--- /dev/null
+<?php
+/* This file is part of Syj, Copyright (c) 2010-2011 Arnaud Renevier,
+ and is published under the AGPL license. */
+
+class Canvas {
+ protected $picture;
+
+ protected $width;
+ protected $height;
+ protected $margint;
+ protected $marginr;
+ protected $marginb;
+ protected $marginl;
+
+ protected $minx;
+ protected $miny;
+ protected $maxx;
+ protected $maxy;
+ protected $xdelta;
+ protected $ydelta;
+
+ protected $fontfile;
+ protected $fontsize;
+
+ function __construct($width, $height, $margint, $marginr, $marginb, $marginl) {
+ $this->width = $width;
+ $this->height = $height;
+ $this->margint = $margint;
+ $this->marginr = $marginr;
+ $this->marginb = $marginb;
+ $this->marginl = $marginl;
+
+ $this->minx = 0;
+ $this->miny = 0;
+ $this->maxx = $this->width;
+ $this->maxy = $this->height;
+
+ $this->picture = imagecreatetruecolor ($this->width, $this->height);
+ }
+
+ function __destruct() {
+ if ($this->picture) {
+ imagedestroy ($this->picture);
+ }
+ }
+
+ function setViewBox($minx, $miny, $maxx, $maxy) {
+ $this->xdelta = pow(10, floor(log10($maxx)));
+ $this->maxx = ceil ($maxx / $this->xdelta) * $this->xdelta;
+ $this->minx = floor ($minx / $this->xdelta) * $this->xdelta;
+
+ $this->ydelta = pow(10, floor(log10($maxy)));
+ $this->maxy = ceil ($maxy / $this->ydelta) * $this->ydelta;
+ $this->miny = floor ($miny / $this->ydelta) * $this->ydelta;
+
+ return $this;
+ }
+
+ function getViewBox() {
+ return array($this->minx, $this->miny, $this->maxx, $this->maxy);
+ }
+
+ function setThickness($thickness) {
+ imagesetthickness ($this->picture, $thickness);
+
+ return $this;
+ }
+
+ function setFont($fontfile, $fontsize) {
+ $this->fontfile = $fontfile;
+ $this->fontsize = $fontsize;
+
+ return $this;
+ }
+
+ function text($x, $y, $text, $color, $pos = "lt", $limits = array(null, null, null, null)) {
+ $bbox = imagettfbbox($this->fontsize, 0, $this->fontfile, $text);
+
+ switch (substr($pos, 0, 1)) {
+ case "r":
+ $x -= $bbox[2] - $bbox[0];
+ break;
+ case "c":
+ $x -= ($bbox[2] - $bbox[0]) / 2;
+ break;
+ case "l":
+ default:
+ break;
+ }
+
+ switch (substr($pos, 1, 1)) {
+ case "b":
+ $y -= $bbox[7] - $bbox[1];
+ break;
+ case "c":
+ $y -= ($bbox[7] - $bbox[1]) / 2;
+ break;
+ case "t":
+ default:
+ break;
+ }
+
+ list($limtop, $limright, $limbottom, $limleft) = $limits;
+
+ if (!is_null($limtop)) {
+ $y = max($limtop, $y);
+ }
+ if (!is_null($limright)) {
+ $x = min($limright, $x);
+ }
+ if (!is_null($limbottom)) {
+ $y = min($limbottom, $y);
+ }
+ if (!is_null($limleft)) {
+ $x = max($limleft, $x);
+ }
+
+ imagettftext($this->picture, $this->fontsize, 0, $x, $y, $this->color($color), $this->fontfile, $text);
+ }
+
+ function rect($x1, $y1, $x2, $y2, $color, $translate = false) {
+ imagefilledrectangle ($this->picture, $x1, $y1, $x2, $y2, $this->color($color));
+
+ return $this;
+ }
+
+ function line($x1, $y1, $x2, $y2, $color) {
+ imageline ($this->picture, $x1, $y1, $x2, $y2, $this->color($color));
+
+ return $this;
+ }
+
+ function draw($filename = null) {
+ imagepng($this->picture, $filename);
+
+ return $this;
+ }
+
+ private $colorcache = array();
+ function color($str) {
+ if (!isset ($this->colorcache[$str])) {
+ $r = "0x" . substr($str, 0, 2);
+ $g = "0x" . substr($str, 2, 2);
+ $b = "0x" . substr($str, 4, 2);
+ $this->colorcache[$str] = imagecolorallocate ($this->picture, $r, $g, $b);
+ }
+ return $this->colorcache[$str];
+ }
+
