Well, a couple of ways that I could think of.... In software, you can generate a contour line through the elements of your GeometryArray - tris/quads. The contour line is the locus of points where the signed normal distance of the vertices from the cutting plane is equal to zero. In the case of a sphere, you will get a circle - possibly a great circle depending upon where you cut the sphere.
In "hardware", I think you may be able to use 2 appropriately oriented parallel ModelClip planes to achieve the effect. This would produce a ring actually, but if the distance between the clip planes is small enough it will look like a line contour. Haven't tried it, but looks like it would work. Regards Vaidya >On Wed, 9 Oct 2002 07:50:48 -0700, Scholl, Ed <[EMAIL PROTECTED]> wrote: >Hello- >Can anyone give me some pointers to draw the 2D outline obtained from the >intersection of a cutting plane with my 3D world? i.e. if I specify a >cutting plane that intersects with a sphere, I want to display the resulting >circle. > >-Ed > > ========================================================================== >To unsubscribe, send email to [EMAIL PROTECTED] and include in the body >of the message "signoff JAVA3D-INTEREST". For general help, send email to >[EMAIL PROTECTED] and include in the body of the message "help". =========================================================================== To unsubscribe, send email to [EMAIL PROTECTED] and include in the body of the message "signoff JAVA3D-INTEREST". For general help, send email to [EMAIL PROTECTED] and include in the body of the message "help".
