public void AddComplexRegion()
{
Database db = HostApplicationServices.WorkingDatabase;
using (Transaction trans = db.TransactionManager.StartTransaction())
{
//创建一个正六边形
Polyline polygon = new Polyline();
polygon.CreatePolygon(new Point2d(500, 200), 6, 30);
//创建一个圆
Circle circle = new Circle
{
Center = new Point3d(500, 200, 0),
Radius = 10
};
//根据正六边形和圆创建面域
List <Region> regions = RegionTools.CreateRegion(polygon, circle);
if (regions.Count == 0)
{
return; //如果面域创建未成功，则返回
}
//使用LINQ按面积对面域进行排序
List <Region> orderRegions = (from r in regions
orderby r.Area
select r).ToList();
//对面域进行布尔操作，获取正六边形减去圆后的部分
orderRegions[1].BooleanOperation(BooleanOperationType.BoolSubtract, orderRegions[0]);
db.AddToModelSpace(regions[1]); //将上面操作好的面域添加到数据库中
trans.Commit(); //提交更改
}
}
public void AddRegion()
{
Database db = HostApplicationServices.WorkingDatabase;
using (Transaction trans = db.TransactionManager.StartTransaction())
{
//创建一个三角形
Polyline triangle = new Polyline();
triangle.CreatePolygon(new Point2d(550, 200), 3, 30);
//根据三角形创建面域
List <Region> regions = RegionTools.CreateRegion(triangle);
if (regions.Count == 0)
{
return; //如果面域创建未成功，则返回
}
Region region = regions[0];
db.AddToModelSpace(region);//将创建的面域添加到数据库中
//获取面域的质量特性
GetAreaProp(region);
trans.Commit();//提交更改
}
}