All Questions
13
questions
3
votes
1
answer
1k
views
How do I efficiently calculate the distance to the edge of a shape?
I'm trying to implement something like an "inner glow".
That is, I have an image which defines the shape of an object, and then
I want to create overlay that is a gradient that goes from the ...
- 131
0
votes
1
answer
577
views
What method is used for baking grayscale curvature maps
I'm looking for a way to generate curvature maps like this:
The map stores the Convexity and Concavity of each pixel as a value from 0 to 1, where .5 is no curvature and 1 and 0 are the extremes.
I ...
- 101
1
vote
0
answers
47
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 ...
- 11
1
vote
0
answers
63
views
Anti aliasing thin features in textures
Assume I have a texture with a repeating line pattern. The lines are exactly 2 texels wide (really thin). Ans very spaced out (50 texels in between each line).
I am now struggling with the ...
- 1,736
1
vote
1
answer
53
views
Make a texture a clickable Button
What would be the best way to make a texture a clickable button? Suppose I have a Room (respresented by a 2D texture), where there are buttons.
Would I in the main loop:
check when the mouse is ...
- 113
2
votes
0
answers
120
views
Cem Yuksel's "Mesh colors" implementation/demo?
Are you aware of any sample implementation or demo application of Cem Yuksel's "Mesh Colors" or "Mesh Color Textures" (http://www.cemyuksel.com/research/meshcolors/) ?
The author does not provide any ...
- 121
2
votes
0
answers
124
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 ...
- 81
3
votes
0
answers
95
views
Slope Based Texturing
On the main page for Allegorithmic's Bitmap2Material, it mentions that the software uses a Slope Based approach over a Luminance Based approach. What exactly does this mean?
- 577
6
votes
1
answer
2k
views
Seamless Textures
I understand how an artist would make seamless textures by hand, but how can a computer program automate that process? Software like PixPlant is capable of doing this, but I don't understand how it ...
- 577
4
votes
0
answers
188
views
Generate complex (non-convex) polyhedron UV mapping
I need to find an approach to the problem of generating texture maps for non-convex polyhedrons without using a design tool like Maya. Specifically, I am mapping simulation results data onto a 3D ...
- 153
9
votes
1
answer
345
views
Perturbed image texture implementation from renderman language
I am trying to implement (in C#) an image perturbation algorithm presented in the book "Texturing and modeling - K. Perlin et al" (page 91 if anyone has it), which distorts an image.
The following ...
- 91
17
votes
2
answers
7k
views
How is anisotropic filtering typically implemented in modern GPUs?
Anisotropic filtering "retains the sharpness of a texture normally lost by MIP map texture's attempts to avoid aliasing". The Wikipedia article gives hints about how it can be implemented ("probe the ...
- 1,861
8
votes
3
answers
312
views
Changing image so it would look like through colorful glasses
I am currently working on some simple pixel shader in HLSL. I send to shader texture and I want to make it more colorful (something like in the picture below).
In the picture 1 there is original ...
- 399