学步园

#include "stdafx.h"
#include "GL/glut.h"
#include "stdlib.h"
#include "stdio.h"
#include "math.h"
static int big = 0;
static bool isLeftEye = false;
#define PI 3.1415926
const GLfloat R = 8.0;
static GLfloat leftMatrix[16] = {1.0, 0.0, 0.0, 0.0,
0.0, 1.0, 0.0, 0.0,
0.0, 0.0, 1.0, 0.0,
0.0, 0.0, 0.0, 1.0};
static GLfloat rightMatrix[16] = {1.0, 0.0, 0.0, 0.0,
0.0, 1.0, 0.0, 0.0,
0.0, 0.0, 1.0, 0.0,
0.0, 0.0, 0.0, 1.0};
static GLfloat leftPersMatrix[16] = {1.0, 0.0, 0.0, 0.0,
0.0, 1.0, 0.0, 0.0,
0.0, 0.0, 1.0, 0.0,
0.0, 0.0, 0.0, 1.0};
static GLfloat rightPersMatrix[16] = {1.0, 0.0, 0.0, 0.0,
0.0, 1.0, 0.0, 0.0,
0.0, 0.0, 1.0, 0.0,
0.0, 0.0, 0.0, 1.0};
void init(void)
{
const GLfloat SD = 0.06;
GLfloat n = SD*R/2.0;
//要是转秩
//n=0;
leftMatrix[12] = n;
rightMatrix[12] = -n;
//这里假设眼到屏幕为一米，以米为单位
GLfloat p = SD/(2*1*tan(PI/6)*1);
//p = 0.0;
leftPersMatrix[12] = -p;
rightPersMatrix[12] = p;
GLfloat mat_specular[] = {0.8, 0.8, 0.0, 1.0};
GLfloat mat_shininess[] = {50.0};
GLfloat light_position[] = {1.0, 1.0, 1.0, 0.0};
GLfloat white_light[] = {1.0, 1.0, 1.0, 1.0};
GLfloat yellow_light[] = {1.0, 1.0, 0.0, 1.0};
GLfloat lmodel_ambient[] = {0.0, 0.7, 0.5, 1.0};
glClearColor(1.0, 1.0, 1.0, 0.0);
glShadeModel(GL_SMOOTH);
glMaterialfv(GL_FRONT, GL_SPECULAR, mat_specular);
glMaterialfv(GL_FRONT, GL_SHININESS, mat_shininess);
glLightfv(GL_LIGHT0, GL_POSITION, light_position);
glLightfv(GL_LIGHT0, GL_DIFFUSE, yellow_light);//主体的颜色
glLightfv(GL_LIGHT0, GL_SPECULAR, white_light);//高光的颜色
glLightModelfv(GL_LIGHT_MODEL_AMBIENT, lmodel_ambient);
glEnable(GL_LIGHTING);
glEnable(GL_LIGHT0);
glEnable(GL_DEPTH_TEST);
}
void display(void)
{
glColorMask(1.0, 1.0,1.0,1.0);
glClearColor(0.0,0.0,0.0,1.0);
glClearDepth(1.0);
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
glColor3f(1.0, 1.0, 1.0);
// 画左眼
glMatrixMode(GL_PROJECTION);
glPushMatrix();
float mat[16];
glGetFloatv(GL_PROJECTION_MATRIX,mat);
glLoadIdentity();
glMultMatrixf(leftPersMatrix);
glMultMatrixf(mat);
glMatrixMode(GL_MODELVIEW);
glPushMatrix();
glGetFloatv(GL_MODELVIEW_MATRIX,mat);
glLoadIdentity();
glMultMatrixf(leftMatrix);
glMultMatrixf(mat);
glColorMask(1.0, 0.0,0.0,1.0);
glRotatef((GLfloat) big, 0.0, 1.0, 0.0);
glutSolidTeapot(2.0);
glPopMatrix();
glMatrixMode(GL_PROJECTION);
glPopMatrix();
glFlush();
//画右眼
glClearDepth(1.0);
glClear(GL_DEPTH_BUFFER_BIT);
glMatrixMode(GL_PROJECTION);
glPushMatrix();
glGetFloatv(GL_PROJECTION_MATRIX,mat);
glLoadIdentity();
glMultMatrixf(rightPersMatrix);
glMultMatrixf(mat);
glMatrixMode(GL_MODELVIEW);
glPushMatrix();
glGetFloatv(GL_MODELVIEW_MATRIX,mat);
glLoadIdentity();
glMultMatrixf(rightMatrix);
glMultMatrixf(mat);
glColorMask(0.0, 1.0,1.0,1.0);
glRotatef((GLfloat) big, 0.0, 1.0, 0.0);
glutSolidTeapot(2.0);
glPopMatrix();
glMatrixMode(GL_PROJECTION);
glPopMatrix();
glFlush();
//glPopMatrix();
//if(isLeftEye)
//{
// glMatrixMode(GL_PROJECTION);
// glMultMatrixf(leftPersMatrix);
// glMatrixMode(GL_MODELVIEW);
// glMultMatrixf(leftMatrix);
// glColorMask(1.0, 0.0,0.0,1.0);
//
//
//
// isLeftEye = false;
//}else
//{
//
// glMatrixMode(GL_PROJECTION);
// glMultMatrixf(rightPersMatrix);
// glMatrixMode(GL_MODELVIEW);
// glMultMatrixf(rightMatrix);
// glColorMask(0.0, 1.0,1.0,1.0);
// isLeftEye = true;
//}
//glRotatef((GLfloat) big, 0.0, 1.0, 0.0);
//glutSolidTeapot(1.0);
//glRotatef((GLfloat) big, 0.0, 1.0, 0.0);
//glTranslatef(3.0, 0.0, 0.0);
//glutSolidTeapot(0.5);
glutSwapBuffers();
}
void reshape(int w, int h)
{
glViewport(0, 0, (GLsizei) w, (GLsizei) h);
glMatrixMode(GL_PROJECTION);
glLoadIdentity();
gluPerspective(60, (GLfloat)w/(GLfloat)h, 0.01, 20.0);
glMatrixMode(GL_MODELVIEW);
glLoadIdentity();
gluLookAt(0.0, 0.0, R, 0.0, 0.0, 0.0, 0.0, 1.0, 0.0 );
}
void keyboard(unsigned char key, int x, int y)
{
switch (key)
{
case 'b':
big = (big + 1) % 360;
glutPostRedisplay();
break;
case 'B':
big = (big - 1) % 360;
glutPostRedisplay();
break;
case 27: // 按ESC键时退出程序
exit (0);
break;
default:
break;
}
}
void spinDisplay(void)
{
big = (big + 1) % 360;
glutPostRedisplay();
}
int main (int argc, char** argv)
{
glutInit(&argc, argv);
glutInitDisplayMode(GLUT_DOUBLE | GLUT_RGB | GLUT_DEPTH);
glutInitWindowSize(500, 500);
glutInitWindowPosition(100, 100);
glutCreateWindow(argv[0]);
init();
glutDisplayFunc(display);
glutReshapeFunc(reshape);
glutKeyboardFunc(keyboard);
glutIdleFunc(spinDisplay);
glutMainLoop();
return 0;
}