OpenGL学习入门之3D光照机器人

// myopengl.cpp : 定义控制台应用程序的入口点。
//
#include "stdafx.h"
#include "StdAfx.h"
#include<windows.h>
#include<gl/glut.h>
#include <iostream>
using namespace std;
GLfloat no_mat[] = { 0.0, 0.0, 0.0, 1.0 };
GLfloat mat_ambient[] = { 0.7, 0.7, 0.7, 1.0 };
GLfloat mat_ambient_color[] = { 0.8, 0.8, 0.2, 1.0 };
GLfloat mat_diffuse[] = { 0.1, 0.2, 0.8, 1.0 };
GLfloat mat_specular[] = { 1.0, 1.0, 1.0, 1.0 };
GLfloat no_shininess[] = { 0.5 };
GLfloat low_shininess[] = { 5.0 };
GLfloat high_shininess[] = { 100.0 };
GLfloat mat_emission[] = {0.3, 0.2, 0.2, 0.0};
static int angle=0,neck=0,lshoulder=0,lelbow=0,rshoulder=0,relbow=0,
lhips=0 ,rhips=0,lfoot=0,rfoot=0,flagneck=0,flaglshoulder=0,
flaglelbow=0,flagrshoulder=0,flagrelbow=0,flaglhips=0 ,
flagrhips=0,flaglfoot=0,flagrfoot=0;
void init(void){
GLfloat ambient[] = { 0.0, 0.0, 0.0, 1.0 };
GLfloat diffuse[] = { 1.0, 1.0, 1.0, 1.0 };
GLfloat position[] = { 0.0, 5.0, 10.0, 0.0 };
GLfloat lmodel_ambient[] = { 0.4, 0.4, 0.4, 1.0 };
GLfloat local_view[] = { 0.0 };
glClearColor(0,0,0,0);
glLightfv(GL_LIGHT0, GL_AMBIENT, ambient);
glLightfv(GL_LIGHT0, GL_DIFFUSE, diffuse);
glLightfv(GL_LIGHT0, GL_POSITION, position);
glLightModelfv(GL_LIGHT_MODEL_AMBIENT, lmodel_ambient);
glLightModelfv(GL_LIGHT_MODEL_LOCAL_VIEWER, local_view);
glShadeModel(GL_SMOOTH);
glEnable(GL_DEPTH_TEST);
glEnable(GL_LIGHTING);
glEnable(GL_LIGHT0);
}
void draw_belly(void){
glPushMatrix();
glTranslatef(0,1.5,0);
glScalef(0.5,1,0.4);
glMaterialfv(GL_FRONT, GL_AMBIENT, mat_ambient_color);
glMaterialfv(GL_FRONT, GL_DIFFUSE, mat_diffuse);
glMaterialfv(GL_FRONT, GL_SPECULAR, mat_specular);
glMaterialfv(GL_FRONT, GL_SHININESS, high_shininess);
glMaterialfv(GL_FRONT, GL_EMISSION, no_mat);
glutSolidCube(4);         ;
glPopMatrix();
}
void draw_leftshoulder(void){
glPushMatrix();
glMaterialfv(GL_FRONT, GL_AMBIENT, no_mat);
glMaterialfv(GL_FRONT, GL_DIFFUSE, mat_diffuse);
glMaterialfv(GL_FRONT, GL_SPECULAR, no_mat);
glMaterialfv(GL_FRONT, GL_SHININESS, no_shininess);
glMaterialfv(GL_FRONT, GL_EMISSION, no_mat);
glTranslatef(1.5,3,0);
glRotatef(lshoulder,1,0,0);
glTranslatef(0,-0.5,0);
glScalef(0.4,1,0.5);
glutSolidCube(2);
glScalef(1/0.4,1/1,1/0.5);
glTranslatef(0,-1.4,0);
glRotatef(lelbow,1,0,0);
glutWireSphere(0.4,200,500);
glScalef(0.4,1,0.5);
glTranslatef(0,-1.4,0);
glutSolidCube(2);
glPopMatrix();
}
void draw_rightshoulder(void){
glPushMatrix();
glMaterialfv(GL_FRONT, GL_AMBIENT, no_mat);
glMaterialfv(GL_FRONT, GL_DIFFUSE, mat_diffuse);
glMaterialfv(GL_FRONT, GL_SPECULAR, no_mat);
glMaterialfv(GL_FRONT, GL_SHININESS, no_shininess);
glMaterialfv(GL_FRONT, GL_EMISSION, no_mat);
glTranslatef(-1.5,3,0);
glRotatef(rshoulder,1,0,0);
glTranslatef(0,-0.5,0);
glScalef(0.4,1,0.5);
glutSolidCube(2);
glScalef(1/0.4,1/1,1/0.5);
glTranslatef(0,-1.4,0);
glRotatef(relbow,1,0,0);
glutWireSphere(0.4,200,500);
glScalef(0.4,1,0.5);
glTranslatef(0,-1.4,0);
glutSolidCube(2);
glPopMatrix();
}
void draw_head(void)
{
glPushMatrix();
glMaterialfv(GL_FRONT, GL_AMBIENT, no_mat);
glMaterialfv(GL_FRONT, GL_DIFFUSE, mat_diffuse);
glMaterialfv(GL_FRONT, GL_SPECULAR, mat_specular);
glMaterialfv(GL_FRONT, GL_SHININESS, low_shininess);
glMaterialfv(GL_FRONT, GL_EMISSION, no_mat);
glTranslatef(0,3.5,0);
glRotatef(neck,0,0,1);
glTranslatef(0,1,0);
glutWireSphere(1,200,500);
glPopMatrix();
}
void draw_leftfoot(void){
glPushMatrix();
glMaterialfv(GL_FRONT, GL_AMBIENT, no_mat);
glMaterialfv(GL_FRONT, GL_DIFFUSE, mat_diffuse);
glMaterialfv(GL_FRONT, GL_SPECULAR, no_mat);
