<!DOCTYPE html><html lang="en"><head><meta charset="utf-8"><meta name="viewport" content="width=device-width, initial-scale=1.0"><meta name="generator" content="rustdoc"><meta name="description" content="Source of the Rust file `map_model/src/objects/turn.rs`."><meta name="keywords" content="rust, rustlang, rust-lang"><title>turn.rs - source</title><link rel="stylesheet" type="text/css" href="../../../normalize.css"><link rel="stylesheet" type="text/css" href="../../../rustdoc.css" id="mainThemeStyle"><link rel="stylesheet" type="text/css" href="../../../light.css" id="themeStyle"><link rel="stylesheet" type="text/css" href="../../../dark.css" disabled ><link rel="stylesheet" type="text/css" href="../../../ayu.css" disabled ><script id="default-settings" ></script><script src="../../../storage.js"></script><script src="../../../crates.js"></script><noscript><link rel="stylesheet" href="../../../noscript.css"></noscript><link rel="alternate icon" type="image/png" 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id="crate-search"><option value="All crates">All crates</option></select><input class="search-input" name="search" disabled autocomplete="off" spellcheck="false" placeholder="Click or press ‘S’ to search, ‘?’ for more options…" type="search"></div><button type="button" id="help-button" title="help">?</button><a id="settings-menu" href="../../../settings.html" title="settings"><img width="18" height="18" alt="Change settings" src="../../../wheel.svg"></a></div></form></nav><section id="main" class="content"><div class="example-wrap"><pre class="line-numbers"><span id="1"> 1</span> <span id="2"> 2</span> <span id="3"> 3</span> <span id="4"> 4</span> <span id="5"> 5</span> <span id="6"> 6</span> <span id="7"> 7</span> <span id="8"> 8</span> <span id="9"> 9</span> <span id="10"> 10</span> <span id="11"> 11</span> <span id="12"> 12</span> <span id="13"> 13</span> <span id="14"> 14</span> <span id="15"> 15</span> <span id="16"> 16</span> <span id="17"> 17</span> <span id="18"> 18</span> 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id="289">289</span> <span id="290">290</span> <span id="291">291</span> <span id="292">292</span> <span id="293">293</span> <span id="294">294</span> <span id="295">295</span> <span id="296">296</span> </pre><pre class="rust"><code><span class="kw">use</span> <span class="ident">std::fmt</span>; <span class="kw">use</span> <span class="ident">serde</span>::{<span class="ident">Deserialize</span>, <span class="ident">Serialize</span>}; <span class="kw">use</span> <span class="ident">geom</span>::{<span class="ident">Angle</span>, <span class="ident">PolyLine</span>}; <span class="kw">use</span> <span class="ident"><span class="kw">crate</span>::raw::RestrictionType</span>; <span class="kw">use</span> <span class="kw">crate</span>::{ <span class="ident">DirectedRoadID</span>, <span class="ident">Direction</span>, <span class="ident">Intersection</span>, <span class="ident">IntersectionID</span>, <span class="ident">LaneID</span>, <span class="ident">Map</span>, <span class="ident">MovementID</span>, <span class="ident">PathConstraints</span>, }; <span class="doccomment">/// Turns are uniquely identified by their (src, dst) lanes and their parent intersection.</span> <span class="doccomment">/// Intersection is needed to distinguish crosswalks that exist at two ends of a sidewalk.</span> <span class="attribute">#[<span class="ident">derive</span>(<span class="ident">Clone</span>, <span class="ident">Copy</span>, <span class="ident">Debug</span>, <span class="ident">Eq</span>, <span class="ident">Hash</span>, <span class="ident">PartialEq</span>, <span class="ident">PartialOrd</span>, <span class="ident">Ord</span>, <span class="ident">Serialize</span>, <span class="ident">Deserialize</span>)]</span> <span class="kw">pub</span> <span class="kw">struct</span> <span class="ident">TurnID</span> { <span class="kw">pub</span> <span class="ident">parent</span>: <span class="ident">IntersectionID</span>, <span class="doccomment">/// src and dst must both belong to parent. No guarantees that src is incoming and dst is</span> <span class="doccomment">/// outgoing for turns between sidewalks.