Mastering
Bump Maps
for
Curious Labs Poser® and Corel Bryce®
Part 3
It is always easier to have the UV map as reference when painting the bump map. This is difficult to do without destroying it when you paint over it. It is best to first create a separate layer with the UV map and then paint onto the underlying image, always keeping the UV map intact.
Here's how to do it: (Remember this is Corel Photopaint specific but this method can be adapted for Adobe Photoshop users as layers are supported in Photoshop.)
1. Use the Magic Wand mask tool - with a tolerance of 0 and anti-aliasing off - and click on the white background colour.
All the area
within the templates will be masked. (I use the Mask Overlay tool 
to
show the masked area in the default pink tone.)
2. Use the Colour Mask (Mask...Color Mask) tool to add the white areas between the UV grids to the existing mask. With the Color Mask requestor open, select the Eyedropper Pick tool and click on one of the white areas between the black lines of the template. Then ensure the Smooth setting is 0. Select OK to add to the mask.
The final effect should look something like this....
3. Then with
everything except the black and red lines
masked, reverse the mask using the Invert Mask Tool 
.An
an object consisting of the black and red grid lines will be masked.
4. Finally use the Copy menu item (Ctrl-C) and a Paste as New Object menu item (Ctrl-V) to add the grid as an object on top of the background. Open up the Object docker to see if your Copy...Paste operation worked.
Here is what you have
done if it was possible to see it in 3-D.
Open the Object Docker
(on the right margin of the Corel PhotoPaint window) and ensure that the
"Background" item is highlighted (in red)
and not the grid Object itself, otherwise any painting that
you do will be done on the grid object and NOT on the background as you
want.
The basic groundwork for all your work in now laid. I would suggest that you Save this file, just in case you want to return to it...
This concludes the 3rd part of this tutorial. Are you ready for the next part?
[Return to the beginning] [Next part]