【C++/C开发|使用opengl实现一个简易的robot模拟】作者：chenjieb520
这是我一个很早以前写得关于3Drobot仿真模拟的一个简易实现方式。希望对于学习OPENGL的同学有帮助。
效果图如下：




代码如下：
#include
#include
#include
#include
#include
/*
作者：chenjieb520
*1、显示场景，并在指定视线方向观察显示场景，并在指定视线方向观察显示场景，并在指定视线方向观察
能够借助键盘或鼠，能够借助键盘或鼠，能够借助键盘或鼠
标交互动态观察场景。标交互动态观察场景。标交互动态观察场景。

*2、渲染的实现，至少实现两种局部光渲染的实现和一种全局光照模型
*/
/*
*机器人运动时 动作转化
*/
static int shoulder1 = 0;
static int shoulder2 = 0;
static int hand=0;
static int turn1=0;
static int tag=0;


static int turn=0 ; //转弯
static float forward=0; //前进
static float elbow = 0 ,z=0;
int w;
int h;
int font=(int)GLUT_BITMAP_8_BY_13;
char s[30];
int frame,timeOwn,timebase=0;


static GLfloat xRot = 0.0f;
static GLfloat yRot = 0.0f;
//是否停止转动
boolIsStop=false;
//光照使用光源
GLfloat lightPos[] = { 1.0f, 0.0f, -1.0f, 0.0f };
GLfloatspecular[] = { 1.0f, 1.0f, 1.0f, -1.0f}; //反射光
GLfloatspecref[] ={ 1.0f, 1.0f, 1.0f, 1.0f }; //a
GLfloatambientLight[] = { 0.5f, 0.5f, 0.5f, 1.0f}; //环绕光
GLfloatspotDir[] = { 0.0f, 0.0f, -1.0f };
GLboolean bEdgeFlag = TRUE;




void showText(void);
void resetPerspectiveProjection() ;
void setOrthographicProjection() ;
void Something();
void renderBitmapString(float x, float y, void *font,char *string);
//设置背景
void SetupRC(void)
{
glEnable(GL_CULL_FACE);
glEnable(GL_LIGHTING);
glLightModelfv(GL_LIGHT_MODEL_AMBIENT, ambientLight);
glLightfv(GL_LIGHT0,GL_DIFFUSE,ambientLight);
glLightfv(GL_LIGHT0,GL_SPECULAR,specular);
glLightfv(GL_LIGHT0,GL_POSITION,lightPos);


glLightf(GL_LIGHT0,GL_SPOT_CUTOFF,30.0f);
glLightf(GL_LIGHT0,GL_SPOT_EXPONENT,20.0f);
glEnable(GL_LIGHT0);
glEnable(GL_COLOR_MATERIAL);
glColorMaterial(GL_FRONT, GL_AMBIENT_AND_DIFFUSE);


glMaterialfv(GL_FRONT, GL_SPECULAR,specref);
glMateriali(GL_FRONT, GL_SHININESS,8);
glClearColor(0.0f, 0.0f, 0.0f, 1.0f );
}

void display(void)
{
glClear (GL_COLOR_BUFFER_BIT);
glShadeModel(GL_SMOOTH);
if (IsStop==false)
{
turn = (turn - 5) % 360;
if (forward<2)
{
turn1=turn;
forward = forward -0.04*sin((GLfloat)turn1/360*3.14*2);
z=z-0.05*cos((GLfloat)turn1/360*3.14*2);

