[magick-users] Retain perspective transformation matrix?

[Anthony Thyssen]

On Fri, 7 Nov 2008 16:41:36 -0800
Fred Weinhaus <fmw at alink.net> wrote:

| For example, 2-point affine (fallback from perspective!)
| 
|     convert rose: -virtual-pixel black -set option:distort:verbose 1 \
|             -distort perspective '0,0,10,5 0,45,5,20'  x:
| 
| Outputs to STDERR
| 
|     Affine Reverse Map
|       -fx 'xx=+2.700000*i +0.900000*j -31.500000;
|            yy=-0.900000*i +2.700000*j -4.500000; p{xx,yy}'
|     Affine Forward Map
|       -distort AffineProjection \
|           '0.333333,0.111111,-0.111111,0.333333,10,5'
| 
The -set option:distort:verbose 1 was an old technique that was used before I figured out to access the normal   -verbose   setting.

Use   -verbose    instead of     -set option:distort:verbose 1

-- 
  Anthony Thyssen ( System Programmer )    <A.Thyssen at griffith.edu.au>
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   At a video game, any kid could be in command, could make life and death
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                              -- Dean Alan Foster, ``The Last Starfighter''
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     Anthony's Home is his Castle     http://www.cit.gu.edu.au/~anthony/