opengl学习笔记

#include <gl/glut.h>
//正方形的位置和大小
GLfloat x1 = 100.0f;
GLfloat y1 = 150.0f;
GLsizei rsize = 50;
//正方形运动变化的步长
GLfloat xstep = 1.0f;
GLfloat ystep = 1.0f;
//窗口的大小
GLfloat windowWidth;
GLfloat windowHeight;

void RenderScene()
{
    glClear(GL_COLOR_BUFFER_BIT);
    glColor3f(1.0f, 0.0f, 0.0f);
    glRectf(x1, y1, x1 + rsize, y1 + rsize);

    glutSwapBuffers();//清空命令缓冲区并交换帧缓存
}
void ChangeSize(GLsizei w, GLsizei h)
{
    if (h == 0)
    {
        h = 1;
    }
    glViewport(0, 0, w, h);

    glMatrixMode(GL_PROJECTION);
    glLoadIdentity();

    if (w <= h)
    {
        windowHeight = 250.0f*h / w;
        windowWidth = 250.0f;
    }
    else
    {
        windowHeight = 250.0f;
        windowWidth = 250.0f*w / h;
    }
    glOrtho(0.0f, windowWidth, 0.0f, windowHeight, 1.0f, -1.0f);
    glMatrixMode(GL_MODELVIEW);
    glLoadIdentity();
}
void TimerFunction(int value)
{
    //处理到达窗口边界的正方形，使之反弹
    if (x1 > windowWidth - rsize || x1 < 0)
    {
        xstep = -xstep;
    }

    if (y1 > windowHeight - rsize || y1 < 0)
    {
        ystep = -ystep;
    }
    if (x1 > windowWidth - rsize)
    {
        x1 = windowWidth - rsize - 1;
    }
    if (y1 > windowHeight - rsize)
    {
        y1 = windowHeight - rsize - 1;
    }
    //根据步长修改正方形的位置
    x1 += xstep;
    y1 += ystep;

    //用新坐标重新绘图
    glutPostRedisplay();
    glutTimerFunc(50, TimerFunction, value);
}
void SetupRC()
{
    //设置窗口的清除色为蓝色
    glClearColor(0.0f, 0.0f, 1.0f, 1.0f);
}

void main()
{
    glutInitDisplayMode(GLUT_DOUBLE | GLUT_RGB);
    glutCreateWindow("Bounce");

    glutDisplayFunc(RenderScene);
    glutReshapeFunc(ChangeSize);
    glutTimerFunc(500, TimerFunction, 1);

    SetupRC();
    glutMainLoop();
}

#include "stdafx.h"
#include<iostream>
#include "time.h"
#include <windows.h>
#include <stdio.h>
#include<conio.h>
using namespace std;

#define wide 49 

#define gao 24 
#define high 6 
int yanhua[gao][wide], hang, lie, i, j, temp, pc, flag;
char ch;
////////////////////////////上升函数 
void SS()
{
    void printchar();
    int midw1, midw, midw2;
    srand((int)time(NULL));
    for (hang = gao; hang >= high; hang--)//上升阶段 
    {
        midw = wide / 2 + pc * 2;
        midw1 = wide - pc * 6;
        midw2 = wide / 2 - pc * 6;
        yanhua[gao][midw] = 10;
        yanhua[gao][midw1] = 10;
        yanhua[gao][midw2] = 10;
        system("cls");//清理屏幕 
        printchar();
        if (hang < gao)
        {
            int temp;
            for (temp = gao; temp > hang; temp--)
            {
                if (temp <= hang + 5)
                {
                    yanhua[temp][midw] = 20;//产生尾巴 
                    yanhua[temp][midw1] = 20;
                    yanhua[temp][midw2] = 20;
                }
                else
                {
                    yanhua[temp][midw] = 0;//清除尾巴 
                    yanhua[temp][midw1] = 0;
                    yanhua[temp][midw2] = 0;
                }
            }
            yanhua[hang + 1][midw] = 10;//重设烟花头 
            yanhua[hang + 1][midw1] = 10;
            yanhua[hang + 1][midw2] = 10;
        }
        if (hang == 5)
        {
            int temp;
            for (temp = gao; temp > hang; temp--)yanhua[temp][midw] = 0;
            yanhua[hang + 1][midw] = 10;
        }
        Sleep(10);
    }
}

