Using NGUI to make a color picker?

Unity Engine
1

I’m having issues with trying to implement a color picker. I’m using the following code attached to the object:

public Texture2D texture2D = null;
	
	public Color LastPickedColor = new Color(1,1,1,1);
	
	void Awake()
	{
		texture2D = GetComponent<UITexture>().mainTexture as Texture2D;
	}

void OnClick()
	{
		Vector3 textureWheelPos = UICamera.currentCamera.WorldToScreenPoint(transform.position);
		
		Vector2 pos = new Vector2(textureWheelPos.x, textureWheelPos.y);
		
		pos = UICamera.lastTouchPosition - pos;
		
		int x = (int)pos.x;
		
		int y = (int)pos.y;
		
		LastPickedColor = texture2D.GetPixel(x, y);
		Debug.Log(pos);
		Debug.Log("X: " + x + "; Y: " + y + "; Red: " + LastPickedColor.r * 255 + ", Green: " + LastPickedColor.g * 255 + ", Blue: " + LastPickedColor.b * 255 + ", Alpha: " + LastPickedColor.a * 255);
	}

I’m getting sporadic results in the colors i’m getting and am completely stumped as to what is going on. Is anyone able to shed some light on this?

2

Sorry to re-open that…

I’m trying to create a color picker for NGUI and i found on those forums some useful solutions for the basic GUI of Unity. I’m currently trying to implement it for NGUI but i’m facing some troubles : when i click to pick a color (we’ll name it color1), i receive another color : color2.
Moreover, in the image i use (added to this message) color2 is placed a little bit up and right compare to color1.
I’m guessing it’s due to some coordinates problem but i can’t find out why…

Here’s the code i’m using to change the color of some cars :

using UnityEngine;
using System;
using System.Collections;

public class ColorPickNGUI : MonoBehaviour {
   
    public int paramX=0;
    public int paramY=0;
    public UITexture uiTexture;
    private Texture2D colorPicker;
    private int imageWidth;
    private int imageHeight;

    private Material matCar;
    private MeshRenderer meshCar;
    private Car car;

    public void Start(){
        imageWidth=uiTexture.width;
        imageHeight=uiTexture.height;
        colorPicker=(Texture2D)uiTexture.mainTexture;
    }

    public void setCar(Car newCar){
        car=newCar;
    }
   
    public Car getCar(){
        return car;
    }

    public void OnClick(){
        Vector3 pickpos=Input.mousePosition;
        int aaa = Convert.ToInt32(pickpos.x);
        int bbb = Convert.ToInt32(pickpos.y);
        Color col= colorPicker.GetPixel(aaa+paramX,bbb+paramY);
       
        // "col" is the color value that Unity is returning.
        // Here you would do something with this color value, like
        // set a model's material tint value to this color to have it change
        // colors, etc, etc.
        //
        // Right now we are just printing the RGBA color values to the Console

        meshCar=car.getMeshRenderer();
        matCar=meshCar.materials[1];

        matCar.SetColor("_BaseColor",col);
        matCar.name="newLambert";

        car.getMeshRenderer().materials[1]=matCar;
    }
}

Does anyone have an idea for that ?

Thanks a lot !

1176211--45157--$colorpicker_texture.png