</span> <span class="kw">pub</span> <span class="ident">src</span>: <span class="ident">LaneID</span>, <span class="kw">pub</span> <span class="ident">dst</span>: <span class="ident">LaneID</span>, } <span class="kw">impl</span> <span class="ident">fmt::Display</span> <span class="kw">for</span> <span class="ident">TurnID</span> { <span class="kw">fn</span> <span class="ident">fmt</span>(<span class="kw-2">&</span><span class="self">self</span>, <span class="ident">f</span>: <span class="kw-2">&</span><span class="kw-2">mut</span> <span class="ident">fmt::Formatter</span>) -> <span class="ident">fmt::Result</span> { <span class="macro">write!</span>(<span class="ident">f</span>, <span class="string">"TurnID({}, {}, {})"</span>, <span class="self">self</span>.<span class="ident">src</span>, <span class="self">self</span>.<span class="ident">dst</span>, <span class="self">self</span>.<span class="ident">parent</span>) } } <span class="attribute">#[<span class="ident">derive</span>(<span class="ident">Clone</span>, <span class="ident">Copy</span>, <span class="ident">Debug</span>, <span class="ident">Eq</span>, <span class="ident">PartialOrd</span>, <span class="ident">Ord</span>, <span class="ident">PartialEq</span>, <span class="ident">Serialize</span>, <span class="ident">Deserialize</span>)]</span> <span class="kw">pub</span> <span class="kw">enum</span> <span class="ident">TurnType</span> { <span class="doccomment">/// A marked zebra crossing, where pedestrians usually have priority</span> <span class="ident">Crosswalk</span>, <span class="doccomment">/// The corner where two sidewalks meet. Pedestrians can cross this without conflicting with</span> <span class="doccomment">/// any vehicle traffic</span> <span class="ident">SharedSidewalkCorner</span>, <span class="comment">// These are for vehicle turns</span> <span class="ident">Straight</span>, <span class="ident">Right</span>, <span class="ident">Left</span>, <span class="ident">UTurn</span>, <span class="doccomment">/// An unmarked crossing, where pedestrians may cross without priority over vehicles</span> <span class="comment">// TODO During the next map regeneration, sort this list to be next to crosswalk. I want to</span> <span class="comment">// avoid binary incompatibility in the meantime.</span> <span class="ident">UnmarkedCrossing</span>, } <span class="kw">impl</span> <span class="ident">TurnType</span> { <span class="doccomment">/// Is the turn a crosswalk or unmarked crossing?</span> <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">pedestrian_crossing</span>(<span class="self">self</span>) -> <span class="ident">bool</span> { <span class="self">self</span> <span class="op">==</span> <span class="ident">TurnType::Crosswalk</span> <span class="op">|</span><span class="op">|</span> <span class="self">self</span> <span class="op">==</span> <span class="ident">TurnType::UnmarkedCrossing</span> } } <span class="comment">// TODO This concept may be dated, now that Movements exist. Within a movement, the lane-changing</span> <span class="comment">// turns should be treated as less important.</span> <span class="attribute">#[<span class="ident">derive</span>(<span class="ident">Serialize</span>, <span class="ident">Deserialize</span>, <span class="ident">Debug</span>, <span class="ident">PartialEq</span>, <span class="ident">Clone</span>, <span class="ident">Copy</span>, <span class="ident">PartialOrd</span>)]</span> <span class="kw">pub</span> <span class="kw">enum</span> <span class="ident">TurnPriority</span> { <span class="doccomment">/// For stop signs: Can't currently specify this!</span> <span class="doccomment">/// For traffic signals: Can't do this turn right now.</span> <span class="ident">Banned</span>, <span class="doccomment">/// For stop signs: cars have to stop before doing this turn, and are accepted with the lowest</span> <span class="doccomment">/// priority.</span> <span class="doccomment">/// For traffic signals: Cars can do this immediately if there are no previously accepted</span> <span class="doccomment">/// conflicting turns.</span> <span class="ident">Yield</span>, <span class="doccomment">/// For stop signs: cars can do this without stopping. These can conflict!</span> <span class="doccomment">/// For traffic signals: Must be non-conflicting.