I'm referring to [this page][1], with the specific sample code as follows:
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using UnityEngine;
using System.Collections;
public class Example : MonoBehaviour {
public int pixWidth;
public int pixHeight;
public float xOrg;
public float yOrg;
public float scale = 1.0F;
private Texture2D noiseTex;
private Color[] pix;
void Start() {
noiseTex = new Texture2D(pixWidth, pixHeight);
pix = new Color[noiseTex.width * noiseTex.height];
renderer.material.mainTexture = noiseTex;
}
void CalcNoise() {
float y = 0.0F;
while (y < noiseTex.height) {
float x = 0.0F;
while (x < noiseTex.width) {
float xCoord = xOrg + x / noiseTex.width * scale;
float yCoord = yOrg + y / noiseTex.height * scale;
float sample = Mathf.PerlinNoise(xCoord, yCoord);
pix[y * noiseTex.width + x] = new Color(sample, sample, sample);
x++;
}
y++;
}
noiseTex.SetPixels(pix);
noiseTex.Apply();
}
void Update() {
CalcNoise();
}
}
----------
As a pretty new beginner, I don't really know how to apply this, or what to make it a component of. That's part of the problem.
Before I even try anything, however, when I paste this sample code into a new script and save it, the console error immediately spits an error at me:
Assets/Scripts/Perlin.cs(25,37): error CS0266: Cannot implicitly convert type 'float' to 'int'. An explicit conversion exists (are you missing a cast?)
So, inside the CalcNoise() function, I looked at line 25, where it appears it doesn't like the fact that "pix[y * noiseTex + x]" contains x and y as floats instead of integers.
I'm not sure how to fix it properly, but I tried starting by declaring x and y as integers. This at least made the error disappear from the console. I then tried adding a new plane to the scene and making this script a component of it, but then when I ran it I got a new error:
Array size must be at least width*height
UnityEngine.Texture2D:SetPixels(Color[])
Perlin:CalcNoise() (at Assets/Scripts/Perlin.cs:30)
Perlin:Update() (at Assets/Scripts/Perlin.cs:34)
...And from here, I'm shamefully lost.
[1]: https://docs.unity3d.com/Documentation/ScriptReference/Mathf.PerlinNoise.html
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