public static function get_sc_bbox($raw_sc)
{
$min_lat = $max_lat = $min_lon = $max_lon = null;
foreach ($raw_sc->stops as $i => $stop) {
if ($pt = Sourcemap_Proj_Point::fromGeometry($stop->geometry)) {
$pt = Sourcemap_Proj::transform('EPSG:900913', 'WGS84', $pt);
if ($min_lat === null || $pt->y < $min_lat) {
$min_lat = $pt->y;
}
if ($max_lat === null || $pt->y > $max_lat) {
$max_lat = $pt->y;
}
if ($min_lon === null || $pt->x < $min_lon) {
$min_lon = $pt->x;
}
if ($max_lon === null || $pt->x > $max_lon) {
$max_lon = $pt->x;
}
}
}
$bbox = array($min_lat, $min_lon, $max_lat, $max_lon);
return $bbox;
}
public static function get_image($raw_sc)
{
$params = array('size' => '1024x768', 'styleid' => 4993, 'format' => 'png32');
$markers = array();
$paths = array();
$stop_dict = array();
$min_lat = $max_lat = $min_lon = $max_lon = null;
foreach ($raw_sc->stops as $i => $stop) {
# TODO: address hard limit of 100 stops.
if ($pt = Sourcemap_Proj_Point::fromGeometry($stop->geometry)) {
$pt = Sourcemap_Proj::transform('EPSG:900913', 'WGS84', $pt);
if ($min_lat === null || $pt->y < $min_lat) {
$min_lat = $pt->y;
}
if ($max_lat === null || $pt->y > $max_lat) {
$max_lat = $pt->y;
}
if ($min_lon === null || $pt->x < $min_lon) {
$min_lon = $pt->x;
}
if ($max_lon === null || $pt->x > $max_lon) {
$max_lon = $pt->x;
}
$color = '008000';
if (isset($stop->attributes, $stop->attributes->color)) {
$stcolor = $stop->attributes->color;
if (preg_match('/^#?([A-Fa-f0-9]{3}|[A-Fa-f0-9]{6})$/', $stcolor)) {
$color = ltrim($stcolor, '#');
}
}
$sz = 16;
if (isset($stop->attributes, $stop->attributes->size) && is_numeric($stop->attributes->size)) {
$sz = (int) $stop->attributes->size;
$sz += 16;
}
#$markerimg = "http://chart.apis.google.com/chart?cht=it&chs={$sz}x{$sz}&chco=$color&chx=ffffff,8&chf=bg,s,00000000&ext=.png";
$markerimg = "http://chart.apis.google.com/chart?cht=it&chs={$sz}x{$sz}&chco={$color}&chx=ffffff,8&chf=bg,s,00000000&ext=.png";
$markers[] = 'url:' . urlencode($markerimg) . '|opacity:0.85|' . $pt->y . ',' . $pt->x;
}
$stop_dict[$stop->local_stop_id] = $stop;
}
$bbox = array($min_lat, $min_lon, $max_lat, $max_lon);
foreach ($raw_sc->hops as $i => $hop) {
$geom = Sourcemap_Wkt::read($hop->geometry);
$fromst = Sourcemap_Proj_Point::fromGeometry($stop_dict[$hop->from_stop_id]->geometry);
$fromst = Sourcemap_Proj::transform('EPSG:900913', 'WGS84', $fromst);
$tost = Sourcemap_Proj_Point::fromGeometry($stop_dict[$hop->to_stop_id]->geometry);
$tost = Sourcemap_Proj::transform('EPSG:900913', 'WGS84', $tost);
$bentpts = self::make_bent_line($fromst, $tost);
$pts = array();
foreach ($bentpts as $bpi => $bp) {
$pts[] = sprintf("%f,%f", $bp->y, $bp->x);
}
$paths[] = 'color:green|weight:3|opacity:1|' . join('|', $pts);
}
$ps = array();
foreach ($params as $k => $v) {
$ps[] = "{$k}={$v}";
}
foreach ($markers as $i => $m) {
$ps[] = 'marker=' . $m;
}
foreach ($paths as $i => $p) {
$ps[] = 'path=' . $p;
}
if ($bbox[0] || $bbox[1] || $bbox[2]) {
$ps[] = sprintf("bbox=%s", join(',', $bbox));
} else {
$ps[] = 'center=0,0';
$ps[] = 'zoom=2';
}
$ps = join($ps, '&');
$ch = curl_init();
curl_setopt($ch, CURLOPT_URL, self::get_base_url());
curl_setopt($ch, CURLOPT_POST, true);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
curl_setopt($ch, CURLOPT_POSTFIELDS, $ps);
return curl_exec($ch);
}
public function render()
{
$this->stitch_tiles();
list($nwxt, $nwyt, $throwaway) = $this->tile_numbers[0][0];
#$se = new Sourcemap_Proj_Point($this->tiles_bounds[3], $this->tiles_bounds[2]);
#list($sext,$seyt) = Cloudmade_Tiles::get_tile_number($se->y, $se->x, $this->zoom);
$stops = array();
foreach ($this->raw_sc->stops as $stop) {
$pt = Sourcemap_Proj_Point::fromGeometry($stop->geometry);
$pt = Sourcemap_Proj::transform('EPSG:900913', 'WGS84', $pt);
$lon = $pt->x;
$lat = $pt->y;
list($xt, $yt) = Cloudmade_Tiles::get_tile_number($lat, $lon, $this->zoom);
list($xto, $yto) = Cloudmade_Tiles::get_tile_offset($lat, $lon, $this->zoom);
$x = ($xt - $nwxt) * 256 + $xto;
$y = ($yt - $nwyt) * 256 + $yto;
$stops[$stop->local_stop_id] = (object) array('stop' => $stop, 'x' => $x, 'y' => $y);
}
foreach ($this->raw_sc->hops as $i => $hop) {
$from = $stops[$hop->from_stop_id];
$to = $stops[$hop->to_stop_id];
$this->draw_hop2($hop, $from, $to);
//$this->draw_hop($hop, $from, $to);
}
foreach ($stops as $sid => $st) {
$this->draw_stop($st->stop, $st->x, $st->y);
}
/*ob_start();
imagepng($this->tiles_img);
$imgdata = ob_get_contents();
ob_end_clean();
return $imgdata;*/
return $this->tiles_img;
}