mosaic pattern ?

Support Materials and Textures
1

is there a simple way to make a background mosaic like in old roman fresco ?

see pic

or may be a script to do this mosaic thing?

[ATTACH=CONFIG]123099[/ATTACH]

i mean at worst i can make a 3D model then bake it to make a normal map and image with this may be !

thanks

2

Try using Voronoi / Col2 texture? There are no quick way to control the colors though.

3

ok good call

i was able to remove the color but even with ramp does not give any good 3D effect!
see pic

and with this is it possible to define sort of another text channel as a UV image with transparent background alpha=0

Thanks

4

[ATTACH=CONFIG]123137[/ATTACH]trying to see if i can bake one
see pic for initial model with double arrays

also did one with voronoi texture which gives a more ramdom size / location

and good nor value for the joints

thanks

5

let me give some more details here

i like to do like the old roman mosaic fresco painting

so this means that i like to paint or apply a picture on the mosaic’s faces but not on the joints
so the joints would be like a mask and then i can apply a pic over wihout changing the joints color
to give the same looks as in old roman fresco

anybody has an idea on how to do that effect ?

Thanks

6

It sounds like it might be easier if you did this with nodes. Use the Voronoi texture as an Alpha Over for the image and save the output as a new image texture.

7

can you upload a small sample file for this effect!

would this give some 3D effect for the voronoi lines ?

Thanks

8

Well the lies would be a separate texture over the image. You could just map them to Normal or Displacement to create a bump effect with them. The image would be a separate texture underneath it (you could set NOR or DISP to inverse also to make it look like the lines are indentations instead)

9

not certain how to set up this node with alpha
a sample file would show this effect if possible

Thanks

10

Couldn’t you just do that with projection?

I created a cube, then added a little edge to it. The inset is face mapped to ID #2.
Then add 2 array modifiers to the cube to create your grid of the fresco. In my example I only created a 16x9 grid.
Apply the two arrays so you have a single mesh.
Unwrap only the face #2 IDs.
Add two materials to the cube. Make one the edge color, the other is an image map with repeat turned off.
Add an empty to the scene and use it a projection controller for the image.
Place the empty above the mesh so it is projecting along the Z axis.
Scale the empty in the X/Y axis based upon the array count, in my case X-16, Y =9.

That technique can take care of getting the image across a grid and still maintaining a second material for grout control.

Attachments

fresco.jpg960×540 101 KB

25_fresco_project.blend (796 KB)

11

for a regular pattern it should work

but if you want a more or less regular pattern like you see in old roman tiles
well this won’t work well !
too regular

i should use 2.5

but let say that i have open it up with 2.49 and save it again for 2.49

what can i do to get the camera to work again in 2.49 ?

you forgot to pack the image with it ! LOL

now it looks like there is only one image as texture
or should there be 2 like one image for the black lines
and then the other color image ?

in the UV editor of i selet all faces i can see the inset faces alone
does this means that this is like using the alpha = 0 here or not ?

a little like a UV stencil !

Thanks