Spherical Points and paste with pattern

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  • Spherical Points and paste with pattern

    I have to measure the inside of a large sphere. Is there a way to take spherical radius points? I can't seem to remember how. I measure the sphere with a dozen points, construct a sphere, set XYZ zero to that sphere, then is it possible to paste with pattern a whole bunch of points? I need a very dense point group of hundreds of points and selecting each individually will take forever.

    Thanks.

  • #2
    Paste with pattern works in 2D around the active workplane so if, for example, you had the ZPLUS workplane acive, you could take a row of points in a line going from the top of your sphere (z+) to the bottom (-Z) and then pattern them round by an angular increment to give you the spacing you need. For a row of points every degree you would enter 1 in the "Angle" box and 359 in the "number of times to offset" box. Hope this makes sense?
    Neil Challinor
    PC-DMIS Product Owner

    T: +44 870 446 2667 (Hexagon UK office)
    E: [email protected]

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    • #3
      I'll expand on what Neil said..

      Start of with a point on the bottom, (so lets say your sphere is 20mm and I'll assume it's an internal hemisphere) you could have a point at 0,0,-10 and a vector of 0,0,1

      With the workplane at yminus, you could pattern one spoke (so say an angle of 5° offset 17 times)

      Now change the workplane to Zplus, copy all 18 points and pattern around in z offsetting 5° by 71 times.
      Automettech - Automated Metrology Technology

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      • #4
        Originally posted by NinjaBadger View Post
        I'll expand on what Neil said..

        Start of with a point on the bottom, (so lets say your sphere is 20mm and I'll assume it's an internal hemisphere) you could have a point at 0,0,-10 and a vector of 0,0,1

        With the workplane at yminus, you could pattern one spoke (so say an angle of 5° offset 17 times)

        Now change the workplane to Zplus, copy all 18 points and pattern around in z offsetting 5° by 71 times.
        don't copy the point at dead center for the second PwP, or you'll have 72 (in your example) points at 0,0,-10/
        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
          why not use an auto-sphere?
          Ex-Hex

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          • #6
            I have used multiple perimeter scan, change offset for each
            Then constructed sphere with the scans
            need CAD

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