GraphicsConfigurationクラスSimpleUniverseをCanvas3D使用して作成します。SimpleUniverse.getPreferredConfiguration()次に、BranchGraphを作成します。BranchGraphの子としてTransformGraphを追加します。次に、Shape3DをTransformGraphの子として追加します。Shape3Dには、ジオメトリ（ポイント配列）と外観の2つが必要です。見た目から素材や照明の仕様をたくさん作ります。
ポイント配列だけを使用すると、ポイントのみが表示されます。ポリゴンを塗りつぶしたい場合はTriangleStripArrayまたは同様のものを使用し、線が必要な場合はLineStripArrayを使用する必要があります。
TransformGroupを使用して回転および移動します。光も追加することを忘れないでください。
TransformGroupには、回転、移動、または拡大縮小するためのパラメーターとしてTransform3Dクラスが必要です。
Shape3Dがサーフェスの場合は、カスタムカラーを指定するか、マテリアルを使用してその近くにライトを配置すると、見えなくなります。光がオブジェクトに到達するように、光源の境界範囲を設定することを忘れないでください。
- PointArray--->雲のような形
- LineArray--->破線の場合
- LineStripArray->行の場合
- TriangleArray --->離婚した三角形（サーフェスの場合）
- TriangleStripArray --->隣接する三角形（サーフェスの場合）
- TriangleFanArray ---->三角形を構築するように、ポイント（サーフェスの場合）を囲みます
- QuadArray---->立方体を作成するには6つのクワッドが必要です
- QuadStripArray--->より小さな座標配列で立方体を構築できます
もう1つの重要なこと：
simpleU.getViewingPlatform().getViewPlatform().setActivationRadius(300);
SimpleU.getViewer().getView().setBackClipDistance ( 300.0 );
表示範囲がさらに遠くなるため、移動してもオブジェクトが消えることはありません。
トランスフォームグループにマウスインタラクションをアタッチします
MouseRotate m1=new MouseRotate();
MouseZoom m2=new MouseZoom();
MouseTranslate m3=new MouseTranslate();
1580 x 1050の画像をデフォルトの3Dビュー範囲にマッピングする場合は、ポイント座標を1000で除算する必要があります（またはトランスフォームグループで1000分の1にスケールダウンします）。
チュートリアルを探す：
http://www.java3d.org/
http://www.java3d.org/tutorial.html
ここでは、チュートリアルをenergon.classに微調整しました
//skipped imports(char limit in this post)
public final class energon extends JPanel {
int s = 0, count = 0;
public energon() {
setLayout(new BorderLayout());
GraphicsConfiguration gc=SimpleUniverse.getPreferredConfiguration();
Canvas3D canvas3D = new Canvas3D(gc);//See the added gc? this is a preferred config
add("Center", canvas3D);
BranchGroup scene = createSceneGraph();
scene.compile();
// SimpleUniverse is a Convenience Utility class
SimpleUniverse simpleU = new SimpleUniverse(canvas3D);
// This moves the ViewPlatform back a bit so the
// objects in the scene can be viewed.