if(tag==0){
shoulder1 = (shoulder1 + 1);
shoulder2 = (shoulder2 - 1);
if(shoulder1>=0){elbow=elbow-1.2; }
else{elbow=elbow+1.2; }
}
else
{
shoulder1 = (shoulder1 - 1);
shoulder2 = (shoulder2 + 1);
if(shoulder1>=0){elbow=elbow+1.25; }
else{elbow=elbow-1.2; }
}
if(shoulder1>30){
tag=1;
}
if(shoulder1<-30){
tag=0;
}
}else
{
turn1=turn;
forward = forward +0.04*sin((GLfloat)turn1/360*3.14*2);
z=z+0.05*cos((GLfloat)turn1/360*3.14*2);
if(tag==0){
shoulder1 = (shoulder1 - 1);
shoulder2 = (shoulder2 + 1);
}
else
{
shoulder1 = (shoulder1 + 1);
shoulder2 = (shoulder2 - 1);
}
if(shoulder1>30)
{
tag=0;
}
if(shoulder1<-30)
{
tag=1;
}
}
}
//
glBegin(GL_QUADS);
glColor3ub(0,32,0);
glVertex3f(8.0f, -3.0f, -4.0f);
glVertex3f(-8.0f, -3.0f, -4.0f);
glColor3ub(0,255,0);
glVertex3f(-8.0f, -3.0f, 4.0f);
glVertex3f(8.0f, -3.0f, 4.0f);
glEnd();


//机器人运动
glPushMatrix();
glTranslatef (forward,0.0,z); //前进
glRotatef ((GLfloat) turn, 0.0, 1.0, 0.0);
Something();


glTranslatef (0.375,0.0, 0.0); //提起右大腿
glRotatef ((GLfloat) shoulder2, 1.0, 0.0, 0.0);


glPushMatrix();
glRotatef(yRot, 0.0f, 1.0f, 0.0f);
glRotatef(xRot, 1.0f, 0.0f, 0.0f);
glLightfv(GL_LIGHT0,GL_POSITION,lightPos);
glLightfv(GL_LIGHT0,GL_SPOT_DIRECTION,spotDir);
//画一个光源
glColor3ub(255,0,0);
glTranslatef(lightPos[0],lightPos[1],lightPos[2]);


glutSolidCone(0.3f,0.3f,10,10);
glPushAttrib(GL_LIGHTING_BIT);
glDisable(GL_LIGHTING);
glColor3ub(255,255,0);
glutSolidSphere(0.1f,10.0f,10);
glPopAttrib();
glPopMatrix();


glTranslatef (0.0, -0.5, 0.0);
glColor3f(0.8,1.0,0.2);
glPushMatrix();
glScalef (0.5, 1.0, 0.5);
glutSolidCube(1.0);
glPopMatrix();

glTranslatef (0.0, -0.5, 0.0); //提起右小腿
glRotatef ((GLfloat) elbow, 1.0, 0.0, 0.0);
glTranslatef (0.0, -0.5, 0.0);

glColor3f(0.5,0.1,0.8);
glPushMatrix();
glScalef (0.5, 1.0, 0.5);
glutSolidCube(1.0);
glPopMatrix();

glTranslatef (0.0, -0.5, -0.1); //右脚
glColor3f(0.5,0.2,1.0);
glPushMatrix();
glScalef (0.5, 0.1, 0.7);
glutSolidCube(1.0);
glPopMatrix();
glPopMatrix ();

glPushMatrix();
glTranslatef (forward,0.0,z);
glRotatef ((GLfloat) turn, 0.0, 1.0, 0.0);

glTranslatef (-0.375, 0.0, 0.0); //左大腿
glRotatef ((GLfloat) shoulder1, 1.0, 0.0, 0.0);
glTranslatef (0.0, -0.5, 0.0);

glColor3f(0.8,1.0,0.2);
glPushMatrix();
glScalef (0.5, 1.0, 0.5);
glutSolidCube(1.0);
glPopMatrix();


glTranslatef (0.0, -0.5, 0.0); //左小腿
glRotatef ((GLfloat) elbow, 1.0, 0.0, 0.0);
glTranslatef (0.0, -0.5, 0.0);

glColor3f(0.5,0.1,0.8);
glPushMatrix();
glScalef (0.5, 1.0, 0.5); //缩放四方体
glutSolidCube(1.0); //画四方体
glPopMatrix();
glTranslatef (0.0, -0.5, -0.1); //左脚
glColor3f(0.5,0.2,1.0);
glPushMatrix();
glScalef (0.5, 0.1, 0.7);
glutSolidCube(1.0);
glPopMatrix();

