<!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/lane.rs`."><meta name="keywords" content="rust, rustlang, rust-lang"><title>lane.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><script defer src="../../../main.js"></script><script defer src="../../../source-script.js"></script><script defer 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id="587">587</span> <span id="588">588</span> <span id="589">589</span> <span id="590">590</span> <span id="591">591</span> <span id="592">592</span> <span id="593">593</span> <span id="594">594</span> <span id="595">595</span> <span id="596">596</span> <span id="597">597</span> <span id="598">598</span> </pre><pre class="rust"><code><span class="kw">use</span> <span class="ident">std::collections::BTreeSet</span>; <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">Deserializer</span>, <span class="ident">Serialize</span>, <span class="ident">Serializer</span>}; <span class="kw">use</span> <span class="ident">abstutil::Tags</span>; <span class="kw">use</span> <span class="ident">geom</span>::{<span class="ident">Distance</span>, <span class="ident">Line</span>, <span class="ident">PolyLine</span>, <span class="ident">Polygon</span>, <span class="ident">Pt2D</span>}; <span class="kw">use</span> <span class="kw">crate</span>::{ <span class="ident">osm</span>, <span class="ident">DirectedRoadID</span>, <span class="ident">Direction</span>, <span class="ident">DrivingSide</span>, <span class="ident">IntersectionID</span>, <span class="ident">Map</span>, <span class="ident">MapConfig</span>, <span class="ident">Road</span>, <span class="ident">RoadID</span>, <span class="ident">RoadSideID</span>, <span class="ident">SideOfRoad</span>, <span class="ident">TransitStopID</span>, <span class="ident">TurnType</span>, }; <span class="doccomment">/// From some manually audited cases in Seattle, the length of parallel street parking spots is a</span> <span class="doccomment">/// bit different than the length in parking lots, so set a different value here.</span> <span class="kw">pub</span> <span class="kw">const</span> <span class="ident">PARKING_LOT_SPOT_LENGTH</span>: <span class="ident">Distance</span> <span class="op">=</span> <span class="ident">Distance::const_meters</span>(<span class="number">6.4</span>); <span class="kw">pub</span> <span class="kw">const</span> <span class="ident">NORMAL_LANE_THICKNESS</span>: <span class="ident">Distance</span> <span class="op">=</span> <span class="ident">Distance::const_meters</span>(<span class="number">2.5</span>); <span class="kw">const</span> <span class="ident">SERVICE_ROAD_LANE_THICKNESS</span>: <span class="ident">Distance</span> <span class="op">=</span> <span class="ident">Distance::const_meters</span>(<span class="number">1.5</span>); <span class="kw">pub</span> <span class="kw">const</span> <span class="ident">SIDEWALK_THICKNESS</span>: <span class="ident">Distance</span> <span class="op">=</span> <span class="ident">Distance::const_meters</span>(<span class="number">1.5</span>); <span class="kw">const</span> <span class="ident">SHOULDER_THICKNESS</span>: <span class="ident">Distance</span> <span class="op">=</span> <span class="ident">Distance::const_meters</span>(<span class="number">0.5</span>); <span class="doccomment">/// A lane is identified by its parent road and its position, ordered from the left.</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> <span class="kw">pub</span> <span class="kw">struct</span> <span class="ident">LaneID</span> { <span class="kw">pub</span> <span class="ident">road</span>: <span class="ident">RoadID</span>, <span class="kw">pub</span> <span class="ident">offset</span>: <span class="ident">usize</span>, } <span class="kw">impl</span> <span class="ident">fmt::Display</span> <span class="kw">for</span> <span class="ident">LaneID</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">&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">"Lane #{}"</span>, <span class="self">self</span>.<span class="ident">encode_u32</span>()) } } <span class="kw">impl</span> <span class="ident">LaneID</span> { <span class="comment">// TODO Do we have an endianness problem, or does serde take care of us?</span> <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">encode_u32</span>(<span class="self">self</span>) -> <span class="ident">u32</span> { <span class="comment">// The first 27 bits encode the RoadID, the last 5 the offset.