koobas.hobune.stream
How to draw a line between two points in Unity
How can i draw a line between two points in Unity?
Best Answer
Use a line renderer, GL.Lines, a mesh using MeshTopology.Lines (in Unity 4), or Vectrosity.
The second question. How do i have to use it? I mean how can i edit point array there?
Draw a line Between two points
Points are the GameObjects (Sprites having dot image)
using UnityEngine;
using System.Collections;
public class DrawLineAgain : MonoBehaviour {
private int ClickCount = 0;
private Vector2[] clicks = new Vector2[100];
private GameObject[] lines= new GameObject[100];
private LineRenderer[] newLine= new LineRenderer[100];
private Object[] pointArr = new Object[101];
private GameObject point;
public bool ifMaskBtnClicked = false;
public bool ifAutoMaskBtnClicked = false;
private bool ifResetClicked = false;
void Start()
{
for (int i=0; i<lines.Length; i++) {
lines[i] = new GameObject();
}
for (int i=0; i<lines.Length; i++) {
newLine[i] = lines[i].AddComponent<LineRenderer> ();
newLine[i].SetWidth (0.1f, 0.1f);
}
point = GameObject.Find ("/Point");
}
public void Update()
{
if(ifMaskBtnClicked){
if(ifResetClicked){
print ("reinitialise");
ClickCount=0;
pointArr = new Object[101];
clicks = new Vector2[100];
lines= new GameObject[100];
newLine= new LineRenderer[100];
pointArr = new Object[101];
for (int i=0; i<lines.Length; i++) {
lines[i] = new GameObject();
}
for (int i=0; i<lines.Length; i++) {
newLine[i] = lines[i].AddComponent<LineRenderer> ();
newLine[i].SetWidth (0.1f, 0.1f);
}
point = GameObject.Find ("/Point");
}
if (Input.GetMouseButtonDown(0)){
while(ClickCount<lines.Length) {
print ("ClickCount : "+ClickCount);
if(ClickCount == 0){
clicks[ClickCount] = new Vector2(Input.mousePosition.x , Input.mousePosition.y );
clicks[ClickCount] = Camera.main.ScreenToWorldPoint(clicks[ClickCount]);
pointArr[ClickCount]= Instantiate(point,clicks[ClickCount],Quaternion.identity);
ClickCount++;
break;
}else{
clicks[ClickCount] = new Vector2(Input.mousePosition.x , Input.mousePosition.y );
clicks[ClickCount] = Camera.main.ScreenToWorldPoint(clicks[ClickCount]);
newLine[ClickCount].SetPosition(0, clicks[ClickCount-1]);
newLine[ClickCount].SetPosition(1, clicks[ClickCount]);
pointArr[ClickCount] = Instantiate(point,clicks[ClickCount],Quaternion.identity);
ClickCount++;
break;
}
}
}
if(Input.GetKeyDown(KeyCode.A)){
setAutoMaskBtnClicked(true);
}
}
if(ifAutoMaskBtnClicked){
print ("ifAutoMaskBtnClicked : ClickCount "+ (ClickCount-1));
clicks[ClickCount] = clicks[ClickCount -1];
//clicks[ClickCount] = Camera.main.ScreenToWorldPoint(clicks[ClickCount]);
newLine[ClickCount].SetPosition(0, clicks[ClickCount]);
newLine[ClickCount].SetPosition(1, clicks[0]);
//Instantiate(point,clicks[ClickCount],Quaternion.identity);
ifAutoMaskBtnClicked = false;
ifMaskBtnClicked = false;
}
}
public void Reset(){
ifResetClicked = true;
ifAutoMaskBtnClicked = false;
ifMaskBtnClicked = false;
for (int i=0; i<lines.Length; i++) {
DestroyObject (pointArr[i]);
//DestroyImmediate(newLine);
newLine [i].SetVertexCount (0);
}
}
public void setMaskBtnClicked(bool value){
ifMaskBtnClicked = true;
}
public void setAutoMaskBtnClicked(bool value){
ifAutoMaskBtnClicked = true;
}
}
/*
if (firstTouch)
{
firstClick = new Vector2(Input.mousePosition.x , Input.mousePosition.y );
firstClick = Camera.main.ScreenToWorldPoint(firstClick);
firstTouch = false;
}
else
{
Vector2 secondClick = new Vector2(Input.mousePosition.x , Input.mousePosition.y );
secondClick = Camera.main.ScreenToWorldPoint(secondClick);
newLine.SetPosition(0, firstClick);
newLine.SetPosition(1, secondClick);
firstTouch = true;
}*/
