I definitely like the sound of that. I thought that the high "build-up" of the clay brush was part of the design, but I would welcome access to a patch to fix a bug and create a mode that does more "filling in" than "building up". Could you post a link to the patch? I think the listserv eats attachments.
On Wed, Jun 22, 2011 at 8:23 AM, Jason Wilkins <[email protected]>wrote: > I ran into this while re-factoring sculpt. > > The clay tool in sculpt is supposed to obey the 'accumulate' flag. > This flag tells sculpt if it should base the brush location on the > original mesh before a stroke started (Accumulate Off) or use the new > position of the mesh that it gets during the stroke (Accumulate On). > Subjectively, accumulate 'off' looks like a brush has less and less > effect as you use it on the same spot without starting a new stroke, > sort of like how painting over the same area over and over doesn't > change the color as much. You can build up a sculpt in this mode if > you release and restart your stroke in the same spot, but not if you > just hold down the button and keep going over the same area. With > accumulate 'on' the sculpt will just build higher and higher without > releasing the button but it is harder to get a smooth result. > > An option like 'Accumulate' is needed because unlike adding or > blending a color, where it will eventually saturate to 1 or converge > (respectively), a sculpting displacement can be applied indefinitely > with continued effect. Setting accumulate to 'off' lets sculpting > simulate this saturation to some degree (could possibly be better), > but it isn't obvious that this is always what should be done, because > sculpting isn't painting. > > The bug is that clay is partially ignoring the Accumulate setting. > When Accumulate is 'off' the brush location is correctly placed on the > original mesh position, and the displacement vector is correctly > determined from the original surface, however the amount that the clay > brush raises the surface is computed from the new positions when it > should come from the original positions. The result is that even with > Accumulate 'off', the brush still looks kind of like Accumulate is > 'on', but because it is still using the original brush position and > normals it simply isn't doing the right thing. > > I would just fix this, but I am unsure because somebody may really > like how clay works now and by changing it to be 'correct' they will > feel that I broke it. However, I do think it should be fixed. The > old behavior can be mostly gotten back by turning 'Accumulate On' for > clay, and it will accumulate correctly instead of in the potentially > broken way it is now. The subjective strength of clay with > 'Accumulate Off' will seem weaker after this fix, but it will also be > possible to get much smoother results because it won't build up on top > of itself, allowing you to fill in gaps without applying too much > clay. > > I've attached a patch, if anybody would like to test the difference > just try un-patched and patched blender with accumulate turned on and > off for the clay tool and tell me what you think. > > _______________________________________________ > Bf-committers mailing list > [email protected] > http://lists.blender.org/mailman/listinfo/bf-committers > > _______________________________________________ Bf-committers mailing list [email protected] http://lists.blender.org/mailman/listinfo/bf-committers
