Questions tagged [uv-mapping]
The uv-mapping tag has no usage guidance.
16
questions with no upvoted or accepted answers
6
votes
0answers
531 views
Perspective-Correct Texture Mapping
I am working on a small rendering engine for a personal project and I am having issues with the texture mapping part of it.
It seems to work for some cases, but not for others. For example, when one ...
2
votes
0answers
43 views
Per-object screen space uv issue
I am currently trying to sample a texture in screen space. This works well :
...
2
votes
0answers
179 views
Triplanar UV unwrapping - overlapping triangles
For some time I have been working on UV unwrapper for radiosity computation. The information online about it is very sparse, except how to do it in some high end software. So far I have used triplanar ...
2
votes
0answers
112 views
Algorithm for 3D mesh model segmentation to chart
I'm trying to implement a segmentation model which will divide a 3d mesh model into charts. But I'm having really hard time to find resources in the web. The papers and some other places these ...
2
votes
1answer
361 views
Algorithm to map a triangular mesh onto plane preserving angles and distances from one vertex
I have a 3D triangular mesh representing cortical surface of a brain. I also have one vertex of interest. I would like to unfold a neighborhood of this vertex in such a way that both the angles (their ...
1
vote
0answers
20 views
What algorithms are needed to map displacement to base mesh?
By given belows,
Base mesh(vertices, faces, texture coordinates - UV map),
Normal map(1024x1024 image),
Displacement map(1024x1024 image),
I want to make a mesh which reflects the displacement map. ...
1
vote
0answers
427 views
UV mapping on triangles
After watching some Youtube tutorials I thought I had understood the concept of UV mapping:
I have a net of triangles, and I have an image representing my texture.
Now I tell the GPU which point of ...
1
vote
0answers
38 views
How can I detect if an edge has flipped during the UV unfold process?
I'm writing my own UV Unfold operation (similar to Maya's Optimize UV tool or 3DS Max's Relax Tool). My code works great 90% of the time but in some instances, I'm getting faces and edges that flip ...
1
vote
1answer
104 views
Export Model Textures Per Face
(Note that as far as attempts go, I can't find anything that helps me)
I have a 3D polygon, and for simplicity's sake it's going to be the one below:
It is textured using the UV map below:
Side ...
1
vote
0answers
60 views
Handling varying texture sizes in an array texture
Say we've idetified that we have a varying number of textures that are upper capped by 2 parametrs. thus we allocate the maximum amount of memory needed to store all textures as follows:
...
1
vote
0answers
121 views
Model UVs optimization
This is related to question on SO (but the purpose of this question is different).
I have model with UVs (3DS max UVW editor screenshot)
I have grouped some unused parts of UVs on the top right ...
0
votes
0answers
13 views
How to get the surface alignment
How can I get the surface alignment of a 3D object in screen space? I found this example which, I believe, is aligning the UV coordinates to the 3D vectors (which are determined by their current ...
0
votes
0answers
34 views
Character Creation. Cartoon look, Eyes and Extra Parts. What advantages are the combining to one mesh?
I am fairly new to CG and 3d art. I'm trying to learn to make good game assets (ie. Low poly count, clean looking) in a cartoon style.
I'm making this character as pictured. But his eye is a separate ...
0
votes
0answers
47 views
UV coordinates calculation broken
I've tried using the classic formula of calculating barycentric coordinates.
When the plane on which you are projecting the texture is collinear to any of the base vectors it crashes with a division ...
0
votes
0answers
61 views
Compute UV Normals and World Position from a given texture coordinate
I'm turning to you as a newbie in CG, with a question that might easily be answerable for pros.
What I need to do is the following: I have a (rather simple) quad mesh in a 3D modelling software, say, ...
0
votes
0answers
38 views
How to "preserve texture" when transforming vertices
Maya has a feature called preserve texture. It allows you to transform vertices of an object and basically have the texture "stay in place" in object space. Say I have a plane with unwrapped ...
