1 #include<windows.h> 2 #include<gl/glut.h> 3 #include<gl/gl.h> 4 #include<gl/glu.h> 5 6 //参数指定正方形的位置和大小 7 GLfloat x1=100.0f; 8 GLfloat y1=150.0f; 9 GLsizei rsize=50; 10 11 //正方形运动变化的步长 12 GLfloat xstep=1.0f; 13 GLfloat ystep=1.0f; 14 15 //窗口的大小 16 GLfloat windowWidth; 17 GLfloat windowHeight; 18 19 //画的物体 20 void DrawDUA(); 21 void DrawTR(); 22 23 //属性开关 24 void SunShine(void);//光照 25 26 //三维 27 GLfloat rtri; 28 GLfloat rquad; 29 30 //开关 31 BOOL Draw3D=true;//三维动画演示开关 32 BOOL Draw2D=false;//二维动画演示开关 33 BOOL DrawAtoms=false;//原子动画演示开关 34 35 36 //三维属性开关 37 BOOL AS=true;//透视投影开关 38 BOOL OR=false;//正交平行投影 39 BOOL LIGHT=true;//光照开关 40 41 42 43 void RenderScene(void) 44 { 45 if(Draw3D) 46 { 47 glClear(GL_COLOR_BUFFER_BIT|GL_DEPTH_BUFFER_BIT); 48 glMatrixMode(GL_MODELVIEW); 49 glLoadIdentity(); 50 if(LIGHT) 51 SunShine(); 52 53 glTranslatef(-1.5f,0.0f,-6.0f); 54 glRotatef(rtri,0.0f,1.0f,0.0f); 55 56 DrawTR(); 57 58 glLoadIdentity(); 59 glTranslatef(1.5f,0.0f,-6.0f); 60 glRotatef(rquad,1.0f,0.0f,0.0f); 61 glColor3f(0.5f,0.5f,1.0f); 62 63 64 DrawDUA(); 65 66 rtri+=1.0f; 67 rquad-=0.5f; 68 } 69 70 if(Draw2D) 71 { 72 glClear(GL_COLOR_BUFFER_BIT); 73 glColor3f(1.0f,0.0f,0.0f); 74 glRectf(x1,y1,x1+rsize,y1+rsize); 75 } 76 77 if(DrawAtoms) 78 { 79 //绕核旋转角度 80 static float fElect1=0.0f; 81 82 glClear(GL_COLOR_BUFFER_BIT|GL_DEPTH_BUFFER_BIT); 83 84 //重置模型视图矩阵 85 glMatrixMode(GL_MODELVIEW); 86 glLoadIdentity(); 87 if(LIGHT) 88 SunShine(); 89 90 //将图形沿Z轴负向移动 91 glTranslatef(0.0f,0.0f,-250.0f); 92 93 //绘制红色原子核 94 glColor3f(1.0f,0.0f,0.0f); 95 glutWireSphere(10.0f,15,15); 96 97 //绘制颜色变成绿色 98 glColor3f(0.0f,1.0f,0.0f); 99 100 //绘制第一个电子 101 //保存当前的模型视图矩阵 102 glPushMatrix(); 103 glRotatef(fElect1,0.0f,1.0f,0.0f);//绕y轴旋转一定角度 104 glTranslatef(90.0f,0.0f,0.0f);//平移一段距离 105 glutSolidSphere(6.0f,15,15);//画出电子 106 107 //恢复矩阵 108 glPopMatrix(); 109 glColor3f(0.0f,0.0f,1.0f);//绘制颜色变成蓝色 110 //第二个电子 111 glPushMatrix(); 112 glRotatef(45.0f,0.0f,0.0f,1.0f); 113 glRotatef(fElect1,0.0f,1.0f,0.0f); 114 glTranslatef(-70.0f,0.0f,0.0f); 115 glutSolidSphere(6.0f,15,15); 116 glPopMatrix(); 117 118 glColor3f(1.0f,1.0f,0.0f);//绘制颜色变成黄色 119 //第三个电子 120 glPushMatrix(); 121 glRotatef(-45.0f,0.0f,0.0f,1.0f); 122 glRotatef(fElect1,0.0f,1.0f,0.0f); 123 glTranslatef(0.0f,0.0f,60.0f); 124 glutSolidSphere(6.0f,15,15); 125 