</span> <span class="ident">Protected</span>, } <span class="doccomment">/// A Turn leads from the end of one Lane to the start of another. (Except for pedestrians;</span> <span class="doccomment">/// sidewalks are bidirectional.)</span> <span class="attribute">#[<span class="ident">derive</span>(<span class="ident">Serialize</span>, <span class="ident">Deserialize</span>, <span class="ident">Debug</span>, <span class="ident">Clone</span>, <span class="ident">PartialEq</span>)]</span> <span class="kw">pub</span> <span class="kw">struct</span> <span class="ident">Turn</span> { <span class="kw">pub</span> <span class="ident">id</span>: <span class="ident">TurnID</span>, <span class="kw">pub</span> <span class="ident">turn_type</span>: <span class="ident">TurnType</span>, <span class="comment">// TODO Some turns might not actually have geometry. Currently encoded by two equal points.</span> <span class="comment">// Represent more directly?</span> <span class="kw">pub</span> <span class="ident">geom</span>: <span class="ident">PolyLine</span>, } <span class="kw">impl</span> <span class="ident">Turn</span> { <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">conflicts_with</span>(<span class="kw-2">&</span><span class="self">self</span>, <span class="ident">other</span>: <span class="kw-2">&</span><span class="ident">Turn</span>) -> <span class="ident">bool</span> { <span class="kw">if</span> <span class="self">self</span>.<span class="ident">turn_type</span> <span class="op">==</span> <span class="ident">TurnType::SharedSidewalkCorner</span> <span class="op">|</span><span class="op">|</span> <span class="ident">other</span>.<span class="ident">turn_type</span> <span class="op">==</span> <span class="ident">TurnType::SharedSidewalkCorner</span> { <span class="kw">return</span> <span class="bool-val">false</span>; } <span class="kw">if</span> <span class="self">self</span>.<span class="ident">id</span> <span class="op">==</span> <span class="ident">other</span>.<span class="ident">id</span> { <span class="kw">return</span> <span class="bool-val">false</span>; } <span class="kw">if</span> <span class="self">self</span>.<span class="ident">between_sidewalks</span>() <span class="op">&&</span> <span class="ident">other</span>.<span class="ident">between_sidewalks</span>() { <span class="kw">return</span> <span class="bool-val">false</span>; } <span class="kw">if</span> <span class="self">self</span>.<span class="ident">geom</span>.<span class="ident">first_pt</span>() <span class="op">==</span> <span class="ident">other</span>.<span class="ident">geom</span>.<span class="ident">first_pt</span>() { <span class="kw">return</span> <span class="bool-val">false</span>; } <span class="kw">if</span> <span class="self">self</span>.<span class="ident">geom</span>.<span class="ident">last_pt</span>() <span class="op">==</span> <span class="ident">other</span>.<span class="ident">geom</span>.<span class="ident">last_pt</span>() { <span class="kw">return</span> <span class="bool-val">true</span>; } <span class="self">self</span>.<span class="ident">geom</span>.<span class="ident">intersection</span>(<span class="kw-2">&</span><span class="ident">other</span>.<span class="ident">geom</span>).<span class="ident">is_some</span>() } <span class="comment">// The relative angle of the turn, should be the angle from the src lane to the dst lane, but</span> <span class="comment">// instead uses the first and last lines of the turn geometry, which is currently not quite the</span> <span class="comment">// same angle as between the source and destination lanes</span> <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">angle</span>(<span class="kw-2">&</span><span class="self">self</span>) -> <span class="ident">Angle</span> { <span class="kw">if</span> <span class="self">self</span>.<span class="ident">geom</span>.<span class="ident">points</span>().<span class="ident">len</span>() <span class="op"><</span> <span class="number">3</span> { <span class="kw">return</span> <span class="ident">Angle::ZERO</span>; } <span class="self">self</span>.<span class="ident">geom</span> .<span class="ident">last_line</span>() .<span class="ident">angle</span>() .<span class="ident">shortest_rotation_towards</span>(<span class="self">self</span>.<span class="ident">geom</span>.<span class="ident">first_line</span>().