Unity3d creating a dynamic Cube chart system

Unity3d Creating a Dynamic Cube Chart system

This article mainly uses the previous article Shader, through the script to complete a dynamic cube chart change system.

The preparatory work is as follows:

1. Create a new scene, a sphere. Provides a parallel light to the scene, preparing 2 cubic graphs .
2. Add two empty objects, named Empty1 and Empty2, and assign them a different location .
3. Add a new material to the sphere and use the Fresnelreflection Shader (previous article).
4. Finally, create a script that is named CubeDynamic.cs andassign it to the sphere.

A: Start writing the script below:

2 cubic graphs ;

Public Cubemap Cubemapa;

Public Cubemap CUBEMAPB;

2 Reference positions Empty1,2;

Public Transform PosA;

Public Transform PosB;

Private Material Tempmat;

Private Cubemap Tempcubemap;

private int times = 0;

B: In order to conveniently observe the position of Empty1,2 , we use the Ondrawgizmos function to draw the object:

void Ondrawgizmos () {

Gizmos.color = Color.green;

if (PosA) {

Gizmos.drawwiresphere (posa.position,5);

}

if (PosB) {

Gizmos.drawwiresphere (posb.position,5);

}

}

C: Create a new function to determine which Cubemap we should use in different locations

Private Cubemap Getusecubemap () {

float Lengtha = vector3.distance (transform.position,posa.position);

float LENGTHB = vector3.distance (transform.position,posb.position);

if (LENGTHA>LENGTHB) {

return CUBEMAPB;

}

else if (Lengtha < LENGTHB)

{

return Cubemapa;

}

else {

return Cubemapa;

}

}

D: Assigning values in the Update function

void Update () {

times++;

if (times%20==0) {// avoid calculating each frame ;

Tempmat = renderer.sharedmaterial;

if (Tempmat)

{

Tempcubemap = Getusecubemap ();

Tempmat.settexture ("_cubemap", Tempcubemap);

}

Times = 0;

}

}

Save the script and return to the Unity Editor. Click the Play button and move the sphere left and right. You will see an effect similar to the following :

With the simple code above, we can see that the program will fix the frame number to a time period to determine the distance between the sphere and 2 reference positions to calculate which cubemapto use, and then CubeMap assignment to himself. This completes the simple transformation.

Unity3d creating a dynamic Cube chart system