glPopMatrix(); 126 fElect1+=10.0f; 127 if(fElect1>360.0f) 128 fElect1=10.0f; 129 } 130 glutSwapBuffers(); 131 } 132 133 void ChangeSize(GLsizei w,GLsizei h) 134 { 135 if(h==0) 136 h==1; 137 138 //设置视区尺寸 139 glViewport(0,0,w,h); 140 glMatrixMode(GL_PROJECTION); 141 glLoadIdentity(); 142 143 if(Draw3D||DrawAtoms) 144 { 145 //修剪空间(透视投影) 146 if(AS) 147 { 148 GLfloat fAspect; 149 fAspect =(float)w/(float)h; 150 gluPerspective(45.0,fAspect,1.0,500.0); 151 } 152 153 154 155 //(正交平行投影) 156 if(OR) 157 { 158 if(w<=h) 159 glOrtho(-2.25,2.25,-2.25*h/w,2.25*h/w,-10.0,10.0); 160 else 161 glOrtho(-2.25*h/w,2.25*h/w,-2.25,2.25,-10.0,10.0); 162 } 163 164 165 166 } 167 168 if(Draw2D) 169 { 170 if(w<=h) 171 { 172 windowHeight=250.0f*h/w; 173 windowWidth=250.0f; 174 } 175 else 176 { 177 windowWidth=250.0f*w/h; 178 windowHeight=250.0f; 179 } 180 181 glOrtho(0.0f,windowWidth,0.0f,windowHeight,1.0f,-1.0f); 182 } 183 184 glMatrixMode(GL_MODELVIEW); 185 glLoadIdentity(); 186 } 187 188 void TimerFunction(int value) 189 { 190 if(x1>windowWidth-rsize||x1<0) 191 xstep=-xstep; 192 if(y1>windowHeight-rsize||y1<0) 193 ystep=-ystep; 194 195 x1+=xstep; 196 y1+=ystep; 197 198 glutPostRedisplay(); 199 glutTimerFunc(5,TimerFunction,1); 200 } 201 202 void SetupRC(void) 203 { 204 if(Draw3D||DrawAtoms) 205 { 206 glEnable(GL_DEPTH_TEST);//启用深度测试 207 glFrontFace(GL_CCW); 208 } 209 glClearColor(0.0f,0.0f,1.0f,1.0f); 210 } 211 void TimerFunc(int value) 212 { 213 glutPostRedisplay(); 214 if(Draw3D) 215 { 216 glutTimerFunc(1,TimerFunc,1); 217 } 218 if(DrawAtoms) 219 { 220 glutTimerFunc(100,TimerFunc,1); 221 } 222 223 } 224 int main(int argc,char* argv[]) 225 { 226 if(Draw2D) 227 { 228 glutInitDisplayMode(GLUT_DOUBLE|GLUT_RGB); 229 glutCreateWindow("Bounce"); 230 glutDisplayFunc(RenderScene); 231 glutReshapeFunc(ChangeSize); 232 glutTimerFunc(5,TimerFunction,1); 233 } 234 if(Draw3D||DrawAtoms) 235 { 236 glutInit(&argc,argv); 237 glutInitDisplayMode(GLUT_DOUBLE|GLUT_RGB|GLUT_DEPTH); 238 glutCreateWindow("原子示例"); 239 glutReshapeFunc(ChangeSize); 240 glutDisplayFunc(RenderScene); 241 if(DrawAtoms) 242 glutTimerFunc(100,TimerFunc,1); 243 else 244 glutTimerFunc(1,TimerFunc,1); 245 } 246 247 SetupRC(); 248 glutMainLoop(); 249 } 250 void DrawTR() 251 { 252 glBegin(GL_TRIANGLES); 253 // 254 glColor3f(1.0f,0.0f,0.0f); 255 