+ function canvasXPos($x) {
+ return round(($x - $this->minx) * ($this->width - $this->marginr - $this->marginl) / ($this->maxx - $this->minx)) + $this->marginl;
+ }
+ function canvasYPos($y) {
+ return $this->height - round(($y - $this->miny) * ($this->height - $this->marginb - $this->margint) / ($this->maxy - $this->miny)) - $this->margint;
+ }
+}
+
+class ProfileController extends Zend_Controller_Action {
+ public function init() {
+ if (!extension_loaded('gd')) {
+ throw new Syj_Exception_NotImplemented("gd is not installed");
+ }
+ $this->_helper->SyjNoRender->disableRender();
+ }
+
+ public function indexAction() {
+ $url = $this->getRequest()->getUserParam('url');
+ if (!isset($url)) {
+ throw new Syj_Exception_NotFound('Not Found', 404);
+ }
+
+ $pathMapper = new Syj_Model_PathMapper();
+ $path = new Syj_Model_Path();
+ if (!$pathMapper->findByUrl($url, $path)) {
+ if (is_numeric($url) and $pathMapper->hasexisted($url)) {
+ throw new Syj_Exception_NotFound('Gone', 410);
+ } else {
+ throw new Syj_Exception_NotFound('Not Found', 404);
+ }
+ }
+
+ $size = $this->getRequest()->getQuery('size', 'big');
+ if ($size == 'small') {
+ $width = 300;
+ $height = 225;
+ } else {
+ $width = 800;
+ $height = 600;
+ $size = 'big';
+ }
+
+ $file = $path->getProfileCache($size);
+ if (file_exists($file)) {
+ if (filesize($file) == 0) {
+ throw new Syj_Exception_NotImplemented("could not compute altitude profile");
+ }
+ $this->sendFile($file);
+ return;
+ }
+
+ try {
+ $service = $this->_helper->SyjAltiService->service();
+ /* we accept 2% of invalid values in the profile */
+ $profile = $path->getAltiProfile($service, 2 / 100);
+ } catch(Syj_Exception_NotImplemented $e) {
+ @touch($file);
+ throw $e;
+ }
+
+ $canvas = $this->drawProfile($profile, $width, $height);
+ $canvas->draw($file);
+ $this->sendFile($file);
+ }
+
+ protected function drawProfile($profile, $width, $height) {
+ $margint = 50;
+ $marginr = 50;
+ $marginb = 50;
+ $marginl = 50;
+
+ $last = end($profile);
+ $maxdist = $last[0];
+
+ $minalti = array(array(0, INF));
+ $maxalti = array(array(0, -INF));
+ foreach ($profile as $coords) {
+ $alti = $coords[1];
+
+ if ($alti == $minalti[0][1]) {
+ $minalti []= array($coords[0], $alti);
+ } else if ($alti < $minalti[0][1]) {
+ $minalti = array(array($coords[0], $alti));
+ }
+
+ if ($alti == $maxalti[0][1]) {
+ $maxalti []= array($coords[0], $alti);
+ } else if ($alti > $maxalti[0][1]) {
+ $maxalti = array(array($coords[0], $alti));
+ }
+ }
+
+ $canvas = new Canvas($width, $height, $margint, $marginr, $marginb, $marginl);
+ $canvas->setViewBox(0, $minalti[0][1], $maxdist, $maxalti[0][1]);
+
+ $canvas->rect(0, 0, $width, $height, "FFFFFF");
+
+ $slopecolor = function ($slope) {
+ if ($slope > 18) {
+ return "FF0000"; // red
+ } else if ($slope > 12) {
+ return "FF4000";
+ } else if ($slope > 7) {
+ return "FF8000";
+ } else if ($slope > 3) {
+ return "FFC000";
+ } else if ($slope > 0) {
+ return "FFFF00"; // yellow
+ } else if ($slope > -3) {
+ return "00FFFF";
+ } else if ($slope > -7) {
+ return "00C0FF";
+ } else if ($slope > -12) {
+ return "0080FF";
+ } else if ($slope > -18) {
+ return "0040FF";
+ } else {
+ return "0000FF"; // blue;
+ }
+ };
+
+ $canvas->setThickness (2);
+
+ $prev = null;
+ foreach ($profile as $coord) {
+ if (!is_null($prev)) {
+ $dist = $coord[0];
+ $alti = $coord[1];
+ $prevdist = $prev[0];
+ $prevalti = $prev[1];
+
