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我正在尝试使用 Eyeshot 在 Autodesk naviswork 上创建导航网格。

在使用创建实体后,将顶点和 IndexTriangle 转换为顶点三角形Solid.FromTriangles()

var solidList = new List();
var Solid = Solid.FromTriangles(item.vertices, item.triangles);

但在我看来,它对布尔运算符不起作用。

所以我想提取区域以使用布尔运算符。

如何将区域提取为网格或实体(或顶点三角形)?

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1 回答 1

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这很容易做到。您必须确保您的区域 vertese 已排序,否则您可能会遇到一些问题,但它是一个简单的参数。如果形状不是空心的,这里是一个例子:

// the verteses has to be in order and direction doesn't matter here 
// i simply assume it's drawn on X/Y for the purpose of the example
public static Region CreateRegion(List<Point3D> verteses)
{
    // create a curve list representing
    var curves = new List<ICurve>();

    // for each vertex we add them to the list
    for (int i = 1; i < verteses.Count; i++)
    {
        curves.Add(new Line(verteses[i - 1], verteses[i]));
    }

    // close the region
    curves.Add(new Line(verteses.Last(), verteses[0]));

     return new Region(new CompositeCurve(curves, true), Plane.XY, true);
}

// this extrude in Z the region
public static Solid CreateSolidFromRegion(Region region, double extrudedHeight)
{
    // extrude toward Z by the amount
    return region.ExtrudeAsSolid(new Vector3D(0, 0, 1), extrudedHeight);
}

从 vertese 创建一个 10 x 10 x 10 的立方体的简单示例(制作立方体的方法要简单得多,但为了简单起见,我将制作一个立方体)

// create the 4 verteses
var verteses = new List<Point3D>()
{
    new Point3D(0, 0, 0),
    new Point3D(10, 0, 0),
    new Point3D(10, 10, 0),
    new Point3D(0, 10, 0)
}

// create the region on the XY plane using the static method
var region = CreateRegion(verteses);

// extrude the region in Z by 10 units
var solid = CreateSolidFromRegion(region, 10d);
于 2019-01-08T12:10:50.587 回答