4398 【前端】【1.2】添加翻转图片组件

client_linchunjie

2018-11-02 b3925060e1fc26864e835b5fa9ab387f8014f320

4398 【前端】【1.2】添加翻转图片组件

 UI/Decorate/Graph/FlipImage.cs

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

using UnityEngine.UI;



[DisallowMultipleComponent]

[RequireComponent(typeof(Image))]

public class FlipImage : BaseMeshEffect

{

    [SerializeField] bool flipHorizontal = false;

    [SerializeField] bool flipVertical = false;



    public override void ModifyMesh(VertexHelper vh)

    {

        if (!IsActive() || vh.currentVertCount == 0)

        {

            return;

        }

        var vertexs = new List<UIVertex>();

        vh.GetUIVertexStream(vertexs);

        if (flipHorizontal || flipVertical)

        {

            Flip(vertexs);

        }

        vh.Clear();

        vh.AddUIVertexTriangleStream(vertexs);

    }



    void Flip(List<UIVertex> vertexs)

    {

        var rect = graphic.GetPixelAdjustedRect();

        var count = vertexs.Count;

        for (int i = 0; i < count; i++)

        {

            var vertex = vertexs[i];

            var position = vertex.position;

            if (flipHorizontal)

            {

                position.x = -position.x + rect.max.x + rect.min.x;

            }

            if (flipVertical)

            {

                position.y = -position.y + rect.max.y + rect.min.y;

            }

            vertex.position = position;

            vertexs[i] = vertex;

        }

    }

}



 UI/Decorate/Graph/FlipImage.cs.meta

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