///////////////////////////////爆炸函数 
void BZ()
{
    void printchar();
    void randnum();
    for (temp = 1; temp <= 3; temp++)
    {
        randnum();
        system("cls");
        printchar();
        Sleep(40);
    }
    for (i = 0; i < gao; i++)
    {
        for (j = 0; j < wide; j++)yanhua[i][j] = 0;
    }
}
//////////////////////////////产生随机数函数 
void randnum()
{
    srand((int)time(0));
    for (hang = 0; hang < gao; hang++)
    {
        for (lie = 0; lie < wide; lie++)
        {
            yanhua[hang][lie] = (int)((10 * rand()) / RAND_MAX);
        }
    }
}
///////////////////////////////输出图形函数 
void printchar()
{
    for (i = 0; i < gao; i++)
    {
        for (j = 0; j < wide; j++)
        {
            if (yanhua[i][j] == 0)cout << " ";
            else if (yanhua[i][j] == 10)cout << "●";
            else if (yanhua[i][j] == 20)cout << "‖";
            else if (yanhua[i][j] == 1)cout << "*";
            else if (yanhua[i][j] == 2)cout << "。.";
            else cout << " ";
        }//输出烟花 
        cout << endl;
    }
}
////////////////////////倒计时函数 
void djs()
{
    cout << "精彩不容错过……";
    Sleep(1000);
    system("cls");
    void printchar();
    for (temp = 3; temp >= 1; temp--)
    {
        switch (temp)
        {
        case 1:
            for (i = 2; i <= 15; i++)
            {
                for (j = wide / 2; j <= wide / 2 + 1; j++)yanhua[i][j] = 1;
            }break;
        case 2:
            for (i = 2; i <= 15; i++)
            {
                switch (i)
                {
                case 2:case 3:case 8:case 9:case 14:case 15:
                    for (j = wide / 2 - 7; j <= wide / 2 + 8; j++)yanhua[i][j] = 1; break;
                case 4:case 5:case 6:case 7:
                    for (j = wide / 2 + 7; j <= wide / 2 + 8; j++)yanhua[i][j] = 1; break;
                default:
                    for (j = wide / 2 - 7; j <= wide / 2 - 6; j++)yanhua[i][j] = 1; break;
                }
            }break;
        case 3:
            for (i = 2; i <= 15; i++)
            {
                switch (i)
                {
                case 2:case 3:case 8:case 9:case 14:case 15:
                    for (j = wide / 2 - 7; j <= wide / 2 + 8; j++)yanhua[i][j] = 1; break;
                default:
                    for (j = wide / 2 + 7; j <= wide / 2 + 8; j++)yanhua[i][j] = 1; break;
                }
            }break;
        }
        printchar();
        Sleep(1000);
        for (i = 0; i < gao; i++)
        {
            for (j = 0; j < wide; j++)yanhua[i][j] = 0;
        }
        system("cls");
    }
    cout << "烟花开始.....";
    Sleep(500);
}
/////////////////////////流星雨 
void lxy()
{
    int flag, n;
    srand((int)time(0));
    for (hang = 0; hang < gao; hang++)
    {
        for (lie = 0; lie < wide; lie++)
        {
            yanhua[hang][lie] = (int)((100 * rand()) / RAND_MAX);
        }
    }
    for (flag = 0; flag <= 4; flag++)
    {
        for (temp = 1; temp < wide; temp++)
        {
            for (i = 0, n = 0; i < gao; i++)
            {
                for (j = wide - 1; j >= 0; j--)
                {
                    switch (yanhua[i][j])
                    {
                    case 56:
                    {
                        cout << "★_";
                        n++;
                        if (n % 6 == 0)
                        {
