/// <summary>
/// 从视图坐标系（屏幕上）移除圆的投影
/// </summary>
/// <param name="circle">逻辑坐标系中的圆</param>
/// <returns>操作结果</returns>
public int RemoveCircle(Circle circle)
{
foreach (OutputGeometry outputGeometry in outputPointSetList)
{
if (outputGeometry is OutputCircle)
{
OutputCircle outputCircle = outputGeometry as OutputCircle;
if (outputCircle.circle == circle)
{
outputPointSetList.Remove(outputGeometry);
return(1);
}
}
}
return(0);
}
/// <summary>
/// 添加逻辑坐标系中圆在视图坐标系的投影
/// </summary>
/// <param name="circle"></param>
/// <returns>操作结果</returns>
public int AddCircle(Circle circle)
{
OutputCircle outputCircle = new OutputCircle()
{
borderType = ViewType.Solid,
isVisible = true,
fillColor = Color.FromArgb(255, 76, 123, 207),
lineColor = Color.FromArgb(255, 76, 123, 207),
circle = circle,
selectedFillColor = Color.FromArgb(255, 128, 128, 128),
selectedLineColor = Color.FromArgb(255, 255, 99, 71),
thickness = 8,
center = ToVector2(circle.center),
radius = (ToVector2(circle.center) - ToVector2(circle.radius)).Length(),
};
circle.resultCircle = outputCircle;
outputPointSetList.Add(outputCircle);
return(0);
}
/// <summary>
/// 刷新显示坐标系中所有的元素坐标
/// </summary>
public void refreshGeometrys()
{
foreach (OutputPoint outputPoint in outputPointList)
{
outputPoint.viewPoint = ToVector2(outputPoint.point);
}
int i = 0;
OutputGeometry outputGeometry;
while (i < outputPointSetList.Count)
{
outputGeometry = outputPointSetList[i];
if (outputGeometry is OutputPoint)
{
throw new Exception("不可能触发的异常");
}
else if (outputGeometry is OutputLine)
{
OutputLine outLine = outputGeometry as OutputLine;
Line line = outLine.line;
if (line.lineRely == LineRely.Normal) //两点生成
{
if (line.type == LineType.Line) //线段
{
if (!(outputPointSetList[i + 1] is OutputLine))
{
throw new Exception();
}
if ((outputPointSetList[i + 1] as OutputLine).line != line)
{
throw new Exception();
}
Vector2 v1 = ToVector2(line.p1);
Vector2 v2 = ToVector2(line.p2);
Vector2 v3 = new Vector2();
Vector2 v4 = new Vector2();
if (v1.X == v2.X) //竖线
{
v3.X = v1.X;
v3.Y = 0;
v4.X = v1.X;
v4.Y = WindowHeight;
}
else if (Math.Abs(v2.Y - v1.Y) > Math.Abs(v2.X - v1.X))
{
v3.X = v1.X - v1.Y * (v1.X - v2.X) / (v1.Y - v2.Y);
v3.Y = 0;
v4.X = (WindowHeight - v1.Y) / (v2.Y - v1.Y) * v2.X + (v2.Y - WindowHeight) / (v2.Y - v1.Y) * v1.X;
v4.Y = WindowHeight;
}
else if (Math.Abs(v2.Y - v1.Y) <= Math.Abs(v2.X - v1.X))
{
v3.X = WindowWidth;
v3.Y = (WindowWidth - v1.X) / (v2.X - v1.X) * v2.Y + (v2.X - WindowWidth) / (v2.X - v1.X) * v1.Y;
v4.X = 0;
v4.Y = v1.Y - v1.X * (v1.Y - v2.Y) / (v1.X - v2.X);
}
else
{
throw new Exception();
}
OutputLine outputLineNew = new OutputLine()
{
borderType = ViewType.Solid,
isVisible = true,
fillColor = Color.FromArgb(255, 76, 123, 207),
lineColor = Color.FromArgb(255, 76, 123, 207),
line = line,
selectedFillColor = Color.FromArgb(255, 130, 91, 230),
selectedLineColor = Color.FromArgb(255, 255, 99, 91),
thickness = 8,
p1 = v1,
p2 = v2,
};
OutputLine outputLineStraightNew = new OutputLine()
{
borderType = ViewType.Solid,
isVisible = true,
fillColor = Color.FromArgb(128, 86, 106, 143),
lineColor = Color.FromArgb(128, 86, 106, 143),
line = line,
selectedFillColor = Color.FromArgb(128, 86, 106, 143),
selectedLineColor = Color.FromArgb(128, 86, 106, 143),
thickness = 8,
p1 = v3,
p2 = v4,
};
line.resultLine.Clear();
line.resultLine.Add(outputLineStraightNew); //先画延长线
outputPointSetList[i] = outputLineStraightNew;
line.resultLine.Add(outputLineNew); //覆盖线段
outputPointSetList[i + 1] = outputLineNew;
i = i + 2;
}
}
}
else if (outputGeometry is OutputCircle)
{
OutputCircle outputCircle = outputGeometry as OutputCircle;
outputCircle.center = ToVector2(outputCircle.circle.center);
outputCircle.radius = (ToVector2(outputCircle.circle.center) - ToVector2(outputCircle.circle.radius)).Length();
i++;
}
}
}
