cad随层bylayer随块byblock详解（CAD随层-随块详解从未改变）

cad随层bylayer随块byblock详解（CAD随层-随块详解从未改变）
In the 1 and CAD2004 object properties, what does ByLayer mean with the layer "ByBlock" and "block"?
1) bylayer is an English phrase, meaning "following the layer". Use of CAD drawing, a very important feature is the layer, tongsudejiang, like a layer of overlap in the transparent paper together, a transparent paper is a layer, we will be drawing graphics on transparent paper, graphics or different graphical elements can be drawn in different layers (if you like). The layer contains many features, such as line type, color, line thickness, print style, and so on, which can be set by layer manager. When drawing the graphic elements, if the graphic elements type, color, thickness, print style specified as bylayer, graphic elements painted with characteristics of the layer set, of course, you can also specify the graphic elements for other characteristics, it is designated as type except bylayer.
2) for example assumes that the JMD layer, color is red, a color line of the layer is bylayer, then the line color is red, but also with the JMD layer of color change; if it is set to byblock, the color is white, does not have any relationship with the color change.
3) that is, the line and color of the layer you are currently selecting is the initial line and color of the bylayer. Byblock same solution.
4) by layer according to the layer mean, by block is based on the block mean. I understand this, for example, a block, select
it, if the color or line width is set to "by layer", the characteristics of it with the color and width of the layer where (in advance set the Layer Properties Manager in); if set to "by block", and its characteristics will set in the block in (on the block editor can see).
Of course, if it is for a normal line (non block), it is the same as "by layer" or "by block" because there is no block
5) bylayer: if you select bylayer, color graphics, and the properties of layer manager settings like byblock: This applies only to the block, if the block elements in byblock, then the selected elements of color, nature and block layer is
6) bylayer determines the attributes of the object by the attributes of the object's layer; byblock determines the attributes of the object by the attributes of the block in which the object is located. For example, when you draw a rectangle, you have drawn three lines, their line width is 1, and the line width is 0. When you are byblock, the line width of fourth lines you draw is 1, and the line you draw at bylayer is 0
I- first briefly explain the two concepts:
Byblock: with blocks, that means object properties use the attributes of the blocks they are in".
Typically, this property is set only if a graphical object is to be made into blocks. When the graphical object is set to Byblock and defined as a block, we can directly adjust the attributes of the block, and the object properties set to the
Byblock property change following the block settings. If the graphic object property is set to Byblock but is not defined as a block, the object will use the default property, the color is white, the line width is 0, and the line is solid. If the attributes of the graph within the block are not set to Byblock, the attributes of the block are adjusted, so that these objects keep the original property. For example, suppose the color of a circle is set to red, and then the circle is defined as a block. At this point, the color of the block is adjusted to green, and the circle is still red.
Bylayer: "layer by layer" means that the object property uses the properties of the layer it is in".
The default object of an object is the following layer, because the layer is used as an efficient tool for managing graphics, usually placing many of the same type of graphics on a layer, and it is more convenient to use layers to control the properties of a graphical object. So the usual way is to set the layer according to the needs of the drawing and printing, and set the color, line shape, line width and print of the layers,
It's OK to put the graphics on the right layer when you're drawing.
If the graphics are simple, without a layer, or on the same layer, you want to distinguish the print effect from the display, and each object can be individually set with color, line type, and line width.
With the layer is relatively simple, that is, graphics, whether in the independent or in the block, are consistent with the graphics layer.
The independent object layer can be seen at a glance. The layer in the block object is associated with the block definition, the graph layer, and the block reference layer inserted. This is a little more complicated. If the graphics object in the 0 layer, defined as block after block, which is inserted into the layer, in which the graphic object layer; if the graphic object is not in the 0 layer, defined as block after block into which both the agenda, graphic objects still he that layer. It's easy to make this relationship clear. First, set up two new layers, set the layer 1 to red, and set the layer 2 to green, then draw a circle on the 0 and 1 layers, and the properties are directly using the default Bylayer. Select two circles and create a block. Insert this block on three layers respectively. You can see that the circle on the original layer 1 is always red, and the circle on the 0 layer uses the color of the current layer.
If the property is set within a block object into Byblock, and the attribute block is set to Bylayer, the layer within a block object properties will change with the block insertion, we can directly modify the attribute attribute block to control block object. If a block object property is set as a layer or other fixed attribute, the attributes of the block are adjusted without any impact on the object within the block.
Figuring out how Byblock and Bylayer might affect object properties, you should know when to choose what settings. More CAD skills, knowledge in the experience below AutoCAD video
tutorial complete.。