ZBrushCentral

Problems!

-can’t increase the scale very much(during retopologing) -difficult to adjust the symmetry(“preview”-is a very small window)
-sometimes the button “reconstruct subdivision” doesn’t work, without telling any reason like existing of triangles or other
-“projection” sometimes deformate the object too and work unpredictably
-during retopologing dots snap to the middle of the object, maybe resolution is too small or something else wrong…
Help me please!

First: Laundry list posts almost never get much response. You overwhelm the people who would like to help you. Or you scare off people who know the answers to only one or two of the questions.

Second: Please provide examples and an explanation of your steps when you are encountering unusual situations. The more info that you can provide to help people understand what you’re doing and what you’re trying to do, the better your response will be.

Regarding Reconstruction: You will never get a message telling you why reconstruction isn’t possible. It’s either possible or it’s not. If it’s not, it’s always for the same reason: there is no lower level mesh that if divided would result in the current subdivision level. Triangles are one cause, but polygon structure is another.

For example: If you have a mesh that’s a square of two polys by two polys it could be derived from a single polygon. Reconstruction is possible. But what if you had a row of three polygons with another attached to just one of them? (Such as a squat T shape.) Still four polygons, but there’s no single polygon that could be subdivided to create that shape. Reconstruction is therefore not possible.

-can’t increase the scale very much(during retopologing) -difficult to adjust the symmetry(“preview”-is a very small window)

Hide everything but what you’re trying to retopo…then you can zoom in to what you’re trying to work on.


-sometimes the button “reconstruct subdivision” doesn’t work, without telling any reason like existing of triangles or other

if you don’t have “enable UV’s” turned on reconstruction will not work.
tool>texture>enableUV’s


-“projection” sometimes deformate the object too and work unpredictably

projection in any form can only do so much. You’re basically telling the computer to match one object to another when they are different. In areas like the mouth, eyes, ears, etc. The computer looks at your normals and the normals of the object you are trying to project to. It then says, vertex A should be near or similar to vertex B. But when there are 12 different vertexes near one another your computer just picks one (it has reasons for why). Some times this isn’t the “correct” vertex that you would expect, but is that really the computers fault?


during retopologing dots snap to the middle of the object, maybe resolution is too small or something else wrong…
Help me please!

when you retopo, every zsphere is based off the root sphere. When you want to retopo, ALWAYS double click off the model first. That tells zbrush not to build from the root sphere. It’s just the way zspheres work. You should always check your work often (hit “A” for preview). Zspheres don’t always snap to what you think they should (again, asking the computer to do your work for you) I will check after making a row of quads, or when just working in upclose areas. The more often you check your work, the less you will lose if you miss a snap, or have that “center creation” sphere.

Aurick is right about the problems…you should always break them up into little bits that people can handle. I’m just procrastinating or else I would have just read your post then skipped right on to the next one that only takes 2 sentences to answer.

Thank you very much.
-reconstruction:
when I was making an adaptive skin I press subdivision level=4(max) , I could choose ievei=1, but I didn’t because in this case I’ll lost all my details,so that the model could be reconstructed but it wasn’t .Finally how could I have a retopologized model with low poly level and high poly level(with details) ?

-Projection works unpredictibly= in the same situations it gives different results
for example two ears, one good and one deformated.
-snapping dots=dots snap to the line between two simmetrical halfs