Having trouble with simple plane construction

PC-DMIS CAD++ 2020 R1, Romer Arm. I am simply trying to construct a plane coincident to a line and a point. Seems like such a simple thing but I can't make it work. Thank you.

Parents

JEFMAN over 3 years ago

As often, there are different solutions :
You can create a generic point at each end of the line, using LN1.EXYZ and LN1.SXYZ.
Then create the plane with three points.

ASSIGN/V1=LN1.SXYZ
POINT_LN1_1 = GENERIC/POINT,DEPENDENT,CARTESIAN,$
NOM/XYZ,<V1.X,V1.Y,V1.Z>,$
MEAS/XYZ,<V1.X,V1.Y,V1.Z)>,$
NOM/IJK,<0,0,1)>,$
MEAS/IJK,<0,0,1)>,$
ASSIGN/V2=LN1.EXYZ
POINT_LN1_2 = GENERIC/POINT,DEPENDENT,CARTESIAN,$
NOM/XYZ,<V2.X,V2.Y,V2.Z>,$
MEAS/XYZ,<V2.X,V2.Y,V2.Z)>,$
NOM/IJK,<0,0,1)>,$
MEAS/IJK,<0,0,1)>,$

You can also calculate the vector of the plane, with a cross product, and create a generic plane with PNT1 as xyz and V1 as ijk :

ASSIGN/V1=CROSS(LN1.IJK,LN1.XYZ-PNT1.XYZ)
PLN1= GENERIC/PLANE,DEPENDENT,CARTESIAN,$
NOM/XYZ,<PNT1.X,PNT1.Y,PNT1.Z>,$
MEAS/XYZ,<PNT1.X,PNT1.Y,PNT1.Z)>,$
NOM/IJK,<V1.I,V1.J,V1.K)>,$
MEAS/IJK,<V1.I,V1.J,V1.K)>,$

In this case, you should verify if the vector is in the right direction, with an if statement like :

IF DOT(V1,ALIGN.ZAXIS)<0
V1=-V1
END IF

Neil Challinor over 1 year ago in reply to JEFMAN

OR, a much simpler way, since this is a portable user whom I assume has the ability to use pointclouds (COP). Simply create a new COP feature from your line and your point and then construct a BFRE plane from that COP

LIN1       =FEAT/CONTACT/LINE/DEFAULT,CARTESIAN,UNBOUNDED
            THEO/<119.548,1.193,-19.955>,<-0.0000146,1,0.0000212>,<0.8660254,0,0.5>,<-0.5,-0.0000256,0.8660254>,28.602
            ACTL/<119.548,1.193,-19.955>,<-0.0000146,1,0.0000212>,<0.8660254,0,0.5>,<-0.5,-0.0000256,0.8660254>,28.602
            TARG/<119.548,1.193,-19.955>,<-0.0000146,1,0.0000212>,<0.8660254,0,0.5>,<-0.5,-0.0000256,0.8660254>
            SHOW FEATURE PARAMETERS=NO
            SHOW CONTACT PARAMETERS=NO
PNT1       =FEAT/CONTACT/VECTOR POINT/DEFAULT,CARTESIAN
            THEO/<85.135,8.83,-0.008>,<0.0775968,0,0.9969848>
            ACTL/<85.135,8.83,-0.008>,<0.0775968,0,0.9969848>
            TARG/<85.135,8.83,-0.008>,<0.0775968,0,0.9969848>
            SNAP=NO
            SHOW FEATURE PARAMETERS=NO
            SHOW CONTACT PARAMETERS=NO
COP2       =COP/DATA,TOTAL SIZE=6,REDUCED SIZE=6,
            FINDNOMS=NO,REF=LIN1,PNT1,,
PLN5       =FEAT/PLANE,CARTESIAN,TRIANGLE,NO,LEAST_SQR
            THEO/<114.189,14.383,-18.074>,<0.5280405,-0.000018,0.8492192>
            ACTL/<114.646,14.383,-18.074>,<0.5221125,-0.0000105,0.8528767>
            CONSTR/PLANE,BFRE,COP2,,
            OUTLIER_REMOVAL/OFF,3
            FILTER/OFF,WAVELENGTH=0

Reply

Neil Challinor over 1 year ago in reply to JEFMAN

LIN1       =FEAT/CONTACT/LINE/DEFAULT,CARTESIAN,UNBOUNDED
            THEO/<119.548,1.193,-19.955>,<-0.0000146,1,0.0000212>,<0.8660254,0,0.5>,<-0.5,-0.0000256,0.8660254>,28.602
            ACTL/<119.548,1.193,-19.955>,<-0.0000146,1,0.0000212>,<0.8660254,0,0.5>,<-0.5,-0.0000256,0.8660254>,28.602
            TARG/<119.548,1.193,-19.955>,<-0.0000146,1,0.0000212>,<0.8660254,0,0.5>,<-0.5,-0.0000256,0.8660254>
            SHOW FEATURE PARAMETERS=NO
            SHOW CONTACT PARAMETERS=NO
PNT1       =FEAT/CONTACT/VECTOR POINT/DEFAULT,CARTESIAN
            THEO/<85.135,8.83,-0.008>,<0.0775968,0,0.9969848>
            ACTL/<85.135,8.83,-0.008>,<0.0775968,0,0.9969848>
            TARG/<85.135,8.83,-0.008>,<0.0775968,0,0.9969848>
            SNAP=NO
            SHOW FEATURE PARAMETERS=NO
            SHOW CONTACT PARAMETERS=NO
COP2       =COP/DATA,TOTAL SIZE=6,REDUCED SIZE=6,
            FINDNOMS=NO,REF=LIN1,PNT1,,
PLN5       =FEAT/PLANE,CARTESIAN,TRIANGLE,NO,LEAST_SQR
            THEO/<114.189,14.383,-18.074>,<0.5280405,-0.000018,0.8492192>
            ACTL/<114.646,14.383,-18.074>,<0.5221125,-0.0000105,0.8528767>
            CONSTR/PLANE,BFRE,COP2,,
            OUTLIER_REMOVAL/OFF,3
            FILTER/OFF,WAVELENGTH=0

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