How to i split a bitmap into parts? And use each part for a texture?

Questions & Answers
1

I am new!

I am creating a simple slider puzzle as a programming excersise.
I have successfully created 15 cubes at runtime and stacked them into a 4x4 on the XY plane.
I have a bitmap image 1024 by 1024 in my assets as a material whose scale is 1,1,1.
Each cube is 1,1,1 as well.
I want to paint the cooresponding part of the image onto each cube as they are instantiated in the camera’s startup routine.

Any Ideas?

Thanx!

2

You have to unwrap all fifteen cubes in maya and make it share the same texture!! that is the easiest!.. If u want to follow this search for unwraping in google u will get.

If you want to do it in unity u have set the UVs manually by using Material.textureOffset and Material.textureScale

3

For the sake of others who find this thread.

To divide a square image into 16 parts (4wide by 4high)
i did this:

using UnityEngine;
using System.Collections;

public class InitCube : MonoBehaviour {

public GameObject ga;
float wide; // tiles wide
float high; // tiles high

// Use this for initialization
void Start () {
    float x;
    float y;
    x = ga.transform.position.x;
    y = ga.transform.position.y;
    wide = 4;
    high = 4;
    float scx=-(1/wide);
    float scy=-(1/high);
    float offx=-(wide-1-x)/wide;
    float offy=-(high-1-y)/high;
    ga.renderer.material.SetTextureScale("_MainTex", new Vector2(scx,scy));
    ga.renderer.material.SetTextureOffset("_MainTex", new Vector2(offx, offy));  
}

}

Notice:

Think of a brick wall 4 bricks tall by 4 bricks wide.
Think of one graphic covering all 16 bricks such that the image is intact accross the entire wall.
Each brick gets a part of the image.
The GameObject is a cube whose scale is 1,1,1
The graphic is already a material on the cube surface.
position x=0,y=0 is the lower left corner of the structure
position 3,3 is the upper right brick.
In Unity, the material has a "Tileing" and an "Offset" properties.
In the c# code the SetTextureScale actually changes the "Tileing" property.

There you have it.