simpleU.getViewingPlatform().setNominalViewingTransform();
simpleU.addBranchGraph(scene);
}
public BranchGroup createSceneGraph() {
BranchGroup lineGroup = new BranchGroup();
Appearance app = new Appearance();
ColoringAttributes ca = new ColoringAttributes(new Color3f(204.0f, 204.0f, 204.0f), ColoringAttributes.SHADE_FLAT);
app.setColoringAttributes(ca);
Point3f[] plaPts = new Point3f[4];
for (int i = 0; i < 2; i++) {
for (int j = 0; j <2; j++) {
plaPts[count] = new Point3f(i/10.0f,j/10.0f,0);
//Look up line, i and j are divided by 10.0f to be able to
//see the points inside the view screen
count++;
}
}
PointArray pla = new PointArray(4, GeometryArray.COORDINATES);
pla.setCoordinates(0, plaPts);
Shape3D plShape = new Shape3D(pla, app);
TransformGroup objRotate = new TransformGroup();
objRotate.setCapability(TransformGroup.ALLOW_TRANSFORM_WRITE);
objRotate.addChild(plShape);
lineGroup.addChild(objRotate);
return lineGroup;
}
public static void main(String[] args) {
JFrame frame = new JFrame();
frame.add(new JScrollPane(new energon()));
frame.setSize(300, 300);
frame.setVisible(true);
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
}
}
出力：
さて、ポイントサイズを追加して、はっきりと見えるようにします（すぐに追加されます）
新しいコード（2〜3行追加）
import java.awt.BorderLayout;
import java.awt.GraphicsConfiguration;
import com.sun.j3d.utils.universe.*;
import java.awt.image.BufferedImage;
import javax.media.j3d.*;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.JScrollPane;
import javax.vecmath.Color3f;
import javax.vecmath.Point3f;
public final class energon extends JPanel {
int s = 0, count = 0;
public energon() {
setLayout(new BorderLayout());
GraphicsConfiguration gc=SimpleUniverse.getPreferredConfiguration();
Canvas3D canvas3D = new Canvas3D(gc);
add("Center", canvas3D);
BranchGroup scene = createSceneGraph();
scene.compile();
// SimpleUniverse is a Convenience Utility class
SimpleUniverse simpleU = new SimpleUniverse(canvas3D);
// This moves the ViewPlatform back a bit so the
// objects in the scene can be viewed.
simpleU.getViewingPlatform().setNominalViewingTransform();
simpleU.addBranchGraph(scene);
}
public BranchGroup createSceneGraph() {
BranchGroup lineGroup = new BranchGroup();
Appearance app = new Appearance();
ColoringAttributes ca = new ColoringAttributes(new Color3f(204.0f, 204.0f, 204.0f), ColoringAttributes.SHADE_FLAT);
app.setColoringAttributes(ca);
Point3f[] plaPts = new Point3f[4];
for (int i = 0; i < 2; i++) {
for (int j = 0; j <2; j++) {
plaPts[count] = new Point3f(i/10.0f,j/10.0f,0);
count++;
}
}
PointArray pla = new PointArray(4, GeometryArray.COORDINATES);
pla.setCoordinates(0, plaPts);
//between here!
PointAttributes a_point_just_bigger=new PointAttributes();
a_point_just_bigger.setPointSize(10.0f);//10 pixel-wide point
a_point_just_bigger.setPointAntialiasingEnable(true);//now points are sphere-like(not a cube)
app.setPointAttributes(a_point_just_bigger);
//and here! sets the point-attributes so it is easily seen.
Shape3D plShape = new Shape3D(pla, app);
TransformGroup objRotate = new TransformGroup();
objRotate.setCapability(TransformGroup.ALLOW_TRANSFORM_WRITE);
objRotate.addChild(plShape);
lineGroup.addChild(objRotate);
return lineGroup;
}
public static void main(String[] args) {
JFrame frame = new JFrame();
frame.add(new JScrollPane(new energon()));
frame.setSize(300, 300);
frame.setVisible(true);
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
}
}
出力：
これは、trianglestriparrayを使用して一種の矢印の形を描き、マウスボタン（そのうちの3つ）を使用してズームイン、回転、および移動できる別の方法です。
//skipped imports beause of char limit in this post
public final class energon extends JPanel {
int s = 0, count = 0;
public energon() {
setLayout(new BorderLayout());
GraphicsConfiguration gc=SimpleUniverse.getPreferredConfiguration();
Canvas3D canvas3D = new Canvas3D(gc);
add("Center", canvas3D);
BranchGroup scene = createSceneGraph();
scene.compile();
// SimpleUniverse is a Convenience Utility class
SimpleUniverse simpleU = new SimpleUniverse(canvas3D);
// This moves the ViewPlatform back a bit so the
// objects in the scene can be viewed.