glPopMatrix();

glPushMatrix();
glTranslatef (forward,0.0,z);
glRotatef ((GLfloat) turn, 0.0, 1.0, 0.0);

glTranslatef (0.0, 1.0,0.0); //躯干

glColor3f(0.5,0.5,1.0);
glPushMatrix();
glScalef (1.4, 2.0, 0.5);
glutSolidCube(1.0);
glPopMatrix();


glTranslatef (0.0, 1.25, 0.0); //头
glColor3f(1.0,0.3,0.2);
glPushMatrix();
glScalef (0.5, 0.5, 0.5);
glutSolidCube(1.0);
glPopMatrix();

glPopMatrix();

glPushMatrix();
glTranslatef (forward,0.0,z);
glRotatef ((GLfloat) turn, 0.0, 1.0, 0.0);


glTranslatef (0.85, 1.75, 0.0); //右臂
glRotatef ((GLfloat) shoulder1, 1.0, 0.0, 0.0);
glTranslatef (0.0, -0.5, 0.0);

glColor3f(1.0,0.0,1.0);
glPushMatrix();
glScalef (0.3, 1.3, 0.4);
glutSolidCube(1.0);
glPopMatrix();

glPopMatrix();
glPushMatrix();
glTranslatef (forward,0.0,z);
glRotatef ((GLfloat) turn, 0.0, 1.0, 0.0);

glTranslatef (-0.85, 1.75, 0.0); //左臂
glRotatef ((GLfloat) shoulder2, 1.0, 0.0, 0.0);
glTranslatef (0.0, -0.5, 0.0);

glColor3f(1.0,0.0,1.0);
glPushMatrix();
glScalef (0.3, 1.3, 0.4);
glutSolidCube(1.0);
glPopMatrix();


glPopMatrix();


glutSwapBuffers();
}
//随便画一些小东西
voidSomething()
{
glPushMatrix();
glRotatef(xRot, 1.0f, 0.0f, 0.0f);
glRotatef(yRot, 0.0f, 1.0f, 0.0f);
glTranslatef(0,-3.5f,0);
glutWireSphere(2.0f,50,50);
glutWireTorus(0.3f, 1.0f,50,50);
glutWireCone(0.30f, 1.1f, 20, 20);
glPopMatrix();
}
void renderBitmapString(float x, float y, void *font,char *string)
{
char *c;
glRasterPos2f(x, y);
for (c=string; *c != '\0'; c++) {
glutBitmapCharacter(font, *c);
}
}

void reshape (int w1, int h1)
{
w=w1;
h=h1;
glViewport (0, 0, (GLsizei) w1, (GLsizei) h1);
glMatrixMode (GL_PROJECTION);
glLoadIdentity ();
gluPerspective(65.0, (GLfloat) w1/(GLfloat) h1, 1.0, 20.0);
glMatrixMode(GL_MODELVIEW);
glLoadIdentity();
glTranslatef (0.0, 0.0, -8.0);
}

void keyboard (unsigned char key, int x, int y)
{
switch (key) {
case 'w': //向后走
turn1=turn;
forward = forward -0.04*sin((GLfloat)turn1/360*3.14*2);
z=z-0.05*cos((GLfloat)turn1/360*3.14*2);

