我正在尝试使用Eyeshot在autodesk naviswork上创建导航网格。
使用Solid.FromTriangles()创建实体后,将顶点和IndexTriangle转换为顶点三角形。
var solidList = new List();
var Solid = Solid.FromTriangles(item.vertices, item.triangles);但我认为它不适用于布尔运算符。
所以我想要提取区域来使用布尔运算符。
如何将面域提取到网格或实体(或顶点三角形)?
发布于 2019-01-08 20:10:51
这很容易做到。你必须确保你的区域vertese是排序的,否则你可能会遇到一些问题,但这只是一个简单的参数。如果形状不是中空的,下面是一个例子:
// 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);
}一个从vertese创建10 x 10 x 10的立方体的简单示例(有更简单的方法来创建立方体,但为了简单起见,我将创建一个立方体)
// 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);https://stackoverflow.com/questions/54088008
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