java3d教程

1、介紹Java3DisanadditiontoJavafdisplayingthreedimensionalgraphics.ProgramswritteninJava3Dcanberunonseveraldifferenttypesofcomputerovertheinter.Java3D是為Java顯示三維圖形的附加部分。以Java3D寫成的程序可以在若干不同類型的計算機或經(jīng)由互聯(lián)網(wǎng)運行。TheJava3Dclasslibrarypr

2、ovidesasimplerinterfacethanmostothergraphicslibrariesbuthasenoughcapabilitiestoproducegoodgamesanimation.Java3DbuildsonexistingtechnologysuchasDirectXOpenGLsotheprogramsdonotrunasslowlyasyoumightexpect.AlsoJava3Dcanincpa

3、teobjectscreatedby3DmodelingpackageslikeTrueSpaceVRMLmodels.Java3D類庫提供了比大多數(shù)其他圖形庫都更為簡單的接口，但也足以生成很好的游戲和動畫。Java3D建立在現(xiàn)有的技術(shù)，如DirectX和OpenGL之上，因此程序運行起來并非如你所預期的那樣慢。除此之外，Java3D還可以與3D模型化包，如TrueSpace和VRML模型創(chuàng)建的對象實現(xiàn)協(xié)作。Thistutialisan

4、introductiontoJava3D.Examplesleadyouthroughthebasicmethodsfproducing3Dimagesanimation.Youdonotneedtohaveanyknowledgeof3DgraphicsJava3DtolearnfromthistutialbutitwillhelpifyouhaveabasicunderstingoftheJavaprogramminglanguag

5、e.Programminginthreedimensionscanseemcomplicatedbecauseoftheamountofjargonthemathematicsinvolvedthistutialwillkeepthingsassimpleaspossible.本教程是對Java3D的介紹。包括了引導你完成產(chǎn)生3D圖形和動畫的基本方法的實例。學習本教程，你不需要具有任何3D圖形或Java3D的知識，不過對于Java編程語

6、言的基本認知將有助于你的學習。由于大量術(shù)語和算術(shù)運算的存在，三維編程可能看上去很復雜，但本教程將盡量讓所有的事情保持簡單。Pleasehelptoimprovethistutialffuturereadersbyreptinganymistakesyoufindsuggestingimprovementsto.為了幫助改進本教程以便于將來的讀者的學習，請在你發(fā)現(xiàn)任何問題或想到了改進的建議的時候發(fā)信給。InstallingRunningJ

7、ava3D安裝和運行Java3DThesoftwareyouneedtouseJava3DisavailablefreefromSunMicrosystemsat:java..你要使用到的Java3D軟件可以免費從SunMicrosystems獲得，網(wǎng)址是：:java.（譯注：Sun公司已經(jīng)被acle吞并，Java3D目前的開發(fā)網(wǎng)站為：:java3d.dev.）。Sunoftenreleasesnewversionssoitisbett

8、ertolookattheirsitethanrelyonthisdocumenttofindwhatyouneed.Youwillhavetoregisterasamemberof“JavaDeveloperConnection“todownloadsomeofthefiles.Sun經(jīng)常會發(fā)布新的版本，因此最好是能夠找一找他們的網(wǎng)站而非依賴于這篇文檔去獲得看一下Hello3d()構(gòu)造器，你會發(fā)現(xiàn)其中的五行代碼分別處理了以上的步驟。程

9、序顯示了一個灼熱的立方體，而視角正直直地對著立方體紅色的面上，因此你實際看到的是背景上的紅色正方形。imptcom.sun.j3d.utils.universe.SimpleUniverseimptcom.sun.j3d.utils.geometry.ColCubeimptjavax.media.j3d.BranchGrouppublicclassHello3dpublicHello3d()SimpleUniverseuniverse=

10、newSimpleUniverse()BranchGroupgroup=newBranchGroup()group.addChild(newColCube(0.3))universe.getViewingPlatfm().setNominalViewingTransfm()universe.addBranchGraph(group)publicstaticvoidmain(String[]args)newHello3d()endofcl

11、assHello3dimptcom.sun.j3d.utils.universe.SimpleUniverseimptcom.sun.j3d.utils.geometry.ColCubeimptjavax.media.j3d.BranchGrouppublicclassHello3dpublicHello3d()SimpleUniverseuniverse=newSimpleUniverse()BranchGroupgroup=newB

12、ranchGroup()group.addChild(newColCube(0.3))universe.getViewingPlatfm().setNominalViewingTransfm()universe.addBranchGraph(group)publicstaticvoidmain(String[]args)newHello3d()Hello3d類結(jié)束Theimptstatementsatthebeginningofthis

13、programusevariouspartsofJava3DsocompilingrunningthisprogramisagoodtestthatyouhaveinstalledJava3Dcrectly.程序最初的引用語句使用了Java3D的多個部分，因此編譯和執(zhí)行這個程序是對你正確安裝了Java3D的有效測試。點亮世界OKthefirstexamplewasagoodstartbutwasit3DIfyoudontthinkasq