虚拟跟踪球技术

虚拟跟踪球技术，vb源代码，很有用AVirtualTrackballandQuaternionPrimerDescription:Thisprogramincludesavirtualtrackballandshowstheprogrammerhowtousequaternionstoimplementnaturalobjectrotationin3-Dgraphics.ThisfilecamefromPlanet-Source-Code.com...thehomemillionsoflinesofsourcecode