【Revit二次开发】创建规则多边形的屋顶（包括平屋顶）

出处

https://spiderinnet.typepad.com/blog/2013/05/revit-net-creations-api-create-regular-polygonal-roof.html

翻译

在Revit .NET API 2013，尽管NewWall方法已移动到Wall类本身，但屋顶生成方法尚未移动。它仍在文件中。创建实例。不管怎样，我们找到了它的位置，并能够建造一些屋顶。

在本文中，让我们创建一个规则多边形屋顶。以下是核心帮助方法。

public static RoofBase CreateRegularPolygonalRoof(
    Document doc, Level level, RoofType rooftype,
    XYZ location, double radius, int sides,
    double slopeangle, double offset)
{
    CurveArray profile = new CurveArray();
    for (int i = 0; i < sides; i++)
    {
        double curAngle = i * Math.PI / sides * 2;
        double nextAngle = (i < sides - 1 ? i + 1 : 0) * Math.PI / sides * 2;

        XYZ curVertex = new XYZ(location.X + radius * Math.Cos(curAngle), location.Y + radius * Math.Sin(curAngle), location.Z);
        XYZ nextVertex = new XYZ(location.X + radius * Math.Cos(nextAngle), location.Y + radius * Math.Sin(nextAngle), location.Z);
        Line line = doc.Application.Create.NewLineBound(curVertex, nextVertex);

        profile.Append(line);
    }

    ModelCurveArray curveArrayMapping = new ModelCurveArray();
    FootPrintRoof roof = doc.Create.NewFootPrintRoof(profile, level, rooftype, out curveArrayMapping);

    foreach (ModelCurve curve in curveArrayMapping)
    {
        roof.set_DefinesSlope(curve, true);
        roof.set_SlopeAngle(curve, slopeangle);
        roof.set_Offset(curve, offset);
    }

    return roof;
}

以下是一些示例调用代码：

RoofCreation.CreateRegularPolygonalRoof(
    CachedDoc,
    RoofCreation.FindAndSortLevels(CachedDoc).First(),
    RoofCreation.FindRoofTypes(CachedDoc).First(),
    XYZ.Zero,
    10.0,
    8,
    Math.PI / 6,
    0.0);

这是Revit中的一个规则多边形屋顶：

平屋顶

如果要生成平屋顶，只需要将set_DefinesSlope方法的第二个参数设置为false，并注释掉后面两行：

roof.set_DefinesSlope(curve, false);
//roof.set_SlopeAngle(curve, slopeangle);
//roof.set_Offset(curve, offset);