2D/3D Distance

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  • 2D/3D Distance

    Do anyone have a good explanation of the difference between 2D & 3D distance. I hit the F1 key and read the definition. But maybe it's me or I just not seeing it the way it explains...


    Here's my explanation from a line to a circle

    2D- goes from circle (centroid) to line (centroid) reference in the workplane.
    3D- goes from circle (centroid) straight to line (perpendicular to line) reference into no workplane.
    sigpic

  • #2
    Originally posted by AuRules View Post
    Do anyone have a good explanation of the difference between 2D & 3D distance. I hit the F1 key and read the definition. But maybe it's me or I just not seeing it the way it explains...


    Here's my explanation from a line to a circle

    2D- goes from circle (centroid) to line (centroid) reference in the workplane.
    3D- goes from circle (centroid) straight to line (perpendicular to line) reference into no workplane.
    2-D distance is the shortest distance between 2 points, ONLY using 2 axis, the workplane axis difference is NOT included, basically, projecting the 2 points into the workplane, then getting the distance between them, the old right triangle calculation~ sqrt (x-diff^ + y-diff^2) when in the z workplane.

    3-D distance is the shortest distance between 2 points using all 3 axis, or the definition of the radius of a sphere~ sqrt (x-diff^2 + y-diff^2 + z-diff^2)
    sigpic
    Originally posted by AndersI
    I've got one from September 2006 (bug ticket) which has finally been fixed in 2013.

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    • #3
      The shortest distance between two points is a straight line, in the opposite direction Danny.
      <internet bumper sticker goes here>

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      • #4
        Originally posted by craiger_ny View Post
        The shortest distance between two points is a straight line, in the opposite direction Danny.
        Only in ONE model of the universe though.
        sigpic
        Originally posted by AndersI
        I've got one from September 2006 (bug ticket) which has finally been fixed in 2013.

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        • #5
          It's from a movie..........
          <internet bumper sticker goes here>

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          • #6
            Originally posted by craiger_ny View Post
            It's from a movie..........
            Really?!

            Gee, I WONDER what movie it could be from. I guess I'll have to think about it while I play golf this afternoon.
            (Cinderella kid)
            sigpic
            Originally posted by AndersI
            I've got one from September 2006 (bug ticket) which has finally been fixed in 2013.

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            • #7
              Caddyshack

              Missed Matt's post before sending mine.
              Last edited by John Kingston; 05-16-2007, 07:45 PM. Reason: 'Cause Matt embarrassed me
              When in doubt, post code. A second set of eyes might see something you missed.
              sigpic

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              • #8
                [QUOTE=AuRules;60840]QUOTE]

                Is it smokey in Colombus Ga. from the fires down there????
                sigpicRegards,
                Donald Henger
                B&S Micro Excel Pfx
                3.5mr2 & 3.7mr3
                PHH10MQ, TP20 & TP2
                Country Rocks,But Bluegrass RULES!!!

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                • #9
                  [QUOTE=Don Henger;60905]
                  Originally posted by AuRules View Post
                  QUOTE]

                  Is it smokey in Colombus Ga. from the fires down there????
                  It was smokey here in NC yesterday, but it blew out last night.
                  Links to my utilities for PCDMIS

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                  • #10
                    Originally posted by AuRules View Post
                    Do anyone have a good explanation of the difference between 2D & 3D distance. I hit the F1 key and read the definition. But maybe it's me or I just not seeing it the way it explains...


                    Here's my explanation from a line to a circle

                    2D- goes from circle (centroid) to line (centroid) reference in the workplane.
                    3D- goes from circle (centroid) straight to line (perpendicular to line) reference into no workplane.
                    I believe either 2D or 3D will go centroid to centroid.

                    So, for 2D if you have a circle at 0,0, and a line that runs from 0,4,0 to 2,4,2 and you do a 2d distance in the z-plus workplane between the two you are going to get the distance from 0,0 to 1,4.

                    For 3D, if you have a circle at 0,0,0 and a line that runs from 0,4,0 to 2,4,2 and you do a 3d distance in any workplane between the two you are going to get the distance from 0,0,0 to 1,4,1.

                    Does that make sense?

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                    • #11
                      [QUOTE=Don Henger;60905]
                      Originally posted by AuRules View Post
                      QUOTE]

                      Is it smokey in Colombus Ga. from the fires down there????
                      It was smokey in the Twin Cities on Monday from the fire up on the Canadian border - 250 miles away!

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                      • #12
                        Thanks
                        sigpic

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