Week 12 邱

#第12週上課重點

1.  3D TRT轉動
2.  矩陣、投影矩陣
3.  攝影機運鏡
4.  會動的機器人
5.  （補）MP3播放

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◎播MP3

把檔案跟專案放在同一個資料夾中

#include <iostream>
#include "CMP3_MCI.h"  ///(1) 放在同一個程式碼專案的目錄中哦
CMP3_MCI myMP3 ;  ///(2) 宣告一個變數,叫 myMP3

using namespace std ;
///在 main()函式裡面

int main( )
{
     myMP3.Load("yukai.mp3");   /// "C:/dropbox/yukai.mp3"     myMP3.Play( );   /// (4) Play the file
     int n;     cin >> n ;      cout << "Hello world!" << endl ;     return 0 ;
}

◎運鏡 glLookAt()

1.jsyeh.org/3dcg10下載

• data.zip → 桌面\windows\data\模型
• window.zip → 桌面\windows\project.exe
• glut32.dll → 桌面\windows\glut32.dl

#include <GL/glut.h>

float eyeX=0, eyeY=0, eyeZ=1;

float centerX=0, centerY=0, centerZ=0;

float upX=0, upY=1, upZ=0;

float angle=0;

static void display(void)
{

    glMatrixMode(GL_PROJECTION) ;

    glLoadIdentity( ) ;

    gluPerspective(60,1,0.001,10000) ;

    glMartrixMode(GL_MODELVIEW) ;

    glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);    glColor3d(1,0,0);

    angle += 0.01;

    eyeX = cos(angle);

    eyeZ = 2*sin(angle);

    glPushMatrix( );    gluLookAt(eyeX, eyeY, eyeZ,                    centerX, centerY, centerZ,                    upX, upY, upZ);    glutSolidTeapot(0.3);    glPopMatrix( );    glutSwapBuffers( );
}

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 };

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();

}