#include
float fTranslate; float fRotate;
float fScale=1.0f;//set inital scale value to 1.0f
bool bPersp=false; bool bAnim=false; bool bWire=false;
int wHeight=0; int wWidth=0;
//todo
//hint:some additional parameters may needed here when you operate the teapot
void Draw_Leg() {
glScalef(1,1,3);
glutSolidCube(1.0f); //glutWireCone(1.0f); }
//定义操作茶壶的操作参数 int tx=1; int ty=0; int tz=0;
int tangle=90;
//定义设置scale的参数 float sx=0.3f; float sy=0.3f; float sz=0.3f;
void Draw_Scene() {
glPushMatrix(); glTranslatef(0,0,5);
glRotatef(tangle,tx,ty,tz); // glutSolidTeapot(1);
glutSolidSphere(1.0f,10,10);
glPopMatrix();
glPushMatrix();
glTranslatef(0,0,3.5); glScalef(5,4,1); glutSolidCube(1.0); glPopMatrix(); //leg1
glPushMatrix();
glTranslatef(1.5,1,1.5); Draw_Leg(); glPopMatrix(); //leg2
glPushMatrix();
glTranslatef(-1.5,1,1.5); Draw_Leg(); glPopMatrix(); //leg3
glPushMatrix();
glTranslatef(1.5,-1,1.5); Draw_Leg(); glPopMatrix(); //leg4
glPushMatrix();
glTranslatef(-1.5,-1,1.5); Draw_Leg(); glPopMatrix(); }
void updateView(int width,int height) {
glViewport(0,0,width,height);//reset the current viewport
glMatrixMode(GL_PROJECTION);//select the projection matrix glLoadIdentity();//reset the projection matrix float whRatio=(GLfloat)width/(GLfloat)height; if(bPersp) {
//todo when 'p'operation ,hint:use function glupersPective } else
glOrtho(-3,3,-3,3,-100,100);
glMatrixMode(GL_MODELVIEW);//select the modelview matrix
}
void reshape(int width,int height) {
if(height==0)//prevent a divide by zero by {
height=1; }
wHeight=height; wWidth=width;
updateView(wHeight,wWidth); }
void idle() {
glutPostRedisplay(); }
float eye[]={0,0,8}; float center[]={0,0,0};
//todo:hint:you may need another array when you operate the teapot void key(unsigned char k,int x,int y) {
switch(k) {
case 27:
case 'q':{exit(0);break;}
case 'p':{bPersp=!bPersp;updateView(wHeight,wWidth);break;} case ' ':{bAnim=!bAnim;break;} case 'o':{bWire=!bWire;break;}
case 'a':{center[0]=center[0]+1;break;}//todo ,hint:eye[]and center[]are the keys to solve the problems
case 'd':{center[0]=center[0]-1;break;} case 'w':{center[2]=center[2]+1;break;} case 's':{center[2]=center[2]-1;break;} case 'z':{center[1]=center[1]+1;break;} case 'c':{center[1]=center[1]-1;break;}
case 'r':{center[0]=0;center[1]=0;center[2]=0;};//恢复原状 //茶壶相关操作 case 'j':{tx++;break;} case 'l':{tx--;break;}
case 'i':{ty++;break;} case 'k':{ty--;break;} case 'n':{tz++;break;} case 'm':{tz--;ty--;break;}
case 'g':{sx=sy=sz=sx+0.05;break;}//放大 case 'f':{sx=sy=sz=sx-0.05;break;}//缩小
} }
void redraw() {
glClear(GL_COLOR_BUFFER_BIT|GL_DEPTH_BUFFER_BIT); glLoadIdentity();
gluLookAt(eye[0],eye[1],eye[2],center[0],center[1],center[2],0,1,0);//场景（0，0,0）扥视点中心（0,5,50）Y轴向上 if(bWire) {
glPolygonMode(GL_FRONT_AND_BACK,GL_LINE);
} else {
glPolygonMode(GL_FRONT_AND_BACK,GL_FILL); }
glEnable(GL_DEPTH_TEST); glEnable(GL_LIGHTING);
GLfloat white[]={1.0,1.0,1.0,1.0}; GLfloat light_pos[]={5,5,5,1};
glLightfv(GL_LIGHT0,GL_POSITION,light_pos); glLightfv(GL_LIGHT0,GL_AMBIENT,white); glEnable(GL_LIGHT0);
glRotatef(fRotate,0,0,1.0f);//ratate around y axis glRotatef(-90,1,0,0); glScalef(sx,sy,sz); Draw_Scene();
if(bAnim)
fRotate+=0.3f;
//todo hint:when you want to rotate the teepot you may like to add another line here =
glutSwapBuffers(); }
int main(int argc,char*argv[]) {
glutInit(&argc,argv);
glutInitDisplayMode(GLUT_RGBA|GLUT_DEPTH|GLUT_DOUBLE); glutInitWindowSize(480,480);
int windowHandle=glutCreateWindow(\
glutDisplayFunc(redraw); glutReshapeFunc(reshape); glutKeyboardFunc(key); glutIdleFunc(idle); glutMainLoop(); return 0; }