Getting lighting effects around an arch

Getting lighting effects around an arch - Printable Version

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Getting lighting effects around an arch - Darth_Sceptaurus - 09-03-2019

Hi all,

I am trying to get some highlights/shadows going on around this arch on my doorway, similar to what I have on the trim you see above. I am not finding any simple way to do it, and in fact with every way I have tried I've ended up running into roadblocks. Can anyone recommend the best, easiest, or most straightforward way to do this?

RE: Getting lighting effects around an arch - Blighty - 09-03-2019

I'm not quite sure what effect you are wanting, so I made a guess at this.
(Look at the layers in the xcf one at a time to see what each contains.)

RE: Getting lighting effects around an arch - rich2005 - 09-03-2019

(09-03-2019, 05:25 AM)Darth_Sceptaurus Wrote: Hi all,

I am trying to get some highlights/shadows going on around this arch on my doorway, similar to what I have on the trim you see above. I am not finding any simple way to do it, and in fact with every way I have tried I've ended up running into roadblocks. Can anyone recommend the best, easiest, or most straightforward way to do this?

I think you want something like this.

[attachment=3118]

The door frame bumpmapped. The frame is a little bit on the narrow side, could be wider. Simple? It is once you understand the fundamentals.
https://docs.gimp.org/2.10/en/gimp-filter-bump-map.html

Attached the ' bumped' frame and associated bump-map which was applied to the 'flat frame' The bumpmap determines the shape, could just be a simple rounded effect.

RE: Getting lighting effects around an arch - Darth_Sceptaurus - 09-04-2019

(09-03-2019, 07:21 AM)Blighty Wrote: I'm not quite sure what effect you are wanting, so I made a guess at this.
(Look at the layers in the xcf one at a time to see what each contains.)

Thanks for your reply. If you look at the red trim piece above, you can see how I was able to add shadow and highlights. I did this by using guide lines and the paint brush with a low opacity. The problem is I can't do this around an arch, so adding detail to this particular area is very difficult, especially if I were to try it free-hand. Does that make sense?

(09-03-2019, 08:06 AM)rich2005 Wrote:
(09-03-2019, 05:25 AM)Darth_Sceptaurus Wrote: Hi all,

I am trying to get some highlights/shadows going on around this arch on my doorway, similar to what I have on the trim you see above. I am not finding any simple way to do it, and in fact with every way I have tried I've ended up running into roadblocks. Can anyone recommend the best, easiest, or most straightforward way to do this?

I think you want something like this.

The door frame bumpmapped. The frame is a little bit on the narrow side, could be wider. Simple? It is once you understand the fundamentals.
https://docs.gimp.org/2.10/en/gimp-filter-bump-map.html

Attached the ' bumped' frame and associated bump-map which was applied to the 'flat frame' The bumpmap determines the shape, could just be a simple rounded effect.

Thanks for your reply! That actually looks pretty good, and if all else fails it may be a viable solution. The issue I'm having, as I explained to Blighty, is that adding these shadows and highlights are fairly easy using guidelines as I did on the trim piece you see above the door, however there's no way I know of to add a curved guideline, so I would have to try to do it free-hand, which wouldn't offer the precision I'd like. I want to make the texture around the door frame match the trim piece above as closely as possible.

RE: Getting lighting effects around an arch - rich2005 - 09-05-2019

Quote:...however there's no way I know of to add a curved guideline, so I would have to try to do it free-hand, which wouldn't offer the precision I'd like. ...

Maybe make a (visible) path, use it as a guide.