Line Renderer

Vlastnosti:

• Cast Shadows - efekt stínů.
• Receive Shadows - zapíná stíny.
• Motion Vectors -
• Materials - materiál pro vykreslení.
• Positions - pozice čáry (možnost zadat více bodů).
• Use World Space - pozice světa nebo objektu.
• Width- šíře čáry.
• Color- barva čáry i s přechodem.
• Corner Vertices - kolik vrcholů se používá při kreslení rohů mezi čárami.
• End Cap Vertices - kolik vrcholů se používá při kreslení rohů konců čar.
• Alignment - View - čára vždy proti kameře. Local - čára se neotáčí za kamerou.
• Light Probes -
• Reflection Probes -

Vytvoření čáry scriptem

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

public class DrawLine : MonoBehaviour {
    //reference to LineRenderer component 
    private LineRenderer line;
    //car to store mouse position on the screen 
    private Vector3 mousePos;
    //assign a material to the Line Renderer in the Inspector 
    public Material material;
    //number of lines drawn      
    private int currLines = 0;

    void Update()
    {
        //Create new Line on left mouse click(down)  
        if (Input.GetMouseButtonDown(0))
        {
            //check if there is no line renderer created   
            if (line == null)
            {
                //create the line      
                createLine();
            }
            //get the mouse position   
            mousePos = Camera.main.ScreenToWorldPoint(Input.mousePosition);
            //set the z co ordinate to 0 as we are only interested in the xy axes 
            mousePos.z = 0;
            //set the start point and end point of the line renderer         
            line.SetPosition(0, mousePos);
            line.SetPosition(1, mousePos);
        }
        //if line renderer exists and left mouse button is click exited (up)  
        else if (Input.GetMouseButtonUp(0) && line)
        {
            mousePos = Camera.main.ScreenToWorldPoint(Input.mousePosition);
            mousePos.z = 0;
            //set the end point of the line renderer to current mouse position  
            line.SetPosition(1, mousePos);
            //set line as null once the line is created       
            line = null;
            currLines++;
        }
        //if mouse button is held clicked and line exists    
        else if (Input.GetMouseButton(0) && line)
        {
            mousePos = Camera.main.ScreenToWorldPoint(Input.mousePosition);
            mousePos.z = 0;
            //set the end position as current position but dont set line as null as the mouse click is not exited  
            line.SetPosition(1, mousePos);
        }
    }

    //method to create line   
    private void createLine()
    {
        //create a new empty gameobject and line renderer component 
        line = new GameObject("Line" + currLines).AddComponent<LineRenderer>();
        //assign the material to the line     
        line.material = material;
        //set the number of points to the line 
        line.SetVertexCount(2);
        //set the width   
        line.SetWidth(0.15f, 0.15f);
        //render line to the world origin and not to the object's position    
        line.useWorldSpace = true;
        line.SetColors(Color.blue, Color.green);

    }
}

	

Vytvoření barevného přechodu

	    private Gradient gradient =  new Gradient();
	   
	   ....
	   
	   gradient.SetKeys(
                     new GradientColorKey[] {  new GradientColorKey( new Color(1, cisloGrad, 0, 1), 0f),  new GradientColorKey( new Color(1, 1, 0, 1), 1f) },
                     new GradientAlphaKey[] {  new GradientAlphaKey(alpha, 0.0f),  new GradientAlphaKey(alpha, 1.0f) }
                    );

     lineRenderer.colorGradient = gradient;