simpleU.getViewingPlatform().setNominalViewingTransform();
simpleU.addBranchGraph(scene);
}
public BranchGroup createSceneGraph() {
BranchGroup lineGroup = new BranchGroup();
Appearance app = new Appearance();
ColoringAttributes ca = new ColoringAttributes(new Color3f(204.0f, 204.0f,204.0f), ColoringAttributes.SHADE_FLAT);
app.setColoringAttributes(ca);
Point3f[] plaPts = new Point3f[5];
for (int i = 0; i < 2; i++) {
for (int j = 0; j <2; j++) {
plaPts[count] = new Point3f(i/10.0f,j/10.0f,0);
count++;
}
}
plaPts[count] = new Point3f(3.0f/10.0f,2.0f/10.0f,0);
int[]intArr=new int[5];
intArr[0]=3;intArr[1]=4;intArr[2]=4;intArr[3]=3;intArr[4]=3;
TriangleStripArray pla =new TriangleStripArray(20, GeometryArray.COLOR_3|GeometryArray.NORMALS|GeometryArray.COORDINATES,intArr);
pla.setCoordinates(0, plaPts);
PointAttributes a_point_just_bigger=new PointAttributes();
a_point_just_bigger.setPointSize(10.0f);//10 pixel-wide point
a_point_just_bigger.setPointAntialiasingEnable(true);//now points are sphere-like(not a cube)
app.setPointAttributes(a_point_just_bigger);
PolygonAttributes la=new PolygonAttributes();
la.setPolygonMode(PolygonAttributes.POLYGON_FILL);
la.setCullFace(PolygonAttributes.CULL_NONE);
app.setPolygonAttributes(la);
Material matt=new Material();
matt.setAmbientColor(new Color3f(1,1,1));
matt.setDiffuseColor(new Color3f(0.5f,0.5f,0.7f));
matt.setEmissiveColor(new Color3f(0.2f,0.2f,0.3f));
matt.setShininess(0.5f);
matt.setSpecularColor(new Color3f(0.4f,0.6f,0.9f));
matt.setLightingEnable(true);
app.setMaterial(matt);
RenderingAttributes ra=new RenderingAttributes();
ra.setIgnoreVertexColors(true);
app.setRenderingAttributes(ra);
Shape3D plShape = new Shape3D(pla, app);
TransformGroup objRotate = new TransformGroup();
MouseRotate mr=new MouseRotate();
mr.setTransformGroup(objRotate);
mr.setSchedulingBounds(new BoundingSphere());
lineGroup.addChild(mr);
MouseZoom mz=new MouseZoom();
mz.setTransformGroup(objRotate);
mz.setSchedulingBounds(new BoundingSphere());
lineGroup.addChild(mz);
MouseTranslate msl=new MouseTranslate();
msl.setTransformGroup(objRotate);
msl.setSchedulingBounds(new BoundingSphere());
lineGroup.addChild(msl);
objRotate.setCapability(TransformGroup.ALLOW_TRANSFORM_WRITE);
objRotate.addChild(plShape);
AmbientLight al=new AmbientLight();
// al.addScope(objRotate);
al.setBounds(new BoundingSphere());
al.setEnable(true);
al.setColor(new Color3f(1,1,1));
lineGroup.addChild(objRotate);
lineGroup.addChild(al);
return lineGroup;
}
public static void main(String[] args) {
JFrame frame = new JFrame();
frame.add(new JScrollPane(new energon()));
frame.setSize(300, 300);
frame.setVisible(true);
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
}
}
出力：
ポイントの色を変えたいですか？新しいバージョンは次のとおりです。
//skipping imports..
public final class energon extends JPanel {
int s = 0, count = 0;
public energon() {
setLayout(new BorderLayout());
GraphicsConfiguration gc=SimpleUniverse.getPreferredConfiguration();
Canvas3D canvas3D = new Canvas3D(gc);
add("Center", canvas3D);
BranchGroup scene = createSceneGraph();
scene.compile();
// SimpleUniverse is a Convenience Utility class
SimpleUniverse simpleU = new SimpleUniverse(canvas3D);
// This moves the ViewPlatform back a bit so the
// objects in the scene can be viewed.
simpleU.getViewingPlatform().setNominalViewingTransform();
simpleU.addBranchGraph(scene);
}
public BranchGroup createSceneGraph() {
BranchGroup lineGroup = new BranchGroup();
Appearance app = new Appearance();
ColoringAttributes ca = new ColoringAttributes(new Color3f(204.0f, 204.0f, 204.0f), ColoringAttributes.SHADE_FLAT);
app.setColoringAttributes(ca);
Point3f[] plaPts = new Point3f[4];
Color3f[] colPts=new Color3f[4]; //parallel to coordinates, colors.
for (int i = 0; i < 2; i++) {
for (int j = 0; j <2; j++) {
plaPts[count] = new Point3f(i/10.0f,j/10.0f,0);
colPts[count]=new Color3f(i/3.0f,j/3.0f,(float) ((i+j)/3.0));//my arbitrary color set :)
count++;
}
}
PointArray pla = new PointArray(4, GeometryArray.COORDINATES|GeometryArray.COLOR_3);
pla.setColors(0,colPts); //this is the color-array setting
pla.setCoordinates(0, plaPts);
//between here!
