Script for stretching texture with saving size and quality of borders.
It’s usefull for frames and shadows.

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Theory

Imagine, you need to create nice looking shadows for plane. You are just create a texture faking shadows effect. If you know size in advance — all is ok. But what to do if you are creating some customizable effect? You can’t know what size the rectangle will have. 9 part texture rescue you!

1. Lets start from painting square texture of shadow effect.

2. Understand how to slice it.

Center is too big. Actually it can be 1x1 pixel. I leave this non optimal version for clarity.

3. How it sctreched?

Simple one rectangle take this result:

If we are applied “9 part” concept, we can get this:

We just change size only three parts. It’s central row.

This way you can create glow, shadow and frame effects, etc:

Practice

I wrote the script for provide solution “9 part texture” in vizrt.How to use it:

  1. Drop script to some container
  2. Click “Create base planes” for creating nine sub-containers.
  3. Drop texture to all nine sub-conaitners.
  4. Set “Source of size”, position…
  5. Set “Border” parameter correspondently to texture style:

There is issue when central row or column is too small. This is texture filtering. The issue can be solved by setup maximum Anisotropic Filter on all nine textures:

Try it yourself

I’ve prepared some textures for you ;)

I use white color for easy changing color in vizrt. Just add a material ;) If you want black color on a shadows, add black material on the master container:

Glow/shadow





Frames




Download 9partTextureExample.via and try it yourself.

Source code

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