opengl（glut + linux）学习（一）

opengl（glut + linux）学习（一）

ubuntu安装配置
1.下载虚拟机
2.安装光驱iso
3.配置虚拟机
4.进入bios修改虚拟
codeblocks安装配置
1.更新库
2.sudo apt-get update
3.sudo apt-get install codeblocks
opengl（glut）/（glfw + glad）配置

sudo apt-get update
sudo apt-get install build-essential 
sudo apt-get install libgl1-mesa-dev
sudo apt-get install libglu1-mesa-dev 
sudo apt-get install freeglut3-dev

codeblocks配置opengl

project -> Build Options -> Linkersettings

添加文件：libGL.so  libglut.so libGLU.so(全路径/usr/lib/x86***)

测试代码

/*
 * GLUT Shapes Demo
 *
 * Written by Nigel Stewart November 2003
 *
 * This program is test harness for the sphere, cone
 * and torus shapes in GLUT.
 *
 * Spinning wireframe and smooth shaded shapes are
 * displayed until the ESC or q key is pressed.  The
 * number of geometry stacks and slices can be adjusted
 * using the + and - keys.
 */
 
#ifdef __APPLE__
#include <GLUT/glut.h>
#else
#include <GL/glut.h>
#endif
 
#include <stdlib.h>
 
static int slices = 16;
static int stacks = 16;
 
/* GLUT callback Handlers */
 
static void resize(int width, int height)
{
    const float ar = (float) width / (float) height;
 
    glViewport(0, 0, width, height);
    glMatrixMode(GL_PROJECTION);
    glLoadIdentity();
    glFrustum(-ar, ar, -1.0, 1.0, 2.0, 100.0);
 
    glMatrixMode(GL_MODELVIEW);
    glLoadIdentity() ;
}
 
static void display(void)
{
    const double t = glutGet(GLUT_ELAPSED_TIME) / 1000.0;
    const double a = t*90.0;
 
    glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
    glColor3d(1,0,0);
 
    glPushMatrix();
        glTranslated(-2.4,1.2,-6);
        glRotated(60,1,0,0);
        glRotated(a,0,0,1);
        glutSolidSphere(1,slices,stacks);
    glPopMatrix();
 
    glPushMatrix();
        glTranslated(0,1.2,-6);
        glRotated(60,1,0,0);
        glRotated(a,0,0,1);
        glutSolidCone(1,1,slices,stacks);
    glPopMatrix();
 
    glPushMatrix();
        glTranslated(2.4,1.2,-6);
        glRotated(60,1,0,0);
        glRotated(a,0,0,1);
        glutSolidTorus(0.2,0.8,slices,stacks);
    glPopMatrix();
 
    glPushMatrix();
        glTranslated(-2.4,-1.2,-6);
        glRotated(60,1,0,0);
        glRotated(a,0,0,1);
        glutWireSphere(1,slices,stacks);
    glPopMatrix();
 
    glPushMatrix();
        glTranslated(0,-1.2,-6);
        glRotated(60,1,0,0);
        glRotated(a,0,0,1);
        glutWireCone(1,1,slices,stacks);
    glPopMatrix();
 
    glPushMatrix();
        glTranslated(2.4,-1.2,-6);
        glRotated(60,1,0,0);
        glRotated(a,0,0,1);
        glutWireTorus(0.2,0.8,slices,stacks);
    glPopMatrix();
 
    glutSwapBuffers();
}
 
 
static void key(unsigned char key, int x, int y)
{
    switch (key)
    {
        case 27 :
        case 'q':
            exit(0);
            break;
 
        case '+':
            slices++;
            stacks++;
            break;
 
        case '-':
            if (slices>3 && stacks>3)
            {
                slices--;
                stacks--;
            }
            break;
    }
 
    glutPostRedisplay();
}
 
static void idle(void)
{
    glutPostRedisplay();
}
 
const GLfloat light_ambient[]  = { 0.0f, 0.0f, 0.0f, 1.0f };
const GLfloat light_diffuse[]  = { 1.0f, 1.0f, 1.0f, 1.0f };
const GLfloat light_specular[] = { 1.0f, 1.0f, 1.0f, 1.0f };
const GLfloat light_position[] = { 2.0f, 5.0f, 5.0f, 0.0f };
 
const GLfloat mat_ambient[]    = { 0.7f, 0.7f, 0.7f, 1.0f };
const GLfloat mat_diffuse[]    = { 0.8f, 0.8f, 0.8f, 1.0f };
const GLfloat mat_specular[]   = { 1.0f, 1.0f, 1.0f, 1.0f };
const GLfloat high_shininess[] = { 100.0f };
 
/* Program entry point */
 
int main(int argc, char *argv[])
{
    glutInit(&argc, argv);
    glutInitWindowSize(640,480);
    glutInitWindowPosition(10,10);
    glutInitDisplayMode(GLUT_RGB | GLUT_DOUBLE | GLUT_DEPTH);
 
    glutCreateWindow("GLUT Shapes");
 
    glutReshapeFunc(resize);
    glutDisplayFunc(display);
    glutKeyboardFunc(key);
    glutIdleFunc(idle);
 
    glClearColor(1,1,1,1);
    glEnable(GL_CULL_FACE);
    glCullFace(GL_BACK);
 
    glEnable(GL_DEPTH_TEST);
    glDepthFunc(GL_LESS);
 
    glEnable(GL_LIGHT0);
    glEnable(GL_NORMALIZE);
    glEnable(GL_COLOR_MATERIAL);
    glEnable(GL_LIGHTING);
 
    glLightfv(GL_LIGHT0, GL_AMBIENT,  light_ambient);
    glLightfv(GL_LIGHT0, GL_DIFFUSE,  light_diffuse);
    glLightfv(GL_LIGHT0, GL_SPECULAR, light_specular);
    glLightfv(GL_LIGHT0, GL_POSITION, light_position);
 
    glMaterialfv(GL_FRONT, GL_AMBIENT,   mat_ambient);
    glMaterialfv(GL_FRONT, GL_DIFFUSE,   mat_diffuse);
    glMaterialfv(GL_FRONT, GL_SPECULAR,  mat_specular);
    glMaterialfv(GL_FRONT, GL_SHININESS, high_shininess);
 
    glutMainLoop();
 
    return EXIT_SUCCESS;
}