<span class="ident">angle</span>()) } <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">between_sidewalks</span>(<span class="kw-2">&</span><span class="self">self</span>) -> <span class="ident">bool</span> { <span class="self">self</span>.<span class="ident">turn_type</span> <span class="op">==</span> <span class="ident">TurnType::SharedSidewalkCorner</span> <span class="op">|</span><span class="op">|</span> <span class="self">self</span>.<span class="ident">turn_type</span> <span class="op">==</span> <span class="ident">TurnType::Crosswalk</span> <span class="op">|</span><span class="op">|</span> <span class="self">self</span>.<span class="ident">turn_type</span> <span class="op">==</span> <span class="ident">TurnType::UnmarkedCrossing</span> } <span class="comment">// TODO Maybe precompute this.</span> <span class="doccomment">/// Penalties for (lane types, lane-changing, slow lane). The penalty may depend on the vehicle</span> <span class="doccomment">/// performing the turn. Lower means preferable.</span> <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">penalty</span>(<span class="kw-2">&</span><span class="self">self</span>, <span class="ident">constraints</span>: <span class="ident">PathConstraints</span>, <span class="ident">map</span>: <span class="kw-2">&</span><span class="ident">Map</span>) -> (<span class="ident">usize</span>, <span class="ident">usize</span>, <span class="ident">usize</span>) { <span class="kw">let</span> <span class="ident">from</span> <span class="op">=</span> <span class="ident">map</span>.<span class="ident">get_l</span>(<span class="self">self</span>.<span class="ident">id</span>.<span class="ident">src</span>); <span class="kw">let</span> <span class="ident">to</span> <span class="op">=</span> <span class="ident">map</span>.<span class="ident">get_l</span>(<span class="self">self</span>.<span class="ident">id</span>.<span class="ident">dst</span>); <span class="comment">// Starting from the farthest from the center line (right in the US), where is this travel</span> <span class="comment">// lane? Filters by the lane type and ignores lanes that don't go to the target road.</span> <span class="kw">let</span> <span class="ident">from_idx</span> <span class="op">=</span> { <span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">cnt</span> <span class="op">=</span> <span class="number">0</span>; <span class="kw">let</span> <span class="ident">r</span> <span class="op">=</span> <span class="ident">map</span>.<span class="ident">get_r</span>(<span class="ident">from</span>.<span class="ident">id</span>.<span class="ident">road</span>); <span class="kw">for</span> (<span class="ident">l</span>, <span class="ident">lt</span>) <span class="kw">in</span> <span class="ident">r</span>.<span class="ident">children</span>(<span class="ident">from</span>.<span class="ident">dir</span>).<span class="ident">iter</span>().<span class="ident">rev</span>() { <span class="kw">if</span> <span class="ident">from</span>.<span class="ident">lane_type</span> <span class="op">!</span><span class="op">=</span> <span class="kw-2">*</span><span class="ident">lt</span> { <span class="kw">continue</span>; } <span class="kw">if</span> <span class="ident">map</span> .<span class="ident">get_turns_from_lane</span>(<span class="kw-2">*</span><span class="ident">l</span>) .<span class="ident">into_iter</span>() .<span class="ident">any</span>(<span class="op">|</span><span class="ident">t</span><span class="op">|</span> <span class="ident">t</span>.<span class="ident">id</span>.<span class="ident">dst</span>.<span class="ident">road</span> <span class="op">==</span> <span class="ident">to</span>.<span class="ident">id</span>.<span class="ident">road</span>) { <span class="ident">cnt</span> <span class="op">+</span><span class="op">=</span> <span class="number">1</span>; <span class="kw">if</span> <span class="ident">from</span>.<span class="ident">id</span> <span class="op">==</span> <span class="kw-2">*</span><span class="ident">l</span> { <span class="kw">break</span>; } } } <span class="ident">cnt</span> }; <span class="comment">// Starting from the farthest from the center line (right in the US), where is this travel</span> <span class="comment">// lane? Filters by the lane type.