[opengl]彩色立方体旋转

#ifndef GLUT_DISABLE_ATEXIT_HACK
#define GLUT_DISABLE_ATEXIT_HACK
#endif #define GLEW_STATIC
#include <GL/glew.h>
#include <GL/wglew.h>
#include <GL/freeglut.h>
#include <vector>
#include <glm/glm.hpp>
#include <glm/gtc/matrix_transform.hpp> //for matrices
#include <glm/gtc/type_ptr.hpp>
//undefine if u want to use the default bending constraint of pbd
#include<iostream>
using namespace std;

GLfloat rtx = 0.0f, rty = 0.0f, rtz = 0.0;
GLfloat step = 0.1;
//float exp1 = 1e-3;

void init()
{
    glLoadIdentity();
}
//
float rquad  = 0;
void move(){
    rquad += step;
    if(rquad>360)rquad = 0;
}
void draw(void)
{
    move();
    glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
    printf("%lf\n",rquad);
    glPushMatrix();
    glTranslatef(rtx, rty, rtz);

    glRotatef(rquad,1.0f,1.0f,1.0f);
    glScalef(0.3, 0.3, 0.3);
    glBegin(GL_QUADS);
    glColor3f(1, 0, 0);
    glVertex3f(-1.0f, -1.0f, 1.0f);// 前
    glColor3f(0, 1, 0);
    glVertex3f(1.0f, -1.0f, 1.0f);
    glColor3f(0, 0, 1);
    glVertex3f(1.0f, 1.0f, 1.0f);
    glColor3f(0, 1, 1);
    glVertex3f(-1.0f, 1.0f, 1.0f);

    glColor3f(1, 0, 0);
    glVertex3f(-1.0f, -1.0f, -1.0f);// 后
    glVertex3f(-1.0f, 1.0f, -1.0f);
    glVertex3f(1.0f, 1.0f, -1.0f);
    glVertex3f(1.0f, -1.0f, -1.0f);

    glColor3f(0, 1, 0);
    glVertex3f(-1.0f, 1.0f, -1.0f);// 上
    glVertex3f(-1.0f, 1.0f, 1.0f);
    glVertex3f(1.0f, 1.0f, 1.0f);
    glVertex3f(1.0f, 1.0f, -1.0f);

    glColor3f(0, 0, 1);
    glVertex3f(-1.0f, -1.0f, -1.0f);// 下
    glVertex3f(1.0f, -1.0f, -1.0f);
    glVertex3f(1.0f, -1.0f, 1.0f);
    glVertex3f(-1.0f, -1.0f, 1.0f);

    glColor3f(1, 1, 0);
    glVertex3f(1.0f, -1.0f, -1.0f);// 左
    glVertex3f(1.0f, 1.0f, -1.0f);
    glVertex3f(1.0f, 1.0f, 1.0f);
    glVertex3f(1.0f, -1.0f, 1.0f);

    glColor3f(0, 1, 1);
    glVertex3f(-1.0f, -1.0f, -1.0f);// 右
    glVertex3f(-1.0f, -1.0f, 1.0f);
    glVertex3f(-1.0f, 1.0f, 1.0f);
    glVertex3f(-1.0f, 1.0f, -1.0f);
    glEnd();
    glPopMatrix();
    glutSwapBuffers();
}

//float step = 0.001;

int main(int argc, char * argv[])
{
    glutInit(&argc, argv);
    glutInitDisplayMode(GLUT_DEPTH | GLUT_DOUBLE | GLUT_RGBA);
    glutInitWindowPosition(100, 100);
    glutInitWindowSize(320, 320);
    glutCreateWindow("Hello OpenGL");
    init();
    glutDisplayFunc(draw);
    glutIdleFunc(draw); //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);

    glutMainLoop();
    return 0;
}