121 lines
3.7 KiB
JavaScript
121 lines
3.7 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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// OSRM via marker routines
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// [find correct position for a via marker]
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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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OSRM.Via = {
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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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_findNearestRouteSegment: function( 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 p = OSRM.G.map.latLngToLayerPoint( new_via );
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var positions = OSRM.G.route.getPoints();
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for(var i=1; i<positions.length; i++) {
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var _sqDist = L.LineUtil._sqClosestPointOnSegment(p, positions[i-1], positions[i], true);
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if( _sqDist < min_dist) {
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min_dist = _sqDist;
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min_index = i;
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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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findViaIndex: function( 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 = OSRM.Via._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] = OSRM.Via._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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return new_via_index;
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},
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//function that draws a drag marker
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dragTimer: new Date(),
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drawDragMarker: function(event) {
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if( OSRM.G.route.isShown() == false)
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return;
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if( OSRM.G.dragging == true )
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return;
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// throttle computation
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if( (new Date() - OSRM.Via.dragTimer) < 25 )
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return;
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OSRM.Via.dragTimer = new Date();
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// get distance to route
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var minpoint = OSRM.G.route._current_route.route.closestLayerPoint( event.layerPoint );
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var min_dist = minpoint ? minpoint._sqDist : 1000;
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// get distance to markers
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var mouse = event.latlng;
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for(var i=0, size=OSRM.G.markers.route.length; i<size; i++) {
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if(OSRM.G.markers.route[i].label=='drag')
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continue;
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var position = OSRM.G.markers.route[i].getPosition();
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var dist = OSRM.G.map.project(mouse).distanceTo(OSRM.G.map.project(position));
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if( dist < 20 )
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min_dist = 1000;
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}
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// check whether mouse is over another marker
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var pos = OSRM.G.map.layerPointToContainerPoint(event.layerPoint);
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var obj = document.elementFromPoint(pos.x,pos.y);
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for(var i=0, size=OSRM.G.markers.route.length; i<size; i++) {
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if(OSRM.G.markers.route[i].label=='drag')
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continue;
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if( obj == OSRM.G.markers.route[i].marker._icon)
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min_dist = 1000;
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}
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// special care for highlight marker
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if( OSRM.G.markers.highlight.isShown() ) {
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if( OSRM.G.map.project(mouse).distanceTo(OSRM.G.map.project( OSRM.G.markers.highlight.getPosition() ) ) < 20 )
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min_dist = 1000;
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else if( obj == OSRM.G.markers.highlight.marker._icon)
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min_dist = 1000;
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}
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if( min_dist < 400) {
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OSRM.G.markers.dragger.setPosition( OSRM.G.map.layerPointToLatLng(minpoint) );
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OSRM.G.markers.dragger.show();
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} else
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OSRM.G.markers.dragger.hide();
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}
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}; |