</span> <span class="comment">//</span> <span class="comment">// (In some Houston area dystopia, we might want 2^5 = 32 lanes on one road. That leaves 27</span> <span class="comment">// bits for roads -- 134 million roads should be plenty.)</span> <span class="kw">let</span> <span class="ident">road</span> <span class="op">=</span> <span class="self">self</span>.<span class="ident">road</span>.<span class="number">0</span> <span class="op"><</span><span class="op"><</span> <span class="number">5</span>; (<span class="ident">road</span> <span class="op">|</span> <span class="self">self</span>.<span class="ident">offset</span>) <span class="kw">as</span> <span class="ident">u32</span> } <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">decode_u32</span>(<span class="ident">x</span>: <span class="ident">u32</span>) -> <span class="ident">LaneID</span> { <span class="kw">let</span> <span class="ident">road</span> <span class="op">=</span> <span class="ident">RoadID</span>((<span class="ident">x</span> <span class="op">></span><span class="op">></span> <span class="number">5</span>) <span class="kw">as</span> <span class="ident">usize</span>); <span class="comment">// My bit twiddling is weak. Easier way to get a binary mask starting with 11111?</span> <span class="kw">let</span> <span class="ident">offset</span> <span class="op">=</span> (<span class="ident">x</span> <span class="op">&</span> (<span class="number">1</span> <span class="op">+</span> <span class="number">2</span> <span class="op">+</span> <span class="number">4</span> <span class="op">+</span> <span class="number">8</span> <span class="op">+</span> <span class="number">16</span>)) <span class="kw">as</span> <span class="ident">usize</span>; <span class="ident">LaneID</span> { <span class="ident">road</span>, <span class="ident">offset</span> } } <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">dummy</span>() -> <span class="ident">LaneID</span> { <span class="ident">LaneID</span> { <span class="ident">road</span>: <span class="ident">RoadID</span>(<span class="number">0</span>), <span class="ident">offset</span>: <span class="number">0</span>, } } } <span class="kw">impl</span> <span class="ident">Serialize</span> <span class="kw">for</span> <span class="ident">LaneID</span> { <span class="kw">fn</span> <span class="ident">serialize</span><span class="op"><</span><span class="ident">S</span><span class="op">></span>(<span class="kw-2">&</span><span class="self">self</span>, <span class="ident">s</span>: <span class="ident">S</span>) -> <span class="prelude-ty">Result</span><span class="op"><</span><span class="ident">S::Ok</span>, <span class="ident">S::Error</span><span class="op">></span> <span class="kw">where</span> <span class="ident">S</span>: <span class="ident">Serializer</span>, { <span class="self">self</span>.<span class="ident">encode_u32</span>().<span class="ident">serialize</span>(<span class="ident">s</span>) } } <span class="kw">impl</span><span class="op"><</span><span class="lifetime">'de</span><span class="op">></span> <span class="ident">Deserialize</span><span class="op"><</span><span class="lifetime">'de</span><span class="op">></span> <span class="kw">for</span> <span class="ident">LaneID</span> { <span class="kw">fn</span> <span class="ident">deserialize</span><span class="op"><</span><span class="ident">D</span><span class="op">></span>(<span class="ident">d</span>: <span class="ident">D</span>) -> <span class="prelude-ty">Result</span><span class="op"><</span><span class="ident">LaneID</span>, <span class="ident">D::Error</span><span class="op">></span> <span class="kw">where</span> <span class="ident">D</span>: <span class="ident">Deserializer</span><span class="op"><</span><span class="lifetime">'de</span><span class="op">></span>, { <span class="kw">let</span> <span class="ident">x</span> <span class="op">=</span> <span class="op"><</span><span class="ident">u32</span><span class="op">></span><span class="ident">::deserialize</span>(<span class="ident">d</span>)<span class="question-mark">?