unity - slider 運用 控制顏色

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using UnityEngine;
using System.Collections;
using UnityEngine.UI;
using System;
using System.Linq;
using System.Collections.Generic;

public class NewBehaviourScript : MonoBehaviour {

// Use this for initialization
void Start () {

}

// Update is called once per frame
void Update () {

}
public void myfun()
{
float rnum=0;
float gnum=0;
float bnum=0;

rnum=GameObject.Find("Slider").GetComponent<Slider>().value;
gnum=GameObject.Find("Slider1").GetComponent<Slider>().value;
bnum=GameObject.Find("Slider2").GetComponent<Slider>().value;

Text mytxt=GameObject.Find("Text").GetComponent<Text>();
Text mytxt1=GameObject.Find("Text1").GetComponent<Text>();
Text mytxt2=GameObject.Find("Text2").GetComponent<Text>();

mytxt.text =rnum.ToString();
mytxt1.text =gnum.ToString();
mytxt2.text =bnum.ToString();

Image img = GameObject.Find ("Image").GetComponent<Image> ();
Image img1 = GameObject.Find ("Image1").GetComponent<Image> ();
Image img2 = GameObject.Find ("Image2").GetComponent<Image> ();
Image img3 = GameObject.Find ("Image3").GetComponent<Image> ();

img.color = new Color(rnum, 0.0F, 0.0F, 1.0F); // (紅red,綠green,藍blue,透明)
img1.color = new Color(0.0F, gnum, 0.0F, 1.0F); // (紅red,綠green,藍blue,透明)
img2.color = new Color(0.0F, 0.0F, bnum, 1.0F); // (紅red,綠green,藍blue,透明)
img3.color = new Color(rnum, gnum,bnum, 1.0F); // (紅red,綠green,藍blue,透明)
}



}