/// <summary> 检查边坡是否与指定的标高相交，并返回交点在 AutoCAD 中的几何坐标 </summary>
/// <param name="slp"></param>
/// <param name="ele"></param>
/// <param name="intersPt">返回交点</param>
/// <returns></returns>
private static bool ValidateElevation(SlopeLine slp, CutMethod method, double ele, out Point2d intersPt,
out Slope slopeSeg)
{
intersPt = Point2d.Origin;
slopeSeg = null;
var slpData = slp.XData;
var sec = slp.Section;
var cutY = GetCutY(slpData, sec, method, ele); // sec.GetYFromElev(ele); // 指定的标高在此断面中所对应的 AutoCAD 中的坐标Y值
const double tolerance = 0.01;
foreach (var seg in slpData.Slopes)
{
bool within = (seg.TopPoint.Y - cutY >= tolerance) && (cutY - seg.BottomPoint.Y >= tolerance);
if (within) // 说明此子边坡与指定的标高相交
{
var l = new LineSegment2d(new Point2d(seg.BottomPoint.X, seg.BottomPoint.Y),
new Point2d(seg.TopPoint.X, seg.TopPoint.Y));
var intersPts = l.IntersectWith(new Line2d(new Point2d(0, cutY), new Vector2d(1, 0)));
if (intersPts != null)
{
slopeSeg = seg;
intersPt = intersPts[0];
return(true);
}
}
}
return(false);
}
/// <summary> 按标高将边坡对象进行分割，以实现同一级边坡中分别设置不同的防护形式 </summary>
private void CutSlopes(DocumentModifier docMdf, SlopeLine[] selectedSlopes, CutMethod method, double elev,
double waterLineLength)
{
// ProtectionUtils.SubgradeEnvironmentConfiguration(docMdf);
//
//var layer_Slope = Utils.GetOrCreateLayer(docMdf, ProtectionConstants.LayerName_ProtectionMethod_Slope);
var layer_WaterLine = eZcad.SubgradeQuantity.Utility.SQUtils.GetOrCreateLayer_WaterLine(docMdf);
//var layer_Platform = Utils.GetOrCreateLayer(docMdf, ProtectionConstants.LayerName_ProtectionMethod_Platform);
var es = EditStateIdentifier.GetCurrentEditState(docMdf);
es.CurrentBTR.UpgradeOpen();
//
Point2d intersPt;
Slope intersSlopeSeg;
int cutCount = 0;
docMdf.WriteLineIntoDebuger("被分割的边坡对象：");
var protLayers = ProtectionTags.MapProtectionLayers(_docMdf, selectedSlopes);
foreach (var slp in selectedSlopes)
{
var inters = ValidateElevation(slp, method, elev, out intersPt, out intersSlopeSeg);
if (inters)
{
// 将子边坡按指定的交点进行剪切
var newSegs = CutSlopeSegment(slp.XData, intersSlopeSeg, new Point3d(intersPt.X, intersPt.Y, 0));
slp.XData.Slopes = newSegs;
// 将被剪切掉的子边坡所绑定的文字删除
SlopeLine.EraseText(intersSlopeSeg, docMdf.acDataBase);
// 绘制水位线
var line = new Line(new Point3d(intersPt.X - waterLineLength / 2, intersPt.Y, 0),
new Point3d(intersPt.X + waterLineLength / 2, intersPt.Y, 0));
line.LayerId = layer_WaterLine.Id;
es.CurrentBTR.AppendEntity(line);
docMdf.acTransaction.AddNewlyCreatedDBObject(line, true);
slp.XData.Waterlines.Add(line.Handle);
// 将刷新后的数据保存到 AutoCAD 文档与界面中
slp.Pline.UpgradeOpen();
SlopeConstructor.SetSlopeUI(slp);
slp.PrintProtectionMethod(es.CurrentBTR, protLayers);
slp.FlushXData();
slp.Pline.DowngradeOpen();
//
cutCount += 1;
docMdf.WriteLineIntoDebuger(slp);
}
}
es.CurrentBTR.DowngradeOpen();
docMdf.WriteLineIntoDebuger($"总计：{cutCount} 个");
}
private static double GetCutY(SlopeLine slp, CutMethod method, double value)
{
double cutY = 0;
switch (method)
{
case CutMethod.FromInner:
break;
default: // 按绝对标高
cutY = slp.Section.GetYFromElev(value);
break;
}
return(cutY);
}
/// <summary>コンストラクタ</summary>
/// <param name="howToCut">切り方</param>
/// <param name="digitsAfterDP">小数点数以下ｘ桁</param>
public EditDigitsAfterDP(CutMethod howToCut, uint digitsAfterDP)
{
this.HowToCut = howToCut;
this.DigitsAfterDP = digitsAfterDP;
}
/// <summary>コンストラクタ</summary>
/// <param name="howToCut">切り方</param>
/// <param name="digitsAfterDP">小数点数以下ｘ桁</param>
public EditDigitsAfterDP(CutMethod howToCut, uint digitsAfterDP)
{
this.HowToCut = howToCut;
this.DigitsAfterDP = digitsAfterDP;
}