</span>; <span class="prelude-val">Ok</span>(<span class="ident">LaneID::decode_u32</span>(<span class="ident">x</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">enum</span> <span class="ident">LaneType</span> { <span class="ident">Driving</span>, <span class="ident">Parking</span>, <span class="ident">Sidewalk</span>, <span class="comment">// Walkable like a Sidewalk, but very narrow. Used to model pedestrians walking on roads</span> <span class="comment">// without sidewalks.</span> <span class="ident">Shoulder</span>, <span class="ident">Biking</span>, <span class="ident">Bus</span>, <span class="ident">SharedLeftTurn</span>, <span class="ident">Construction</span>, <span class="ident">LightRail</span>, <span class="ident">Buffer</span>(<span class="ident">BufferType</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">enum</span> <span class="ident">BufferType</span> { <span class="doccomment">/// Just paint!</span> <span class="ident">Stripes</span>, <span class="doccomment">/// Flex posts, wands, cones, other "weak" forms of protection. Can weave through them.</span> <span class="ident">FlexPosts</span>, <span class="doccomment">/// Sturdier planters, with gaps.</span> <span class="ident">Planters</span>, <span class="doccomment">/// Solid barrier, no gaps.</span> <span class="ident">JerseyBarrier</span>, <span class="doccomment">/// A raised curb</span> <span class="ident">Curb</span>, } <span class="kw">impl</span> <span class="ident">LaneType</span> { <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">is_for_moving_vehicles</span>(<span class="self">self</span>) -> <span class="ident">bool</span> { <span class="kw">match</span> <span class="self">self</span> { <span class="ident">LaneType::Driving</span> => <span class="bool-val">true</span>, <span class="ident">LaneType::Biking</span> => <span class="bool-val">true</span>, <span class="ident">LaneType::Bus</span> => <span class="bool-val">true</span>, <span class="ident">LaneType::Parking</span> => <span class="bool-val">false</span>, <span class="ident">LaneType::Sidewalk</span> => <span class="bool-val">false</span>, <span class="ident">LaneType::Shoulder</span> => <span class="bool-val">false</span>, <span class="ident">LaneType::SharedLeftTurn</span> => <span class="bool-val">false</span>, <span class="ident">LaneType::Construction</span> => <span class="bool-val">false</span>, <span class="ident">LaneType::LightRail</span> => <span class="bool-val">true</span>, <span class="ident">LaneType::Buffer</span>(<span class="kw">_</span>) => <span class="bool-val">false</span>, } } <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">supports_any_movement</span>(<span class="self">self</span>) -> <span class="ident">bool</span> { <span class="kw">match</span> <span class="self">self</span> { <span class="ident">LaneType::Driving</span> => <span class="bool-val">true</span>, <span class="ident">LaneType::Biking</span> => <span class="bool-val">true</span>, <span class="ident">LaneType::Bus</span> => <span class="bool-val">true</span>, <span class="ident">LaneType::Parking</span> => <span class="bool-val">false</span>, <span class="ident">LaneType::Sidewalk</span> => <span class="bool-val">true</span>, <span class="ident">LaneType::Shoulder</span> => <span class="bool-val">true</span>, <span class="ident">LaneType::SharedLeftTurn</span> => <span class="bool-val">false</span>, <span class="ident">LaneType::Construction</span> => <span class="bool-val">false</span>, <span class="ident">LaneType::LightRail</span> => <span class="bool-val">true</span>, <span class="ident">LaneType::Buffer</span>(<span class="kw">_</span>) => <span class="bool-val">false</span>, } } <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">is_walkable</span>(<span class="self">self</span>) -> <span class="ident">bool</span> { <span class="self">self</span> <span class="op">==</span> <span class="ident">LaneType::Sidewalk</span> <span class="op">|</span><span class="op">|</span> <span class="self">self</span> <span class="op">==</span> <span class="ident">LaneType::Shoulder</span> } <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">describe</span>(<span class="self">self</span>) -> <span class="kw-2">&</span><span class="lifetime">'static</span> <span class="ident">str</span> { <span class="kw">match</span> <span class="self">self</span> { <span class="ident">LaneType::Driving</span> => <span class="string">"a general-purpose driving lane"</span>, <span