public function cornealCylAndAxis($plus = 0)
{
$pwr = $this->cornealCyl(1, 1);
if ($plus) {
return "+" . $pwr . " x " . numToAxisString(fixAxis($this->cornealCylAxis() + 90));
}
return "-" . $pwr . " x " . numToAxisString($this->cornealCylAxis());
}
function prettyRxString($sph = 0, $cyl = 0, $axis = 0, $round = 0.25)
{
$axis = fixAxis($axis);
$sphString = numToDiopterString($sph, 1, $round);
$cylString = numToDiopterString($cyl, 1, $round);
$axisString = "x " . numToAxisString($axis);
if (abs($sph) < $round / 2) {
$sphString = @"plano";
}
if (abs($sph) < $round / 2 && abs($cyl) < $round / 2) {
return @"plano";
}
if (abs($cyl) < $round / 2) {
$cylString = "sph";
$axisString = "";
}
return $sphString . " " . $cylString . " " . $axisString;
}
function kStringBreaker($str)
{
//echo ($str);
$str = str_replace(" ", "", $str);
//remove whitespace
$returnK = new KeratoObject();
//if just a single number is provided
if (is_numeric($str)) {
$returnK->num1 = $str;
$returnK->num2 = $str;
$returnK->meridian1 = 90;
return $returnK;
}
$kParts = explode("/", $str);
if (count($kParts) < 2) {
$k1 = $str;
$k2 = $str;
} else {
$k1 = $kParts[0];
//should be 42@90 ..or 42
$k2 = $kParts[1];
//should be 42@90 ..or 42
}
if (is_numeric($k1)) {
//if the first half is just a number eg)43
$num1 = $k1;
} else {
$k1parts = explode("@", $k1);
if (count($k1parts) > 1) {
$num1 = $k1parts[0];
$meridian1 = $k1parts[1];
} else {
//didn't contain "@"
$num1 = intval($k1);
}
}
if (is_numeric($k2)) {
//if the second half is just a number eg)43
$num2 = $k2;
} else {
$k2parts = explode("@", $k2);
if (count($k2parts) > 1) {
$num2 = $k2parts[0];
$meridian2 = $k2parts[1];
} else {
//didn't contain "@"
$num2 = intval($k2);
}
}
if (!isset($meridian2)) {
if (isset($meridian1)) {
$meridian2 = fixAxis($meridian1 + 90);
} else {
$meridian2 = 90;
}
}
if (!isset($meridian1)) {
if (isset($meridian2)) {
$meridian1 = fixAxis($meridian2 + 90);
} else {
$meridian1 = 180;
}
}
if (!$num2) {
$num2 = $num1;
}
$returnK->num1 = $num1;
$returnK->num2 = $num2;
$returnK->meridian1 = $meridian1;
$returnK->meridian2 = $meridian2;
return $returnK;
}
public function subtractRx($rx2)
{
//this & rx2 are Rx objects. "This" is usually the MR, rx2 is the spectacles
$newAxis = 0;
$newSph = 0;
$gamma = 0;
$F2 = 0;
$xSph = $this->sphP();
$xCyl = $this->cylP();
$xAxis = $this->axisP();
//echo $this->prettyString();
//echo "<br/>";
//echo $rx2->prettyString();
//echo "<br/>";
if ($rx2->cylP() > 0.375) {
//if the cyl is significant
$theta = $xAxis - $rx2->axisP();
//find the smallest diff btwn the axes
if ($theta > 90) {
$theta = 180 - $theta;
}
if ($theta < -90) {
$theta = -180 - $theta;
}
//echo "<p>theta: " . $theta . "</p>";
$a = $xCyl * sin(deg2rad(2 * $theta));
//trace ("a:"+a);
$b = $xCyl * cos(deg2rad(2 * $theta)) - $rx2->cylP();
//trace ("b:"+b);
$F2 = sqrt($a * $a + $b * $b);
if ($b < 0) {
$F2 = -$F2;
}
//this line added 4/7/04
if ($F2 != 0) {
$gamma = rad2deg(asin($a / $F2) / 2);
}
//echo "<p>gamma: " . $gamma . "</p>";
$newAxis = $rx2->axisP() + $gamma;
//echo "<p>newAxis : " . $newAxis . "</p>";
