DXF码层描述
**** Hidden Message ***** 这在我的笔记中。对不起，我对图层主题的注释非常短（就是这样），并且没有任何进一步阅读的链接。;; LAYER group codes
;;
;; Group codes - Description
;;
;; 100 - Subclass marker (AcDbLayerTableRecord)
;;
;; 2- Layer name
;;
;; 70 - Standard flags (bit-coded values):
;; 1= Layer is frozen; otherwise layer is thawed
;; 2= Layer is frozen by default in new viewports
;; 4= Layer is locked
;; 16 = If set, table entry is externally dependent on an xref
;; 32 = If both this bit and bit 16 are set, the externally
;; dependent xref has been successfully resolved
;; 64 = If set, the table entry was referenced by at least
;; one entity in the drawing the last time the drawing
;; was edited. (This flag is for the benefit of AutoCAD
;; commands. It can be ignored by most programs that
;; read DXF files and need not be set by programs that
;; write DXF files)
;;
;; 62 - Color number (if negative, layer is off)
;;
;; 6 - Linetype name
;;
;; 290 - Plotting flag. If set to 0, do not plot this layer
;;
;; 370 - Lineweight enum value
;;
;; 380 - Ploy Style Name
;;
;; 390 - Hard-pointer ID/handle of PlotStyleName object
(entmake (list
'(0 . "LAYER")
'(100 . "AcDbSymbolTableRecord")
'(100 . "AcDbLayerTableRecord")
(cons 2 "G-Anno-Note") ; layername
(cons 70 0) ; stuff
(cons 62 141); color number
;; (cons 290 ; plot
(cons 6 "Continuous") ;; linetype
(cons 370 050)
;;LAYER LINEWEIGHT
;;this should be an integer representing one of the standard lineweight
;;values multiplied by 100 (i.e. 2.11mm becomes 211). Use -3 to specify the
;;'Default' lineweight.
;; (cons 390 "Normal")
(list -3 (list "AcAecLayerStandard" '(1000 . "") (cons 1000 "This is a description")))
)
) John，
感谢您发布您的笔记。
我可以使用
(entget(tblobjname "LAYER" "LAYERNAME")'("AcAecLayerStandard"))
它将以下内容添加到entgent中。
(-3 ("AcAecLayerStandard" (1000 . "") (1000 . "Sample Description Info"))
我的沼泽搜索技能需要提高。
我发现这是一个参考。
https://www . the swamp . org/index . PHP？谢谢你，马修·h。 一般来说，每当试图确定某个实体的特定数据存储在DXF数据中的什么位置时，我总是建议创建一个具有目标属性的实体(无论是图形的还是非图形的，如图层)，然后使用诸如我的实体列表函数(或相同性质的类似函数)之类的实用程序检查DXF数据。
对于您的情况，您可能会观察到如下数据:
_$ (elist (tblobjname "layer" "0"))
(
(-1 . )
(0 . "LAYER")
(5 . "10")
(102 . "{ACAD_XDICTIONARY")
(360 . )
(102 . "}")
(330 . )
(100 . "AcDbSymbolTableRecord")
(100 . "AcDbLayerTableRecord")
(2 . "0")
(70 . 0)
(62 . 7)
(6 . "Continuous")
(290 . 1)
(370 . -3)
(390 . )
(347 . )
(348 . )
(-3
(
"AcAecLayerStandard"
(1000 . "")
(1000 . "Layer 0 Description")
)
)
)
另请注意，如果图形中尚未注册扩展数据应用程序ID，您可能需要使用
regapp
来注册该ID。
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