</span> <span class="kw">let</span> <span class="ident">to_idx</span> <span class="op">=</span> { <span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">cnt</span> <span class="op">=</span> <span class="number">0</span>; <span class="kw">let</span> <span class="ident">r</span> <span class="op">=</span> <span class="ident">map</span>.<span class="ident">get_r</span>(<span class="ident">to</span>.<span class="ident">id</span>.<span class="ident">road</span>); <span class="kw">for</span> (<span class="ident">l</span>, <span class="ident">lt</span>) <span class="kw">in</span> <span class="ident">r</span>.<span class="ident">children</span>(<span class="ident">to</span>.<span class="ident">dir</span>).<span class="ident">iter</span>().<span class="ident">rev</span>() { <span class="kw">if</span> <span class="ident">to</span>.<span class="ident">lane_type</span> <span class="op">!</span><span class="op">=</span> <span class="kw-2">*</span><span class="ident">lt</span> { <span class="kw">continue</span>; } <span class="ident">cnt</span> <span class="op">+</span><span class="op">=</span> <span class="number">1</span>; <span class="kw">if</span> <span class="ident">to</span>.<span class="ident">id</span> <span class="op">==</span> <span class="kw-2">*</span><span class="ident">l</span> { <span class="kw">break</span>; } } <span class="ident">cnt</span> }; <span class="comment">// TODO I thought about different cases where there are the same/more/less lanes going in</span> <span class="comment">// and out, but then actually, I think the reasonable thing in all cases is just to do</span> <span class="comment">// this.</span> <span class="kw">let</span> <span class="ident">lc_cost</span> <span class="op">=</span> ((<span class="ident">from_idx</span> <span class="kw">as</span> <span class="ident">isize</span>) <span class="op">-</span> (<span class="ident">to_idx</span> <span class="kw">as</span> <span class="ident">isize</span>)).<span class="ident">abs</span>() <span class="kw">as</span> <span class="ident">usize</span>; <span class="comment">// If we're a bike, prefer bike lanes, then bus lanes. If we're a bus, prefer bus lanes.</span> <span class="comment">// Otherwise, avoid special lanes, even if we're allowed to use them sometimes because they</span> <span class="comment">// happen to double as turn lanes.</span> <span class="kw">let</span> <span class="ident">lt_cost</span> <span class="op">=</span> <span class="kw">if</span> <span class="ident">constraints</span> <span class="op">==</span> <span class="ident">PathConstraints::Bike</span> { <span class="kw">if</span> <span class="ident">to</span>.<span class="ident">is_biking</span>() { <span class="number">0</span> } <span class="kw">else</span> <span class="kw">if</span> <span class="ident">to</span>.<span class="ident">is_bus</span>() { <span class="number">1</span> } <span class="kw">else</span> { <span class="number">2</span> } } <span class="kw">else</span> <span class="kw">if</span> <span class="ident">constraints</span> <span class="op">==</span> <span class="ident">PathConstraints::Bus</span> { <span class="kw">if</span> <span class="ident">to</span>.<span class="ident">is_bus</span>() { <span class="number">0</span> } <span class="kw">else</span> { <span class="number">1</span> } } <span class="kw">else</span> <span class="kw">if</span> <span class="ident">to</span>.<span class="ident">is_bus</span>() { <span class="comment">// Cars should stay out of bus lanes unless it's required to make a turn</span> <span class="number">3</span> } <span class="kw">else</span> { <span class="number">0</span> }; <span class="comment">// Keep right (in the US)</span> <span class="kw">let</span> <span class="ident">slow_lane</span> <span class="op">=</span> <span class="kw">if</span> <span class="ident">to_idx</span> <span class="op">></span> <span class="number">1</span> { <span class="number">1</span> } <span class="kw">else</span> { <span class="number">0</span> }; (<span class="ident">lt_cost</span>, <span class="ident">lc_cost</span>, <span class="ident">slow_lane</span>) } <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">is_crossing_arterial_intersection</span>(<span class="kw-2">&</span><span class="self">self</span>, <span class="ident">map</span>: <span class="kw-2">&</span><span class="ident">Map</span>) -> <span class="ident">bool</span> { <span class="kw">use</span> <span class="ident"><span class="kw">crate</span>::osm::RoadRank</span>; <span class="kw">if</span> <span class="op">!