opengl实验四讲解

1、学院姓名：专业 班学号教师评定：#i nclude #include #in elude #i nclude #in elude /将glaux.lib连接到工程/枚举鼠标变量#pragma comme nt(lib,glaux.lib) enumBUTTON_LEFT ,/ 鼠标左键;int mButt on = -1;int mOldY, mOldX;float z=0,c=0;float eye3 = 0.0f, 0.0f, 2.0f;/ 观察视角float rot3 = 45.0f, 45.0f, 0.0f; / 旋转变量const int GL_WIN_WIDTH = 800;窗口大

2、小const int GL_WIN_HEIGHT = 600;const int GL WIN INITIAL X = 0;const int GL_WINNITIAL_Y = 0;const int n = 1000,m=20;const float R = 1.2f,r=0.15f; 半径const float Pi = 3.1415926536f;GLuint g_TexturesArray7; 纹理指针int iMode=1;void ProcessMenu(int value)/ 弹出处理函数 iMode=value;glutPostRedisplay(); 强制刷新显示 void

3、CreatePopMenu()生成弹出式菜单函数 int nMainMenu;主菜单变量n Mai nMenu=glutCreateMe nu(ProcessMe nu);生成一个主菜单并指定菜单处理函数glutAddMenuEntry（填充,1）;添加一个主菜单glutAddMenuEntry（轮廓,2）;添加一个主菜单glutAttachMe nu（GLUT_RIGHT_BUTTON）; 指定激活菜单的鼠标右键 bool LoadBMP(char *filename, GLuint &texture)/调贴图大小为 2 的幕AUX_RGBImageRec *pImage = NULL;pI

4、mage = auxDIBImageLoad(file name); /装入位图 if(pImage = NULL) return false; / 位图没装入返回错误 glGenTextures(1, &texture);/ 生成贴图(纹理)glBindTexture(GL_TEXTURE_2D,texture);捆绑贴图(纹理)gluBuild2DMipmaps(GL_TEXTURE_2D,4,建立图形plmage-sizeX,/ 图形宽 plmage-sizeXplmage-sizeY ,/ 图形高 plmage-sizeY ,GL_RGB, GL_UNSIGNED_BYTE, pIma

5、ge-data/ 图形数据);/释放位图数据占据的内存资源/返回成功free(pImage-data); free(pImage); return true; void Init()glE nable(GL_DEPTH_TEST);/ 开启深度缓冲glClearColor(0.0,0.0,0.0,1.0);glE nable(GL_TEXTURE_2D); / 启用二维文理/-载入图片LoadBMP(data/11.bmp,g_TexturesArray0);LoadBMP(data/12.bmp,g_TexturesArray1);LoadBMP(data/13.bmp,g_Textures

6、Array2);LoadBMP(data/14.bmp,g_TexturesArray3);LoadBMP(data/15.bmp,g_TexturesArray4);LoadBMP(data/16.bmp,g_TexturesArra y5);LoadBMP(data/17.bmp,g_TexturesArra y 6); void glutResize(int width, int height)/ 重置 OpenGL 窗口大小 glViewport(0, 0, width, height);/ 重置当前视口glMatrixMode(GL_PROJECTION);选择投影矩阵glLoadl

7、de ntity();/ 重置投影矩阵gluPerspective(45.0, (float)width/(float)height, 1.0, 300.0);/ 设置视口大小void glutDisplay(void)/ 显示函数glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);glPolygonMode(GL_FRONT_AND_BACK,GL_FILL);/ 表示物体的前向和后向面用填充面显示glPushMatrix(); 入栈glTra nslatef (-eye0, -eye1, -10);视口glBi ndTexture(GL_T

8、EXTURE_2D, g_TexturesArray0);/背景glBegi n(GL_QUADS);glTexCoord2f(1.0f, 0.0f);glVertex3f(8,-8,0);glTexCoord2f(1.0f, 1.0f);glVertex3f(8,8,0);glTexCoord2f(0.0f, 1.0f); glVertex3f(-8,8,0);glTexCoord2f(0.0f, 0.0f); glVertex3f(-8,-8,0); glE nd();glPopMatrix(); / 出栈glPushMatrix();入栈glTra nslatef (-eye0, -ey

