/// <summary>
/// 求矩形B在当前矩形上的投影填充点
/// </summary>
/// <param name="_b">矩形B</param>
/// <returns>填充点</returns>
public List <Vector3> IntersectionFill(GraphicRect2D _b)
{
List <Vector3> vertexs = new List <Vector3>();
if (index != _b.index)
{
Vector3 va = Vector3.zero;
Vector3 vb = Vector3.zero;
Vector3 vp = Vector3.zero;
Vector3 ab = Vector3.zero;
Vector3 ap = Vector3.zero;
Vector3 pab = Vector3.zero;
for (int i = 0; i < corners.Length; i++)
{
va = corners[i];
vertexs.Add(va);
if (i >= corners.Length - 1)
{
vb = corners[0];
}
else
{
vb = corners[i + 1];
}
for (int p = 0; p < _b.corners.Length; p++)
{
vp = _b.corners[p];
ab = vb - va;
ap = vp - va;
//P点在AB上的投影点pab
pab = Vector3.Project(ap, ab);
//如果投影点的方向与ab方向一致，并且ab的长度大于ap的长度，则投影点在ab边上，为矩形交点
if (Vector3.Dot(ab, pab) >= 0 && ab.magnitude >= ap.magnitude)
{
vertexs.Add(va + pab);
}
}
}
}
return(vertexs);
}
/// <summary>
/// 仅填充遮罩
/// </summary>
/// <param name="_vh">顶点Helper</param>
/// <param name="_masks">绘制组</param>
protected virtual void OnFillMask(VertexHelper _vh, List <AbsUIGuideGraphic> _masks)
{
_vh.Clear();
List <UIVertex> vertexs = new List <UIVertex>();
Vector3[] fourCorners = null;
GraphicRect2D sceneRect = new GraphicRect2D(-1, this);
Vector4 uv = (sprite != null) ? UnityEngine.Sprites.DataUtility.GetOuterUV(sprite) : Vector4.zero;
foreach (AbsUIGuideGraphic g in _masks)
{
g.graphic.GraphicLocalCornersForVertexHelper(out fourCorners);
vertexs = new List <UIVertex>();
switch (graphicSpriteFillClassify)
{
case enGraphicSpriteFillClassify.SceneRatioFill:
fourCorners[0].x = Mathf.Clamp(fourCorners[0].x, sceneRect.rect.xMin, sceneRect.rect.xMax);
fourCorners[0].y = Mathf.Clamp(fourCorners[0].y, sceneRect.rect.yMin, sceneRect.rect.yMax);
vertexs.Add(new UIVertex()
{
position = fourCorners[0], color = color, uv0 = Rect.PointToNormalized(sceneRect.rect, fourCorners[0])
});
fourCorners[1].x = Mathf.Clamp(fourCorners[1].x, sceneRect.rect.xMin, sceneRect.rect.xMax);
fourCorners[1].y = Mathf.Clamp(fourCorners[1].y, sceneRect.rect.yMin, sceneRect.rect.yMax);
vertexs.Add(new UIVertex()
{
position = fourCorners[1], color = color, uv0 = Rect.PointToNormalized(sceneRect.rect, fourCorners[1])
});
fourCorners[2].x = Mathf.Clamp(fourCorners[2].x, sceneRect.rect.xMin, sceneRect.rect.xMax);
fourCorners[2].y = Mathf.Clamp(fourCorners[2].y, sceneRect.rect.yMin, sceneRect.rect.yMax);
vertexs.Add(new UIVertex()
{
position = fourCorners[2], color = color, uv0 = Rect.PointToNormalized(sceneRect.rect, fourCorners[2])
});
fourCorners[3].x = Mathf.Clamp(fourCorners[3].x, sceneRect.rect.xMin, sceneRect.rect.xMax);
fourCorners[3].y = Mathf.Clamp(fourCorners[3].y, sceneRect.rect.yMin, sceneRect.rect.yMax);
vertexs.Add(new UIVertex()
{
position = fourCorners[3], color = color, uv0 = Rect.PointToNormalized(sceneRect.rect, fourCorners[3])
});
break;
case enGraphicSpriteFillClassify.MaskAloneFill:
vertexs.Add(new UIVertex()
{
position = fourCorners[0], color = color, uv0 = new Vector2(uv.x, uv.y)
});
vertexs.Add(new UIVertex()
{
