function process()
{
if (!isset($this->gpx) || !file_exists($this->gpx)) {
$this->_err[] = "no gpx file input";
return false;
}
$xml = simplexml_load_file($this->gpx);
$arr = obj2array($xml);
// 1. 取得 bounds, 轉換成 twd67 最近的 bounds
//list($x,$y,$x1,$y1) = $this->get_bound($arr);
list($x, $y, $x1, $y1) = $this->get_bbox(file_get_contents($this->gpx));
if ($this->taiwan == 0) {
$this->_err[] = "超出台澎範圍或檔案剖析有誤,請回報";
return false;
}
if ($this->taiwan == 1) {
list($tx, $ty) = proj_geto672(array($x, $y));
list($tx1, $ty1) = proj_geto672(array($x1, $y1));
} else {
list($tx, $ty) = proj_geto672_ph(array($x, $y));
list($tx1, $ty1) = proj_geto672_ph(array($x1, $y1));
}
// 若是自動 get_bound 的話 多 expend 一格
if (isset($this->input_bound67['x'])) {
// 免算
$tl = array($this->input_bound67['x'], $this->input_bound67['y']);
$br = array($this->input_bound67['x1'], $this->input_bound67['y1']);
} else {
// 如果需要多 index 的話, 才 expend
// 並且不是範圍已經輸入了
if ($this->show_label_wpt == 1) {
$expend = 1000;
} else {
$expend = 0;
}
/* 四邊都 expend
$tl = array( floor($tx / 1000)*1000 - $expend, ceil($ty / 1000)*1000 + $expend);
$br = array( ceil($tx1 / 1000)*1000 + $expend, floor($ty1 / 1000)*1000 - $expend);
*/
// 只在右手邊 expend
$tl = array(floor($tx / 1000) * 1000, ceil($ty / 1000) * 1000);
$br = array(ceil($tx1 / 1000) * 1000 + $expend, floor($ty1 / 1000) * 1000);
if ($this->do_fit_a4 == 1) {
list($tl, $br) = $this->fit_a4($tl, $br);
}
}
// 檢查一下是不是太大範圍
if ($br[0] - $tl[0] >= $this->limit['km_x'] || $tl[1] - $br[1] >= $this->limit['km_y']) {
$this->_err[] = sprintf("超出範圍: x=%d y=%d (請刪除不需要之航跡)", $br[0] - $tl[0], $tl[1] - $br[1]);
return false;
}
// 計算字型比例 依照若是標準地圖產生器出圖, 18px (1km 315px)
$this->fontsize = intval(18 * ($this->width / (($br[0] - $tl[0]) / 1000) / 315));
// 若是產生縮圖
if ($this->fontsize < $this->default_fontsize) {
$this->fontsize = $this->default_fontsize;
}
// 存入 bounds
$this->bound_twd67 = array("tl" => $tl, "br" => $br, "ph" => $this->taiwan == 2 ? 1 : 0);
if ($this->taiwan == 1) {
$this->bound = array("tl" => proj_67toge2($tl), "br" => proj_67toge2($br));
} else {
$this->bound = array("tl" => proj_67toge2_ph($tl), "br" => proj_67toge2_ph($br));
}
// 計算比例
$this->ratio['x'] = $this->width / ($this->bound['br'][0] - $this->bound['tl'][0]);
// 經緯度比例這樣會出錯
//$this->height = round(($this->bound['tl'][1] - $this->bound['br'][1])*$this->ratio);
$this->height = ($tl[1] - $br[1]) / 1000 * 315;
$this->ratio['y'] = $this->height / ($this->bound['tl'][1] - $this->bound['br'][1]);
// 2. 取得所有 trk point 的高度 作為 colorize trk 的依據
// $this->dump();
// 像 oruxmap 會產生只有一層的 trk, 而不會有 trk 的 array => 為了不想重寫 parser, 放到 array 去
if (isset($arr['trk']['trkseg'])) {
$arr['trk'][0] = $arr['trk'];
}
// 共有多少 tracks?
