/**-------------------------------------------------代碼區--------------------------------------------------------**/
import java.applet.Applet;
import java.awt.BorderLayout;
import java.awt.GraphicsConfiguration;
import java.awt.event.MouseEvent;
import java.awt.event.MouseListener;
import java.awt.event.MouseWheelEvent;
import java.awt.event.MouseWheelListener;
import com.sun.j3d.loaders.Scene;
import com.sun.j3d.utils.applet.MainFrame;
import com.sun.j3d.utils.behaviors.mouse.*;
import com.sun.j3d.utils.pickfast.behaviors.PickRotateBehavior;
import com.sun.j3d.utils.pickfast.behaviors.PickTranslateBehavior;
import com.sun.j3d.utils.pickfast.behaviors.PickZoomBehavior;
import com.sun.j3d.utils.universe.SimpleUniverse;
import com.sun.javax.media.j3d.*;
import com.sun.javax.vecmath.*;
import com.microcrowd.loader.java3d.max3ds.Loader3DS;
/**
* 3DMax文件加載測試
* @author luo
*
*/
public class M3DMax3dsfileLoader extends Applet {
BranchGroup scenceBranchGroupRoot =null;
BoundingSphere bounds=null;
TransformGroup sceneTG=null;
TransformGroup objTG=null;
Transform3D t3d1 =null;
TransformGroup tg1=null;
BranchGroup loaderBG =null;
public M3DMax3dsfileLoader(){
this.setLayout(new BorderLayout());
GraphicsConfiguration gc = SimpleUniverse.getPreferredConfiguration();
Canvas3D canvas = new Canvas3D(gc);
this.add("Center",canvas);
//this.addMouseWheelListener(this);
BranchGroup scence = createScenceGraph(canvas);
SimpleUniverse u = new SimpleUniverse(canvas);
u.getViewingPlatform().setNominalViewingTransform();
u.addBranchGraph(scence);
}
/**
* 創建場景
* @return
*/
public BranchGroup createScenceGraph(Canvas3D canvas){
//創建BranchGroup
scenceBranchGroupRoot = new BranchGroup();
//創建球形范圍、背景、光源
bounds = new BoundingSphere(new Point3d(0.0,0.0,0.0),100.0);
sceneTG = new TransformGroup();
sceneTG.setCapability(TransformGroup.ALLOW_TRANSFORM_WRITE);
scenceBranchGroupRoot.addChild(sceneTG);
//定義鼠標旋轉功能
MouseRotate mouserotate = new MouseRotate();
mouserotate.setTransformGroup(sceneTG);
scenceBranchGroupRoot.addChild(mouserotate);
mouserotate.setSchedulingBounds(bounds);
//定義鼠標縮放功能
MouseWheelZoom mouseWheelZoom = new MouseWheelZoom();
mouseWheelZoom.setTransformGroup(sceneTG);
scenceBranchGroupRoot.addChild(mouseWheelZoom);
mouseWheelZoom.setSchedulingBounds(bounds);
//定義鼠標拖拽功能
MouseTranslate mouseTranslate = new MouseTranslate();
mouseTranslate.setTransformGroup(sceneTG);
scenceBranchGroupRoot.addChild(mouseTranslate);
mouseTranslate.setSchedulingBounds(bounds);
//定義背景色
Color3f bgColor = new Color3f(1.0f,1.0f,1.0f);
Background bg = new Background(bgColor);
bg.setApplicationBounds(bounds);
scenceBranchGroupRoot.addChild(bg);
