删除矩形内的所有实体

如何删除矩形内的所有实体

问题： 如何删除矩形内的所有实体 (CADNET-1351)。

提示： 这需要获取所有实体，然后为它们找到一个矩形，然后检查实体是否在你想要的矩形内，并删除它。

示例：

cadImage.GetBounds();

foreach (CadBaseEntity entity in cadImage.Entities)
{
  if (entity.TypeName == CadEntityTypeName.TEXT)
  {
    System.Console.WriteLine(entity.Bounds[0].X + " " + entity.Bounds[0].Y + "  " + entity.Bounds[0].Z + " " + entity.Bounds[1].X + " " + entity.Bounds[1].Y + " " + entity.Bounds[1].Z);
  }
}

DeleteAllEntities(cadImage, new Rect(new PointF(77, 29), new PointF(128, 49)));

private static void DeleteAllEntities(CadImage cadImage, Rect rectangle)
{
    foreach (CadBaseEntity baseEntity in cadImage.Entities)
    {
        if (baseEntity.LayerName != "0")
        {
            continue;
        }

        if (baseEntity.SpaceMode != CadEntitySpaceMode.ModelSpace)
        {
            continue;
        }

        List<Cad3DPoint> entityBounds = baseEntity.Bounds;

        PointF minPoint = new PointF((float)entityBounds[0].X, (float)entityBounds[0].Y);
        PointF maxPoint = new PointF((float)entityBounds[1].X, (float)entityBounds[1].Y);


        Rect entityRect = new Rect(minPoint, maxPoint);


        if (rectangle.Contains(entityRect))
        {
            cadImage.RemoveEntity(baseEntity);
        }
    }
}

private class Rect
{
    public PointF Min;
    public PointF Max;

    public Rect(PointF min, PointF max)
    {
        this.Min = min;
        this.Max = max;
    }

    public bool Contains(Rect rect)
    {
        return this.Min.X <= rect.Min.X && this.Max.X >= rect.Max.X && this.Min.Y <= rect.Min.Y
               && this.Max.Y >= rect.Max.Y;
    }
}