1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
|
#include <osgViewer/Viewer>
#include <osgViewer/ViewerEventHandlers>
#include <osgDB/ReadFile>
#include <osgGA/TrackballManipulator>
#include <osgGA/StateSetManipulator>
#include <osg/Geode>
#include <osg/Geometry>
#include <osg/Material>
#include <osg/Shape>
#include <osg/ShapeDrawable>
#include <osgText/Text3D>
#include <iostream>
#include <sstream>
osg::Group* test_create3DText(const osg::Vec3& center,float radius)
{
osg::Geode* geode = new osg::Geode;
float characterSize=radius*0.2f;
float characterDepth=characterSize*0.2f;
osg::Vec3 pos(center.x()-radius*.5f,center.y()-radius*.5f,center.z()-radius*.5f);
#define SHOW_INTESECTION_CEASH
#ifdef SHOW_INTESECTION_CEASH
osgText::Text3D* text3 = new osgText::Text3D;
text3->setFont("fonts/dirtydoz.ttf");
text3->setCharacterSize(characterSize);
text3->setCharacterDepth(characterDepth);
text3->setPosition(pos);
text3->setDrawMode(osgText::Text3D::TEXT | osgText::Text3D::BOUNDINGBOX);
text3->setAxisAlignment(osgText::Text3D::XZ_PLANE);
text3->setText("CRAS H"); //intersection crash
geode->addDrawable(text3);
#else
osgText::Text3D* text7 = new osgText::Text3D;
text7->setFont("fonts/times.ttf");
text7->setCharacterSize(characterSize);
text7->setCharacterDepth(characterSize*2.2f);
text7->setPosition(center - osg::Vec3(0.0, 0.0, 0.6));
text7->setDrawMode(osgText::Text3D::TEXT | osgText::Text3D::BOUNDINGBOX);
text7->setAxisAlignment(osgText::Text3D::SCREEN);
text7->setCharacterSizeMode(osgText::Text3D::OBJECT_COORDS);
text7->setText("ABCDE"); //wrong intersection
geode->addDrawable(text7);
#endif
osg::ShapeDrawable* shape = new osg::ShapeDrawable(new osg::Sphere(center,characterSize*0.2f));
shape->getOrCreateStateSet()->setMode(GL_LIGHTING,osg::StateAttribute::ON);
geode->addDrawable(shape);
osg::Group* rootNode = new osg::Group;
rootNode->addChild(geode);
#define SHOW_WRONG_NORMAL
#ifdef SHOW_WRONG_NORMAL
osg::Material* front = new osg::Material; //
front->setAlpha(osg::Material::FRONT_AND_BACK,1);
front->setAmbient(osg::Material::FRONT_AND_BACK,osg::Vec4(0.2,0.2,0.2,1.0));
front->setDiffuse(osg::Material::FRONT_AND_BACK,osg::Vec4(.0,.0,1.0,1.0));
rootNode->getOrCreateStateSet()->setAttributeAndModes(front);
#else
osg::StateSet* stateset = new osg::StateSet; //Show wireframe
osg::PolygonMode* polymode = new osg::PolygonMode;
polymode->setMode(osg::PolygonMode::FRONT_AND_BACK,osg::PolygonMode::LINE);
stateset->setAttributeAndModes(polymode,osg::StateAttribute::OVERRIDE|osg::StateAttribute::ON);
rootNode->setStateSet(stateset);
#endif
return rootNode;
}
//////////////////////////////////////////////////////////////////////////
#include <osg/PositionAttitudeTransform>
#include <osg/ShapeDrawable>
class CInputHandler : public osgGA::GUIEventHandler
{
public:
CInputHandler( osg::PositionAttitudeTransform* pPatSphere )
{
m_rPatSphere = pPatSphere;
}
virtual bool handle( const osgGA::GUIEventAdapter& ea, osgGA::GUIActionAdapter& aa, osg::Object* pObject, osg::NodeVisitor* pNodeVisitor )
{
osgViewer::Viewer* pViewer = dynamic_cast<osgViewer::Viewer*>(&aa);
if ( !pViewer )
{
return false;
}
if ( ea.getEventType()==osgGA::GUIEventAdapter::PUSH )
{
osgViewer::ViewerBase::Cameras cams;
pViewer->getCameras( cams );
float x = ea.getXnormalized();
float y = ea.getYnormalized();
osgUtil::LineSegmentIntersector* picker = new osgUtil::LineSegmentIntersector( osgUtil::Intersector::PROJECTION, x, y );
osgUtil::IntersectionVisitor iv( picker );
cams[0]->accept( iv );
if ( picker->containsIntersections() )
{
osgUtil::LineSegmentIntersector::Intersection intersection = picker->getFirstIntersection();
osg::Vec3 v = intersection.getWorldIntersectPoint();
m_rPatSphere->setPosition( v );
}
return true; // return true, event handled
}
return false;
}
private:
osg::ref_ptr<osg::PositionAttitudeTransform> m_rPatSphere;
};
//////////////////////////////////////////////////////////////////////////
int main_test(int, char**)
{
osgViewer::Viewer viewer;
viewer.setUpViewInWindow(99,99,666,666, 0);
osg::ref_ptr<osg::PositionAttitudeTransform> rPat = new osg::PositionAttitudeTransform;
// add the handler to the viewer
viewer.addEventHandler( new CInputHandler(rPat.get()) );
// create a group to contain our scene and sphere
osg::Group* pGroup = new osg::Group;
// create sphere
osg::Geode* pGeodeSphere = new osg::Geode;
pGeodeSphere->addDrawable( new osg::ShapeDrawable( new osg::Sphere(osg::Vec3(0.0f,0.0f,0.0f),0.01f) ) );
rPat->addChild( pGeodeSphere );
pGroup->addChild( rPat.get() );
osg::Vec3 center(0.0f,0.0f,0.0f);
float radius = 1.0f;
osg::Group* root = new osg::Group;
root->addChild(test_create3DText(center, radius));
//viewer.setSceneData(root);
pGroup->addChild(root);
viewer.setSceneData(pGroup);
viewer.setCameraManipulator(new osgGA::TrackballManipulator());
viewer.addEventHandler( new osgGA::StateSetManipulator(viewer.getCamera()->getOrCreateStateSet()) );
viewer.addEventHandler(new osgViewer::ThreadingHandler);
viewer.addEventHandler(new osgViewer::WindowSizeHandler);
viewer.addEventHandler(new osgViewer::StatsHandler);
return viewer.run();
}
|
