c++ 旋转的圆柱

【实例简介】

【调试说明】

如果出现 fatal error C1083: 无法打开包括文件:“gl/glut.h”: No such file or directory；

或者 fatal error C1083: 无法打开包括文件:“gl/glaux.h”: No such file or directory；

这个时候就要进行相应的如下操作：

1、下载GLUT工具包： glut_37beta.rar
2、将下载的压缩包解到 debug目录，再运行 就可以了

【实例截图】

【核心代码】

#include<stdlib.h>
#include<windows.h>
#include<math.h>
#include<GL/glut.h>

#include <math.h>

#include "Header.h"

void Circle()
{

    glClearColor(0.0,0.0,0.0,0.0);
    //glClear(GL_COLOR_BUFFER_BIT);//有l这个会把圆柱侧面清掉
    glEnable(GL_TEXTURE_2D);//执行纹理映射，启用二维文理
    glBindTexture(GL_TEXTURE_2D, ID1);
    glBegin(GL_TRIANGLE_FAN);
    glTexCoord2f(0.0f, 0.0f);
    glVertex3f(0.0f, 0.0f, 0.0f);
    int i = 0;
    for (i = 0; i <= 360; i  = 15)
    {
        float p = i * 3.14 / 180;
        glTexCoord2f(1.0f, 0.0f);
        glVertex3f(sin(p), cos(p), 0.0f);
    }
    glEnd();
    glDisable(GL_TEXTURE_2D);
}
void Cylinder()
{
    glClearColor(0.0,0.0,0.0,0.0);
    //glClear(GL_COLOR_BUFFER_BIT);//有l这个会把圆柱侧面清掉
    glEnable(GL_TEXTURE_2D);//执行纹理映射，启用二维文理
    glBindTexture(GL_TEXTURE_2D, ID);
    glBegin(GL_QUAD_STRIP);//连续填充四边形串
    int i = 0;
    for (i = 0; i <= 360; i  = 15)
    {
        float p = i * 3.14 / 180;
        glTexCoord2f(p/10,0.1f);
        glVertex3f(sin(p), cos(p), 3.0f);
        glTexCoord2f(p/10,0.0f);
        glVertex3f(sin(p), cos(p), 0.0f);
    }
    glEnd();
    glDisable(GL_TEXTURE_2D);
    Circle();
    glTranslatef(0, 0, 3);
    Circle();
}
void renderScene(void)
{

    static float i = 0;
    i  = 0.1;//旋转速度
    if (i > 360)
        i = 0;
    glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
    glLoadIdentity();



    glPushMatrix();
    //glColor3f(0, 1, 1);//设置颜色
    glTranslatef(0.0, 0.0, -7);//指定位置，大小
    glRotatef(i, 1, 1 ,1);//旋转轴

//定义光源
    GLfloat ambient[]= {0.0,0.0,0.0,1.0};
    GLfloat diffuse[]= {9.0,9.0,9.0,9.0};
    GLfloat position[]= {i/6,2.0,2.0,0.0};

//把定义值给GL_LIGHT1
    glLightfv(GL_LIGHT1,GL_AMBIENT,ambient);//设置环境光
    glLightfv(GL_LIGHT1,GL_DIFFUSE,diffuse);//设置漫反射光
    glLightfv(GL_LIGHT1,GL_POSITION,position);//设置光源位置

    glEnable(GL_LIGHTING);//启用光照
    glEnable(GL_LIGHT1);//启用1号光源

    Cylinder();//绘制圆柱
    //Circle();

    glDisable(GL_TEXTURE_2D);



    glPopMatrix();


    glutSwapBuffers();

}
void changeSize(int w, int h)
{

    // 防止除数即高度为0
    // (你可以设置窗口宽度为0).
    if (h == 0)
        h = 1;
    float ratio = 1.0* w / h;

    // 单位化投影矩阵。
    glMatrixMode(GL_PROJECTION);
    glLoadIdentity();

    // 设置视口大小为整个窗口大小
    glViewport(0, 0, w, h);

    // 设置正确的投影矩阵
    gluPerspective(45, ratio, 1, 1000);
    //下面是设置模型视图矩阵
    glMatrixMode(GL_MODELVIEW);
    glLoadIdentity();
    gluLookAt(0.0, 0.0, 5.0, 0.0, 0.0, -1.0, 0.0f, 1.0f, 0.0f);//设置观测点


}
int main(int argc, char * argv[])
{
    glutInit(&argc, argv);
    glutInitDisplayMode(GLUT_DEPTH | GLUT_DOUBLE | GLUT_RGBA);
    glutInitWindowPosition(100, 100);
    glutInitWindowSize(600, 600);
    glutCreateWindow("圆柱");
    glutDisplayFunc(renderScene);
    glutIdleFunc(renderScene); //指定程序空闲时调用函数
    glutReshapeFunc(changeSize); //指定窗口形状变化时的回调函数
    glEnable(GL_DEPTH_TEST);
    init();
    glutMainLoop();
    return 0;
}