PointAttributes a_point_just_bigger=new PointAttributes();
a_point_just_bigger.setPointSize(10.0f);//10 pixel-wide point
a_point_just_bigger.setPointAntialiasingEnable(true);//now points are sphere-like(not a cube)
app.setPointAttributes(a_point_just_bigger);
//and here! sets the point-attributes so it is easily seen.
Shape3D plShape = new Shape3D(pla, app);
TransformGroup objRotate = new TransformGroup();
objRotate.setCapability(TransformGroup.ALLOW_TRANSFORM_WRITE);
objRotate.addChild(plShape);
lineGroup.addChild(objRotate);
return lineGroup;
}
public static void main(String[] args) {
JFrame frame = new JFrame();
frame.add(new JScrollPane(new energon()));
frame.setSize(300, 300);
frame.setVisible(true);
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
}
}
出力：
カスタムキューブ形状と、lft-マウスボタンの相互作用を備えた2つの指向性ライトを使用した新しい例：
//skipped imports relating with char limit in this post
public final class energon extends JPanel {
int s = 0, count = 0;
public energon() {
setLayout(new BorderLayout());
GraphicsConfiguration gc=SimpleUniverse.getPreferredConfiguration();
Canvas3D canvas3D = new Canvas3D(gc);
add("Center", canvas3D);
BranchGroup scene = createSceneGraph();
scene.compile();
// SimpleUniverse is a Convenience Utility class
SimpleUniverse simpleU = new SimpleUniverse(canvas3D);
// This moves the ViewPlatform back a bit so the
// objects in the scene can be viewed.
simpleU.getViewingPlatform().setNominalViewingTransform();
simpleU.addBranchGraph(scene);
}
public BranchGroup createSceneGraph() {
BranchGroup lineGroup = new BranchGroup();
Appearance app = new Appearance();
QuadArray lsa = new QuadArray(48,QuadArray.COORDINATES|QuadArray.NORMALS);
Vector3f [] normals=new Vector3f[24];
for(int i=0;i<24;i++)normals[i]=new Vector3f();
Point3f [] pts=new Point3f[24];
for(int i=0;i<24;i++)pts[i]=new Point3f();
Color3f [] clrs=new Color3f[24];
for(int i=0;i<24;i++)clrs[i]=new Color3f(0.5f,0.5f,0.5f);
//cube=6 quads
//first quad
pts[0].x=-0.5f;pts[0].y=-0.5f;pts[0].z=-0.5f;
pts[1].x=-0.5f;pts[1].y=-0.5f;pts[1].z=0.5f;
pts[2].x=-0.5f;pts[2].y=0.5f;pts[2].z=0.5f;
pts[3].x=-0.5f;pts[3].y=0.5f;pts[3].z=-0.5f;
normals[0].x=-1;normals[1].x=-1;normals[2].x=-1;normals[3].x=-1;
//second quad
pts[4].x=0.5f;pts[4].y=-0.5f;pts[4].z=-0.5f;
pts[5].x=0.5f;pts[5].y=-0.5f;pts[5].z=0.5f;
pts[6].x=0.5f;pts[6].y=0.5f;pts[6].z=0.5f;
pts[7].x=0.5f;pts[7].y=0.5f;pts[7].z=-0.5f;
normals[4].x=1;normals[5].x=1;normals[6].x=1;normals[7].x=1;
//third quad
pts[8].x=-0.5f;pts[8].y=-0.5f;pts[8].z=-0.5f;
pts[9].x=0.5f;pts[9].y=-0.5f;pts[9].z=-0.5f;
pts[10].x=0.5f;pts[10].y=0.5f;pts[10].z=-0.5f;
pts[11].x=-0.5f;pts[11].y=0.5f;pts[11].z=-0.5f;
normals[8].z=-1;normals[9].z=-1;normals[10].z=-1;normals[11].z=-1;
//fourth quad
pts[12].x=-0.5f;pts[12].y=-0.5f;pts[12].z=0.5f;
pts[13].x=0.5f;pts[13].y=-0.5f;pts[13].z=0.5f;
pts[14].x=0.5f;pts[14].y=0.5f;pts[14].z=0.5f;
pts[15].x=-0.5f;pts[15].y=0.5f;pts[15].z=0.5f;
normals[12].z=1;normals[13].z=1;normals[14].z=1;normals[15].z=1;
//fifth quad
