涵030 week08筆記

 week08-1、2

Light

主程式為:

glfioat light_pos[] = ( x,y,z,1.00)

1.00、0.00  平移&垂直的光

08-3開始寫程式

1.備份程式碼

2.

3.主要函式

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 };

-------------------------------------------------------------------------------------------

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);

08-4

08-5

更改打光點

const GLfloat light_position[] = { 2.0f, 5.0f, -5.0f, 0.0f };

08-6

變化視窗程式碼:

 glutInitWindowSize(500,500);          變更視窗大小

 glutInitWindowPosition(100,200);    變更窗口位置

 glutCreateWindow                             開一個視窗

glutMainLoop                                     讓程式繼續進行

08-7下次上課導入3D模型

考試練習:  https://jsyeh.org/gl/opengl_10_func.html