root/samples/hajimete/sample14.php

DEFINITIONS

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

<?php

//頂点データ(8頂点､xyz３要素)

$vertexes =
    array(
        array(-0.5, 0.5, 0.5),//v0

        array(-0.5, -0.5, 0.5),//v1

        array(0.5, -0.5, 0.5),//v2

        array(0.5, 0.5, 0.5),//v3


        array(-0.5, 0.5, -0.5),//v4

        array(-0.5, -0.5, -0.5),//v5

        array(0.5, -0.5, -0.5),//v6

        array(0.5, 0.5, -0.5)//v7

        );

//------------ 各種材質パラメータ--------------//

//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)

$goldAmb = array( 0.24725, 0.1995, 0.0745, 1.0 );
$goldDiff = array( 0.75164, 0.60648 , 0.22648, 1.0 );
$goldSpec = array( 0.628281, 0.555802,0.366065,1.0 );
$goldShin =  51.2 ;


//立方体の描画

function drawCube()
{
    global $vertexes;
        //top

        glNormal3f(0,1,0);
        glBegin(GL_QUADS);
        glVertex3fv($vertexes[0]);
        glVertex3fv($vertexes[3]);
        glVertex3fv($vertexes[7]);
        glVertex3fv($vertexes[4]);
        glEnd();

        //buttom

        glNormal3f(0,-1,0);
        glBegin(GL_QUADS);
        glVertex3fv($vertexes[5]);
        glVertex3fv($vertexes[6]);
        glVertex3fv($vertexes[2]);
        glVertex3fv($vertexes[1]);
        glEnd();

        //front

        glNormal3f(0,0,1);
        glBegin(GL_QUADS);
        glVertex3fv($vertexes[0]);
        glVertex3fv($vertexes[1]);
        glVertex3fv($vertexes[2]);
        glVertex3fv($vertexes[3]);
        glEnd();

        //back

        glNormal3f(0,0,-1);
        glBegin(GL_QUADS);
        glVertex3fv($vertexes[4]);
        glVertex3fv($vertexes[7]);
        glVertex3fv($vertexes[6]);
        glVertex3fv($vertexes[5]);
        glEnd();

        //left

        glNormal3f(-1,0,0);
        glBegin(GL_QUADS);
        glVertex3fv($vertexes[0]);
        glVertex3fv($vertexes[4]);
        glVertex3fv($vertexes[5]);
        glVertex3fv($vertexes[1]);
        glEnd();

        //right

        glNormal3f(1,0,0);
        glBegin(GL_QUADS);
        glVertex3fv($vertexes[3]);
        glVertex3fv($vertexes[2]);
        glVertex3fv($vertexes[6]);
        glVertex3fv($vertexes[7]);
        glEnd();
}

//--------- 各種コールバック関数-------//

function display()
{
        global $lightPos;
    global $goldAmb, $goldDiff, $goldSpec, $goldShin;

        static $angle = 0;

        glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT );
        glLoadIdentity();
        gluLookAt(0.0, 3.0, 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);

        //材質設定と描画

        glPushMatrix();
        glRotatef($angle, 0.0, 1.0, 0.0);
        glMaterialfv(GL_FRONT_AND_BACK,GL_AMBIENT,$goldAmb);
        glMaterialfv(GL_FRONT_AND_BACK,GL_DIFFUSE,$goldDiff);
        glMaterialfv(GL_FRONT_AND_BACK,GL_SPECULAR,$goldSpec);
        glMaterialf(GL_FRONT_AND_BACK,GL_SHININESS,$goldShin);
        drawCube();//立方体の描画

        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;

        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);//法線ベクトルの正規化

}

//---------- メイン関数-------------//

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

//コールバック関数登録

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

otherInit();//その他設定


glutMainLoop();

exit (0);