opengl实验四【太阳系】

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#include

#pragma comment(lib,"glaux.lib") //将glaux.lib连接到工程enum //枚举鼠标变量

{

BUTTON_LEFT ,//鼠标左键

};

int mButton = -1;

int mOldY, mOldX;

float z=0,c=0;

float eye[3] = {0.0f, 0.0f, 2.0f}; //观察视角

float rot[3] = {45.0f, 45.0f, 0.0f}; //旋转变量

const int GL_WIN_WIDTH = 800; //窗口大小

const int GL_WIN_HEIGHT = 600;

const int GL_WIN_INITIAL_X = 0;

const int GL_WIN_INITIAL_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_TexturesArray[7];//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 CreatePopMenu()//生成弹出式菜单函数

{

int nMainMenu;//主菜单变量

nMainMenu=glutCreateMenu(ProcessMenu);//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

glutAttachMenu(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的幂{

AUX_RGBImageRec *pImage = NULL;

pImage = auxDIBImageLoad(filename); // 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)

glBindT exture (GL_TEXTURE_2D,texture);// 捆绑贴图(纹理) gluBuild2DMipmaps(GL_TEXTURE_2D,4, //建立图形

pImage->sizeX, // 图形宽pImage->sizeX

pImage->sizeY, // 图形高pImage->sizeY,

GL_RGB, GL_UNSIGNED_BYTE,

pImage->data // 图形数据

);

free(pImage->data); // 释放位图数据占据的内存资源free(pImage);

return true; // 返回成功

}

void Init()

{

glEnable(GL_DEPTH_TEST); //开启深度缓冲glClearColor(0.0,0.0,0.0,1.0);

glEnable(GL_TEXTURE_2D); //启用二维文理

//----------------载入图片--------------

LoadBMP("data/11.bmp",g_TexturesArray[0]); LoadBMP("data/12.bmp",g_TexturesArray[1]); LoadBMP("data/13.bmp",g_TexturesArray[2]); LoadBMP("data/14.bmp",g_TexturesArray[3]); LoadBMP("data/15.bmp",g_TexturesArray[4]); LoadBMP("data/16.bmp",g_TexturesArray[5]); LoadBMP("data/17.bmp",g_TexturesArray[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glLoadIdentity(); //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

glTranslatef (-eye[0], -eye[1], -10); //视口

glBindT exture(GL_TEXTURE_2D, g_TexturesArray[0]);

//----------------背景------------

glBegin(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);

glEnd();

glPopMatrix(); //出栈

glPushMatrix(); //入栈

glTranslatef (-eye[0], -eye[1], -eye[2]);

glRotatef(rot[0], 1.0f, 0.0f, 0.0f);

glRotatef(rot[1], 0.0f, 1.0f, 0.0f);

glRotatef(rot[2], 0.0f, 0.0f, 1.0f);

//---------------太阳--------------

if(iMode==1)

{

GLUquadricObj * quadric1; //建立一个曲面对象指针

quadric1 = 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glBindT exture(GL_TEXTURE_2D, g_TexturesArray[1]);//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);

glBegin(GL_LINE_LOOP);

for(int j=0; j

glVertex3f(R*cos(2*Pi/n*j),0,R*sin(2*Pi/n*j)); glEnd();

glEnable(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);

glBegin(GL_LINE_LOOP);

for(j=0; j

glVertex3f(0.7*cos(2*Pi/n*j),0,0.7*sin(2*Pi/n*j)); glEnd();

glEnable(GL_TEXTURE_2D);//启用纹理

//------------------土星--------------------------- glPushMatrix();//入栈

glRotatef(z, 0.0f, 1.0f, 0.0f);

glTranslatef (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gluQuadricDrawStyle(quadric2,GLU_FILL); //用面填充绘制场景glBindT exture(GL_TEXTURE_2D, g_TexturesArray[2]);//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-----------------

glPushMatrix();//入栈

glRotatef(c, 0.0f, 0.0f, 1.0f);

glTranslatef (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glBindT exture(GL_TEXTURE_2D, g_TexturesArray[3]);//绑定纹理gluSphere(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);

glBegin(GL_LINE_LOOP);

for(j=0; j

glVertex3f(0.25*cos(2*Pi/n*j),0.25*sin(2*Pi/n*j),0);

glEnd();

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);

glTranslatef (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); //建立纹理坐标gluQuadricDrawStyle(quadric4,GLU_FILL); //用面填充绘制场景glBindT exture(GL_TEXTURE_2D, g_TexturesArray[4]);//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

//----------------土星二号卫星轨道-------------------

glDisable(GL_TEXTURE_2D);//取消纹理

glColor3f(1.0,1.0,1.0);

glBegin(GL_LINE_LOOP);

for(j=0; j

glVertex3f(0,0.25*cos(2*Pi/n*j),0.25*sin(2*Pi/n*j));

glEnd();

glEnable(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(int i=0; i

{ glBegin(GL_LINE_LOOP);

for(int j=0; j

glVertex3f((r+i*0.004)*cos(2*Pi/n*j),0,(r+i*0.004)*sin(2*Pi/n*j));

glEnd(); }

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);

glTranslatef (0, 0, 0.7);

glPushMatrix(); //入栈

glRotatef(c, 0.0f, 1.0f, 0.0f);

glRotatef(-90, 1.0f, 0.0f, 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glBindT exture(GL_TEXTURE_2D, g_TexturesArray[5]);//绑定纹理gluSphere(quadric5,0.1f,64,64);//画一个填充地球

}

else if(iMode==2)

{

glDisable(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, 0.0f, 0.0f);

glTranslatef (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gluQuadricTexture(quadric6,GLU_TRUE); //建立纹理坐标gluQuadricDrawStyle(quadric6,GLU_FILL); //用面填充绘制场景glBindT exture(GL_TEXTURE_2D, g_TexturesArray[6]);//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_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);

glBegin(GL_LINE_LOOP);

for(j=0; j

glVertex3f(0,0.15*cos(2*Pi/n*j),0.15*sin(2*Pi/n*j)); glEnd();

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 < 3; i ++) //图像旋转一周后回到原地if (v[i] > 360 || v[i] < -360)

v[i] = 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{

rot[0] -= (mOldY - y);

rot[1] -= (mOldX - x);

clamp (rot);

}

mOldX = x;

mOldY = y;

}

void glutMouse(int button, int state, int x, int y)//鼠标控制函数{

if(state == GLUT_DOWN)

{

mOldX = x;

mOldY = y;

mButton = BUTTON_LEFT;

} else if (state == GLUT_UP)

mButton = -1;

}

void glutKeyboard(unsigned char key, int x, int y) //键盘控制函数{

switch (key)

{

case 's': //按S键放大图像

case 'S':eye[2] -= 0.05;break;

case 'W': //按W键缩小图像

case 'w':eye[2] += 0.05;break;

}

int main(int argc, char** argv) //主函数

{

glutInitDisplayMode( GLUT_DOUBLE | GLUT_DEPTH | GLUT_RGBA); glutInitWindowPosition( GL_WIN_INITIAL_X, GL_WIN_INITIAL_Y ); glutInitWindowSize( GL_WIN_WIDTH, GL_WIN_HEIGHT );

glutInit( &argc, argv ); glutCreateWindow("太阳系"); glutDisplayFunc(glutDisplay); glutIdleFunc(glutDisplay); glutReshapeFunc(glutResize); Init();

glutMouseFunc(glutMouse); glutMotionFunc(glutMotion); glutKeyboardFunc(glutKeyboard); CreatePopMenu(); glutMainLoop();

return 0;

}