/**
* draws an outlined two color polygon
*
* @param int $im image identifier as returned by ImageCreateFromGIF() etc.
* @param string $coords coordinate string, format : "x1,y1,x2,y2,..." with every (x,y) pair is
* an ending point of a line of the polygon
* @param int $c1 color identifier 1
* @param int $c3 color identifier 2
* @param boolean $closed true: the first and the last point will be connected with a line
*/
function drawPoly(&$im, $coords, $c1, $c2, $closed, $a_x_ratio = 1, $a_y_ratio = 1)
{
if ($closed) {
$p = 0;
} else {
$p = 1;
}
$anz = ilMapArea::countCoords($coords);
if ($anz < 3 - $p) {
return;
}
$c = explode(",", $coords);
for ($i = 0; $i < $anz - $p; $i++) {
$this->drawLine($im, $c[$i * 2] / $a_x_ratio, $c[$i * 2 + 1] / $a_y_ratio, $c[($i * 2 + 2) % (2 * $anz)] / $a_x_ratio, $c[($i * 2 + 3) % (2 * $anz)] / $a_y_ratio, $c1, $c2);
}
}
/**
* edit shape of existing map area
*/
function setShape($a_handle = true)
{
global $lng, $ilCtrl;
if ($a_handle) {
$this->handleMapParameters();
}
if ($_POST["areatype2"] != "") {
$_SESSION["il_map_edit_area_type"] = $_POST["areatype2"];
}
if ($_SESSION["il_map_area_nr"] != "") {
$_POST["area"][0] = $_SESSION["il_map_area_nr"];
}
if (!isset($_POST["area"])) {
ilUtil::sendFailure($lng->txt("no_checkbox"), true);
$ilCtrl->redirect($this, "editMapAreas");
}
if (count($_POST["area"]) > 1) {
ilUtil::sendFailure($lng->txt("cont_select_max_one_item"), true);
$ilCtrl->redirect($this, "editMapAreas");
}
if ($_SESSION["il_map_edit_mode"] != "edit_shape") {
$_SESSION["il_map_area_nr"] = $_POST["area"][0];
$_SESSION["il_map_edit_mode"] = "edit_shape";
$_SESSION["il_map_edit_target_script"] = $ilCtrl->getLinkTarget($this, "setShape", "", false, false);
}
$area_type = $_SESSION["il_map_edit_area_type"];
$coords = $_SESSION["il_map_edit_coords"];
$cnt_coords = ilMapArea::countCoords($coords);
// decide what to do next
switch ($area_type) {
// Rectangle
case "Rect":
if ($cnt_coords < 2) {
return $this->editMapArea(true, false, false, "shape", $_POST["area"][0]);
} else {
if ($cnt_coords == 2) {
return $this->saveArea();
}
}
break;
// Circle
// Circle
case "Circle":
if ($cnt_coords <= 1) {
return $this->editMapArea(true, false, false, "shape", $_POST["area"][0]);
} else {
if ($cnt_coords == 2) {
$c = explode(",", $coords);
$coords = $c[0] . "," . $c[1] . ",";
// determine radius
$coords .= round(sqrt(pow(abs($c[3] - $c[1]), 2) + pow(abs($c[2] - $c[0]), 2)));
}
$_SESSION["il_map_edit_coords"] = $coords;
return $this->saveArea();
}
break;
// Polygon
// Polygon
case "Poly":
if ($cnt_coords < 1) {
return $this->editMapArea(true, false, false, "shape", $_POST["area"][0]);
} else {
if ($cnt_coords < 3) {
return $this->editMapArea(true, true, false, "shape", $_POST["area"][0]);
} else {
return $this->editMapArea(true, true, true, "shape", $_POST["area"][0]);
}
}
break;
// Whole Picture
// Whole Picture
case "WholePicture":
return $this->saveArea();
}
}
