Re: Colour Gradients

["w robertson cairnwater co uk" <w robertson cairnwater co uk>]

Hi Steffen,

Thank you very much.

> Is there any problem with this approach? If you need specific shapes, have
you
> thought about masking a rectangular colour gradient created in GIMP
> with a "white" polygon?

This approach works but I think it has the drawback that it can't be
applied to existing shapes (for example we might want to use shapes from
the ChemEngineering sheet or custom shapes which do not have a background
specified in their shape file and set their background to a colour gradient
suitable for a particular diagram). I could be wrong in this though.

Bitmap colour gradients don't scale so well but hopefully that's not a big
drawback for most applications. I was also keen to try to stick to vector
graphics and try to minimise use of bitmaps if possible to keep the vector
graphic files as 'clean' as possible.

Will

Original Message:
-----------------
From: Steffen Macke sdteffen gmail com
Date: Fri, 6 Nov 2009 10:31:42 -0800
To: w robertson cairnwater co uk, dia-list gnome org
Subject: Re: Colour Gradients


Hi Will,

> The only work-around I've been able to find is to do the area of colour
> gradient as a bitmap in GNU Image Manipulation Program then use the bitmap
> in a Dia diagram. I've looked through the recent dia-list Archives but not

Is there any problem with this approach? If you need specific shapes, have
you
thought about masking a rectangular colour gradient created in GIMP
with a "white" polygon?

> I noticed that the "PC Video" shape on the "Cisco - Computer" sheet has a
> sort of colour gradient as part of it which seems ot work fairly well
> (although this gradient doesn't scale up so well).

It just contains many different subshapes with different shades of gray.

Steffen


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