LineRendererTest1-2.cs

using System.Collections;
using System.Collections.Generic;
using UnityEngine;

public class LineRendererTest1-2  : MonoBehaviour {

	private LineRenderer lr;
	private Renderer rn;

	void Start () {
		lr = GetComponent<LineRenderer>();
		lr.SetVertexCount(4);
		lr.SetWidth(0.2f,0.2f);
		lr.SetPosition(0,new Vector3(-7.0f,-2.0f,25.0f));
		lr.SetPosition(1,new Vector3(14.0f,-2.0f,25.0f));
		lr.SetPosition(2,new Vector3(-7.0f,-2.0f,25.0f));
		lr.SetPosition(3, new Vector3(-7.0f,15.0f,25.0f));
		rn = GetComponent<Renderer>();
		
	
		// colorの範囲は0-1.0f。 ただし、Inspectorでは0-255で表示される
		rn.material.SetColor("_Color",new Color(1.0f,0.0f,0.0f,1));  //R,G,B = 255,0,0,255に相当
		
	
		//これを追加すると、Emissionの色を指定できる
		rn.material.SetColor("_EmissionColor",new Color(1.0f,0.0f,0.0f));
		
		//もしこのように書くと、Emissionが入ったような色表示になる。実行はできるがconsoleにはエラーが出る
		/*
		*Invalid normalized color: RGBA(255.000, 0.000, 0.000, 255.000), normalize value: 0 UnityEditor.DockArea:OnGUI()
		*/
		//rn.material.SetColor("_Color",new Color(255,0,0,255));
	}
}