glMaterialfv(GL_FRONT, GL_SHININESS, no_shininess);
glMaterialfv(GL_FRONT, GL_EMISSION, no_mat);
glTranslatef(-0.6,-0.6,0);
glRotatef(lfoot,1,0,0);
glTranslatef(0,-1,0);
glScalef(0.4,1,0.5);
glutSolidCube(2);
glScalef(1/0.4,1/1,1/0.5);
glTranslatef(0,-1.4,0);
glRotatef(lhips,1,0,0);
glutWireSphere(0.4,200,500);
glScalef(0.4,1,0.5);
glTranslatef(0,-1.4,0);
glutSolidCube(2);
glPopMatrix();
}
void draw_rightfoot(void){
glPushMatrix();
glMaterialfv(GL_FRONT, GL_AMBIENT, no_mat);
glMaterialfv(GL_FRONT, GL_DIFFUSE, mat_diffuse);
glMaterialfv(GL_FRONT, GL_SPECULAR, no_mat);
glMaterialfv(GL_FRONT, GL_SHININESS, no_shininess);
glMaterialfv(GL_FRONT, GL_EMISSION, no_mat);
glTranslatef(0.6,-0.6,0);
glRotatef(rfoot,1,0,0);
glTranslatef(0,-1,0);
glScalef(0.4,1,0.5);
glutSolidCube(2);
glScalef(1/0.4,1/1,1/0.5);
glTranslatef(0,-1.4,0);
glRotatef(rhips,1,0,0);
glutWireSphere(0.4,200,500);
glScalef(0.4,1,0.5);
glTranslatef(0,-1.4,0);
glutSolidCube(2);
glPopMatrix();
}
void display(void){
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
glPushMatrix();
glRotatef(angle,0,1,0);
glTranslatef(0,4,0);
draw_belly();
draw_head();
draw_leftshoulder();
draw_rightshoulder();
draw_leftfoot();
draw_rightfoot();
glPopMatrix();
glutSwapBuffers();
}
void reshape(int w,int h){
glViewport(0,0,w,h);
glMatrixMode(GL_PROJECTION);
glLoadIdentity();
glOrtho(-8,8,-8,8,-10,10);
glMatrixMode(GL_MODELVIEW);
glLoadIdentity();
gluLookAt (0.0, 4.0, 10, 0.0, 4, 0.0, 0.0, 1.0, 0.0);
}
void keyboard(unsigned char key,int x,int y){
switch(key){
case '1':
angle=(angle+5)%360;
glutPostRedisplay();
break;
case '2':
angle=(angle-5)%360;
glutPostRedisplay();
break;
case '3':
if(flagneck){
neck=neck+5;
if(neck>=30)flagneck=0;
}
else{
neck=neck-5;
if(neck<=-30)flagneck=1;
}
glutPostRedisplay();
break;
case '4':
if(flaglshoulder){
lshoulder+=5;
if(lshoulder>=60)flaglshoulder=0;
}
else{
lshoulder-=5;
if(lshoulder<=-60)flaglshoulder=1;
}
glutPostRedisplay();
break;
case '5':
if(flagrshoulder){
rshoulder+=5;
if(rshoulder>=60)flagrshoulder=0;
}
else{
rshoulder-=5;
if(rshoulder<=-60)flagrshoulder=1;
}
glutPostRedisplay();
break;
case '6':
if(flaglelbow){
lelbow+=5;
if(lelbow>=60)flaglelbow=0;
}
else{
lelbow-=5;
if(lelbow<=-60)flaglelbow=1;
}
glutPostRedisplay();
break;
case '7':
if(flagrelbow){
relbow+=5;
if(relbow>=60)flagrelbow=0;
}
else{
relbow-=5;
if(relbow<=-60)flagrelbow=1;
}
glutPostRedisplay();
break;
case '8':
if(flaglhips){
lhips+=5;
if(lhips>=60)flaglhips=0;
}
else{
lhips-=5;
if(lhips<=-60)flaglhips=1;
}
glutPostRedisplay();
break;
case '9':
if(flagrhips){
rhips+=5;
if(rhips>=60)flagrhips=0;
}
else{
rhips-=5;
if(rhips<=-60)flagrhips=1;
}
glutPostRedisplay();
break;
case 'a':
if(flaglfoot){
lfoot+=5;
if(lfoot>=60)flaglfoot=0;
}
else{
lfoot-=5;
if(lfoot<=-60)flaglfoot=1;
}
glutPostRedisplay();
break;
case 'b':
if(flagrfoot){
rfoot+=5;
if(rfoot>=60)flagrfoot=0;
}
else{
rfoot-=5;
if(rfoot<=-60)flagrfoot=1;
}
glutPostRedisplay();
break;
default:
break;
}
}
int main(int argc,char** argv){
printf("按键‘1’,‘2’为整体旋转\n");
printf("按键‘3’为头部旋转\n");
printf("按键‘4’,‘5’,‘6’，‘7’为手臂旋转\n");
printf("按键‘8’，‘9’，‘a’，‘b’为腿部旋转\n");
glutInit(&argc,argv);
glutInitDisplayMode(GLUT_DOUBLE|GLUT_RED);
glutInitWindowSize(600,600);
glutInitWindowPosition(100,100);
glutCreateWindow(argv[0]);
init();
glutDisplayFunc(display);
glutReshapeFunc(reshape);
glutKeyboardFunc(keyboard);
glutMainLoop();
return 0;
}

文献来源：

UNDONER(小杰博客) ：http://blog.csdn.net/undoner

LSOFT.CN(琅软中国) ：http://www.lsoft.cn

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