$newSph = $xSph - $rx2->sphP() - ($rx2->cylP() + $F2 - $xCyl) / 2;
} else {
// rx2 is essentially spherical
$newSph = $xSph - $rx2->sphP();
$F2 = $xCyl;
$newAxis = $xAxis;
}
//trace("newAxis ",newAxis);
//trace("a = "+a);trace("b = "+b);trace ("$F2 = "+$F2);trace("gamma:"+gamma);trace("new axis:"+newAxis);trace("new sph:"+newSph);
$tempObj = new RxObject();
$tempObj->sph = $newSph;
$tempObj->cyl = $F2;
$tempObj->axis = fixAxis($newAxis);
//trace(eye+" residual Rx:"+tempObj.prettyString("+", false));
return $tempObj;
}
function getCrossFromParams($params)
{
extract($params);
//if (!isset($round) ) $round = .12;
if (!isset($totalSize)) {
$totalSize = 140;
}
if (!isset($crossSize)) {
$crossSize = $totalSize * 0.8;
}
$halfCross = $crossSize / 2;
$gutter = ($totalSize - $crossSize) / 2;
// label: 0= no label, 1=label in given cyl type; 2= both +/- cyl;
//3= if minus show minus, if plus show minus and plus
if (!isset($label)) {
$label = 0;
}
if (!isset($doVertex)) {
$doVertex = null;
}
if (!isset($doSphEquiv)) {
$doSphEquiv = null;
}
if (!isset($rxString) && !isset($kString)) {
return null;
}
//get the numbers and meridians if an Rx string is passed
if (isset($rxString)) {
$rxObject = rxStringBreaker($rxString);
if ($doVertex == 1) {
$rxObject = $rxObject->diffVertex(0);
}
if ($doSphEquiv == 1) {
$rxObject = rxStringBreaker($rxObject->sphericalEquivalent());
}
$num1 = numToDiopterString($rxObject->sphP(), 1);
$num2 = numToDiopterString($rxObject->sphP() + $rxObject->cylP(), 1);
$meridian1 = $rxObject->axisP();
}
if (isset($kString)) {
// echo "string: " . $kString;
$kObject = kStringBreaker($kString);
$num1 = numToDiopterString($kObject->pwr1D(), 0) . "<br>(" . numToMMString($kObject->pwr1mm()) . ")";
$num2 = numToDiopterString($kObject->pwr2D(), 0) . "<br>(" . numToMMString($kObject->pwr2mm()) . ")";
$meridian1 = $kObject->meridian1;
$meridian2 = $kObject->meridian2;
if ($label > 0) {
$niceString1 = $kObject->prettyStringD();
}
if ($label == 2) {
$niceString2 = $kObject->prettyStringMM();
}
}
if ($label > 0 && isset($rxString)) {
if ($label == 1) {
$niceString1 = $doVertex == 1 ? $rxObject->prettyStringMinus() : $rxObject->prettyString();
}
if ($label == 2) {
$niceString1 = $rxObject->prettyStringPlus();
$niceString2 = $rxObject->prettyStringMinus();
}
if ($label == 3) {
$plusCyl = $rxObject->isPlusCyl();
//the cyl type the original Rx was given in
$niceString1 = $rxObject->prettyStringMinus();
if ($plusCyl == 1) {
$niceString2 = "(" . $rxObject->prettyStringPlus() . ")";
}
}
}
if (isset($bgImage)) {
switch ($bgImage) {
case "lens":
if (isset($rxObject) && $rxObject->isToric() == 1) {
$image = "/images/crosses/toric_lens.png";
} else {
$image = "/images/crosses/sphere_lens.png";
}
break;
case "spherelens":
$image = "/images/crosses/sphere_lens.png";
break;
case "toriclens":
$image = "/images/crosses/toric_lens.png";
break;
default:
$image = $bgImage;
}
}
//start the html and CSS we'll be returning
$html = "";
if (isset($header)) {
$html .= "<div class='opticalCrossLabel' style='font-weight:bold; text-align: center; margin: .5em;'>{$header}</div>";
}
