Advancing Displace and Solidify modifiers to handle overlaps #43109

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Jaggz H · 2015-01-03T07:46:44+01:00

Jaggz H commented

2015-01-03 07:46:44 +01:00

I briefly discussed this with C. Barton. I often I solidify and displace surfaces in the processes I work on -- recently for 3d printing custom assistance devices including molds for casting rubber, customized computer peripherals, etc. Whether or not they use clear-cut geometric forms, or are of organic nature, they often succumb to the issue of intersections with displace/solidify. I've wanted to work out some details on processes which would enhance these modifiers, but need some help. I'd attempt to implement it so it would be inactive normally, and use thresholds when enabled, so as not to slow down the normal modifier functionality, and a require a minimum processing when the features are used.

The main issue I'm having is that the modifiers do not presently have access to information on adjacent vertices, and my first approach to an algorithm would examine, with some function fn(vertex_normal, displacement_amount), if there would be a crossing (e.g. if faces would intersect). Then the simplest method would angle the normals away from each other. However, this does all require the ability to examine adjacency, and I'm relatively inexperienced in blender internals, having only contributed minor bits to sculpting tools and physics code. Your guidance would be appreciated.

I briefly discussed this with C. Barton. I often I solidify and displace surfaces in the processes I work on -- recently for 3d printing custom assistance devices including molds for casting rubber, customized computer peripherals, etc. Whether or not they use clear-cut geometric forms, or are of organic nature, they often succumb to the issue of intersections with displace/solidify. I've wanted to work out some details on processes which would enhance these modifiers, but need some help. I'd attempt to implement it so it would be inactive normally, and use thresholds when enabled, so as not to slow down the normal modifier functionality, and a require a minimum processing when the features are used. The main issue I'm having is that the modifiers do not presently have access to information on adjacent vertices, and my first approach to an algorithm would examine, with some function fn(vertex_normal, displacement_amount), if there would be a crossing (e.g. if faces would intersect). Then the simplest method would angle the normals away from each other. However, this does all require the ability to examine adjacency, and I'm relatively inexperienced in blender internals, having only contributed minor bits to sculpting tools and physics code. Your guidance would be appreciated.

Jaggz H commented

2015-01-03 07:46:44 +01:00

Changed status to: 'Open'

Jaggz H commented

2015-01-03 07:46:44 +01:00

Added subscriber: @jaggz

Aaron Carlisle commented

2015-01-04 00:21:58 +01:00

Added subscriber: @Blendify

Julian Eisel commented

2015-01-04 00:32:42 +01:00

Added subscriber: @JulianEisel

Henrik D. commented

2020-01-11 10:47:43 +01:00

Added subscriber: @HDMaster84

Henrik D. commented

2020-01-11 15:08:39 +01:00

I have written temporary python code to try that, when I made the new Solidify Complex mode. I plan on implementing intersection handling into solidify eventually like I did it in my python script test code. Try to write everything in python with bmesh at first, before you dive into modifiers, it makes work a lot easier to know what works first. You can take a look at my naive approach at https://github.com/redweasel/manifold-solidify

Also in Solidify Complex Mode there is the adjacent vertices information buildin.

I have written temporary python code to try that, when I made the new Solidify Complex mode. I plan on implementing intersection handling into solidify eventually like I did it in my python script test code. Try to write everything in python with bmesh at first, before you dive into modifiers, it makes work a lot easier to know what works first. You can take a look at my naive approach at https://github.com/redweasel/manifold-solidify Also in Solidify Complex Mode there is the adjacent vertices information buildin.

Philipp Oeser removed the

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Advancing Displace and Solidify modifiers to handle overlaps #43109