<?php
// performs matrix functions to fit a template to a 3-point delineation
require_once $_SERVER['DOCUMENT_ROOT'] . '/include/main_func.php';
auth();
include_once "Math/Matrix.php";
$temPoints = $_POST['temPoints'];
$eyeclicks = $_POST['eyeclicks'];
$original = array(array($temPoints[0]['x'], $temPoints[0]['y'], 1.0), array($temPoints[1]['x'], $temPoints[1]['y'], 1.0), array($temPoints[2]['x'], $temPoints[2]['y'], 1.0));
$m = new Math_Matrix($original);
$xnew = array($eyeclicks[0]['x'], $eyeclicks[1]['x'], $eyeclicks[2]['x']);
$ynew = array($eyeclicks[0]['y'], $eyeclicks[1]['y'], $eyeclicks[2]['y']);
$xvector = new Math_Vector($xnew);
$yvector = new Math_Vector($ynew);
$m1 = $m->cloneMatrix();
$x = @Math_Matrix::solve($m1, $xvector);
$a = round($x->get(0), 3);
$b = round($x->get(1), 3);
$c = round($x->get(2), 3);
$m2 = $m->cloneMatrix();
$y = @Math_Matrix::solve($m2, $yvector);
$d = round($y->get(0), 3);
$e = round($y->get(1), 3);
$f = round($y->get(2), 3);
$variables = array('a' => $a, 'b' => $b, 'c' => $c, 'd' => $d, 'e' => $e, 'f' => $f, 'fitPoints' => $_POST['fitPoints']);
echo json_encode($variables);
exit;
