Sullivan, Sean C - MLG writes:

> 
> Can anybody explain the meaning of the parameters
> a, b, c, d, e, f? 
> 
> How can I use them?

This is simple algebra
This is the transformation matrix:
 a  b  0
 c  d  0
 e  f  1 

If you have
 1  0  0
 0  1  0
 0  0  1
No transformation is done 

If you have
 1  0  0
 0  1  0
 e  f  1
You have a translation of e in x-direction
and f in y direction. 

If you have
 a  0  0
 0  d  0
 0  0  1
You scale the x-direction with a factor a
and the y-direction with a factor d 

If you have
 a  b  0
 c  d  0
 0  0  1
You have no translation, but a rotation
(and possibly you're scaling too). 

And so on...
This is all explained in the Pdf Reference Manual
or in your old HighSchool Algebra books ;-)

_______________________________________________
iText-questions mailing list
[EMAIL PROTECTED]
https://lists.sourceforge.net/lists/listinfo/itext-questions

Reply via email to