Draw path with finger, Help

[Nabil_fx]

I need to draw a line with the finger. and them when finger release, the draw dissapear, or can have a reset button.

Help please!

[mgear]

How does your script works / looks so far, do you get the touch event position?

Unity - Scripting API: Touch

[Nabil_fx]

the code, is with error, here is the code.

using UnityEngine;
using System.Collections;

public class fingerrr;
{
// For touchscreen devices – draw a line with your finger
import Vectrosity;
var lineMaterial : Material;
var maxPoints = 500;
var lineWidth = 4.0;
var minPixelMove = 5; // Must move at least this many pixels per sample for a new segment to be recorded

private var linePoints : Vector2[ ];
private var line : VectorLine;
private var touch : Touch;
private var lineIndex = 0;
private var previousPosition : Vector2;
private var sqrMinPixelMove : int;
private var canDraw = false;

var cube : Transform;
var speed = .05;
private var loop = false;
var ButPress = false;
private var dist = 0.0;

function Start () {
linePoints = new Vector2[maxPoints];
line = new VectorLine(“DrawnLine”, linePoints, lineMaterial, lineWidth, LineType.Continuous);
sqrMinPixelMove = minPixelMove*minPixelMove;
//line.drawEnd = 10;
}

function Update () {
if (Input.touchCount > 0) {
touch = Input.GetTouch(0);

if (ButPress touch.phase == TouchPhase.Moved (touch.position - previousPosition).sqrMagnitude > sqrMinPixelMove canDraw) {
previousPosition = linePoints[++lineIndex] = touch.position;
line.minDrawIndex = lineIndex-1;
line.maxDrawIndex = lineIndex;
if (lineIndex >= maxPoints-1) canDraw = false;
line.Draw();

}
else if (ButPress touch.phase == TouchPhase.Ended){
line.SetDistances();
line.drawEnd = lineIndex;
loop = true;
ButPress = false;
}
}

if (loop){
if (dist < 1.0)
dist += Time.deltaTime*speed;
var splinePoint = line.GetPoint01 (dist);
if (dist >= 0.98)
loop = false;
cube.position = Camera.main.ScreenToWorldPoint (Vector3(splinePoint.x, splinePoint.y, 10.0));

}
}

function buttonPress (){
loop = false;
dist = 0.0;
ButPress = true;

line.ZeroPoints();
line.minDrawIndex = 0;
line.Draw();
previousPosition = linePoints[0] = touch.position;
lineIndex = 0;
canDraw = true;
}

[Landern]

ah… you are mixing c# and unityscript in one file, what language are you trying to use?

note: also a semi-colon after the class name is…a no-no.

[Jimmythesaint82]

I wrote a post about it here:

http://www.aportagames.com/blog/2014/5/16/doodling-roads-creating-3d-vectors-in-unity-with-vectrosity-tutorial