cad中的图层有什么用?
书上的我看不懂。请跟我解释一下。
推荐回答(5个)
CAD中的图层可以快速的查看在某一图层上的图形;图层可以控制这一图层的图形是否打印;图层可以在不同图层中设置不同的线形,线宽以及颜色等。
1、电脑打开CAD软件。
![](/picurl?url=https%3A%2F%2Fiknow-pic.cdn.bcebos.com%2Fb2de9c82d158ccbfc8bc779f17d8bc3eb1354117%3Fx-bce-process%3Dimage%252Fresize%252Cm_lfit%252Cw_600%252Ch_800%252Climit_1%252Fquality%252Cq_85%252Fformat%252Cf_auto)
2、打开CAD之后,点击工具栏中的图层。
![](/picurl?url=https%3A%2F%2Fiknow-pic.cdn.bcebos.com%2Fae51f3deb48f8c541aaa078a34292df5e0fe7f1e%3Fx-bce-process%3Dimage%252Fresize%252Cm_lfit%252Cw_600%252Ch_800%252Climit_1%252Fquality%252Cq_85%252Fformat%252Cf_auto)
3、进入图层页面,点击打印机可以控制这一图层是否打印。
![](/picurl?url=https%3A%2F%2Fiknow-pic.cdn.bcebos.com%2F50da81cb39dbb6fd840e27830724ab18972b373a%3Fx-bce-process%3Dimage%252Fresize%252Cm_lfit%252Cw_600%252Ch_800%252Climit_1%252Fquality%252Cq_85%252Fformat%252Cf_auto)
4、点击某一图层就可以设置这一图层的线宽,线型或者颜色都可以单独设置。
![](/picurl?url=https%3A%2F%2Fiknow-pic.cdn.bcebos.com%2Fb7003af33a87e9506c5231c91e385343faf2b4ca%3Fx-bce-process%3Dimage%252Fresize%252Cm_lfit%252Cw_600%252Ch_800%252Climit_1%252Fquality%252Cq_85%252Fformat%252Cf_auto)
在平面和工程设计软件中,几乎有图层这个东西,所以,它肯定有很高存在的价值.
图层有什么用?从我来看,有这么几点:
1.控制图形的显示,比如一张房子建筑平面图,我可以把家俱,电气.进排水,暧通等全部画在一张图的不同图层里,这样我要打印时就可以通过控制图层的显示与否来打某张需要的图纸.
2.控制图形的修改,我可以把某个图层锁住,那我在改图的时候就不用担心动了不该动的东西了.
3.图层可以设定颜色,线型,线宽.这就给我们很大的方便,比如说画机械图,可以设这样几个图层
实体(粗实线.黑色)
标注(细实线,绿色)
不可见线(细虚线,黑色)
中心线(细点划线,红色)
剖面(细实线,黄色)
这样我们就可以在不同的图层画不不同的东西.而不必一个个去设置这些特性了.
如果想真正学好CAD,图层是必须学好的。
但它并不复杂,简单地说,它的层就像是一张一张透明的幻灯片,建一个层就像是画一个幻灯片,然后将它们叠在一起。
一个层可以定义一种线型,一种颜色,一种线宽等。
比如你画一条螺栓是的是A层,标注是用的B层,那么当你选择了A层就是选择了螺栓,你修改层的颜色时螺栓的颜色也会变。
又如你在N个地方都用A层画了图,当你选择它们时只用选择A层,这样所有的用A层画的图象都被选择了。
好了,我就说这么多,算是抛砖引玉。
CAD我只是略懂皮毛而已。
其实CAD的图层和PS、FLASH的图层我认为作用上大体是一致的。打个比喻就是一张张透明的胶片叠在一起,分别在每张上作画。
CAD的图层一般区分不同的元素。锁定操作、防止误操作、单独显示等。
举个例子,我作过一个立体的房屋,一层层作的,里面如果分房间,门、楼梯都有。分层制作的,每层一个图层,每层的地板也单独作一层。全部显示的话。就是整幢完整的房子。把二、三楼及各层地板隐藏就能看清里面的结构(房间如何布局等)。
另外,常见的如建筑图纸等,分层更细。中线、墙体、标线啊等。全用不同层、不同的颜色分开。如天正建筑软件,自动分的。
你好,CAD中的图层在编辑复杂的图形时候作用很大,比如画模具图的时候你可以把模架放一个层,顶杆放一个层,模芯放一个层,层是可以关闭显示或者冻结的,这样编辑图形就很方便
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