pts[16].x=-0.5f;pts[16].y=-0.5f;pts[16].z=-0.5f;
pts[17].x=-0.5f;pts[17].y=-0.5f;pts[17].z=0.5f;
pts[18].x=0.5f;pts[18].y=-0.5f;pts[18].z=0.5f;
pts[19].x=0.5f;pts[19].y=-0.5f;pts[19].z=-0.5f;
normals[16].y=-1;normals[17].y=-1;normals[18].y=-1;normals[19].y=-1;
//sixth quad
pts[20].x=-0.5f;pts[20].y=0.5f;pts[20].z=-0.5f;
pts[21].x=-0.5f;pts[21].y=0.5f;pts[21].z=0.5f;
pts[22].x=0.5f;pts[22].y=0.5f;pts[22].z=0.5f;
pts[23].x=0.5f;pts[23].y=0.5f;pts[23].z=-0.5f;
normals[20].y=1;normals[21].y=1;normals[22].y=1;normals[23].y=1;
lsa.setNormals(0, normals);
lsa.setCoordinates(0, pts);
Shape3D sh=new Shape3D();
PolygonAttributes pa=new PolygonAttributes();
pa.setPolygonMode(PolygonAttributes.POLYGON_FILL);
pa.setCullFace(PolygonAttributes.CULL_NONE);
Material mat=new Material();
mat.setEmissiveColor(new Color3f(0.5f,0.5f,0.5f));
mat.setAmbientColor(new Color3f(0.1f,0.1f,0.1f));
mat.setDiffuseColor(new Color3f(0.2f,0.3f,0.4f));
mat.setSpecularColor(new Color3f(0.6f,0.3f,0.2f));
mat.setLightingEnable(true);
RenderingAttributes ra=new RenderingAttributes();
ra.setIgnoreVertexColors(true);
ColoringAttributes ca=new ColoringAttributes();
ca.setShadeModel(ColoringAttributes.SHADE_GOURAUD);
ca.setColor(new Color3f(0.2f,0.5f,0.9f));
app.setColoringAttributes(ca);
app.setRenderingAttributes(ra);
app.setMaterial(mat);
app.setPolygonAttributes(pa);
sh.setGeometry(lsa);
sh.setAppearance(app);
sh.setPickable(true);
TransformGroup objRotate = new TransformGroup();
objRotate.setCapability(TransformGroup.ALLOW_TRANSFORM_WRITE);
objRotate.addChild(sh);
DirectionalLight light1=new DirectionalLight();
light1.setInfluencingBounds(new BoundingSphere(new Point3d(-5.0,0,0),10.0));
light1.setColor(new Color3f(1f,1f,1f));
light1.setDirection(new Vector3f(0,1,0));
objRotate.addChild(light1);
DirectionalLight light2=new DirectionalLight();
light2.setInfluencingBounds(new BoundingSphere(new Point3d(5.0,0,0),10.0));
light2.setColor(new Color3f(0.5f,1f,0.5f));
light2.setDirection(new Vector3f(0,-1,0));
objRotate.addChild(light2);
MouseRotate f1=new MouseRotate();
f1.setSchedulingBounds(new BoundingSphere());
f1.setTransformGroup(objRotate);
lineGroup.addChild(f1);
objRotate.addChild(new Sphere(0.60f,1,128));
lineGroup.addChild(objRotate);
return lineGroup;
}
public static void main(String[] args) {
JFrame frame = new JFrame();
frame.add(new JScrollPane(new energon()));
frame.setSize(300, 300);
frame.setVisible(true);
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
}
}
出力：
最も重要な部分は、三角測量器を使用して、ポイント座標だけを使用して実際の3D形状を取得できることです。
GeometryInfo ginfo=new GeometryInfo(GeometryInfo.POLYGON_ARRAY);
Triangulator tr = new Triangulator();
NormalGenerator normalGenerator = new NormalGenerator();
Stripifier st = new Stripifier();
int [] iint=new int[]{4,4,4,4,4,4};-->each face of cube has 4 points
ginfo.setStripCounts(iint);
ginfo.setCoordinates(pts);
tr.triangulate(ginfo); // ginfo contains the geometry
normalGenerator.generateNormals( ginfo );
st.stripify(ginfo);
sh.setGeometry(ginfo.getGeometryArray()); // shape is a Shape3D.
