Week14

攝影機、投影矩陣

至jsyeh.org/3dcg10/下載 win32、glut32.dll、data

開啟 Projection

垂直投影法gluPerspective(fovy投影範圍(大小),aspect投影寬度,zNear投影前遠近,zFar後鏡遠近);

近的

遠的

glutReshapeFunc()函式

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() ;

    gluLookAt(0,3,3, 0,0,0, 0,1,0);

}

 gluLookAt(0,3,3, 0,0,0, 0,1,0);