1 | |
---|
2 | |
---|
3 | |
---|
4 | |
---|
5 | |
---|
6 | |
---|
7 | |
---|
8 | |
---|
9 | |
---|
10 | |
---|
11 | |
---|
12 | |
---|
13 | |
---|
14 | |
---|
15 | |
---|
16 | |
---|
17 | |
---|
18 | |
---|
19 | #include <math.h> |
---|
20 | |
---|
21 | #include <osg/GL> |
---|
22 | #include <osg/Group> |
---|
23 | #include <osg/Geode> |
---|
24 | #include <osg/Geometry> |
---|
25 | #include <osg/Texture2D> |
---|
26 | #include <osg/TexEnv> |
---|
27 | #include <osg/StateSet> |
---|
28 | #include <osg/Matrix> |
---|
29 | |
---|
30 | #include <osgDB/ReadFile> |
---|
31 | |
---|
32 | #ifdef _MSC_VER |
---|
33 | #pragma warning( disable : 4244 ) |
---|
34 | #pragma warning( disable : 4305 ) |
---|
35 | #endif |
---|
36 | |
---|
37 | using namespace osg; |
---|
38 | |
---|
39 | extern void getDatabaseCenterRadius( float dbcenter[3], float *dbradius ); |
---|
40 | |
---|
41 | static float radius = 2.0; |
---|
42 | static float dbcenter[3], dbradius; |
---|
43 | |
---|
44 | static void conv( const Vec3& a, const Matrix& mat, Vec3& b ) |
---|
45 | { |
---|
46 | int i; |
---|
47 | Vec3 t; |
---|
48 | |
---|
49 | for( i = 0; i < 3; i++ ) |
---|
50 | { |
---|
51 | t[i] = (a[0] * mat(0,i)) + |
---|
52 | (a[1] * mat(1,i)) + |
---|
53 | (a[2] * mat(2,i)) + |
---|
54 | mat(3,i); |
---|
55 | } |
---|
56 | b[0] = t[0]; |
---|
57 | b[1] = t[1]; |
---|
58 | b[2] = t[2]; |
---|
59 | } |
---|
60 | |
---|
61 | |
---|
62 | Node *makeTank( void ) |
---|
63 | { |
---|
64 | |
---|
65 | Geode *geode = new Geode; |
---|
66 | |
---|
67 | getDatabaseCenterRadius( dbcenter, &dbradius ); |
---|
68 | |
---|
69 | Matrix mat( |
---|
70 | 0.05, 0, 0, 0, |
---|
71 | 0, 0.05, 0, 0, |
---|
72 | 0, 0, 0.05, 0, |
---|
73 | 1.5999 - 0.3, |
---|
74 | 3.1474, |
---|
75 | dbcenter[2] + 0.6542 - 0.09, |
---|
76 | 1 |
---|
77 | ); |
---|
78 | |
---|
79 | |
---|
80 | Vec3Array& vc = *(new Vec3Array(42+22)); |
---|
81 | Vec2Array& tc = *(new Vec2Array(42+22)); |
---|
82 | |
---|
83 | Geometry *gset = new Geometry; |
---|
84 | gset->setVertexArray( &vc ); |
---|
85 | gset->setTexCoordArray( 0, &tc ); |
---|
86 | |
---|
87 | |
---|
88 | unsigned int i, c = 0; |
---|
89 | for( i = 0; i <= 360; i += 18 ) |
---|
90 | { |
---|
91 | float x, y, z; |
---|
92 | float s, t; |
---|
93 | float theta = osg::DegreesToRadians((float)i); |
---|
94 | |
---|
95 | s = (float)i/90.0; |
---|
96 | t = 1.0; |
---|
97 | |
---|
98 | x = radius * cosf( theta ); |
---|
99 | y = radius * sinf( theta ); |
---|
100 | z = 1.0; |
---|
101 | |
---|
102 | vc[c][0] = x; |
---|
103 | vc[c][1] = y; |
---|
104 | vc[c][2] = z; |
---|
105 | |
---|
106 | tc[c][0] = s; |
---|
107 | tc[c][1] = t; |
---|
108 | |
---|
109 | c++; |
---|
110 | |
---|
111 | t = 0.0; |
---|
112 | z = 0.0; |
---|
113 | |
---|
114 | vc[c][0] = x; |
---|
115 | vc[c][1] = y; |
---|
116 | vc[c][2] = z; |
---|
117 | |
---|
118 | tc[c][0] = s; |
---|
119 | tc[c][1] = t; |
---|
120 | c++; |
---|
121 | } |
---|
122 | |
---|
123 | gset->addPrimitiveSet( new DrawArrays(PrimitiveSet::TRIANGLE_STRIP,0,c) ); |
---|
124 | |
---|
125 | |
---|
126 | |
---|
127 | int prev_c = c; |
---|
128 | |
---|
129 | vc[c][0] = 0.0f; |
---|
130 | vc[c][1] = 0.0f; |
---|
131 | vc[c][2] = 1.0f; |
---|
132 | |
---|
133 | tc[c][0] = 0.0f; |
---|
134 | tc[c][1] = 0.0f; |
---|
135 | c++; |
---|
136 | |
---|
137 | for( i = 0; i <= 360; i += 18 ) |
---|
138 | { |
---|
139 | float x, y, z; |
---|
140 | float s, t; |
---|
141 | float theta = osg::DegreesToRadians((float)i); |
---|
142 | |
---|
143 | |
---|
144 | |
---|
145 | s = cosf( theta ); |
---|
146 | t = sinf( theta ); |
---|
147 | |
---|
148 | x = radius * cosf( theta ); |
---|
149 | y = radius * sinf( theta ); |
---|
150 | z = 1.0; |
---|
151 | |
---|
152 | vc[c][0] = x; |
---|
153 | vc[c][1] = y; |
---|
154 | vc[c][2] = z; |
---|
155 | |
---|
156 | tc[c][0] = s; |
---|
157 | tc[c][1] = t; |
---|
158 | |
---|
159 | c++; |
---|
160 | } |
---|
161 | |
---|
162 | for( i = 0; i < c; i++ ) |
---|
163 | conv( vc[i], mat, vc[i] ); |
---|
164 | |
---|
165 | gset->addPrimitiveSet(new DrawArrays(PrimitiveSet::TRIANGLE_FAN,prev_c,c-prev_c)); |
---|
166 | |
---|
167 | |
---|
168 | |
---|
169 | |
---|
170 | Texture2D *tex = new Texture2D; |
---|
171 | |
---|
172 | tex->setWrap( Texture2D::WRAP_S, Texture2D::REPEAT ); |
---|
173 | tex->setWrap( Texture2D::WRAP_T, Texture2D::REPEAT ); |
---|
174 | tex->setImage(osgDB::readImageFile("Images/tank.rgb")); |
---|
175 | |
---|
176 | StateSet *dstate = new StateSet; |
---|
177 | dstate->setTextureAttributeAndModes(0, tex, StateAttribute::ON ); |
---|
178 | dstate->setTextureAttribute(0, new TexEnv ); |
---|
179 | |
---|
180 | gset->setStateSet( dstate ); |
---|
181 | geode->addDrawable( gset ); |
---|
182 | |
---|
183 | return geode; |
---|
184 | } |
---|