private void Awake()
{
guideEventPenetrate = GetComponentInChildren <GuideEventPenetrate>();
if (guideEventPenetrate != null)
{
guideEventPenetrate.SetTargetImage(target);
}
Canvas canvas = GameObject.Find("Canvas").GetComponent <Canvas>();
//获取高亮区域 的四个顶点的世界坐标
target.rectTransform.GetWorldCorners(corners);
//计算高亮显示区域在画布中的范围 0是左下角 1是左上角 2是右上角 3是右下角
targetOffsetX = Vector2.Distance(WorldToCanvas(canvas, corners[0]), WorldToCanvas(canvas, corners[3])) / 2;
targetOffsetY = Vector2.Distance(WorldToCanvas(canvas, corners[0]), WorldToCanvas(canvas, corners[1])) / 2;
//计算显示的中心
float x = corners[0].x + ((corners[3].x - corners[0].x)) / 2;
float y = corners[0].y + ((corners[1].y - corners[0].y)) / 2;
Vector3 centerWorldPos = new Vector3(x, y, 0);
Vector2 centerCanvsPos = WorldToCanvas(canvas, centerWorldPos);
//设置遮罩材料中心变量
Vector4 centerMat = new Vector4(centerCanvsPos.x, centerCanvsPos.y, 0, 0);
material = GetComponent <Image>().material;
material.SetVector("_Center", centerMat);
//计算当前的偏移
RectTransform canvasRectTransform = canvas.transform as RectTransform;
if (canvasRectTransform != null)
{
//获取画布的四个 世界坐标顶点
canvasRectTransform.GetWorldCorners(corners);
//计算初始值
for (int i = 0; i < corners.Length; i++)
{
if (i % 2 == 0)
{
currentOffsetX = Mathf.Max(Vector3.Distance(WorldToCanvas(canvas, corners[i]), centerCanvsPos), currentOffsetX);
}
else
{
currentOffsetY = Mathf.Max(Vector3.Distance(WorldToCanvas(canvas, corners[i]), centerCanvsPos), currentOffsetY);
}
}
}
//设置当前的偏移量
material.SetFloat("_SliderX", currentOffsetX);
material.SetFloat("_SliderY", currentOffsetY);
}
private void Awake()
{
guideEventPenetrate = GetComponentInChildren <GuideEventPenetrate>();
if (guideEventPenetrate != null)
{
guideEventPenetrate.SetTargetImage(target);
}
Canvas canvas = GameObject.Find("Canvas").GetComponent <Canvas>();
//获取高亮区域 的四个顶点的世界坐标
target.rectTransform.GetWorldCorners(corners);
//计算最终显示高亮显示区域的半径
radius = Vector2.Distance(WorldToCanvas(canvas, corners[0]), WorldToCanvas(canvas, corners[2])) / 2.0f;
//计算高亮显示区域的原型 0是左下角 1是左上角 2是右上角 3是右下角
float x = (corners[0].x + corners[3].x) / 2.0f;
float y = (corners[0].y + corners[1].y) / 2.0f;
Vector3 centerWorldPos = new Vector3(x, y, 0);
Vector2 centerCanvsPos = WorldToCanvas(canvas, centerWorldPos);
//设置材质的圆心变量
Vector4 centerMat = new Vector4(centerCanvsPos.x, centerCanvsPos.y, 0, 0);
material = GetComponent <Image>().material;
material.SetVector("_Center", centerMat);
//计算当前显示高亮区域的半径
RectTransform canvasRectTransform = canvas.transform as RectTransform;
if (canvasRectTransform != null)
{
//获取画布的四个 世界坐标顶点
canvasRectTransform.GetWorldCorners(corners);
//计算高亮区域的初始半径
for (int i = 0; i < corners.Length; i++)
{
currentRadius = Mathf.Max(Vector3.Distance(WorldToCanvas(canvas, corners[i]), centerCanvsPos), currentRadius);
}
}
material.SetFloat("_Slider", currentRadius);
}
