How to Draw Irregular Shapes in Autocad

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How to draw irregular shape

Author	Message  Topic Search Topic Options
wtojp2013 Members Profile Find Members Posts Newbie Joined: 21.Oct.2013 Location: Hong Kong Using: autocad Status: Offline Points: 8	Topic: How to draw irregular shape     Posted: 02.Apr.2014 at 06:26
	Hi guys, According to the provided  information. How can I draw the shape ? Thank you. Edwin
philippe JOSEPH Members Profile Find Members Posts Senior Member Joined: 14.Mar.2011 Location: France Using: AutoCAD Mechanical 2017 Status: Offline Points: 1330	Posted: 02.Apr.2014 at 08:03
	Hello wtojp2013, I supose that this is exactly a "parametric constrains" test for you. I don't know all about this but having tried it, it looks like you have to deal with a formula inside it. I have done a file with constraints, can we see yours before ? Edited by philippe JOSEPH - 02.Apr.2014 at 10:50
Kent Cooper Members Profile Find Members Posts Senior Member Joined: 12.Mar.2013 Location: United States Using: AutoCAD2019 Status: Offline Points: 549	Posted: 02.Apr.2014 at 15:12
	This certainly doesn't do the whole thing for you, but it might give you something to start from: http://forums.autodesk.com/t5/Visual-LISP-AutoLISP-and-General/Polygon-from-distance-between-point/m-p/4436825#M315139
philippe JOSEPH Members Profile Find Members Posts Senior Member Joined: 14.Mar.2011 Location: France Using: AutoCAD Mechanical 2017 Status: Offline Points: 1330	Posted: 02.Apr.2014 at 15:47
	Hello Kent and wtojp2013. I have uploaded my test : SHAPE_01_A.dwg ( no chance with upload here ). I'm not sure of it 100% because I don't know much about parametric constrain but I'm afraid that it did work with nearly 2 clics with AUTOCONSTRAIN. Maybe some parametric constrain specialst ( if exists ) could take a look and criticize it. Edited by philippe JOSEPH - 02.Apr.2014 at 15:49
dylhunter Members Profile Find Members Posts Newbie Joined: 25.Mar.2014 Location: China Using: AutoCAD2010 Status: Offline Points: 10	Posted: 02.Apr.2014 at 19:00
	Hope it's helpful for you. Thanks,
philippe JOSEPH Members Profile Find Members Posts Senior Member Joined: 14.Mar.2011 Location: France Using: AutoCAD Mechanical 2017 Status: Offline Points: 1330	Posted: 02.Apr.2014 at 20:13
	Hello dylhunter, your solution looks so simple that you could even go from step 2 to step 6 directly. Edited by philippe JOSEPH - 02.Apr.2014 at 20:57
dylhunter Members Profile Find Members Posts Newbie Joined: 25.Mar.2014 Location: China Using: AutoCAD2010 Status: Offline Points: 10	Posted: 02.Apr.2014 at 22:17
	Yes. I just want to show the track of the end point. Actually, we can copy the dia. 22 circle to the end point of red line at step 3. then copy one red line to the intersection point. Done.
dylhunter Members Profile Find Members Posts Newbie Joined: 25.Mar.2014 Location: China Using: AutoCAD2010 Status: Offline Points: 10	Posted: 02.Apr.2014 at 22:20
	Sorry. Should be the rad. 20 circle. Not dia. 22 circle.
wtojp2013 Members Profile Find Members Posts Newbie Joined: 21.Oct.2013 Location: Hong Kong Using: autocad Status: Offline Points: 8	Posted: 03.Apr.2014 at 05:38
	dylhunter, Thank you very much. This technique is very useful for me.
philippe JOSEPH Members Profile Find Members Posts Senior Member Joined: 14.Mar.2011 Location: France Using: AutoCAD Mechanical 2017 Status: Offline Points: 1330	Posted: 03.Apr.2014 at 07:51
	dylhunter and wtojp2013, I'd say that wtojp2013 and my method work the same in 2 steps. wtojp2013 is purely geometry and works 100% without any problem. It should be prefered to mine but if not applicable to a purely geometrical solution you could test it ( see the file : SHAPE_01_A.dwg in the AutCAD blocks library and tell me about it ).

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