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d940200ef0
This is better because it makes explicit that osmInferRestriction needs an actual turn now (from/to with vertex, etc)
61 lines
2.1 KiB
JavaScript
61 lines
2.1 KiB
JavaScript
import {
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osmInferRestriction,
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osmRelation
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} from '../osm';
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// Create a restriction relation for `turn`, which must have the following structure:
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//
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// {
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// from: { node: <node ID>, way: <way ID> },
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// via: { node: <node ID>, ways: [<way ID>,<way ID>,...] },
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// to: { node: <node ID>, way: <way ID> },
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// restriction: <'no_right_turn', 'no_left_turn', etc.>
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// }
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//
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// This specifies a restriction of type `restriction` when traveling from
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// `from.node` in `from.way` toward `to.node` in `to.way` via `via.node` OR `via.ways`.
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// (The action does not check that these entities form a valid intersection.)
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//
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// If `restriction` is not provided, it is automatically determined by
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// osmInferRestriction.
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//
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// From, to, and via ways should be split before calling this action.
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// (old versions of the code would split the ways here, but we no longer do it)
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//
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// For testing convenience, accepts an ID to assign to the new relation.
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// Normally, this will be undefined and the relation will automatically
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// be assigned a new ID.
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//
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export function actionRestrictTurn(turn, projection, restrictionID) {
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return function(graph) {
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var fromWay = graph.entity(turn.from.way);
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var toWay = graph.entity(turn.to.way);
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var viaNode = turn.via.node && graph.entity(turn.via.node);
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var viaWays = turn.via.ways && turn.via.ways.map(function(id) { return graph.entity(id); });
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var members = [];
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members.push({ id: fromWay.id, type: 'way', role: 'from' });
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if (viaNode) {
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members.push({ id: viaNode.id, type: 'node', role: 'via' });
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} else if (viaWays) {
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viaWays.forEach(function(viaWay) {
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members.push({ id: viaWay.id, type: 'way', role: 'via' });
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});
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}
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members.push({ id: toWay.id, type: 'way', role: 'to' });
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return graph.replace(osmRelation({
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id: restrictionID,
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tags: {
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type: 'restriction',
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restriction: turn.restriction || osmInferRestriction(graph, turn, projection)
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},
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members: members
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}));
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};
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}
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