9、e1, -eye2);glRotatef(rot0, 1.0f, 0.0f, 0.0f);glRotatef(rot1, 0.0f, 1.0f, 0.0f);glRotatef(rot2, 0.0f, 0.0f, 1.0f);/太阳if(iMode=1)GLUquadricObj * quadricl;建立一个曲面对象指针quadricl = gluNewQuadric();建立一个曲面对象指针gluQuadricTexture(quadric1,GLU_TRUE);/ 建立纹理坐标gluQuadricDrawStyle(quadric1,GLU_FILL);用面填充绘制场景glB in dT

10、exture(GL_TEXTURE_2D, g_TexturesArray1); 绑定纹理 gluSphere(quadric1,0.3f,64,64); 画一个填充太阳else if(iMode=2)glDisable(GL_TEXTURE_2D); 取消纹理 glColor3f(1.0,1.0,1.0);glutWireSphere(0.3f,32,32); 画一个线条太阳glEnable(GL_TEXTURE_2D); 启用纹理/土星公转轨道glDisable(GL_TEXTURE_2D); 取消纹理 glColor3f(1.0,1.0,1.0);glBegi n( GL_LINE_LO

11、OP);for(i nt j=0; j n; j+)glVertex3f(R*cos(2*Pi/n*j),0,R*si n(2*Pi/n*j);glE nd();glE nable(GL_TEXTURE_2D); 启用纹理/地球公转轨道glDisable(GL_TEXTURE_2D); 取消纹理 glColor3f(1.0,1.0,1.0);glBegi n( GL_LINE_LOOP);for(j=0; j n; j+)glVertex3f(0.7*cos(2*Pi/n*j),0,0.7*si n(2*Pi/n*j);glE nd();glE nable(GL_TEXTURE_2D); 启用

12、纹理/ 土星glPushMatrix(); 入栈glRotatef(z, 0.0f, 1.0f, 0.0f);glTra nslatef (1.2, 0, 0);glPushMatrix();入栈glRotatef(c, 0.0f, 1.0f, 0.0f);glRotatef(90, 1.0f, 0.0f, 0.0f);if(iMode=1)GLUquadricObj * quadric2;/建立一个曲面对象指针quadric2 = gluNewQuadric();建立一个曲面对象指针gluQuadricTexture(quadric2,GLU_TRUE);建立纹理坐标gluQuadricDr

13、awStyle(quadric2,GLU_FILL);用面填充绘制场景glB in dTexture(GL_TEXTURE_2D, g_TexturesArray2);绑定纹理gluSphere(quadric2,0.12f,64,64); 画一个填充土星else if(iMode=2)glDisable(GL_TEXTURE_2D); 取消纹理 glColor3f(1.0,1.0,1.0);glutWireSphere(0.12f,25,25); 画一个线条土星glEnable(GL_TEXTURE_2D); 启用纹理glPopMatrix(); / 出栈/土星一号卫星glPushMatri

14、x();/ 入栈glRotatef(c, O.Of, O.Of, 1.0f);gITra nslatef (0.25, 0, 0);if(iMode=1)GLUquadricObj * quadric3;/建立一个曲面对象指针quadric3 = gluNewQuadric();建立一个曲面对象指针gluQuadricTexture(quadric3,GLU_TRUE); / 建立纹理坐标 gluQuadricDrawStyle(quadric3,GLU_FILL);用面填充绘制场景glBi ndTexture(GL_TEXTURE_2D, g_TexturesArray3);绑定纹理gluS

15、phere(quadric3,0.03f,64,64); 画一个填充卫星else if(iMode=2)glDisable(GL_TEXTURE_2D); 取消纹理 glColor3f(1.0,1.0,1.0);glutWireSphere(0.03f,25,25);/ 画一个线条卫星glEnable(GL_TEXTURE_2D); 启用纹理glPopMatrix();/ 出栈/土星一号卫星轨道glDisable(GL_TEXTURE_2D); 取消纹理 glColor3f(1.0,1.0,1.0);glBegi n( GL_LINE_LOOP);for(j=0; j n; j+)glVert

16、ex3f(0.25*cos(2*Pi/n*j),0.25*si n(2*Pi/n*j),0);glE nd();glEnable(GL_TEXTURE_2D); / 启用纹理/ 土星二号卫星glPushMatrix(); / 入栈glRotatef(c, 1.0f, 0.0f, 0.0f);glTra nslatef (0, 0, 0.25);if(iMode=1)GLUquadricObj * quadric4;/建立一个曲面对象指针quadric4 = gluNewQuadric();建立一个曲面对象指针gluQuadricTexture(quadric4,GLU_TRUE); / 建立纹

