| Re: Poscript Component Selection [message #45523 is a reply to message #45519] |
Mon, 12 September 2005 15:41   |
Michael Wallace
Messages: 409
Registered: December 2003
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Senior Member |
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Your code will always produce PS images that look like JPEGs (i.e.
pixelated) rather than vectors. Let's look at some of the important
lines of your code.
Here, you're grabbing the image on the current window. The variable
data is simply a 2-dimensional array of the pixels in the window. What
you have are pixels of the image, not the individual components of the
image.
> oImage = sState.oWindow->Read()
> oImage->GetProperty,DATA=data
Setting im3d to data...
> im3d=data
Setting the output to PS...
> SET_PLOT, 'ps'
Now you're drawing the image pixels to the PostScript file. Because you
only have pixels at this point, that's all that's going to appear in the
file.
> TVSCL, im3d, TRUE=1
Closing out the PS...
> DEVICE, /CLOSE
So, what do you do about all of this? If you can get your hands on the
view object before it is drawn, you can use the IDLgrClipboard::Draw
method where you pass in the IDLgrView and specify to use VECTOR = 1 and
POSTSCRIPT = 1.
-Mike
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