//now you can use Shape3D-type sh as a 3D-surface-containing shape
最後の例では、quadarrayを使用する必要がありましたが、現在は、ポイントと三角測量器を使用するだけで同じことができます。
//skipping imports since char limit is reached in this answer
public final class energon extends JPanel {
int s = 0, count = 0;
public energon() {
setLayout(new BorderLayout());
GraphicsConfiguration gc=SimpleUniverse.getPreferredConfiguration();
Canvas3D canvas3D = new Canvas3D(gc);
add("Center", canvas3D);
BranchGroup scene = createSceneGraph();
scene.compile();
// SimpleUniverse is a Convenience Utility class
SimpleUniverse simpleU = new SimpleUniverse(canvas3D);
// This moves the ViewPlatform back a bit so the
// objects in the scene can be viewed.
simpleU.getViewingPlatform().setNominalViewingTransform();
simpleU.addBranchGraph(scene);
}
public BranchGroup createSceneGraph() {
BranchGroup lineGroup = new BranchGroup();
Appearance app = new Appearance();
Vector3f [] normals=new Vector3f[24];
for(int i=0;i<24;i++)normals[i]=new Vector3f();
Point3f [] pts=new Point3f[24];
for(int i=0;i<24;i++)pts[i]=new Point3f();
Color3f [] clrs=new Color3f[24];
for(int i=0;i<24;i++)clrs[i]=new Color3f(0.5f,0.5f,0.5f);
//cube=6 quads
//first quad
pts[0].x=-0.5f;pts[0].y=-0.5f;pts[0].z=-0.5f;
pts[1].x=-0.5f;pts[1].y=-0.5f;pts[1].z=0.5f;
pts[2].x=-0.5f;pts[2].y=0.5f;pts[2].z=0.5f;
pts[3].x=-0.5f;pts[3].y=0.5f;pts[3].z=-0.5f;
normals[0].x=-1;normals[1].x=-1;normals[2].x=-1;normals[3].x=-1;
//second quad
pts[4].x=0.5f;pts[4].y=-0.5f;pts[4].z=-0.5f;
pts[5].x=0.5f;pts[5].y=-0.5f;pts[5].z=0.5f;
pts[6].x=0.5f;pts[6].y=0.5f;pts[6].z=0.5f;
pts[7].x=0.5f;pts[7].y=0.5f;pts[7].z=-0.5f;
normals[4].x=1;normals[5].x=1;normals[6].x=1;normals[7].x=1;
//third quad
pts[8].x=-0.5f;pts[8].y=-0.5f;pts[8].z=-0.5f;
pts[9].x=0.5f;pts[9].y=-0.5f;pts[9].z=-0.5f;
pts[10].x=0.5f;pts[10].y=0.5f;pts[10].z=-0.5f;
pts[11].x=-0.5f;pts[11].y=0.5f;pts[11].z=-0.5f;
normals[8].z=-1;normals[9].z=-1;normals[10].z=-1;normals[11].z=-1;
//fourth quad
pts[12].x=-0.5f;pts[12].y=-0.5f;pts[12].z=0.5f;
pts[13].x=0.5f;pts[13].y=-0.5f;pts[13].z=0.5f;
pts[14].x=0.5f;pts[14].y=0.5f;pts[14].z=0.5f;
pts[15].x=-0.5f;pts[15].y=0.5f;pts[15].z=0.5f;
normals[12].z=1;normals[13].z=1;normals[14].z=1;normals[15].z=1;
//fifth quad
pts[16].x=-0.5f;pts[16].y=-0.5f;pts[16].z=-0.5f;
pts[17].x=-0.5f;pts[17].y=-0.5f;pts[17].z=0.5f;
pts[18].x=0.5f;pts[18].y=-0.5f;pts[18].z=0.5f;
pts[19].x=0.5f;pts[19].y=-0.5f;pts[19].z=-0.5f;
normals[16].y=-1;normals[17].y=-1;normals[18].y=-1;normals[19].y=-1;
//sixth quad
pts[20].x=-0.5f;pts[20].y=0.5f;pts[20].z=-0.5f;
pts[21].x=-0.5f;pts[21].y=0.5f;pts[21].z=0.5f;
