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4x common zone planes as datum

pcdmisstudent
hi guys
i just need to double check on u guys how u would measure this plane and level to it.
so its 4x planes with CZ (they are on same level to no need to do any offsets)
i measure the 4x planes as autoplanes
select the 4 planes in construct planes dialog and construct a bestfit plane
construct another plane using the BF plane, now i construct a "primary" plane with bfre and minmax option
and align to primary plane.

is this correct?
how would u guys do it
  • Create your 4 planes as normal autoplanes. Create a set and select all 4 planes. In the edit mode go to the line in the set that starts with "CONSTR/SET," and change the name of the plane i.e. pln1 to "pln1.hit[1..pln1.numhits]". This is an array of points extracted from that feature. i.e. in the case of my example I had 4 points per plane, so "pln1.numhits" = 4, so the array is "pln1.hit[1..4]", which tells PCDMIS to use pln1.hit[1], pln1.hit[2], pln1.hit[3] and pln1.hit[4]. Continue renaming the planes in the set to match. Then make a constructed plane using that set feature as the input. 


    PLN1       =FEAT/CONTACT/PLANE/DEFAULT,CARTESIAN,OUTLINE,LEAST_SQR
            THEO/<-2,2,0>,<0,0,1>
            ACTL/<-2,2,0>,<0,0,1>
            TARG/<-2,2,0>,<0,0,1>
            ANGLE VEC=<0,1,0>,SQUARE
            SHOW FEATURE PARAMETERS=NO
            SHOW CONTACT PARAMETERS=NO
PLN2       =FEAT/CONTACT/PLANE/DEFAULT,CARTESIAN,OUTLINE,LEAST_SQR
            THEO/<2,2,0>,<0,0,1>
            ACTL/<2,2,0>,<0,0,1>
            TARG/<2,2,0>,<0,0,1>
            ANGLE VEC=<0,1,0>,SQUARE
            SHOW FEATURE PARAMETERS=NO
            SHOW CONTACT PARAMETERS=NO
PLN3       =FEAT/CONTACT/PLANE/DEFAULT,CARTESIAN,OUTLINE,LEAST_SQR
            THEO/<2,-2,0>,<0,0,1>
            ACTL/<2,-2,0>,<0,0,1>
            TARG/<2,-2,0>,<0,0,1>
            ANGLE VEC=<0,1,0>,SQUARE
            SHOW FEATURE PARAMETERS=NO
            SHOW CONTACT PARAMETERS=NO
PLN4       =FEAT/CONTACT/PLANE/DEFAULT,CARTESIAN,OUTLINE,LEAST_SQR
            THEO/<-2,-2,0>,<0,0,1>
            ACTL/<-2,-2,0>,<0,0,1>
            TARG/<-2,-2,0>,<0,0,1>
            ANGLE VEC=<0,1,0>,SQUARE
            SHOW FEATURE PARAMETERS=NO
            SHOW CONTACT PARAMETERS=NO
SCN1       =FEAT/SET,CARTESIAN
            THEO/<0,0,0>,<0,0,1>
            ACTL/<0,0,0>,<0,0,1>
            CONSTR/SET,BASIC,PLN1.HIT[1..PLN1.NUMHITS],PLN2.HIT[1..PLN2.NUMHITS],PLN3.HIT[1..PLN3.NUMHITS],PLN4.HIT[1..PLN4.NUMHITS],,
DATUM_PLN  =FEAT/PLANE,CARTESIAN,OUTLINE,NO
            THEO/<0,0,0>,<0,0,1>
            ACTL/<0,0,0>,<0,0,1>
            CONSTR/PLANE,BF,SCN1,,
            OUTLIER_REMOVAL/OFF,3
            FILTER/OFF,WAVELENGTH=0
  • in reply to ctw00
    ...or just reference the PLN1.HIT[1..PLN1.NUMHITS] etc. in the constructed plane, no need to create a group first (unless you want to). 

    DATUM_PLN  =FEAT/PLANE,CARTESIAN,OUTLINE,NO
            THEO/<0,0,0>,<0,0,1>
            ACTL/<0,0,0>,<0,0,1>
            CONSTR/PLANE,BF,PLN1.HIT[1..PLN1.NUMHITS],PLN2.HIT[1..PLN2.NUMHITS],PLN3.HIT[1..PLN3.NUMHITS],PLN4.HIT[1..PLN4.NUMHITS],,
            OUTLIER_REMOVAL/OFF,3
            FILTER/OFF,WAVELENGTH=0
  • No need to measure 4 individual planes unless there are reasons for that such as individual flatness areas for each zone, i would just measure all 4 areas as 1 plane no constructions needed.
  • in reply to ctw00
    So long as the center of at least 3 of the planes aren't coincident that will work. I posted the answer with a constructed set knowing it would work in all cases. If someone searching for an answer tomorrow only has 2 planes and needs a solution, the above will work.
  • I would simply measure individual points on all 4, then construct up to 5 planes, one that includes them all, then the 4 individual planes if needed. This will let you dimension each single point and thus give you numbers to make adjustments with to get them all 'flat'.
  • in reply to Matthew D. Hoedeman
    matthew, how come u always has the best answers?
  • Does point cloud do the same thing as num hits??
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