$canvasCSS = "position: relative; height:" . $totalSize . "px; width: " . $totalSize . "px;";
if (isset($image)) {
$canvasCSS .= "background-image: url(" . $image . "); background-repeat:no-repeat;background-position:center; ";
}
$html .= "<div style='{$canvasCSS}'>";
$labelCSS = "width: 40px; height: 25px; position: absolute; text-align: center;";
//echo("toric " . $rxObject ->isToric() );
//don't need to worry about optical crosses if the lens is spherical
if (isset($rxObject) && $rxObject->isToric() == 0) {
// a spacer div
$html .= "<div style='margin: 0 " . $gutter . "px " . $gutter * 2 . "px; width: " . $crossSize . "px; height: " . $crossSize . "px'> </div>";
$html .= "<div style=' " . $labelCSS . " ; top: " . ($halfCross + 4) . "px; left: " . ($halfCross - 8) . "px; '>";
$html .= numToDiopterString($num1, 1);
$html .= "</div>";
} else {
//toric lenses
//an url to the optical cross images (it will be completed below - we need to calculate the angle to get the correct image)
if (!isset($crossImage)) {
$crossImage = "http://www.eyedock.com/images/crosses/cross";
}
if (!isset($meridian2)) {
$meridian2 = fixAxis($meridian1 + 90);
}
//find the closest 10 deg increment (for the image)
$imageAngle = fixAxis($meridian1);
$imageAngle = round($imageAngle / 10) * 10;
if ($imageAngle > 90) {
$imageAngle -= 90;
}
//echo $imageAngle;
$radAngle1 = $meridian1 * (M_PI / 180);
$radAngle2 = $meridian2 * (M_PI / 180);
$x1 = intval(cos($radAngle1) * ($halfCross + $gutter) + $halfCross) - 6;
$y1 = intval(-(sin($radAngle1) * ($halfCross + $gutter)) + $halfCross + $gutter / 2);
$x2 = intval(cos($radAngle2) * ($halfCross + $gutter) + $halfCross) - 6;
$y2 = intval(-(sin($radAngle2) * ($halfCross + $gutter)) + $halfCross + $gutter / 2);
$crossCSS = "width: " . $crossSize . "px; height: " . $crossSize . "px; margin:" . $gutter . "px";
$num1CSS = $labelCSS . "top: " . $y1 . "px; left: " . $x1 . "px; ";
$num2CSS = $labelCSS . "top: " . $y2 . "px; left: " . $x2 . "px; ";
$num1aCSS = $labelCSS . "bottom: " . ($y1 - $gutter / 2) . "px; right: " . $x1 . "px; ";
$num2aCSS = $labelCSS . "bottom: " . ($y2 - $gutter / 2) . "px; right: " . $x2 . "px; ";
$html .= "<img style='{$crossCSS}' src='" . $crossImage . $imageAngle . ".png" . "' />";
$html .= "<div class='cross_num1' style='{$num1CSS}' >" . $num1 . "</div>";
$html .= "<div class='cross_num2' style='{$num2CSS}' >" . $num2 . "</div>";
$html .= "<div class='cross_meridian1' style='{$num1aCSS}' >" . numToAxisString($meridian1) . "</div>";
$html .= "<div class='cross_meridian2' style='{$num2aCSS}' >" . numToAxisString($meridian2) . "</div>";
}
// end toric lenses / crosses
//add the labels, if wanted
if (isset($niceString1)) {
$css = "width: {$totalSize} px; text-align: center";
$html .= "<div class='opticalCrossLabel' style='{$css}'>" . $niceString1 . "</div>";
if (isset($niceString2)) {
$html .= "<div class='opticalCrossLabel' style='{$css}'>" . $niceString2 . "</div>";
}
}
if ($doVertex == 1) {
$html .= "<div class='opticalCrossLabel' style='{$css} ;font-size:smaller;opticalCrossLabel margin: .5em;'>(vertexed) </div>";
}
$html .= "</div>";
return $html;
}