root/samples/hajimete/sample16.php

DEFINITIONS

1. DrawQuadricObj
2. display
3. reshape
4. idle
5. otherInit

<?php

//光源(環境光､拡散光､鏡面光､位置)

$lightAmb = array(0.0, 0.0, 0.0, 1.0);
$lightDiff = array(1.0, 1.0, 1.0, 1.0);
$lightSpec = array(1.0, 1.0, 1.0, 1.0);
$lightPos = array(1.0, 1.0, 1.0, 0.0);//平行光源


//材質(環境光､拡散光､鏡面光､鏡面指数)

$pearlAmb = array(0.25,0.20725,0.20725,1.0);
$pearlDiff = array(1.0,0.829,0.829,1.0);
$pearlSpec = array(0.296648,0.296648,0.296648,1.0);
$pearlShin =  10.24;

//gluオブジェクト

$quadric = null;

//--------- GLUquadricオブジェクトの描画----------------//

function DrawQuadricObj()
{
    global $quadric;
        //シリンダ

        gluQuadricOrientation($quadric,GLU_OUTSIDE);
        gluCylinder($quadric, 0.5, 0.3, 1.0, 20, 15);

        //上面

        glPushMatrix();
                glTranslatef(0.0,0.0,1.0);//高さ分平行移動

                gluDisk($quadric, 0, 0.3, 20,10);
        glPopMatrix();

        //底面(法線の向きを逆にする)

        gluQuadricOrientation($quadric,GLU_INSIDE);
        gluDisk($quadric, 0, 0.5, 20,10);
}


//--------- 各種コールバック関数-------//

function display()
{
    global $lightPos;
    global $pearlAmb, $pearlDiff, $pearlSpec, $pearlShin;
    
        static $angle = 0;

        glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT );
        glLoadIdentity();
        gluLookAt(0.0, 1.5, 4,0, 0.0, 0.0, 0.0, 1.0, 0.0);
        
        //光源の位置設定

        glLightfv(GL_LIGHT0,GL_POSITION,$lightPos);

        //材質設定

        glPushMatrix();
        glRotatef($angle, 0.0, 1.0, 0.0);
        glMaterialfv(GL_FRONT_AND_BACK,GL_AMBIENT,$pearlAmb);
        glMaterialfv(GL_FRONT_AND_BACK,GL_DIFFUSE,$pearlDiff);
        glMaterialfv(GL_FRONT_AND_BACK,GL_SPECULAR,$pearlSpec);
        glMaterialf(GL_FRONT_AND_BACK,GL_SHININESS,$pearlShin);
        DrawQuadricObj();//描画

        glPopMatrix();

        glutSwapBuffers();
        if (++$angle >= 360) { $angle = 0; }
}

function reshape($w, $h)
{
        glViewport(0,0,$w,$h);
        glMatrixMode(GL_PROJECTION);
        glLoadIdentity();
        gluPerspective(30.0,$w/$h, 0.1, 200.0);
        glMatrixMode(GL_MODELVIEW);
}

function idle()
{
        glutPostRedisplay();
}

//--------- その他各種設定-----------//

function otherInit()
{
    global $lightAmb, $lightDiff, $lightSpec;
    global $quadric;

    glClearColor(1.0, 1.0, 1.0, 1.0);
        glClearDepth(1.0);
        glEnable(GL_DEPTH_TEST);

        //光源設定(環境､拡散､鏡面のみ)

        glLightfv(GL_LIGHT0,GL_AMBIENT,$lightAmb);
        glLightfv(GL_LIGHT0,GL_DIFFUSE,$lightDiff);
        glLightfv(GL_LIGHT0,GL_SPECULAR,$lightSpec);

        //光源とライティング有効化

        glEnable(GL_LIGHT0);
        glEnable(GL_LIGHTING);
        glEnable(GL_NORMALIZE);

        //GLUquadricオブジェクトの設定

        $quadric =  gluNewQuadric(); //オブジェクト生成

        gluQuadricDrawStyle($quadric, GLU_FILL); //ポリゴン描画

        gluQuadricNormals($quadric, GLU_SMOOTH); //シェーディング

}

//---------- メイン関数-------------//

glutInit($argv);
glutInitDisplayMode(GLUT_RGBA|GLUT_DEPTH|GLUT_DOUBLE);
glutInitWindowSize(640,480);
glutCreateWindow('GLUquadric Object');

//コールバック関数登録

glutDisplayFunc('display');
glutReshapeFunc('reshape');
glutIdleFunc('idle');

otherInit();//その他設定


glutMainLoop();
        
//不要になったら破棄

gluDeleteQuadric($quadric);//本来は終了処理部分で記述する

exit (0);