</span><span class="self">self</span>.<span class="ident">turn_type</span>.<span class="ident">pedestrian_crossing</span>() { <span class="kw">return</span> <span class="bool-val">false</span>; } <span class="comment">// Distance-only metric has many false positives and negatives</span> <span class="comment">// return turn.geom.length() > Distance::feet(41.0);</span> <span class="kw">let</span> <span class="ident">intersection</span> <span class="op">=</span> <span class="ident">map</span>.<span class="ident">get_i</span>(<span class="self">self</span>.<span class="ident">id</span>.<span class="ident">parent</span>); <span class="ident">intersection</span>.<span class="ident">roads</span>.<span class="ident">iter</span>().<span class="ident">any</span>(<span class="op">|</span><span class="ident">r</span><span class="op">|</span> { <span class="kw">let</span> <span class="ident">rank</span> <span class="op">=</span> <span class="ident">map</span>.<span class="ident">get_r</span>(<span class="kw-2">*</span><span class="ident">r</span>).<span class="ident">get_rank</span>(); <span class="ident">rank</span> <span class="op">==</span> <span class="ident">RoadRank::Arterial</span> <span class="op">|</span><span class="op">|</span> <span class="ident">rank</span> <span class="op">==</span> <span class="ident">RoadRank::Highway</span> }) } <span class="doccomment">/// Is this turn legal, according to turn lane tagging?</span> <span class="kw">pub</span>(<span class="kw">crate</span>) <span class="kw">fn</span> <span class="ident">permitted_by_lane</span>(<span class="kw-2">&</span><span class="self">self</span>, <span class="ident">map</span>: <span class="kw-2">&</span><span class="ident">Map</span>) -> <span class="ident">bool</span> { <span class="kw">if</span> <span class="kw">let</span> <span class="prelude-val">Some</span>(<span class="ident">types</span>) <span class="op">=</span> <span class="ident">map</span> .<span class="ident">get_l</span>(<span class="self">self</span>.<span class="ident">id</span>.<span class="ident">src</span>) .<span class="ident">get_lane_level_turn_restrictions</span>(<span class="ident">map</span>.<span class="ident">get_parent</span>(<span class="self">self</span>.<span class="ident">id</span>.<span class="ident">src</span>), <span class="bool-val">false</span>) { <span class="ident">types</span>.<span class="ident">contains</span>(<span class="kw-2">&</span><span class="self">self</span>.<span class="ident">turn_type</span>) } <span class="kw">else</span> { <span class="bool-val">true</span> } } <span class="doccomment">/// Is this turn legal, according to turn restrictions defined between road segments?</span> <span class="kw">pub</span>(<span class="kw">crate</span>) <span class="kw">fn</span> <span class="ident">permitted_by_road</span>(<span class="kw-2">&</span><span class="self">self</span>, <span class="ident">i</span>: <span class="kw-2">&</span><span class="ident">Intersection</span>, <span class="ident">map</span>: <span class="kw-2">&</span><span class="ident">Map</span>) -> <span class="ident">bool</span> { <span class="kw">if</span> <span class="self">self</span>.<span class="ident">between_sidewalks</span>() { <span class="kw">return</span> <span class="bool-val">true</span>; } <span class="kw">let</span> <span class="ident">src</span> <span class="op">=</span> <span class="ident">map</span>.<span class="ident">get_parent</span>(<span class="self">self</span>.<span class="ident">id</span>.<span class="ident">src</span>); <span class="kw">let</span> <span class="ident">dst</span> <span class="op">=</span> <span class="self">self</span>.<span class="ident">id</span>.<span class="ident">dst</span>.<span class="ident">road</span>; <span class="kw">for</span> (<span class="ident">restriction</span>, <span class="ident">to</span>) <span class="kw">in</span> <span class="kw-2">&</span><span class="ident">src</span>.<span class="ident">turn_restrictions</span> { <span class="comment">// The restriction only applies to one direction of the road.</span> <span class="kw">if</span> <span class="op">!</span><span class="ident">i</span>.<span class="ident">roads</span>.