BoroCAD Posted January 10, 2014 Share Posted January 10, 2014 Hi, I'm just starting to learn how to use the 3D environment in AutoCAD (2014 version). I'm following some tutorials but I'm a bit confused regarding direct input values when using the polyline command. Could someone please explain what each step means? I've drawn a 50mm square, starting at coordinate 130,130,0 (lower left corner) using the polyline command (NOT using the Close command to complete the square). The next step then states draw a second polyline using the following input @7 Thanks, BoroCAD Quote Link to comment Share on other sites More sharing options...
ReMark Posted January 10, 2014 Share Posted January 10, 2014 You are instructing AutoCAD to draw a line at a specific length ( @7 ) and angle ( Quote Link to comment Share on other sites More sharing options...
nestly Posted January 10, 2014 Share Posted January 10, 2014 @7 The "@" symbol specifies the coordinate entry will be relative to the last selected point Conversely, the "#" symbol specifies the coordinate entry will be the absolute location relative to 0,0 (in the current coordinate system) The " 130,130,0 (or #130,130) means the point will be 130 units right of 0,0 and 130 units above 0,0 @130,130 means the point will be 130 units to the right of the previously point, and 130 units above the previous point @7 Also keep in mind that polylines can only be drawn (created) on the XY plane, so while they can be useful in a 3D environment, you can't directly draw them into the 3rd dimension. Quote Link to comment Share on other sites More sharing options...
BoroCAD Posted January 10, 2014 Author Share Posted January 10, 2014 As soon as I clicked send I figured out that the ---------------------------------------------------- ReMark - Thanks for the reply though, it helps with my understanding. What does the Quote Link to comment Share on other sites More sharing options...
ReMark Posted January 10, 2014 Share Posted January 10, 2014 I assumed you were working in metric units and therefore a decimal angle, that was not a whole number, would be expressed as 45,55 instead of 45.55 as one would type if they were working in imperial units. My mistake. I should have asked first. Quote Link to comment Share on other sites More sharing options...
BoroCAD Posted January 10, 2014 Author Share Posted January 10, 2014 Nestly - Thanks, I was typing my response above while you were posting. You've given a great explanation, that's brilliant. As stated above I believe it was a typo in the tutorial. I'm going to let the tutor know. Your last line is very interesting and a great piece of knowledge. FYI - I was drawing a simple wire framed shape. Quote Link to comment Share on other sites More sharing options...
steven-g Posted January 10, 2014 Share Posted January 10, 2014 Also keep in mind that polylines can only be drawn (created) on the XY plane, so while they can be useful in a 3D environment, you can't directly draw them into the 3rd dimension. Just a small addendum, a polyline can be started anywhere in 3d space but any subsequent points have to be at the same Z level (or parallel to the UCS) Quote Link to comment Share on other sites More sharing options...
BIGAL Posted January 10, 2014 Share Posted January 10, 2014 Borocad to confuse Pline v's 3dpline accepts 3d points Looking at UNITS 10 10 10 You can also set where angle 0 is relative to we use 0=North Quote Link to comment Share on other sites More sharing options...
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