63 lines
2.1 KiB
JavaScript
63 lines
2.1 KiB
JavaScript
/*
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU AFFERO General Public License as published by
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the Free Software Foundation; either version 3 of the License, or
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any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU Affero General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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or see http://www.gnu.org/licenses/agpl.txt.
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*/
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// store location of via points returned by server
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OSRM.GLOBALS.via_points = null;
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// find route segment of current route geometry that is closest to the new via node (marked by index of its endpoint)
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function findNearestRouteSegment( new_via ) {
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var min_dist = Number.MAX_VALUE;
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var min_index = undefined;
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var positions = OSRM.G.route.getPositions();
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for(var i=0; i<positions.length-1; i++) {
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var dist = dotLineLength( new_via.lng, new_via.lat, positions[i].lng, positions[i].lat, positions[i+1].lng, positions[i+1].lat, true);
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if( dist < min_dist) {
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min_dist = dist;
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min_index = i+1;
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}
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}
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return min_index;
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}
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// find the correct index among all via nodes to insert the new via node, and insert it
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function findViaPosition( new_via_position ) {
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// find route segment that is closest to click position (marked by last index)
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var nearest_index = findNearestRouteSegment( new_via_position );
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// find correct index to insert new via node
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var new_via_index = OSRM.G.via_points.length;
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var via_index = Array();
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for(var i=0; i<OSRM.G.via_points.length; i++) {
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via_index[i] = findNearestRouteSegment( new L.LatLng(OSRM.G.via_points[i][0], OSRM.G.via_points[i][1]) );
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if(via_index[i] > nearest_index) {
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new_via_index = i;
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break;
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}
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}
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// add via node
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var index = OSRM.G.markers.setVia(new_via_index, new_via_position);
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OSRM.G.markers.route[index].show();
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getRoute(OSRM.C.FULL_DESCRIPTION);
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return new_via_index;
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} |