pts[22].x=0.5f;pts[22].y=0.5f;pts[22].z=0.5f;
pts[23].x=0.5f;pts[23].y=0.5f;pts[23].z=-0.5f;
normals[20].y=1;normals[21].y=1;normals[22].y=1;normals[23].y=1;
Shape3D sh=new Shape3D();
PolygonAttributes pa=new PolygonAttributes();
pa.setPolygonMode(PolygonAttributes.POLYGON_FILL);
pa.setCullFace(PolygonAttributes.CULL_NONE);
Material mat=new Material();
mat.setEmissiveColor(new Color3f(0.5f,0.5f,0.5f));
mat.setAmbientColor(new Color3f(0.1f,0.1f,0.1f));
mat.setDiffuseColor(new Color3f(0.2f,0.3f,0.4f));
mat.setSpecularColor(new Color3f(0.6f,0.3f,0.2f));
mat.setLightingEnable(true);
RenderingAttributes ra=new RenderingAttributes();
ra.setIgnoreVertexColors(true);
ColoringAttributes ca=new ColoringAttributes();
ca.setShadeModel(ColoringAttributes.SHADE_GOURAUD);
ca.setColor(new Color3f(0.2f,0.5f,0.9f));
app.setColoringAttributes(ca);
app.setRenderingAttributes(ra);
app.setMaterial(mat);
app.setPolygonAttributes(pa);
sh.setAppearance(app);
sh.setPickable(true);
GeometryArray ga=null;
GeometryInfo ginfo=new GeometryInfo(GeometryInfo.POLYGON_ARRAY);
Triangulator tr = new Triangulator();
NormalGenerator normalGenerator = new NormalGenerator();
Stripifier st = new Stripifier();
int [] iint=new int[]{4,4,4,4,4,4};
ginfo.setStripCounts(iint);
ginfo.setCoordinates(pts);
tr.triangulate(ginfo); // ginfo contains the geometry
normalGenerator.generateNormals( ginfo );
st.stripify(ginfo);
sh.setGeometry(ginfo.getGeometryArray()); // shape is a Shape3D.
TransformGroup objRotate = new TransformGroup();
objRotate.setCapability(TransformGroup.ALLOW_TRANSFORM_WRITE);
objRotate.addChild(sh);
DirectionalLight light1=new DirectionalLight();
light1.setInfluencingBounds(new BoundingSphere(new Point3d(-5.0,0,0),10.0));
light1.setColor(new Color3f(1f,1f,1f));
light1.setDirection(new Vector3f(0,1,0));
objRotate.addChild(light1);
DirectionalLight light2=new DirectionalLight();
light2.setInfluencingBounds(new BoundingSphere(new Point3d(5.0,0,0),10.0));
light2.setColor(new Color3f(0.5f,1f,0.5f));
light2.setDirection(new Vector3f(0,-1,0));
objRotate.addChild(light2);
MouseRotate f1=new MouseRotate();
f1.setSchedulingBounds(new BoundingSphere());
f1.setTransformGroup(objRotate);
lineGroup.addChild(f1);
objRotate.addChild(new Sphere(0.60f,1,128));
lineGroup.addChild(objRotate);
return lineGroup;
}
public static void main(String[] args) {
JFrame frame = new JFrame();
frame.add(new JScrollPane(new energon()));
frame.setSize(300, 300);
frame.setVisible(true);
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
}
}
出力：同じ！ポイントの座標と面の頂点番号を指定するだけです
- ストリップカウントを設定する
- 座標を設定します（tiffから）
- 三角測量
- 法線を生成する
- ストライプ化
- .getGeometry（終了）