OpenGL实现的运动的小汽车

#include<math.h> #include<stdio.h> #include <gl/glut.h> #include "math.h" #pragma comment (linker, "/ENTRY:mainCRTStartup") #pragma comment (linker, "/subsystem:windows") const int N = 20;//绘制圆的循环次数，越大越接近圆 const GLfloat Pi = 3.1415926536f;//圆周率 #define WITH 800 #define HEIGHT 600 const GLfloat factor = 0.1f; void displyTreen(float w1,float w2); void DrawTangle(float x,float y,float r) { glBegin(GL_POLYGON); float i; for(i=0; i<N; ++i) glVertex2f(r*cos(2*Pi/N*i), r*sin(2*Pi/N*i)); glEnd(); } void DisplayBackrond()//绘制背景 { glColor3f(0.0f,0.0f,0.0f); glClear(GL_COLOR_BUFFER_BIT);//清空背景 glColor3f(0.0f,1.0f,0.0f);//绿色 //上半部分草坪 glBegin(GL_QUADS); glVertex2f(-1.0f,1.0f); glVertex2f(-1.0f,0.4f); glVertex2f(1.0f,0.4f); glVertex2f(1.0f,1.0f); glEnd(); //下半部分草坪 glBegin(GL_QUADS); glVertex2f(-1.0f,-1.0f); glVertex2f(-1.0f,-0.4f); glVertex2f(1.0f,-0.4f); glVertex2f(1.0f,-1.0f); glEnd(); //马路上的黄线 glColor3f(1.0f,1.0f,0.0f);//黄色 glBegin(GL_QUADS); glVertex2f(-1.0f,-0.01f); glVertex2f(-1.0f,0.01f); glVertex2f(1.0f,0.01f); glVertex2f(1.0f,-0.01f); glEnd(); //绘制电线 glColor3f(0.0f,0.0f,0.0f);//黑色 glBegin(GL_LINES); glVertex2f(-1.0f,0.7f); glVertex2f(1.0f,0.7f); glEnd(); glBegin(GL_LINES); glVertex2f(-1.0f,0.75f); glVertex2f(1.0f,0.75f); glEnd(); displyTreen(-400,400);//绘制电线杆 DrawTangle(0,0,5) glFlush(); } void displyTreen(float w1,float w2)//绘制移动的电线杆，w是电线杆的位置 { //第一个电线杆 float n; float m; n=w1/WITH; glLineWidth(3); glColor3f(0.7f,0.7f,0.2f); glBegin(GL_LINES);//宽度为2 glVertex2f(n,0.4f); glVertex2f(n,0.725f); glEnd(); glBegin(GL_LINES);//宽度为2 glVertex2f(n-0.015,0.7f); glVertex2f(n+0.015,0.75f); glEnd(); //第二个电线杆 m=w2/WITH; glLineWidth(3); glColor3f(0.7f,0.7f,0.2f); glBegin(GL_LINES);//宽度为2 glVertex2f(m,0.4f); glVertex2f(m,0.725f); glEnd(); glBegin(GL_LINES);//宽度为2 glVertex2f(m-0.015,0.7f); glVertex2f(m+0.015,0.75f); glEnd(); } void myDisplay() { GLfloat x; glClear(GL_COLOR_BUFFER_BIT); glColor3f(0.4f,0.7f,0.8f); //glLineWidth(10.0f); //glRectf(-1.0f,1.0f,0.0f,0.0f); glBegin(GL_LINES); glVertex2f(0.0f,1.0f); glVertex2f(0.0f,-1.0f); glVertex2f(1.0f,0.0f); glVertex2f(-1.0f,0.0f); glEnd(); glBegin(GL_LINE_STRIP); for(x=-1.0f/factor; x<1.0f/factor; x+=0.01f) { glVertex2f(x*factor, sin(x)*factor); } glEnd(); glBegin(GL_LINE_STRIP); for(x=-1.0f/factor; x<1.0f/factor; x+=0.01f) { glVertex2f(x*factor, cos(x)*factor); } glEnd(); glBegin(GL_LINE_STRIP); for(x=-1.0f/factor; x<1.0f/factor; x+=0.01f) { glVertex2f(x*factor,tan(x)*factor); } glEnd(); glFlush(); } int main(int argc, char *argv[]) { glutInit(&argc, argv); glutInitDisplayMode(GLUT_RGB | GLUT_SINGLE); //RGB绘制，双缓冲 glutInitWindowPosition(200,200); glutInitWindowSize(WITH,HEIGHT); glutCreateWindow("运动的汽车"); glutDisplayFunc(&DisplayBackrond); glutMainLoop(); return 0; }