AvgBS

<?php
//The purpose of this script is to help me figure out if I am averaging and translating colors correctly for the ring spectrometer

$fiel = "1.png";
list($width, $height, $type, $attr) = getimagesize($fiel);
echo "<img src=\"". $fiel."\" $attr alt=\"getimagesize() example\" />";
$im = imagecreatefrompng("1.png");
$Pi = pi();

$centerX = $width / 2;
$centerY = $height / 2;
echo "<br>The picture here is " . $width . " wide, and " . $height . " tall. <br>";
echo "<br>The center of the image is at " .$centerX . ", " . $centerY ;
echo '<br>Test Trig Fucntions php <br> Get all cordinates for a circle<br>';
//$r = 1 ;
$sum = 0;
//echo 'Radiuz == ' . $r . '<br> X, Y, PixelColour at that point.<br><br>';

//Max radius
if ($centerX < $centerY){
    $maxRad = $centerX - 1;
}
    elseif
        ($centerY <= $centerX){
        $maxRad = $centerY -1;
    }





echo "Maximumux Radius is: " . $maxRad  . "<br><br>Ring Number, Average Value:<br>";

for($r=1; $r<=$maxRad; $r++ ){
    for ($a=0; $a<=360; $a++) {

       $ax =  $r*cos($a*$Pi/180) + $centerX ; //x
       $ay =  $r*sin($a*$Pi/180) + $centerY ; //y
       $PXCol = imagecolorat($im, $ax, $ay); //outputs a decimal number for color
//     echo $ax . ", " . $ay . ", " . $PXCol . "<br>";
            $sum = $sum + $PXCol;
            $avg = $sum / 360;
            $trunc = round($avg);
        }
        echo  $r . ", " . dechex($trunc) . "<br>";
}

// choose a color for the ellipse
$ellipseColor = imagecolorallocate($im, 0, 0, 255);

// draw the white ellipse
imagefilledellipse($im, $centerX, $centerY, 300, 300, $ellipseColor);

// Output the image.
//header("Content-type: image/png");
//imagepng($im);
//echo "<br>Trucated Average:  ".$trunc."<br>";
//echo "<br>Average in Hex:  ". dechex($trunc) ."<br>";
?>