01 #include <Inventor/Qt/SoQt.h>
02 #include <Inventor/Qt/viewers/SoQtExaminerViewer.h>
03 #include <Inventor/SoInput.h>
04 #include <Inventor/nodes/SoSeparator.h>
05 #include <Inventor/nodes/SoSpotLight.h>
06 #include <Inventor/nodes/SoScale.h>
07 #include <Inventor/nodes/SoTexture2.h>
08 #include <Inventor/nodes/SoTranslation.h>
09 #include <Inventor/nodes/SoRotationXYZ.h>
10 #include <Inventor/nodes/SoSphere.h>
11 #include <Inventor/engines/SoTimeCounter.h>
12 #include <Inventor/engines/SoCalculator.h>
13 
14 // Insert Code for Listing 1 and 2 here 
15 
16 int main(int argc, char ** argv)
17 {
18   // Initialize SoQt (creates a Qt window)
19   QWidget *window = SoQt::init("main");
20 
21   // Create scene graph
22   SoSeparator *root = new SoSeparator;
23   root->ref();
24 
25   // Spotlight scene: also creates shadow
26   SoSpotLight *light = new SoSpotLight;
27    light->location.setValue(0,0,2);
28    light->direction.setValue(0,0,-1);
29    light->cutOffAngle = 1.5;
30   root->addChild(light);
31 
32   // Group node for rotating earth
33   SoSeparator *earth = new SoSeparator;
34 
35   // Set rotation node
36   SoRotationXYZ *earthrotation = new SoRotationXYZ;
37    earthrotation->axis.setValue("Y");
38   earth->addChild(earthrotation);
39 
40   // Add earth to scene 
41   earth->addChild(drawEarth());
42 
43   // Set Counter 
44   SoTimeCounter *counter = new SoTimeCounter;
45    counter->max=360;
46    counter->step=1;
47    counter->frequency=0.03;
48 
49   // Convert values: Degrees -> Rad
50   SoCalculator *converter = new SoCalculator;
51    converter->a.connectFrom(&counter->output);
52    converter->expression.set1Value(0,"oa=a/(2*M_PI)");
53 
54   // Connect counter to earth rotation node
55   earthrotation->angle.connectFrom(&converter->oa);
56 
57   // Add earth group node 
58   root->addChild(earth);
59 
60   // Create group node for plane 
61   SoSeparator *plane = new SoSeparator;
62 
63   // Move plane from center of scene
64   SoTranslation *altitude = new SoTranslation;
65    altitude->translation.setValue(0,0,1.2);
66   plane->addChild(altitude);
67 
68   // Scale plane down and turn through 90 
69   SoScale *scale = new SoScale;
70    scale->scaleFactor.setValue(0.0025,0.0025,0.0025);
71   plane->addChild(scale);
72   SoRotationXYZ *course = new SoRotationXYZ;
73    course->axis.setValue("Y");
74    course->angle = 1.5707963;
75   plane->addChild(course);
76 
77   // Read plane geometry from file
78   plane->addChild(loadGeometry("boeing767.iv"));
79 
80   // Add plane to scene
81   root->addChild(plane);
82 
83   // Create viewer 
84   SoQtExaminerViewer *b = new SoQtExaminerViewer(window);
85    b->setSceneGraph(root);
86    b->setHeadlight(FALSE);
87    b->show();
88 
89   // Show windows and wait for "Exit" 
90   SoQt::show(window);
91   SoQt::mainLoop();
92 
93   // Delete viewer and scene reference
94   delete b;
95   root->unref();
96 
97   return 0;
98 }