+ $slope = 100 * ($alti - $prevalti) / ($dist - $prevdist) ;
+ $canvas->line($canvas->canvasXPos($prevdist), $canvas->canvasYPos($prevalti),
+ $canvas->canvasXPos($dist), $canvas->canvasYPos($alti),
+ $slopecolor($slope), true);
+ }
+ $prev = $coord;
+ }
+
+ $canvas->setThickness (1);
+ $canvas->setFont(APPLICATION_PATH . '/resources/' . 'DejaVuSans.ttf', 10);
+
+ list ($minx, $miny, $maxx, $maxy) = $canvas->getViewBox();
+
+ $deltax = pow(10, floor(log10($maxx - $minx)));
+ foreach (range($minx, $maxx, $deltax) as $x) {
+ $canvas->line($canvas->canvasXPos($x), $height - $marginb + 10, $canvas->canvasXPos($x), $height - $marginb, "000000");
+ if ($deltax < 1000) {
+ $text = $x . "m";
+ } else {
+ $text = round($x / 1000) . "km";
+ }
+ $canvas->text($canvas->canvasXPos($x), $height - $marginb + 10 + 3, $text, "000000", "cb");
+ }
+ $canvas->line($marginl, $height - $marginb, $width - $marginr, $height - $marginb, "000000");
+
+ $deltay = pow(10, floor(log10($maxy - $miny)));
+ foreach (range($miny, $maxy, $deltay) as $y) {
+ $canvas->line($marginl - 10, $canvas->canvasYPos($y), $marginl, $canvas->canvasYPos($y), "000000");
+ $text = $y . "m";
+ $canvas->text($marginl - 10 - 3, $canvas->canvasYPos($y), $text, "000000", "rc");
+ }
+ $canvas->line($marginl, $height - $marginb, $marginr, $margint, "000000");
+
+ list($minx, $miny, $maxx, $maxy) = $canvas->getViewBox();
+ $limits = array($canvas->canvasYPos($maxy) + 3, $canvas->canvasXPos($maxx) - 3, $canvas->canvasYPos($miny) - 3, $canvas->canvasXPos($minx) + 3);
+
+ $prev = null;
+ foreach ($minalti as $coords) {
+ list ($dist, $alti) = $coords;
+ if (!is_null($prev)) {
+ $xdist = $canvas->canvasXPos($dist) - $canvas->canvasXPos($prev[0]);
+ /* second label would be less than 10px from previous one. Do
+ not display it */
+ if ($xdist < 10) {
+ continue;
+ }
+ }
+ $text = round($alti) . "m";
+ $xpos = $canvas->canvasXPos($dist);
+ $ypos = $canvas->canvasYPos($alti);
+ $canvas->text($xpos, $ypos + 5, $text, "000000", "cb", $limits);
+ $canvas->rect($xpos - 1, $ypos - 1, $xpos + 1, $ypos + 1, "000000");
+ $prev = $coords;
+ }
+
+ $prev = null;
+ foreach ($maxalti as $coords) {
+ list ($dist, $alti) = $coords;
+ if (!is_null($prev)) {
+ $xdist = $canvas->canvasXPos($dist) - $canvas->canvasXPos($prev[0]);
+ /* second label would be less than 10px from previous one. Do
+ not display it */
+ if ($xdist < 10) {
+ continue;
+ }
+ }
+ $text = round($alti) . "m";
+ $xpos = $canvas->canvasXPos($dist);
+ $ypos = $canvas->canvasYPos($alti);
+ $canvas->text($xpos, $ypos - 5, $text, "000000", "ct", $limits);
+ $canvas->rect($xpos - 1, $ypos - 1, $xpos + 1, $ypos + 1, "000000");
+ $prev = $coords;
+ }
+
+ return $canvas;
+ }
+
+ protected function sendFile($file) {
+ $lastmodified = filemtime($file);
+
+ $request = $this->getRequest();
+ $response = $this->getResponse();
+
+ $response->setHeader('Content-Type', 'image/png', true)
+ ->setHeader('Content-Length', filesize($file), true);
+
+ if ($request->getServer("HTTP_IF_MODIFIED_SINCE")) {
+ if ($lastmodified <= strtotime($request->getServer("HTTP_IF_MODIFIED_SINCE"))) {
+ $response->setHttpResponseCode(304);
+ return;
+ }
+ }
+
+ // no-cache is needed otherwise IE does not try to get new version.
+ $response->setHeader ('Cache-control', 'no-cache, must-revalidate', true)
+ ->setHeader("Last-Modified", gmdate("D, d M Y H:i:s", filemtime($file)) . " GMT", true);
+
+ readfile($file);
+ }
+}
projects / syj.git / commitdiff