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[Java3Djp:00771] Java 3D 1.1.2 でのLineのpick
＝◆ソナム亭◆＝＝ 販売代理店募集中(限定５０件) ＝＝＝＝＝＝＝＝＝＝＝＝
本場韓国風のピリッとジューシーな食感！！
今までのチキンのイメージが変わります。
是非、一度ご賞味下さい。 現在代理店募集中（限定５０件）を行っております。
＝＝＝＝＝＝＝＝＝＝＝ http://www.matsuronet.ne.jp/somamutei/＝＝＝＝＝＝
えんどうです。
>2つの線(LineArray)を表示して、クリックすると色が変わるソースを添付しておきます。
超遠隔リプライですが、
Java 3D 1.1.2 OpenGL Win32 では、PickObject.USE_GEOMETRY, USE_BOUNDS ともに
Line の pick に成功します。
2月からアーカイブが更新されていないようなので、つきやまさんのソースを再掲します。
1 import java.applet.Applet;
2 import java.awt.*;
3 import java.awt.event.*;
4 import java.awt.event.WindowAdapter;
5 import com.sun.j3d.utils.applet.MainFrame;
6 import com.sun.j3d.utils.behaviors.picking.PickObject;
7 import com.sun.j3d.utils.universe.*;
8 import javax.media.j3d.*;
9 import javax.vecmath.*;
10
11 public class lineSample extends Applet{
12
13 public Canvas3D c;
14 public BranchGroup objRoot;
15 public TransformGroup objTrans;
16
17 LineArray line_g;
18 LineArray line2_g;
19
20 public BranchGroup createSceneGraph() {
21
22 objRoot = new BranchGroup();
23
24 objTrans = new TransformGroup();
25 objTrans.setCapability(TransformGroup.ALLOW_TRANSFORM_WRITE);
26 objRoot.addChild(objTrans);
27
28 /* Line */
29 //Geometry
30 line_g = new LineArray(6, LineArray.COORDINATES | LineArray.COLOR_3);
31 line_g.setCapability( LineArray.ALLOW_COLOR_WRITE );
32 line_g.setCapability( LineArray.ALLOW_INTERSECT );
33
34 line2_g = new LineArray(6, LineArray.COORDINATES | LineArray.COLOR_3);
35 line2_g.setCapability( LineArray.ALLOW_COLOR_WRITE );
36 line2_g.setCapability( LineArray.ALLOW_INTERSECT );
37
38 //Vertex
39 Point3d v1 = new Point3d(0.0, -0.25, 0.0);
40 Point3d v2 = new Point3d(0.25, -0.25, 0.0);
41 Point3d v3 = new Point3d(0.25, -0.5, 0.0);
42 Point3d v4 = new Point3d(0.5, -0.5, 0.0);
43 Point3d[] vertexs = {v1, v2, v2, v3, v3, v4};
44 line_g.setCoordinates(0, vertexs);
45
46 Point3d v01 = new Point3d(0.0, 0.25, 0.0);
47 Point3d v02 = new Point3d(0.25, 0.25, 0.0);
48 Point3d v03 = new Point3d(0.25, 0.0, 0.0);
49 Point3d v04 = new Point3d(0.5, 0.0, 0.0);
50 Point3d[] vertexs2 = {v01, v02, v02, v03, v03, v04};
51 line2_g.setCoordinates(0, vertexs2);
52
53 //Color
54 Color3f line_c = new Color3f(0.0f, 1.0f, 0.0f);
55 Color3f[] colors = {line_c, line_c, line_c, line_c, line_c, line_c};
56 line_g.setColors(0, colors);
57 line2_g.setColors(0, colors);
58
59 //Shape
60 Shape3D line_o = new Shape3D(line_g);
61 line_o.setCapability(Shape3D.ENABLE_PICK_REPORTING);
62 line_o.setCapability(Shape3D.ALLOW_GEOMETRY_READ);
63 line_o.setCapability(Shape3D.ALLOW_GEOMETRY_WRITE);
64 line_o.setUserData("line_off");
65
66 Shape3D line2_o = new Shape3D(line2_g);
67 line2_o.setCapability(Shape3D.ENABLE_PICK_REPORTING);
68 line2_o.setCapability(Shape3D.ALLOW_GEOMETRY_READ);
69 line2_o.setCapability(Shape3D.ALLOW_GEOMETRY_WRITE);
70 line2_o.setUserData("line_off");
71
72 //Appearance
73 Appearance line_a = new Appearance();
74 LineAttributes la = new LineAttributes(1.0f, LineAttributes.PATTERN_SOLID, false);
75 line_a.setLineAttributes(la);
76 line_o.setAppearance(line_a);
77 line2_o.setAppearance(line_a);
78
79 //Add SG
80 objTrans.addChild(line2_o);
81 objTrans.addChild(line_o);
82
83 return objRoot;
84 }
85
86 public lineSample() {
87
88 setLayout(new BorderLayout());
89 c = new Canvas3D(null);
90 add("Center", c);
91
92 BranchGroup scene = createSceneGraph();
93 scene.setCapability( BranchGroup.ALLOW_BOUNDS_READ );
94
95 //Mouse Listener
96 MListener mlistener = new MListener(c, objRoot);
97 c.addMouseListener(mlistener);
98
99 SimpleUniverse u = new SimpleUniverse(c);
100 u.getViewingPlatform().setNominalViewingTransform();
101 u.addBranchGraph(scene);
102
103 }
104
105 public void printAll(Graphics g) {
106 int width = getSize().width;
107 int height = getSize().height;
108 g.setClip(0, 0, width, height);
109 super.printAll(g);
110 }
111
112 public static void main(String[] args) {
113 new MainFrame(new lineSample(), 256, 256);
114 }
115
116 }
117
118
119 class MListener extends MouseAdapter{
120
121 Canvas3D canvas;
122 BranchGroup objRoot;
123
124 public MListener(Canvas3D c, BranchGroup or){
125 super();
126 canvas = c;
127 objRoot = or;
128 }
129
130 public void mousePressed(MouseEvent e){
131 int x1 = e.getX();
132 int y1 = e.getY();
133
134 System.out.println("mousePressed(x1,y1)=(" + x1 + "," + y1 + ")");
135
136 /* Line Picking */
137
138 PickObject pick = new PickObject(canvas,objRoot);System.out.println("no1");
139
140 //SceneGraphPath path = pick.pickClosest(x1, y1, PickObject.USE_BOUNDS);System.out.println("no2");
141 SceneGraphPath path = pick.pickClosest(x1, y1, PickObject.USE_GEOMETRY);System.out.println("no2");
142 System.out.println("hoge");
143 Shape3D shape = (Shape3D)pick.pickNode(path,PickObject.SHAPE3D);
144
145 Color3f line_c;
146
147 if (shape != null){
148 System.out.println("picking!");
149
150 if(shape.getUserData().equals("line_off")){
151 line_c = new Color3f(1.0f, 0.0f, 0.0f);
152 shape.setUserData("line_on");
153 }
154 else{
155 line_c = new Color3f(0.0f, 1.0f, 0.0f);
156 shape.setUserData("line_off");
157 }
158
159 System.out.println( shape.getUserData() );
160 Color3f[] colors = {line_c, line_c, line_c, line_c, line_c, line_c};
161 ((LineArray)shape.getGeometry()).setColors(0, colors);
162 }
163
164
165 }
166
167 }
--
ENDO Yasuyuki <yasuyuki@xxxxxxxxxx>
http://www.javaopen.org/jfriends/ (Japanese Only)