/// <summary>每添加一个圆，就计算一次方向
/// </summary>
public void CalAngleAndconnectTheJumpedCircle()
{
if (CircleSet == null || CircleSet.Count <= 1)
{
return;
}
//取出最后一个对象
PCCircle lastOne = CircleSet.Last();
//倒数第二个
PCCircle lastTwo = CircleSet[CircleSet.Count - 2];
//计算倒数第二个的位置
nfloat last_1_x = lastOne.Center.X;
nfloat last_1_y = lastOne.Center.Y;
nfloat last_2_x = lastTwo.Center.X;
nfloat last_2_y = lastTwo.Center.Y;
// 1.计算角度（反正切函数）
nfloat angle = (nfloat)(Math.Atan2(last_1_y - last_2_y, last_1_x - last_2_x) + Math.PI / 2);
lastTwo.Angle = angle;
// 2.处理跳跃连线
CGPoint center = CenterPointWithPointOne(lastOne.Center, lastTwo.Center);
PCCircle centerCircle = EnumCircleSetToFindWhichSubviewContainTheCenterPoint(center);
if (centerCircle != null)
{
// 把跳过的圆加到数组中，它的位置是倒数第二个
if (!CircleSet.Contains(centerCircle))
{
CircleSet.Insert(CircleSet.Count - 1, centerCircle);
}
}
}
/// <summary>解锁视图准备
/// </summary>
private void LockViewPrepare()
{
BackgroundColor = PCCircleViewConst.CircleBackgroundColor;
for (int i = 0; i < 9; i++)
{
PCCircle circle = new PCCircle();
circle.Type = CircleType.CircleTypeInfo;
AddSubview(circle);
}
}
/// <summary> 连线绘制图案(以设定颜色绘制) 将选中的圆形以color颜色链接起来
/// </summary>
/// <param name="rect">图形上下文</param>
/// <param name="color">连线颜色</param>
public void ConnectCirclesInRect(CGRect rect, UIColor color)
{
//获取上下文
CGContext ctx = UIGraphics.GetCurrentContext();
// 添加路径
ctx.AddRect(rect);
//是否剪裁
ClipSubviewsWhenConnectInContext(ctx, Clip);
//剪裁上下文
ctx.EOClip();
// 遍历数组中的circle
for (int index = 0; index < CircleSet.Count; index++)
{
// 取出选中按钮
PCCircle circle = CircleSet[index];
// 起点按钮
if (index == 0)
{
ctx.MoveTo(circle.Center.X, circle.Center.Y);
}
else
{
// 全部是连线
ctx.AddLineToPoint(circle.Center.X, circle.Center.Y);
}
}
// 连接最后一个按钮到手指当前触摸得点
if (!CurrentPoint.Equals(new CGPoint(0, 0)))
{
foreach (var item in Subviews)
{
if (GetCircleState() == CircleState.CircleStateError || GetCircleState() == CircleState.CircleStateLastOneError)
{
// 如果是错误的状态下不连接到当前点
}
else
{
ctx.AddLineToPoint(CurrentPoint.X, CurrentPoint.Y);
}
}
}
//线条转角样式
ctx.SetLineCap(CGLineCap.Round);
ctx.SetLineJoin(CGLineJoin.Round);
// 设置绘图的属性
ctx.SetLineWidth(PCCircleViewConst.CircleConnectLineWidth);
// 线条颜色
color.SetColor();
//渲染路径
ctx.StrokePath();
}
/// <summary>解锁视图准备
/// </summary>
public void LockViewPrepare()
{
this.Frame = new CGRect(0, 0, UIScreen.MainScreen.Bounds.Size.Width - PCCircleViewConst.CircleViewEdgeMargin * 2, UIScreen.MainScreen.Bounds.Size.Width - PCCircleViewConst.CircleViewEdgeMargin * 2);
this.Center = new CGPoint(UIScreen.MainScreen.Bounds.Size.Width / 2, PCCircleViewConst.CircleViewCenterY);
// 默认剪裁子控件
Clip = true;
// 默认有箭头
Arrow = true;
this.BackgroundColor = PCCircleViewConst.CircleBackgroundColor;
for (int i = 0; i < 9; i++)
{
PCCircle circle = new PCCircle();
circle.Type = CircleType.CircleTypeGesture;
circle.Arrow = Arrow;
AddSubview(circle);
}
}
/// <summary> 给一个点，判断这个点是否被圆包含，如果包含就返回当前圆，如果不包含返回的是NULL
///
/// </summary>
/// <param name="point">前点</param>
/// <returns>点所在的圆</returns>
public PCCircle EnumCircleSetToFindWhichSubviewContainTheCenterPoint(CGPoint point)
{
PCCircle centerCircle = null;
foreach (PCCircle circle in Subviews)
{
if (circle.Frame.Contains(point))
{
centerCircle = circle;
}
}
if (centerCircle != null && !CircleSet.Contains(centerCircle))
{
// 这个circle的角度和倒数第二个circle的角度一致
centerCircle.Angle = CircleSet[CircleSet.Count - 2].Angle;
}
return(centerCircle); // 注意：NULL，就是当前点不在圆内
}
