Graphic

描述

所有视觉 UI 组件的基类。

创建视觉 UI 组件时，应从此类继承。 下面是在矩形变换区域内绘制彩色四边形的简单示例。

using UnityEngine;
using UnityEngine.UI;

[ExecuteInEditMode]
public class SimpleImage : Graphic
{
    protected override void OnPopulateMesh(VertexHelper vh)
    {
        Vector2 corner1 = Vector2.zero;
        Vector2 corner2 = Vector2.zero;

        corner1.x = 0f;
        corner1.y = 0f;
        corner2.x = 1f;
        corner2.y = 1f;

        corner1.x -= rectTransform.pivot.x;
        corner1.y -= rectTransform.pivot.y;
        corner2.x -= rectTransform.pivot.x;
        corner2.y -= rectTransform.pivot.y;

        corner1.x *= rectTransform.rect.width;
        corner1.y *= rectTransform.rect.height;
        corner2.x *= rectTransform.rect.width;
        corner2.y *= rectTransform.rect.height;

        vh.Clear();

        UIVertex vert = UIVertex.simpleVert;

        vert.position = new Vector2(corner1.x, corner1.y);
        vert.color = color;
        vh.AddVert(vert);

        vert.position = new Vector2(corner1.x, corner2.y);
        vert.color = color;
        vh.AddVert(vert);

        vert.position = new Vector2(corner2.x, corner2.y);
        vert.color = color;
        vh.AddVert(vert);

        vert.position = new Vector2(corner2.x, corner1.y);
        vert.color = color;
        vh.AddVert(vert);

        vh.AddTriangle(0, 1, 2);
        vh.AddTriangle(2, 3, 0);
    }
}

静态变量

变量

公共函数

受保护的函数

继承的成员