if(tag==0){
shoulder1 = (shoulder1 + 1);
shoulder2 = (shoulder2 - 1);
if(shoulder1>=0){elbow=elbow-1.2; }
else{elbow=elbow+1.2; }
}
else
{
shoulder1 = (shoulder1 - 1);
shoulder2 = (shoulder2 + 1);
if(shoulder1>=0){elbow=elbow+1.25; }
else{elbow=elbow-1.2; }
}
if(shoulder1>30){
tag=1;
}
if(shoulder1<-30){
tag=0;
}
IsStop=true;
glutPostRedisplay();
break;
case 's': //向前走
turn1=turn;
forward = forward +0.04*sin((GLfloat)turn1/360*3.14*2);
z=z+0.05*cos((GLfloat)turn1/360*3.14*2);
if(tag==0){
shoulder1 = (shoulder1 - 1);
shoulder2 = (shoulder2 + 1);
}
else
{
shoulder1 = (shoulder1 + 1);
shoulder2 = (shoulder2 - 1);
}
if(shoulder1>30){
tag=0;
}
if(shoulder1<-30){
tag=1;
}
IsStop=true;
glutPostRedisplay();
break;
case 'd'://右转
turn = (turn - 5) % 360;
glutPostRedisplay();
IsStop=true;
break;
case 'a'://左转
turn = (turn + 5) % 360;
glutPostRedisplay();
IsStop=true;
break;
case 'l':
shoulder1 = (shoulder1 + 2) % 360;
shoulder2 = (shoulder2 - 4) % 360;
glutPostRedisplay();
IsStop=true;
break;
case 'L':
shoulder1 = (shoulder1 - 5) % 360;
shoulder2 = (shoulder2 + 10) % 360;
glutPostRedisplay();
IsStop=true;
break;
case 'P':
IsStop=false;
break;
case 'p':
IsStop=false;
break;
case 27:
exit(0);
break;
default:
break;
}
}
//设置视觉角度
void setOrthographicProjection()
{
glMatrixMode(GL_PROJECTION);
glPushMatrix();
glLoadIdentity();
gluOrtho2D(0, w, 0, h);
glScalef(1, -1, 1);
glTranslatef(0, -h, 0);
glMatrixMode(GL_MODELVIEW);
}
void resetPerspectiveProjection()
{
glMatrixMode(GL_PROJECTION);
glPopMatrix();
glMatrixMode(GL_MODELVIEW);
}
//光源的坐标变化
void SpecialKeys(int key, int x, int y)
{
if(key == GLUT_KEY_UP)
xRot-= 5.0f;
if(key == GLUT_KEY_DOWN)
xRot += 5.0f;
if(key == GLUT_KEY_LEFT)
yRot -= 5.0f;
if(key == GLUT_KEY_RIGHT)
yRot += 5.0f;
if(key > 356.0f)
xRot = 0.0f;
if(key < -1.0f)
xRot = 355.0f;
if(key > 356.0f)
yRot = 0.0f;
if(key < -1.0f)
yRot = 355.0f;
glutPostRedisplay();
}
//鼠标事件
void Mouse(int button,int state, int x, int y)
{
if (state == GLUT_DOWN)//鼠标按下
{
if (x<0)
{
//向左旋转
yRot -= 5.0f;
}else if (x>=0)
{
//向右旋转
yRot += 5.0f;
}else if (y>=0)
{
//向上旋转
xRot-= 5.0f;
}else if (y<0)
{
//向下旋转
xRot += 5.0f;
}
if(xRot> 356.0f)
xRot = 0.0f;
if(xRot < -1.0f)
xRot = 355.0f;
if(yRot > 356.0f)
yRot = 0.0f;
if(yRot < -1.0f)
yRot = 355.0f;
glutPostRedisplay();
}
}
//时间函数,定时刷新
void TimerFunction(int value)
{
display();
glutPostRedisplay();
glutTimerFunc(33,TimerFunction, 1);
}
//主函数
int main(int argc, char** argv)
{
glutInit(&argc, argv);
glutInitDisplayMode (GLUT_DOUBLE | GLUT_RGB);
glutInitWindowSize (800, 600);
glutInitWindowPosition (100, 100);
glutCreateWindow("机器人 按W向前走按s向后走按a向左转按d向右转按p可以自行转动");
SetupRC();
glutDisplayFunc(display);
glutReshapeFunc(reshape);
glutKeyboardFunc(keyboard);
glutSpecialFunc(SpecialKeys);
glutMouseFunc(Mouse);
glutTimerFunc(33, TimerFunction, 1);
// glutIdleFunc(display);

glutMainLoop();
return 0;
}

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