                            yanhua[i - 2][j - 1] = 56;
                            yanhua[i][j] = 0;
                        }
                        else
                        {
                            yanhua[i][j + i] = 56;
                            yanhua[i][j] = 0;
                        }
                        Sleep(0);
                    }break;
                    case 0:
                    {
                        cout << "--";
                        yanhua[i][j] = 1;
                    }break;
                    default:cout << " ";
                    }
                }
            }
            system("cls");
        }
        Sleep(80);
    }
}
//////////////////////////////输出文字 
void printword()
{
    char ch;
    cout << endl;
    char Word1[180] = "送你一只小熊维尼，让它每天陪着你，和你分享它的蜂蜜，甜到你的心里！";
    for (i = 0; Word1[i] != NULL; i++)
    {
        cout << Word1[i];
        Sleep(50);
    }
    cout << endl;
    cout << "┴┬┴┬／￣＼＿／￣＼" << endl;
    cout << "┬┴┬┴▏　　▏▔▔▔▔＼ " << endl;
    cout << "┴┬┴／＼　／　　　　　　﹨ " << endl;
    cout << "┬┴∕　　　　　　　／　　　） " << endl;
    cout << "┴┬▏　　　　　　　　●　　▏ " << endl;
    cout << "┬┴▏　　　　　　　　　　　▔█　 " << endl;
    cout << "┴◢██◣　　　　　＼＿＿＿／ " << endl;
    cout << "┬█████◣　　　　　　　／　　 " << endl;
    cout << "┴█████████████◣ " << endl;
    cout << "◢██████████████▆▄ " << endl;
    cout << "█◤◢██◣◥█████████◤＼ " << endl;
    cout << "◥◢████　████████◤　　 ＼ " << endl;
    cout << "┴█████　██████◤　　　　　 ﹨ " << endl;
    cout << "┬│　　　│█████◤　　　　　　　　▏ " << endl;
    cout << "┴│　　　│　　　　　　　　　　　　　　▏ " << endl;
    cout << "┬ ∕　　　 ∕　　　　／▔▔▔＼　　　　 ∕ " << endl;
    cout << "┴/＿＿＿／﹨　　　∕　　　　　﹨　　／＼ " << endl;
    cout << "┬┴┬┴┬┴＼ 　　 ＼ 　　　　　﹨／　　 ﹨ " << endl;
    cout << "┴┬┴┬┴┬┴ ＼＿＿＿＼　　　　 ﹨／▔＼﹨ ▔＼ " << endl;
    cout << "▲△▲▲╓╥╥╥╥╥╥╥╥＼　　 ∕　 ／▔﹨／▔﹨ " << endl;
    cout << "　＊＊╠╬╬╬╬╬╬╬╬＊﹨　　／　　／／ " << endl;
    cout << " *********的维尼熊*****************" << endl;
}
int _tmain(int argc, _TCHAR* sargv[])
{
    system("color 0f");
    djs();/////////////////////////倒计时 
    for (pc = 1; pc <= 10; pc++)///////////////放烟花 
    {
        SS();
        switch (pc)
        {
        case 1:system("color 14"); break;
        case 6:system("color 6f"); break;
        case 2:system("color 2b"); break;
        case 9:system("color 91"); break;
        case 3:system("color 3e"); break;
        case 7:system("color 79"); break;
        case 4:system("color 4f"); break;
        case 10:system("color 8a"); break;
        case 5:system("color 5e"); break;
        case 8:system("color a5"); break;
        }
        BZ();
        system("cls");
        system("color 0f");
    }
    char Word2[180] = " 今天是元宵节，看完了烟花，我们来看下流星雨吧!现实中流星雨不常见，现在，就让
我为你制造一场流星雨！可以借机许个愿望吧！
";
    for (i = 0; Word2[i] != NULL; i++)
    {
        cout << Word2[i];
        Sleep(100);
    }


    lxy();
    char Word3[100] = " 流星雨做的有点丑，但是也期望你元宵节快乐！
";
    for (i = 0; Word3[i] != NULL; i++)
    {
        cout << Word3[i];
        Sleep(50);
    }
    printword();
    cout << "元宵节快乐！";
    for (flag; flag <= 1; flag++)ch = getchar();


    exit(0);
    //////////////////////////

    

}

中文教学：https://learnopengl-cn.github.io/01%20Getting%20started/03%20Hello%20Window/

b站付老师：https://www.bilibili.com/video/av24353839

GLUT库已经很老了，尽量使用FLFW。

属性：

        VC++目录：

               更改include

               更改lib

        链接器-输入：

          opengl32.lib glfw3.lib  glew32s.lib