tailieunhanh - Introduction to AutoCAD 2008 2D and 3D Design phần 2

Ghi chú 1. Những con số được gõ bằng bàn phím xác định các góc của phác thảo trong các ví dụ trên là hai chiều (2D) x, y phối hợp điểm. Khi làm việc trong 2D, tọa độ được thể hiện trong hai số cách nhau bằng dấu phẩy. 2. Điểm phối hợp có thể được hiển thị như là con số tích cực hay tiêu cực. | 26 Introduction to AutoCAD 2008 Notes 1. The figures typed at the keyboard determining the comers of the outlines in the abox e examples are two-dimensional 2D X y coordinate points. When working in 2D coordinates are expressed in terms of two number sseparatedbya comma. 2. Coordinatepointscanbe shownaepoeitive . 3. The of coiisirecLmg moueiiieasrltt mthellril. iwoexam-ples is kitowiiasihaediiohite rooedinate entry method where the X y coordinated aa eadifoi in rot the Ri iikoaie entaredae ihciOHi -mandli neer retiutred. 4. The medihd ol ctdieatcang anoutline asinthe as the ralativeciii. xdmateansrymaihi d-ci i rdmaiep entax d relative to toepaevtoueenteyln relative coordinate entry the @ symbol is enieresZ Zie eexeaehtet ofcoordinvcaswith toefoUowmgrulesm mihdi ve X entry estotherighe ve X entry is rn Lhelelt veyen re ioupevaadx t ve y entty iodownw adds. 5. The next rxamptotthefoertho shows how lines at angles can be drawn taking adrentage yfthe eeletive coordinate entry method. Angles in AutoCAD are measured in 360 degrees in a counter-clockwise anti-clockwiscldiiectiioidag. . dne yumhithtie codet lk . Fig. The counter-clockwise direction of measuring angles in AutoCAD Fourth exampie - Line tool 1. Close the drawing and open a new window. 2. Left-click on theLine tool icon naăeLher figures as follows at each prompt of the command line sequence Comm and Jine dpeciiy fiese potntida ao Specify nddpotnti@dn0 0 Introducing drawing 27 Specify next point @0 -70 Specify next point or Undo @115 225 Specify next point or Undo @-60 0 Specify nextpointo r Closo Undo @115 135 Specify nextpomto r Ck e Undo @0 70 Specify I itj onitor Ckfse Undo c OClose Command The result isasshownin Fid 2-9 Fig. Fourth example - Line tool Fifth example - Line tool Fig. Another method of constructing accurate drawings is by using a method known as in use aseach Specify .