Semi-automatic retopology tool : prototype 3

Jeacom · July 22, 2019, 9:18pm

I was trying to get better framerate but got a glitch hand spaceship instead.

Jeacom · July 25, 2019, 9:20pm

New prototype, now it is slightly faster as I used numpy on every piece of code I could, so much in fact that I am having problems to read it

Also, I need a name for this tool, maybe I’ll keep it as SoftWrap although I think its not very original, I also like SoftCast or Topotransfer, any suggestions?

dan2 · July 25, 2019, 11:02pm

Nice update! Looks pretty snappy.

How about TopoCast/MeshCast or TopoMorph? Topo/Meshcast would imply that there are probably 2 meshes involved. I like wrap, it’s pretty descriptive but may confuse some folks coming from other packages where it’s used for mesh/surface deformers not just shrinkwrap.

Safetyman · July 25, 2019, 11:21pm

Can you use it with vertex/weight groups? So that only a part of the target mesh conforms instead of the whole thing? Sort of like how the Shrinkwrap modifier works with vert groups.

Jeacom · July 25, 2019, 11:51pm

I also like wrap, but I am not sure if it will look too similar to Wrap 3 as I don’t want people to think its meant to compete with it, MeshCast might be a good alternative though.

yes, its doable, but before that I think I it some sort of auto-sizing in order to make the mesh conform properly with so little information.

loveordie · July 26, 2019, 12:11am

It is magic!

Woolfy13 · July 26, 2019, 12:56am

Wow it looks amazing!!! My suggestion MeshWraper or SnapMesh or MeshSnapper

genics · July 26, 2019, 1:13am

this tool look like a cloth resolving~

pacermike · July 26, 2019, 1:19am

I’d call it TopoGlove, heh

Actually looks like it could get a second job doing skin sliding effects!

Really cool work! This is awesome!

Jeacom · July 27, 2019, 3:14pm

Pin support is back

Tonatiuh · July 28, 2019, 4:00pm

For alignment you can use this add-on: https://github.com/patmo141/object_alignment
@cogitas3d use it in his OrtogOnBlender he also has nice photogrametry options, so I think he will be very interesting in this retopo workflow.

Jeacom · July 28, 2019, 4:14pm

I was planing to add some sort of pre-alignment but it turns out the snapping does a pretty good job when mixed with a massive feedback loop.

I think the biggest problem i have now is get both models to scale, depending on the models, proportions may vary on different parts and mess up all the snapping.

Tonatiuh · July 28, 2019, 4:21pm

I think you should talk to cicero, he has some tools that just do that on OrtogOnBlender, or chek out the code: https://github.com/cogitas3d/OrtogOnBlender

alinhaobjetos:

github.com

cogitas3d/OrtogOnBlender/blob/master/AlinhaObjetos.py

import bpy
import math

# MENSAGENS

class MessageSelecioneObjAlinhar(bpy.types.Operator):
    bl_idname = "object.dialog_operator_selecione_alinhar"
    bl_label = "Please, select the object to be aligned!"
  
    def execute(self, context):
        message = ("Please, select an object before!")
        self.report({'INFO'}, message)
        return {'FINISHED'}

    def invoke(self, context, event):
        wm = context.window_manager
        return wm.invoke_props_dialog(self)

bpy.utils.register_class(MessageSelecioneObjAlinhar)

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AlinhaRedimensiona:

github.com

cogitas3d/OrtogOnBlender/blob/master/AlinhaRedimensiona.py

import bpy
import math
import fnmatch

# MENSAGENS

class MessageSelecioneObj(bpy.types.Operator):
    bl_idname = "object.dialog_operator_selecione"
    bl_label = "Please, select an object before!"
  
    def execute(self, context):
        message = ("Please, select an object before!")
        self.report({'INFO'}, message)
        return {'FINISHED'}

    def invoke(self, context, event):
        wm = context.window_manager
        return wm.invoke_props_dialog(self)

bpy.utils.register_class(MessageSelecioneObj)

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Jeacom · July 28, 2019, 4:28pm

well, those seem to be stiff alignments, I think it will only work if models are very similar, which is not the case for topology transfer (different poses).

I’ll need to find a way to scale different parts (edges) of the model on the fly during snapping.

Tonatiuh · July 28, 2019, 4:39pm

You are probably right but for a first aproximation maybe?

anyhow! I hope you solve all issues! we really need something like this in blender.

Jeacom · July 29, 2019, 7:33pm

Improved pins robustness and added X-Mirror support but its still too slow for my sake, but at least it works sorta like intended.

dan2 · July 29, 2019, 7:39pm

compared to wrap which can easily take 10 minutes even with 1 iteration it seems pretty fast to me

ambi · July 29, 2019, 7:46pm

I wonder how this does with different types of human models. Can you pick a basemesh and project it into a complex mesh like something from MB lab?

Jeacom · July 29, 2019, 7:49pm

the target mesh doesn’t have much performance impact, I tested the same sculpt with 500k and 10k and didn’t notice any difference. But the source mesh is another history, it works fine up to 2.5k but above it starts getting very laggy.

It works well when projecting a simpler mesh onto a denser one but not when projecting a dense into a dense mesh.

Cire · July 29, 2019, 7:55pm

Looking better and better. Keep up the good work!