17、理坐标 gluQuadricDrawStyle(quadric4,GLU_FILL);用面填充绘制场景glBi ndTexture(GL_TEXTURE_2D, g_TexturesArray4);绑定纹理gluSphere(quadric4,0.03f,64,64);/ 画一个填充卫星else if(iMode=2)glDisable(GL_TEXTURE_2D); 取消纹理glColor3f(1.0,1.0,1.0);glutWireSphere(0.03f,25,25); 画一个线条卫星glEnable(GL_TEXTURE_2D); 启用纹理glPopMatrix(); 出栈/土星二号

18、卫星轨道glDisable(GL_TEXTURE_2D); 取消纹理 glColor3f(1.0,1.0,1.0);glBegi n( GL_LINE_LOOP);for(j=0; j n; j+)glVertex3f(0,0.25*cos(2*Pi/n*j),0.25*si n(2*Pi/n*j);glE nd();glE nable(GL_TEXTURE_2D); 启用纹理/ 土星的行星环glDisable(GL_TEXTURE_2D); 取消纹理 glColor3f(1.0,1.0,1.0);for(i nt i=0; im; i+) glBegi n(GL_LINE_LOOP);for

19、(i nt j=0; j n; j+) glVertex3f(r+i*0.004)*cos(2*Pi/n*j),0,( r+i*0.004)*si n(2*Pi/n*j); glE nd(); glEnable(GL_TEXTURE_2D); / 启用纹理 glPopMatrix();/ 出栈/地球glPushMatrix();/ 入栈glRotatef(z*2, 0.0f, 1.0f, 0.0f);glTra nslatef (0, 0, 0.7);glPushMatrix(); 入栈glRotatef(c, 0.0f, 1.0f, 0.0f);glRotatef(-90, 1.0f, 0.

20、0f, 0.0f);if(iMode=1)GLUquadricObj * quadric5; /建立一个曲面对象指针quadric5 = gluNewQuadric();建立一个曲面对象指针gluQuadricTexture(quadric5,GLU_TRUE); / 建立纹理坐标 gluQuadricDrawStyle(quadric5,GLU_FILL);用面填充绘制场景glBi ndTexture(GL_TEXTURE_2D, g_TexturesArray5);绑定纹理gluSphere(quadric5,0.1f,64,64); 画一个填充地球else if(iMode=2)glDi

21、sable(GL_TEXTURE_2D); 取消纹理 glColor3f(1.0,1.0,1.0);glutWireSphere(0.1f,25,25); 画一个线条地球glEnable(GL_TEXTURE_2D); 启用纹理glPopMatrix(); / 出栈/月亮glPushMatrix(); 入栈glRotatef(c, 1.0f, O.Of, 0.0f);glTra nslatef (0, 0, 0.15);if(iMode=1)GLUquadricObj * quadric6;/建立一个曲面对象指针quadric6 = gluNewQuadric();建立一个曲面对象指针gluQ

22、uadricTexture(quadric6,GLU_TRUE);/ 建立纹理坐标gluQuadricDrawStyle(quadric6,GLU_FILL);用面填充绘制场景glB in dTexture(GL_TEXTURE_2D, g_TexturesArray6);绑定纹理gluSphere(quadric6,0.025f,64,64); 画一个填充月亮else if(iMode=2)glDisable(GL_TEXTURE_2D); 取消纹理 glColor3f(1.0,1.0,1.0);glutWireSphere(0.025f,25,25); 画一个线条月亮glEnable(GL

23、_TEXTURE_2D); 启用纹理glPopMatrix();/ 出栈/月亮轨道glDisable(GL_TEXTURE_2D); 取消纹理 glColor3f(1.0,1.0,1.0);glBegi n( GL_LINE_LOOP);for(j=0; j n; j+)glVertex3f(0,0.15*cos(2*Pi/n*j),0.15*si n(2*Pi/n*j);glE nd();glEnable(GL_TEXTURE_2D); / 启用纹理 glPopMatrix(); 出栈z+=0.05;c+=0.3;glPopMatrix(); 出栈glFlush();glutSwapBuffers(); void clamp(float *v)int i;for (i = 0; i 360 | vi -360) vi = 0；void glutMotion(int x, int y) / 图像移动函数if (mButton = BUTTON_LEFT)/按下左键时可以任意旋转图像rot0 -= (mOldY - y);rot1 -= (mOldX - x);clamp (rot);mOldX = x;mOldY = y;void glutMou