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Lets say I have an object and I want to render it in squarish wireframe in orthographic view. Here is what I mean - enter image description here

I am not looking for a specific topology in the 3d view, but what ever the topology of a model is, is it possible to render it in this way? I know that there are tricks to do this, for example by using chroma key, but as you can see in the image it is not acurate because it has picked up information from the original black background. Is there any way to do this in blender without the usage of chroma key?

Update - Basically, to render an object independent of its topology with a checkered wireframe

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2 Answers 2

up vote 3 down vote accepted

nodes
The Brick texture node makes the grid texture.
The settings to change in the Brick texture node are:

  • both Frequency fields, set to 1
  • brick width and Row height must match to get squares.
  • Mortar size to set how thick the lines are.

The Camera socket of the Texture Coordinates node, sets the mapping to match the camera. Thus the grid will be straight.
The Mix node is used to overlay the grid over any shader you already have on the object. It works from the Fac output from the brick texture. white = 1, and black = 0 so where ever there is black in the grid it will use the bottom shader, and whereever there is white (where the bricks would go) it will use the top input of the Mix shader. The brown Diffuse node would be the underlying shader.

Those nodes will render this:
render

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Nice! the camera option in the texture coordinate node didn't work for me...? any tips? –  GiantCowFilms Jul 26 at 16:34
    
Thanks, but I can have them both in full opacity, not mixing the values in between, right? –  Vladimir Jul 26 at 16:34
    
the "usefull question" button doesn't work as a non registered user and I'm having trouble with registration, but I'll fix it or check "best answer". Thanks for the answer. –  Vladimir Jul 26 at 16:38
    
@Vladimir the reason the up vote button wont work is because you do not have enough rep yet. You need 15 to up vote. –  David Jul 26 at 16:47
    
Just one thing - Does this requires a "uv project" modifier? –  Vladimir Jul 26 at 17:03

Yes(if I read your question correctly). In this case I'm overlaying a grid(checker texture) as such:

enter image description here

You can use a image of a grid texture instead of the checker texture.

Steps:

  1. Uv unwrap your mesh.
  2. Add a uv project modifier.
    enter image description here
  3. Set the projector to your camera.
    enter image description here
  4. Set the Uv map to your Uv map
  5. Set up a material such as this:

enter image description here

You can use any texture instead of the checker texture.

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Sorry, I'm a little new to blender. What is a "uv project modifier"? What do you mean by "projector" and how can I set it to the camera? And what do you mean with "Set the Uv map to your Uv map"? Basicly, I want to render an object with a checkered wireframe. Is that it? –  Vladimir Jul 26 at 16:29
    
Done, feel free to ask more questions! –  GiantCowFilms Jul 26 at 16:32
    
the "usefull question" button doesn't work as a non registered user and I'm having trouble with registration, but I'll fix it or check "best answer". Thanks for the answer. –  Vladimir Jul 26 at 16:38

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