Unity 3D Game Engine – Long Touch – Draw Line – JavaScript

Unity 3D Game Engine – Long Touch – Draw Line – JavaScript

1. Main Camera attach ‘FingerLine.js’

FingerLine.js:

#pragma strict

// It automatically adds Add Component> Effects> Line Renderer
@script RequireComponent(LineRenderer)

var lineRenderer : LineRenderer;
var myPoints : Vector3[];

function Start () {
    // Setup of LineRenderer Component
    lineRenderer = GetComponent(LineRenderer);
    lineRenderer.SetWidth(0.2,0.2);
}

function Update () {

    if(myPoints){
        lineRenderer.SetVertexCount(myPoints.Length);
        for(var i = 0;i<myPoints.Length;i++){
            lineRenderer.SetPosition(i,myPoints[i]);    
        }
    }
    else
    lineRenderer.SetVertexCount(0);
    
    if(Input.touchCount > 0){
    if(Input.touches[0].phase == TouchPhase.Began)
        // it is only drawing 10 points per second, as per the line
        InvokeRepeating("AddPoint",.1,.1);
    } 
    else{
        CancelInvoke();
        myPoints = null;
    }
}

function AddPoint(){
   
    var tempPoints : Vector3[];

    if(!myPoints)
        tempPoints = new Vector3[1];
    else{
        tempPoints = new Vector3[myPoints.Length+1];
               
    	for(var j = 0; j < myPoints.Length; j++)
        	tempPoints[j] = myPoints[j];
    }
        var tempPos : Vector3 = Input.mousePosition;
    tempPos.z = 10;
    
   tempPoints[j] = Camera.main.ScreenToWorldPoint(tempPos);
   myPoints = new Vector3[tempPoints.Length]; 
   myPoints = tempPoints;   
}

NOTICE: it seems to be a little sluggish.