Is it possible to Export bitmap fade?

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turtle
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Is it possible to Export bitmap fade?

Post by turtle » Wed Oct 14, 2020 11:27 pm

Greetings all, I have some site drawings I am doing on top of bitmap satellite images.
I fade the bitmap so the drawing stands out.
However when I export to PDF the fade is lost.
And advice?
I can just fade the images before I import them to qcad.
Thanks
Comments based on Version: 3.23 unless otherwise noted.

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Husky
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Re: Is it possible to Export bitmap fade?

Post by Husky » Thu Oct 15, 2020 8:51 am

turtle wrote:
Wed Oct 14, 2020 11:27 pm
However when I export to PDF the fade is lost.
Nope - it isn't. Do you use a third party pdf creator?
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turtle
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Joined: Mon Jul 05, 2010 7:11 pm
Location: 43.9982926,-123.0633909

Re: Is it possible to Export bitmap fade?

Post by turtle » Tue Oct 20, 2020 12:30 am

Hi Husky thanks for your reply.
I am using the pdf export button on qcad 3.23
So your saying its not possible to export the fade?

I made a simple test drawing green.dxf using the canvas_green.png as a test bitmap.
I exported it as green50.pdf setting the bitmap to a 50% fade.
and exported as green.pdf with no fade.
They both look the same.
It appears bitmaps are stored separately from the dxf format.

I am a big fan of imagemagick and can use the command

Code: Select all

convert original.png -fill white -colorize 50% faded.png 
to set a 50% fade etc.
Attachments
green50.pdf
(12.81 KiB) Downloaded 14 times
green.pdf
(12.81 KiB) Downloaded 13 times
green.dxf
(165.24 KiB) Downloaded 11 times
canvas_green.png
canvas_green.png (351 Bytes) Viewed 125 times
Comments based on Version: 3.23 unless otherwise noted.

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Husky
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Re: Is it possible to Export bitmap fade?

Post by Husky » Tue Oct 20, 2020 5:45 am

turtle wrote:
Tue Oct 20, 2020 12:30 am
So your saying its not possible to export the fade?
No, I said it is no problem to fade an image in QCAD Pro and export it then as a pdf.

Husky-2020.10.19-03.png
Husky-2020.10.19-03.png (15.59 KiB) Viewed 113 times
green-mod.pdf
(18.53 KiB) Downloaded 15 times
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