Xfig Tutorial
xfig繪出向量圖形，而非是點陣圖，一直都不會，所以將過程記錄起來。
Mouse usage
滑鼠3鍵分屬不同的功能，左鍵(鍵1)，中鍵(鍵2)，右鍵(鍵3)。繪製Box
按鍵1(corner point)移到要的位置，再按鍵1(final point)，如果在Fill Style有設定，則此Box會填入色彩。但這樣的Box並不能轉角度，如果要作出轉角度的Box，就要用POLYGON
選定作出的box後，Update可將Fill Style中所設定的顏色，填入box中。
Click mouse button 1 (`corner point') at any corner of the rectangular box, and click mouse button 1 (`final point') again at the opposite corner.If area fill is specified by FILL STYLE, the box will be filled according to the setting.
A box created with this function can't be rotated by an arbitrary angle, only by multiples of 90 degrees. To create an arbitrarily rotatable rectangular box, you should use POLYGON (it may be easier to create non-rotated rectangle first and then rotate it by ROTATE). You may also use REGULAR POLYGON to create a rotated square.
Compound Objects
鍵1(tag object)選定物件，鍵2(tag region)拉出一個涵蓋所要物件的Box，鍵3(compound tag)完成
Glue selected objects and make them a COMPOUND object.
This is useful to move or copy some objects together at the same time. It is also possible to scale part of a figure by scaling a COMPOUND object after making part of the figure COMPOUND.
Clicking on an object with mouse button 1 (`tag object') will tag the object. Clicking one corner of a rectangular region with mouse button 2 (`tag region') and then clicking mouse button 2 (`final corner') again at the opposite corner of the rectangular region will tag all objects inside the region. After tagging all objects to be glued into a COMPOUND object, clicking mouse button 3 (`compound tagged') will glue those objects and make them a COMPOUND object.
If an already tagged object is selected by mouse button 1 or mouse button 2, that object will be untagged. If you want to remove all tags, change the mode temporarily to any other mode (e.g. "move object") except BREAK COMPOUND. The COMPOUND object may be separated into component objects by BREAK COMPOUND.
Copy object
鍵1(copy object)選擇要複製的物件，移動到適當的地方，再按鍵1(place object)系統會自動貼上物件，完成複製。
Select the object to be copied by clicking the object with mouse button 1 (`copy object'), and finish the copy operation by clicking mouse button 1 (`place object') again at the position to place the copy. If you want to restrict the movement to horizontal or vertical, use mouse button 2 (`horiz/vert copy') instead of mouse button 1. The operation may be canceled by clicking mouse button 3 (`cancel') in either case.
If you want to copy several objects at the same time, you may put them a COMPOUND object using GLUE COMPOUND.
By setting SMART-LINKS MODE, it is possible to copy the lines which touch the object as you move the object itself. This only works with POLYLINES (not splines) touching a BOX or ARC-BOX. It is also possible to make many copies in this mode, using ARRAY PLACEMENT. To do this, first set the number of copies to be created by setting NUMBER OF X COPIES and NUMBER OF Y COPIES. Then select the object to be copied by clicking the object with mouse button 1 (`copy object') or 2 (`constrained copy'), and specify the direction and distance to place the copies by clicking mouse button 2 (`array placement') after moving the mouse. Normally, objects will be placed on the array of NUMBER OF X COPIES and NUMBER OF Y COPIES, but when either of them is set 0 or 1, copies of specified number will be generated and they can be placed obliquely. For example, if the number of X copies is 3 and the number of Y copies is 0 or 1, the copied objects will be placed along the X direction at the same Y position as the original object.
Clicking an object with mouse button 3 (`copy to cut buf') will copy the object to the xfig cut buffer. The object copied into the xfig cut buffer may be inserted into the figure on the canvas using Paste Objects. This allows you to copy part of a figure to another figure. Any object in the xfig cut buffer will be overwritten when the new object is copied into the xfig cut buffer. To copy multiple objects into the xfig cut buffer, you must first put them into a COMPOUND object using GLUE COMPOUND.
Resources
