home
***
CD-ROM
|
disk
|
FTP
|
other
***
search
/
Turnbull China Bikeride
/
Turnbull China Bikeride - Disc 1.iso
/
ARGONET
/
PD
/
GRAPHICS
/
IMAGE_1-.SPK
/
!Image
/
Docs
/
P19
< prev
next >
Wrap
Text File
|
1994-08-13
|
2KB
|
48 lines
Warping Images
--------------
Image allows the user to warp any quadrilateral area of an image onto any
other quadrilateral area. This allows you to distort areas of an image or copy
areas whilst also resizing the copied area, rotating it or distorting it.
When you select the 'Warp Image' icon on the main control panel, you will be
presented with a warp control window, and the display window will also
contain two squares drawn over the display image.
The two squares allow you to define the source and destination
quadrilaterals by allowing you to drag the four corners of to any position
you like. The quadrilateral whose four corners are marked with solid squares
define the destination quadrilateral, whereas the one with the outline
squares are the corners defines the source quadrilateral.
Once you have defined the source and destination areas select the 'Warp' icon
on the 'Warp Image' control window and the warp will take place.
There are no restrictions on the source and destination areas, you can even
make the sides of the defining quadrilateral cross, which will produce a
twisted output.
Options
-------
There are two selectable options available within a warp operation :
Preserve - Normally masking information is ignored during a warp,
selecting this option will cause masked areas NOT to
overwritten in the warping process. That is any areas
within the destination quadrilateral which are masked
out will remain untouched.
Blank - Normally all the areas outside the destination
quadrilateral will remain untouched during the warp
process. Selecting this option will make those areas
outside the destination area be masked out in the output
image.