创建一个SimpleUniverse并Canvas3D使用SimpleUniverse.getPreferredConfiguration()GraphicsConfiguration 类。然后创建一个 BranchGraph。添加一个 TransformGraph 作为 BranchGraph 的子级。然后将您的 Shape3D 添加为 TransformGraph 的子项。Shape3D 必须有两件事：几何（你的点数组）和外观。从外观上，您制作了许多规格的材料和照明。
如果你只使用点数组，你只会看到点。如果你想填充多边形，应该使用 TriangleStripArray 或类似的东西，如果你想要线条，应该使用 LineStripArray。
使用 TransformGroup 进行旋转和平移。别忘了加光。
TransformGroup 需要一个 Transform3D 类作为参数来旋转和平移或缩放。
如果你的 Shape3D 是一个表面，你可以给它自定义颜色或使用材料并在它附近放一盏灯，否则你看不到它。不要忘记设置光源范围，以便光线到达对象。
- PointArray--->云状形状
- LineArray--->对于虚线
- LineStripArray-->用于线条
- TriangleArray--->离婚三角形（用于表面）
- TriangleStripArray--->相邻三角形（用于表面）
- TriangleFanArray---->就像围绕一个点构建三角形（对于一个表面）
- QuadArray---->需要六个四边形有一个立方体
- QuadStripArray--->可以构造一个坐标数组更小的立方体
另一个重要的事情：
simpleU.getViewingPlatform().getViewPlatform().setActivationRadius(300);
SimpleU.getViewer().getView().setBackClipDistance ( 300.0 );
使您的观看范围更远，因此当您移动时物体不会消失。
将鼠标交互附加到您的变换组
MouseRotate m1=new MouseRotate();
MouseZoom m2=new MouseZoom();
MouseTranslate m3=new MouseTranslate();
如果要将 1580 x 1050 图像映射到默认的 3D 视图范围，则应将点坐标除以 1000。（或在变换组中缩小到 1000）
寻找教程：
http://www.java3d.org/
http://www.java3d.org/tutorial.html
在这里，我将您的教程调整为 energon.class
//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);
}
}
输出：
好的，让我们添加一个磅值，以便我们可以清楚地看到它们（稍后会添加）
新代码（只添加了 2-3 行）
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);
}
}
输出：
这是另一个使用 trianglestriparray 绘制一种箭头形状，同时您可以使用鼠标按钮（其中 3 个）进行放大、旋转和平移。
//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);
}
}
输出：
你想改变点的颜色吗？这是新版本：
//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);
}
}
输出：
具有自定义立方体形状和两个具有 lft 鼠标按钮交互的定向灯的新示例：
//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);
}
}
输出：
最重要的部分是，您可以使用 triangulator 仅使用点坐标获得真正的 3D 形状
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
在最后一个示例中，您必须使用四元组，但现在，您可以仅使用点和三角测量器来执行相同操作：
//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);
}
}
输出：一样！你只需给出点的坐标和面顶点数
- 设置条数
- 设置坐标（来自你的 tiff）
- 三角测量
- 生成法线
- 剥离
- .getGeometry(完成)