【转帖】odgetorusminorradius90
 

odgetorus::minorradius()
odgetorus::minorradius()
i see that odgetorus::minorradius() returns the radius as a negative number. is there some significance to the radius being negative?
thanks,
lowell
major radius
this is normally positive, but it can be negative (and smaller in magnitude than the minor radius) for the inner portion (i.e., a lemon as opposed to an apple).
minor radius
the absolute value of this value specifies the radius of a cross-sectional circle of the ring. if this is negative, then the torus is a void. if this value is 0, then the torus is undefined
thanks, that helps a lot.
does a negative major axis also indicate a flipped surface normal like a negative minor axis does?
lowell
it set isouternormal() to false.
so would it always be safe to use absolute value of the radii and test isouternormal() to see if the torus is a solid or a void?
thanks,
lowell
our realization of isouternormal is
bool odgetorus::isouternormal() const
{
return minorradius() >= 0.;
}
btw : read documentation about reversenormal(), isnormalreversed() too.
i see no documentation about isnormalreversed() of rerversenormal() in header files or the docjet extraction.
where is the dcumentation i should read?
documentations : try download arx documentation from it is only completion of a form required.
are you telling me that the documentation for dwgdirect is contained in the autodesk arx documentation?
i remember that you told me that the dd representation of a cone was different to the arx representation. is that the only difference between the two?
do you mean that there are enough similarities between the two that i might be able to guess better at the meaning things in dwgdirect?
i will look at the arx documentation.
lowell
autodesk arx documentation can help you in some questions. try to read about acgecone.
i haven't others reported defects relating to gecone.
yes thet are similar in general.