$total_tracks = count($arr['trk']);
$min = 8000;
$max = 0;
for ($i = 0; $i < $total_tracks; $i++) {
if (!isset($arr['trk'][$i]['name'])) {
// skip track without "name"
// echo "no name:" . var_dump($arr['trk']);
continue;
}
$this->track[$i] = array("name" => $arr['trk'][$i]['name']);
$j = 0;
foreach ($arr['trk'][$i]['trkseg']['trkseg'] as $trk_point) {
// skip route/track without '@attributes'
// echo "get point:";
// print_r($trk_point);
if (!isset($trk_point['@attributes']['lon'])) {
if (!isset($trk_point['trkpt']['lon'])) {
continue;
} else {
$trk_point['@attributes']['lon'] = $trk_point['trkpt']['lon'];
$trk_point['@attributes']['lat'] = $trk_point['trkpt']['lat'];
}
}
if ($trk_point['@attributes']['lon'] > $this->bound['br'][0] || $trk_point['@attributes']['lon'] < $this->bound['tl'][0] || $trk_point['@attributes']['lat'] > $this->bound['tl'][1] || $trk_point['@attributes']['lat'] < $this->bound['br'][1]) {
// echo "oob!!!!!\n";
continue;
}
if (isset($trk_point['ele'])) {
// 如果高度小於 0
if ($trk_point['ele'] < 0) {
$trk_point['ele'] = 0;
$arr['trk'][$i]['trkseg']['trkseg']['ele'] = 0;
}
if ($trk_point['ele'] < $min) {
$min = $trk_point['ele'];
} else {
if ($trk_point['ele'] > $max) {
$max = $trk_point['ele'];
}
}
} else {
$trk_point['ele'] = -100;
}
$this->track[$i]['point'][$j] = $trk_point;
$this->track[$i]['point'][$j]['rel'] = $this->rel_px($trk_point['@attributes']['lon'], $trk_point['@attributes']['lat']);
$j++;
}
// 處理 track 的高度
}
$this->ele_bound = array($min, $max);
//$this->dump();
//$this->waypoint = $arr['wpt'];
$j = 0;
if (isset($arr['wpt'])) {
foreach ($arr['wpt'] as $waypoint) {
if ($waypoint['@attributes']['lon'] > $this->bound['br'][0] || $waypoint['@attributes']['lon'] < $this->bound['tl'][0] || $waypoint['@attributes']['lat'] > $this->bound['tl'][1] || $waypoint['@attributes']['lat'] < $this->bound['br'][1]) {
continue;
}
$this->waypoint[$j] = $waypoint;
$this->waypoint[$j]['rel'] = $this->rel_px($waypoint['@attributes']['lon'], $waypoint['@attributes']['lat']);
if ($this->taiwan == 1) {
$this->waypoint[$j]['tw67'] = proj_geto672(array($waypoint['@attributes']['lon'], $waypoint['@attributes']['lat']));
} else {
$this->waypoint[$j]['tw67'] = proj_geto672_ph(array($waypoint['@attributes']['lon'], $waypoint['@attributes']['lat']));
}
$j++;
}
}
unset($arr);
//$this->dump();
return true;
}
function img_from_tiles_lonlat($base_dir, $tl_lon, $tl_lat, $br_lon, $br_lat, $zoom, $ph = 0, $debug = 0, $tmpdir = "/dev/shm")
{
// 左上
$dir = $base_dir . "/" . $zoom;
// 右下
//$x1 = $x + $shiftx * 1000;
//$y1 = $y - $shifty * 1000;
$v3image = "imgs/v3.png";
if ($debug) {
error_log("img_from_tiles_lonlat({$base_dir}, \${$tl_lon}, {$tl_lat}, {$br_lon}, {$br_lat}, {$zoom},{$ph}, {$debug}); \n");
}
if ($ph == 0) {
// 台灣本島 proj_67toge2 使用 cs2cs 把 67 轉 97
//list ($tl_lon,$tl_lat) = proj_67toge2(array($x,$y));
$a = LatLong2XYZ($tl_lon, $tl_lat, $zoom);
//list ($br_lon,$br_lat) = proj_67toge2(array($x1,$y1));
$b = LatLong2XYZ($br_lon, $br_lat, $zoom);
list($x, $y) = proj_geto672(array($tl_lon, $tl_lat));
list($x1, $y1) = proj_geto672(array($br_lon, $br_lat));
} else {
//list ($tl_lon,$tl_lat) = ph_proj_67toge2(array($x,$y));
$a = LatLong2XYZ($tl_lon, $tl_lat, $zoom);
//list ($br_lon,$br_lat) = ph_proj_67toge2(array($x1,$y1));
$b = LatLong2XYZ($br_lon, $br_lat, $zoom);
list($x, $y) = ph_proj_geto672(array($tl_lon, $tl_lat));
list($x1, $y1) = ph_proj_geto672(array($br_lon, $br_lat));
}
$shiftx = ($x1 - $x) / 1000;
$shifty = ($y - $y1) / 1000;
if ($debug) {
error_log("x={$x} y={$y} x1={$x1} y1={$y1} tl={$tl_lon},{$tl_lat} br={$br_lon},{$br_lat}");
error_log("a=" . print_r($a, true) . " b=" . print_r($b, true));
}
$xx = $b[0] - $a[0] + 1;
$yy = $b[1] - $a[1] + 1;
// 先偷抓一次看看
for ($j = $a[1]; $j <= $b[1]; $j++) {
for ($i = $a[0]; $i <= $b[0]; $i++) {
$imgname = sprintf("%d_%d.png", $i, $j);
if (!file_exists("{$dir}/{$imgname}")) {
exec("wget -q -O /dev/null 'http://rs.happyman.idv.tw/map/tw25k2001/zxy/16_{$i_}{$j}.png'");
}
}
}
$img = array();
for ($j = $a[1]; $j <= $b[1]; $j++) {
for ($i = $a[0]; $i <= $b[0]; $i++) {
$imgname = sprintf("%d_%d.png", $i, $j);
if (file_exists("{$dir}/{$imgname}")) {
if ($debug) {
error_log("{$dir}/{$imgname} ok");
}
$img[] = $imgname;
} else {
if ($debug) {
error_log("{$dir}/{$imgname} not exist");
}
return array(FALSE, "超出圖資範圍");
}
}
}
if ($debug) {
error_log(print_r($img, true));
error_log(print_r("{$xx} x {$yy}", true));
}
// 左上點所在的 tile,
$rect = getLatLonXYZ($a[0], $a[1], $zoom);
if ($debug) {
error_log("getLatLonXYZ({$a['0']},{$a['1']},{$zoom})");
error_log(print_r($rect, true));
}
$rx = 256 / $rect->width;
$ry = 256 / $rect->height;
$px_shiftx = ($tl_lon - $rect->x) * $rx;
if ($debug) {
error_log(sprintf("tl y: %f rect->y %f\n", $tl_lat, $rect->y));
}
$px_shifty = 256 - ($tl_lat - $rect->y) * $ry;
if ($debug) {
error_log(sprintf("px_shiftx,y = %f %f\n", $px_shiftx, $px_shifty));
}
// 要取的範圍 width px
$px_width = ($br_lon - $tl_lon) * $rx;
$px_height = ($tl_lat - $br_lat) * $ry;
if ($debug) {
error_log(sprintf("px_width,y = %f %f\n", $px_width, $px_height));
}
// 拼圖
$outimage = tempnam($tmpdir, "MTILES");
$cmd = sprintf("cd %s; montage %s -mode Concatenate -tile %dx%d png:%s", $dir, implode(" ", $img), $xx, $yy, $outimage);
if ($debug) {
error_log("cmd=" . $cmd);
}
exec($cmd, $out, $ret);
if ($ret != 0) {
return array(FALSE, "err:" . $cmd);
}
$cropimage = tempnam($tmpdir, "CTILES");
$resize = sprintf("-adaptive-resize %dx%d\\!", 315 * $shiftx, 315 * $shifty);
// $resize = "";
$cmd = sprintf("convert %s -crop %dx%d+%d+%d %s -contrast-stretch 1x1%% -sharpen 1.5x1.5 miff:- | composite -compose bumpmap -gravity northeast %s - png:%s", $outimage, ceil($px_width), ceil($px_height), round($px_shiftx), round($px_shifty), $resize, $v3image, $cropimage);
if ($debug) {
error_log("cmd=" . $cmd);
}
exec($cmd, $out, $ret);
unlink($outimage);
if ($ret == 0) {
return array(TRUE, $cropimage);
} else {
return array(FALSE, "err:" . $cmd);
}
}