glVertex3f(0.0f,1.0f,0.0f); 256 257 glColor3f(0.0f,1.0f,0.0f); 258 glVertex3f(-1.0f,-1.0f,1.0f); 259 260 glColor3f(0.0f,0.0f,1.0f); 261 glVertex3f(1.0f,-1.0f,1.0f); 262 263 // 264 glColor3f(1.0f,0.0f,0.0f); 265 glVertex3f(0.0f,1.0f,0.0f); 266 267 glColor3f(0.0f,0.0f,1.0f); 268 glVertex3f(1.0f,-1.0f,1.0f); 269 270 glColor3f(0.0f,1.0f,0.0f); 271 glVertex3f(1.0f,-1.0f,-1.0f); 272 273 // 274 glColor3f(1.0f,0.0f,0.0f); 275 glVertex3f(0.0f,1.0f,0.0f); 276 277 glColor3f(0.0f,1.0f,0.0f); 278 glVertex3f(1.0f,-1.0f,-1.0f); 279 280 glColor3f(0.0f,0.0f,1.0f); 281 glVertex3f(-1.0f,-1.0f,-1.0f); 282 283 // 284 glColor3f(1.0f,0.0f,0.0f); 285 glVertex3f(0.0f,1.0f,0.0f); 286 287 glColor3f(0.0f,0.0f,1.0f); 288 glVertex3f(-1.0f,-1.0f,-1.0f); 289 290 glColor3f(0.0f,1.0f,0.0f); 291 glVertex3f(-1.0f,-1.0f,1.0f); 292 293 glEnd(); 294 } 295 296 void DrawDUA() 297 { 298 glBegin(GL_QUADS); 299 300 glColor3f(0.0f,1.0f,0.0f); 301 glVertex3f(1.0f,1.0f,-1.0f); 302 glVertex3f(-1.0f,1.0f,-1.0f); 303 glVertex3f(-1.0f,1.0f,1.0f); 304 glVertex3f(1.0f,1.0f,1.0f); 305 306 glColor3f(1.0f,0.5f,0.0f); 307 glVertex3f(1.0f,-1.0f,1.0f); 308 glVertex3f(-1.0f,-1.0f,1.0f); 309 glVertex3f(-1.0f,-1.0f,-1.0f); 310 glVertex3f(1.0f,-1.0f,-1.0f); 311 312 glColor3f(1.0f,0.0f,0.0f); 313 glVertex3f(1.0f,1.0f,1.0f); 314 glVertex3f(-1.0f,1.0f,1.0f); 315 glVertex3f(-1.0f,-1.0f,1.0f); 316 glVertex3f(1.0f,-1.0f,1.0f); 317 318 glColor3f(1.0f,1.0f,0.0f); 319 glVertex3f(1.0f,-1.0f,-1.0f); 320 glVertex3f(-1.0f,-1.0f,-1.0f); 321 glVertex3f(-1.0f,1.0f,-1.0f); 322 glVertex3f(1.0f,1.0f,-1.0f); 323 324 glColor3f(0.0f,0.0f,1.0f); 325 glVertex3f(-1.0f,1.0f,1.0f); 326 glVertex3f(-1.0f,1.0f,-1.0f); 327 glVertex3f(-1.0f,-1.0f,-1.0f); 328 glVertex3f(-1.0f,-1.0f,1.0f); 329 glEnd(); 330 } 331 332 void SunShine(void) 333 { 334 335 GLfloat sun_light_position[]={0.0f,0.0f,0.0f,1.0f}; 336 GLfloat sun_light_ambient[]={0.0f,0.0f,0.0f,1.0f}; 337 GLfloat sun_light_diffuse[]={1.0f,1.0f,1.0f,1.0f}; 338 GLfloat sun_light_specular[]={1.0f,1.0f,1.0f,1.0f}; 339 340 glLightfv(GL_LIGHT0,GL_POSITION,sun_light_position); 341 glLightfv(GL_LIGHT0,GL_AMBIENT,sun_light_ambient); 342 glLightfv(GL_LIGHT0,GL_DIFFUSE,sun_light_diffuse); 343 glLightfv(GL_LIGHT0,GL_SPECULAR,sun_light_specular); 344 345 glEnable(GL_LIGHT0); 346 glEnable(GL_LIGHTING); 347 glEnable(GL_DEPTH_TEST); 348 }