| > of the pattern.
| 
| It can, but it didn't work the way I expected. The following show some 
| effects that give enough of a clue how it works:
| 
| convert -size 640x480 xc:blue -tile logo:[640x480+100+100] \
| 	-draw "polygon 20,20 619,20 619,459 20,459" drawtest.png
| 
| Then try the same with -100-100 in place of +100+100.
| Both give something different than an offset-less tile.
| 
Ok in summery...

A tile offset requires you to actually know the size of the image being
tiled.

In other words the tile is saved in memory in a 'rolled' state, and
not as a simplier 'tile offset' or even a 'virtual canvas offset'.

Arrrggghhhh....

| In any case, in PerlMagick I can do a RollImage prior to the DrawImage but it 
| is still not the best way, since it makes no sense to have to move pixels 
| around  in the $tile image. A drawing offset is just right, very efficient. 
| 

How do you specify a tile in the MVG draw argument?

That is, inside the -draw instead of globally.  I believe a tiling
offset is actually part of the SVG description, so there should be a
way.

Then again I hope tiling is effected by -draw affine canvas 'warpping'


  Anthony Thyssen ( System Programmer )    <A.Thyssen at griffith.edu.au>
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