如何在视口上绘制 brep 实体的边界框？

Question

我想绘制所选实体的边界框。我可以通过逐行绘制来完成它，但是，我看到它提供了 BoundingBox 但我无法让它工作。我不确定如何将 box 添加到 theModel 以便绘制。

 theModel.SelectionChanged += (s, e) =>
             {
                 foreach(var selecteditem in e.AddedItems)
                     if(selecteditem.Item is Entity entity)
                         selectedEntities.Add(entity);

                 foreach (var selecteditem in e.RemovedItems)
                     if (selecteditem.Item is Entity entity)
                         selectedEntities.Remove(entity);

                 foreach(var ent in selectedEntities)
                 {
                     if(ent is Brep brep)
                     {
                         brep = (Brep)ent;
                        var box = new BoundingBox(font, 6666, true, false, brep.BoxMin, brep.BoxMax);
                     }
                 }
                 
                 theModel.Invalidate();
            
             };

Answer 1

BoundingBox class 专为 Model's bounding box settings 而设计。

如何在视口上绘制 brep 实体的边界框？

How to draw the bounding box of a brep entity on viewport?

c#

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