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<?php list($width, $height, $type, $attr) = getimagesize("spc.jpg"); echo "<img src=\"spc.jpg\" $attr alt=\"getimagesize() example\" />"; $cntrX = $width / 2; $cntrY = $height / 2; echo "<br>The center of the image is at " .$cntrX . ", " . $cntrY ; echo '<br>Test Trig Fucntions php <br> Get all cordinates for a circle<br>'; $r = 5 ; echo 'Radiuz == ' . $r . '<br> X, Y, PixelColour at that point.<br><br>'; $im = imagecreatefromjpeg("spc.jpg"); $Pi = pi(); for ($a=0; $a<=360; $a++) { $ax = $r*cos($a*$Pi/180) ; //x $ay = $r*sin($a*$Pi/180) ; //y $PXCol = imagecolorat($im, $ax, $ay); echo $ax . ", " . $ay . ", " . $PXCol . "<br>"; } ?>
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