<span class="ident">contains</span>(<span class="ident">to</span>) { <span class="kw">continue</span>; } <span class="kw">match</span> <span class="ident">restriction</span> { <span class="ident">RestrictionType::BanTurns</span> => { <span class="kw">if</span> <span class="ident">dst</span> <span class="op">==</span> <span class="kw-2">*</span><span class="ident">to</span> { <span class="kw">return</span> <span class="bool-val">false</span>; } } <span class="ident">RestrictionType::OnlyAllowTurns</span> => { <span class="kw">if</span> <span class="ident">dst</span> <span class="op">!</span><span class="op">=</span> <span class="kw-2">*</span><span class="ident">to</span> { <span class="kw">return</span> <span class="bool-val">false</span>; } } } } <span class="bool-val">true</span> } <span class="doccomment">/// If this turn is a crosswalk over a single road, return that road and which end of the road</span> <span class="doccomment">/// is crossed.</span> <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">crosswalk_over_road</span>(<span class="kw-2">&</span><span class="self">self</span>, <span class="ident">map</span>: <span class="kw-2">&</span><span class="ident">Map</span>) -> <span class="prelude-ty">Option</span><span class="op"><</span><span class="ident">DirectedRoadID</span><span class="op">></span> { <span class="kw">if</span> <span class="op">!</span><span class="self">self</span>.<span class="ident">turn_type</span>.<span class="ident">pedestrian_crossing</span>() { <span class="kw">return</span> <span class="prelude-val">None</span>; } <span class="comment">// We cross multiple roads</span> <span class="kw">if</span> <span class="self">self</span>.<span class="ident">id</span>.<span class="ident">src</span>.<span class="ident">road</span> <span class="op">!</span><span class="op">=</span> <span class="self">self</span>.<span class="ident">id</span>.<span class="ident">dst</span>.<span class="ident">road</span> { <span class="kw">return</span> <span class="prelude-val">None</span>; } <span class="prelude-val">Some</span>(<span class="ident">DirectedRoadID</span> { <span class="ident">road</span>: <span class="self">self</span>.<span class="ident">id</span>.<span class="ident">src</span>.<span class="ident">road</span>, <span class="ident">dir</span>: <span class="kw">if</span> <span class="ident">map</span>.<span class="ident">get_r</span>(<span class="self">self</span>.<span class="ident">id</span>.<span class="ident">src</span>.<span class="ident">road</span>).<span class="ident">dst_i</span> <span class="op">==</span> <span class="self">self</span>.<span class="ident">id</span>.<span class="ident">parent</span> { <span class="ident">Direction::Fwd</span> } <span class="kw">else</span> { <span class="ident">Direction::Back</span> }, }) } } <span class="kw">impl</span> <span class="ident">TurnID</span> { <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">to_movement</span>(<span class="self">self</span>, <span class="ident">map</span>: <span class="kw-2">&</span><span class="ident">Map</span>) -> <span class="ident">MovementID</span> { <span class="ident">MovementID</span> { <span class="ident">from</span>: <span class="ident">map</span>.<span class="ident">get_l</span>(<span class="self">self</span>.<span class="ident">src</span>).<span class="ident">get_directed_parent</span>(), <span class="ident">to</span>: <span class="ident">map</span>.<span class="ident">get_l</span>(<span class="self">self</span>.<span class="ident">dst</span>).<span class="ident">get_directed_parent</span>(), <span class="ident">parent</span>: <span class="self">self</span>.<span class="ident">parent</span>, <span class="ident">crosswalk</span>: <span class="ident">map</span>.<span class="ident">get_l</span>(<span class="self">self</span>.<span class="ident">src</span>).<span class="ident">is_walkable</span>(), } } } </code></pre></div> </section><section id="search" class="content hidden"></section><div id="rustdoc-vars" data-root-path="../../../" data-current-crate="map_model" data-search-index-js="../../../search-index.js" data-search-js="../../../search.js"></div> <script src="../../../main.js"></script><script src="../../../source-script.js"></script><script src="../../../source-files.js"></script> </body></html>