蓝宝书opengl_opengl编程指南 pdf_opengl超级宝典(3)

{

glPushMatrix();

glTranslatef(0.0f,0.0f,-10.0f);

//初始化名称栈

glInitNames();

//往栈顶压栈，压如一个名称

glPushName(0);

glColor3f(1.0f,0.0f,0.0f);

//用当前名称SUN替换掉栈顶名称

glLoadName(SUN);

glutSolidSphere(1.0,26,26);

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

glTranslatef(2.0f,0.0f,0.0f);

glColor3f(0.0f,0.0f,1.0f);

//用EARTH替换掉栈顶名称

glLoadName(EARTH);

//glPushName(EARTH);

glutSolidSphere(0.3,26,26);

glTranslatef(1.0f,0.0f,0.0f);

glColor3f(0.25f,0.25f,0.75f);

//用当前名称MOON替换掉栈顶名称

glLoadName(MOON);

//glPushName(MOON);

glutSolidSphere(0.1,26,26);

glPopMatrix();

}

voidRenderScene()

{

glClear(GL_COLOR_BUFFER_BIT|GL_DEPTH_BUFFER_BIT);

RenderSphere();

glutSwapBuffers();

}

voidChangeSize(GLsizeiw,GLsizeih)

{

if(h==0)

h=1;

glViewport(0,0,w,h);

GLfloatfAspect=(GLfloat)w/(GLfloat)h;

glMatrixMode(GL_PROJECTION);

glLoadIdentity();

gluPerspective(35.0f,fAspect,1.0f,50.0f);

glMatrixMode(GL_MODELVIEW);

glLoadIdentity();

}

voidTimerFunc(intvalue)

{

yRot+=0.5;

if(yRot>360.0f)

{

yRot=0.0f;

}

glutPostRedisplay();

glutTimerFunc(50,TimerFunc,1);

}

//处理点击记录

voidProcessHit(inthits,GLuint*buf)

{

for(inti=1;i<=hits;++i)

{

GLuintnameNum=*buf;

printf("hitnumber%d\n",i);

printf("namestackcountis%d\n",*buf);buf++;

printf("minzvalueis%g\n",(float)*buf/0x7FFFFFFF);buf++;

printf("maxzvalueis%g\n",(float)*buf/0x7FFFFFFF);buf++;

printf("namevalueis:");

for(intj=0;j<nameNum;++j)

{

switch(*buf)

{

caseSUN:

printf("SUN\t");

break;

caseEARTH:

printf("EARTH\t");

break;

caseMOON:

printf("MOON\t");

break;

default:

break;

}

buf++;

}

printf("\n");

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