koobas.hobune.stream
simple drawing script
hi all, I am using the script below to enable player to draw a simple picture :
using UnityEngine; using System.Collections;
public class ExampleClass : MonoBehaviour {
public Camera cam;
void Start() {
cam = GetComponent<Camera>();
}
void Update() {
if (!Input.GetMouseButton(0))
return;
RaycastHit hit;
if (!Physics.Raycast(cam.ScreenPointToRay(Input.mousePosition), out hit))
return;
Renderer rend = hit.transform.GetComponent<Renderer>();
MeshCollider meshCollider = hit.collider as MeshCollider;
if (rend == null || rend.sharedMaterial == null || rend.sharedMaterial.mainTexture == null || meshCollider == null)
return;
Texture2D tex = rend.material.mainTexture as Texture2D;
Vector2 pixelUV = hit.textureCoord;
pixelUV.x *= tex.width;
pixelUV.y *= tex.height;
tex.SetPixel((int)pixelUV.x, (int)pixelUV.y, Color.red);
//tex.SetPixel((int)pixelUV.x, (int)pixelUV.y, Color.black);
tex.Apply();
}
}
the two problems I am having are 1) how do I reset the texture once drawn on? (so it is a blank page again as when first loaded and 2) at the moment the line isn't smooth it is staggered dots
can anyone please help me? thankyou for looking