//定義兩個平行光源的顏色及照射方向,一個環境光源的顏色
Color3f light1Color = new Color3f(1.0f,1.0f,1.0f);
Vector3f light1Direction = new Vector3f(4.0f,-7.0f,-12.0f);
Color3f light2Color = new Color3f(1.0f,1.0f,1.0f);
Vector3f light2Direction = new Vector3f(-6.0f,-2.0f,-1.0f);
Color3f ambientColor = new Color3f(1.0f,1.0f,1.0f);
//用前面定義的顏色定義環境光
AmbientLight ambientLight = new AmbientLight(ambientColor);
ambientLight.setInfluencingBounds(bounds);
scenceBranchGroupRoot.addChild(ambientLight);
//用前面定義的照射方向與顏色定義兩個平行光
DirectionalLight light1 = new DirectionalLight(light1Color,light1Direction);
light1.setInfluencingBounds(bounds);
scenceBranchGroupRoot.addChild(light1);
DirectionalLight light2 = new DirectionalLight(light2Color,light2Direction);
light2.setInfluencingBounds(bounds);
scenceBranchGroupRoot.addChild(light2);
/**
* TransformGroup特點:
* 1.在三維空間中放置任何形體,燈光,聲音都要要到該對象。
* 2.該對象用來定義一個通過設置,可以移動、旋轉和放大縮小的局部坐標系。
* 3.該對象有兩個flags,其中ALLOW_TRANSFORM_WRITE用來將最新的數據(即坐標變化后的數據寫入到數據結構中),
* 允許程序在運行的時候修改該節點上的場景。ALLOW_TRANSFORM_READ用來讀取位置變化前的數據,從而進行判斷和處理。
* 允許程序在運行的時候讀取該節點上的場景。
* 4.通過設置ALLOW_TRANSFORM_WRITE來使坐標系運動(此時在不要讀取值時使用,如讀取移動的距離,選旋轉的角度,
* 縮放的比例等值。若要讀取這些值,則要再使用ALLOW_TRANSFORM_READ)
* 5.要在程序中通過鼠標,移動、旋轉、比例放大所指定的局部坐標系,則需要同時設置ALLOW_TRANSFORM_WRITE和ALLOW_TRANSFORM_READ。
* 6.Java虛擬機會為這兩個flags創建單獨的線程(或者進程)來負責接收場景的反饋,在控制場景,避免了用戶不必要的開銷。
*/
objTG = new TransformGroup();
sceneTG.addChild(objTG);
//定義存放3DMax文件的TransformGroup
tg1 = new TransformGroup();
/**
* Transform3D的特點
* 1.表示所指定的坐標的坐標變換,如旋轉、放大縮小、平移等
* 2.Quat4f(x,y,z,w)的參數介紹:x:x坐標 y:y坐標 z:z坐標 w:物體旋轉的角度 如:
* Quat4f(0.0f,1.0f,0.0f,1.57f) 表示物體繞Y軸旋轉90度,當Y軸的只越大則旋轉的幅度越大。
* 當x,y,z的值不為0時,其值的大小即表示轉動幅度的大小,值越大,表示向該方向轉動的幅度也越大。
* 3.Transform3D有四個方法rotx(),roty(), rotz(),setTranslation().當這四個方法一起使用的時候,只有最后一個有作用。
* 為了能夠讓rotx,roty, rotz都顯示出來,則可以使用setRotation(new Quat4())來代替,
* 此時不論setTranslation()在setRotation(new Quat4())前還是后,都可以顯示出效果
*/
t3d1 = new Transform3D();
t3d1.setScale(0.005);//初始化大小
t3d1.setTranslation(new Vector3f(0.0f,0.0f,-0.4f));
tg1 = new TransformGroup(t3d1);
//定義3dmax文件以及所有相關材質文件及所在目錄。
String modelDir = "";
String fileName = "car.3DS";
loaderBG = new BranchGroup();
try{
Loader3DS modelLoader = new Loader3DS();
Scene loaderScene = modelLoader.load(modelDir+fileName);
if(loaderScene!=null){
loaderBG = loaderScene.getSceneGroup();
}
}catch(Exception e){
e.printStackTrace();
}
tg1.addChild(loaderBG);
objTG.addChild(tg1);
return scenceBranchGroupRoot;
}
public static void main(String[] args){
new MainFrame(new M3DMax3dsfileLoader(), 900,720);
}
}
/**-------------------------------------------------代碼區 end--------------------------------------------------------**/
運行效果: