Sorry for the beginner's question, but I need to mix length units and I do not know how...

jacques_blain

i.e. I would like to say

        const VNSpindleBearingOD is string     = "SpindleBearingOD";
        const SpindleBearingOD      is number = 3.15; // this value is in inch
        const VNSpindleBearingOD is string     = "SpindleBearingID";
        const SpindleBearingID       is number  = 80; // This value is in mm
       
        verifyVariableName (VNSpindleBearingOD);
        setVariable(context, VNBearingSpindleOD, SpindleBearingOD); // By default my project is in inch so this will be OK

        verifyVariableName (VNSpindleBearingID);
        setVariable(context, VNBearingSpindleID, SpindleBearingID); // !!!>>> But this will be interpreted as inch, instead of mm

Any help will be greatly appreciated

ilya_baran

The way to mix units in FS is to use *lengths* (and other quantities with units, collectively called ValueWithUnits) instead of numbers (which are unitless).
So if you write
const SpindleBearingOD is ValueWithUnits = 3.15 * inch;
const SpindleBearingID is ValueWithUnits  = 80 * millimeter;
they will be interpreted as the correct lengths.  You can also add them, subtract them, etc.  Keep in mind that a length remembers that it's a length but not what units it was originally defined with (so you get *exactly* same value from 2.54 * centimeter as from inch).

ilya_baran

The way to mix units in FS is to use *lengths* (and other quantities with units, collectively called ValueWithUnits) instead of numbers (which are unitless).
So if you write
const SpindleBearingOD is ValueWithUnits = 3.15 * inch;
const SpindleBearingID is ValueWithUnits  = 80 * millimeter;
they will be interpreted as the correct lengths.  You can also add them, subtract them, etc.  Keep in mind that a length remembers that it's a length but not what units it was originally defined with (so you get *exactly* same value from 2.54 * centimeter as from inch).

jacques_blain

Thank you very much Ilya, have a nice day