position = fourCorners[1], color = color, uv0 = new Vector2(uv.x, uv.w)
});
vertexs.Add(new UIVertex()
{
position = fourCorners[2], color = color, uv0 = new Vector2(uv.z, uv.w)
});
vertexs.Add(new UIVertex()
{
position = fourCorners[3], color = color, uv0 = new Vector2(uv.z, uv.y)
});
break;
}
_vh.AddUIVertexQuad(vertexs.ToArray());
}
}
/// <summary>
/// 除遮罩之外都填充
/// </summary>
/// <param name="_vh">顶点Helper</param>
/// <param name="_masks">绘制组</param>
protected virtual void OnFillExceptMask(VertexHelper _vh, List <AbsUIGuideGraphic> _masks)
{
#region 屏幕矩形
GraphicRect2D sceneRect = new GraphicRect2D(-1, this);
#endregion
#region 遮罩矩形
List <GraphicRect2D> maskRect = new List <GraphicRect2D>();
GraphicRect2D rect;
for (int i = 0; i < _masks.Count; i++)
{
rect = new GraphicRect2D(i, _masks[i].graphic);
maskRect.Add(rect);
}
//求两矩形填充点和矩形在屏幕上的填充点
List <Vector3> useVertexs = new List <Vector3>();
List <Vector3> tempVertexs = new List <Vector3>();
List <Vector3> validateVertexs = new List <Vector3>();
if (maskRect.Count <= 1)
{
tempVertexs = maskRect[0].IntersectionFill(sceneRect);
if (tempVertexs.Count > 0)
{
validateVertexs.AddRange(tempVertexs);
}
}
else
{
foreach (GraphicRect2D a in maskRect)
{
foreach (GraphicRect2D b in maskRect)
{
tempVertexs = a.IntersectionFill(b);
if (tempVertexs.Count > 0)
{
validateVertexs.AddRange(tempVertexs);
}
}
}
}
#endregion
validateVertexs.InsertRange(0, sceneRect.corners);
#region 清理重复的点
List <int> hasPoint = new List <int>();
int pk = 0;
Vector3 tp = Vector3.zero;
foreach (Vector3 cv in validateVertexs)
{
//顶点不超过屏幕
tp.x = cv.x;
tp.x = Mathf.Max(tp.x, sceneRect.rect.xMin);
tp.x = Mathf.Min(tp.x, sceneRect.rect.xMax);
tp.y = cv.y;
tp.y = Mathf.Max(tp.y, sceneRect.rect.yMin);
tp.y = Mathf.Min(tp.y, sceneRect.rect.yMax);
//过滤重复点
pk = (tp.x.ToString() + tp.y.ToString()).UniqueHashCode();
if (!hasPoint.Contains(pk))
{
hasPoint.Add(pk);
useVertexs.Add(tp);
}
}
#endregion
mDelaunayResult = Polygon2DUtility.BuilderDelaunay2D(useVertexs, new List <int>()
{
0, 1, 2, 3
});
#region 绘制三角面
_vh.Clear();
Vector4 uv = (sprite != null) ? UnityEngine.Sprites.DataUtility.GetOuterUV(sprite) : Vector4.zero;
UIVertex[] vertexs = new UIVertex[mDelaunayResult.vertexs.Count];
List <int> vertexIndexs = new List <int>();
foreach (PolygonPoint2D p in mDelaunayResult.vertexs)
{
vertexs[p.index] = new UIVertex()
{
position = p.position, color = color, uv0 = Rect.PointToNormalized(sceneRect.rect, p.position)
};
}
bool isInAnyRect = false;
foreach (PolygonTriangle2D tri in mDelaunayResult.delaunayTriangle)
{
foreach (GraphicRect2D r in maskRect)
{
isInAnyRect =
Geometry2DUtility.IsPointInRect(tri.vertexs[0].position, r.rect) &&
Geometry2DUtility.IsPointInRect(tri.vertexs[1].position, r.rect) &&
Geometry2DUtility.IsPointInRect(tri.vertexs[2].position, r.rect);
if (isInAnyRect)
{
break;
}
}
if (!isInAnyRect)
{
vertexIndexs.Add(tri.vertexs[0].index);
vertexIndexs.Add(tri.vertexs[1].index);
vertexIndexs.Add(tri.vertexs[2].index);
}
}
_vh.AddUIVertexStream(new List <UIVertex>(vertexs), vertexIndexs);
#endregion
}
