UI 多点触控架构？答案

【问题标题】：UI Multitouch Architecture?UI 多点触控架构？
【发布时间】：2015-11-18 11:11:01
【问题描述】：

我正在开发一款带有多点触控控制器的游戏。但我在 UI Image 多点触控方面遇到了问题

我想创建这个架构。

绿色循环将用作按钮。（触摸结束）
Red Cycle 将用作按钮。我需要触摸移动或触摸停留事件来进行连续拍摄。（触摸移动 | 触摸停留）
黄色框将用作触摸板（UI 图像元素）。当手指在盒子上移动时，会触发Rotate方法。

我尝试了一些方法，但都失败了。

我创建了一个名为 MultiTouchElement 的类。

var touches = Input.touches;
for (int i = 0; i < touches.Count; i++)
{
    Touch touch = Input.GetTouch(i);
    TouchPhase phase = touch.phase;

    PointerEventData eventDataCurrentPosition = new PointerEventData(EventSystem.current);
    eventDataCurrentPosition.position = touch.position;

    List<RaycastResult> results = new List<RaycastResult>();
    EventSystem.current.RaycastAll(eventDataCurrentPosition, results);

    var touchOnThisObject = results.Any(x => x.gameObject.name.ToLower() == this.gameObject.name.ToLower());
    if (!touchOnThisObject)
        return;

    if (phase == TouchPhase.Began)
    {
        this.GetComponent<Image>().color = Color.red;
    }
    if (phase == TouchPhase.Ended)
    {
        this.GetComponent<Image>().color = Color.blue;
    }
}

我的架构有教程吗？

【问题讨论】：

标签： c# unity3d multi-touch

【解决方案1】：

我找到了解决方案:)

谢谢@IsGreen兄弟

来源：http://forum.unity3d.com/threads/solved-raycast-multitouch-input-convert-local-recttransform-rect-to-screen-position.318115/

using UnityEngine;
using UnityEngine.UI;
using UnityEngine.EventSystems;
using System.Collections.Generic;

public class UImageRayCast : MonoBehaviour
{
Image image;
Color colorOn, colorOff;

void Start()
{
    this.image = this.GetComponent<Image>();
    this.colorOff = this.image.color;
    this.colorOn = new Color(this.colorOff.r, this.colorOff.g, this.colorOff.b, this.colorOff.a * 0.5f);
}

void Update()
{

    this.image.color = this.colorOff;

    PointerEventData pointer = new PointerEventData(EventSystem.current);
    List<RaycastResult> raycastResult = new List<RaycastResult>();

    foreach (Touch touch in Input.touches)
    {
        pointer.position = touch.position;
        EventSystem.current.RaycastAll(pointer, raycastResult);
        foreach (RaycastResult result in raycastResult)
        {
            if (result.gameObject == this.gameObject)
            {
                if(touch.phase == TouchPhase.Began)
                {
                    Debug.Log("Began " + result.gameObject.name );
                }
                else if(touch.phase == TouchPhase.Moved || touch.phase == TouchPhase.Stationary)
                {
                    this.image.color = this.colorOn;
                }
                else if (touch.phase == TouchPhase.Ended)
                {
                    Debug.Log("End  " + result.gameObject.name);
                }
                //this.gameObject.transform.position = touch.position;

                //Do Stuff

            }

        }

        raycastResult.Clear();

    }

}

【讨论】：