class="ident">LaneType::Biking</span> => <span class="string">"a protected bike lane"</span>, <span class="ident">LaneType::Bus</span> => <span class="string">"a bus-only lane"</span>, <span class="ident">LaneType::Parking</span> => <span class="string">"an on-street parking lane"</span>, <span class="ident">LaneType::Sidewalk</span> => <span class="string">"a sidewalk"</span>, <span class="ident">LaneType::Shoulder</span> => <span class="string">"a shoulder"</span>, <span class="ident">LaneType::SharedLeftTurn</span> => <span class="string">"a shared left-turn lane"</span>, <span class="ident">LaneType::Construction</span> => <span class="string">"a lane that's closed for construction"</span>, <span class="ident">LaneType::LightRail</span> => <span class="string">"a light rail track"</span>, <span class="ident">LaneType::Buffer</span>(<span class="ident">BufferType::Stripes</span>) => <span class="string">"striped pavement"</span>, <span class="ident">LaneType::Buffer</span>(<span class="ident">BufferType::FlexPosts</span>) => <span class="string">"flex post barriers"</span>, <span class="ident">LaneType::Buffer</span>(<span class="ident">BufferType::Planters</span>) => <span class="string">"planter barriers"</span>, <span class="ident">LaneType::Buffer</span>(<span class="ident">BufferType::JerseyBarrier</span>) => <span class="string">"a Jersey barrier"</span>, <span class="ident">LaneType::Buffer</span>(<span class="ident">BufferType::Curb</span>) => <span class="string">"a raised curb"</span>, } } <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">short_name</span>(<span class="self">self</span>) -> <span class="kw-2">&</span><span class="lifetime">'static</span> <span class="ident">str</span> { <span class="kw">match</span> <span class="self">self</span> { <span class="ident">LaneType::Driving</span> => <span class="string">"driving lane"</span>, <span class="ident">LaneType::Biking</span> => <span class="string">"bike lane"</span>, <span class="ident">LaneType::Bus</span> => <span class="string">"bus lane"</span>, <span class="ident">LaneType::Parking</span> => <span class="string">"parking lane"</span>, <span class="ident">LaneType::Sidewalk</span> => <span class="string">"sidewalk"</span>, <span class="ident">LaneType::Shoulder</span> => <span class="string">"shoulder"</span>, <span class="ident">LaneType::SharedLeftTurn</span> => <span class="string">"left-turn lane"</span>, <span class="ident">LaneType::Construction</span> => <span class="string">"construction"</span>, <span class="ident">LaneType::LightRail</span> => <span class="string">"light rail track"</span>, <span class="ident">LaneType::Buffer</span>(<span class="ident">BufferType::Stripes</span>) => <span class="string">"stripes"</span>, <span class="ident">LaneType::Buffer</span>(<span class="ident">BufferType::FlexPosts</span>) => <span class="string">"flex posts"</span>, <span class="ident">LaneType::Buffer</span>(<span class="ident">BufferType::Planters</span>) => <span class="string">"planters"</span>, <span class="ident">LaneType::Buffer</span>(<span class="ident">BufferType::JerseyBarrier</span>) => <span class="string">"Jersey barrier"</span>, <span class="ident">LaneType::Buffer</span>(<span class="ident">BufferType::Curb</span>) => <span class="string">"curb"</span>, } } <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">from_short_name</span>(<span class="ident">x</span>: <span class="kw-2">&</span><span class="ident">str</span>) -> <span class="prelude-ty">Option</span><span class="op"><</span><span class="ident">LaneType</span><span class="op">></span> { <span class="kw">match</span> <span class="ident">x</span> { <span class="string">"driving lane"</span> => <span class="prelude-val">Some</span>(<span class="ident">LaneType::Driving</span>), <span class="string">"bike lane"</span> => <span class="prelude-val">Some</span>(<span class="ident">LaneType::Biking</span>), <span class="string">"bus lane"</span> => <span class="prelude-val">Some</span>(<span class="ident">LaneType::Bus</span>), <span class="string">"parking lane"</span> => <span class="prelude-val">Some</span>(<span class="ident">LaneType::Parking</span>), <span class="string">"sidewalk"</span> => <span class="prelude-val">Some</span>(<span class="ident">LaneType::Sidewalk</span>), <span class="string">"shoulder"</span> => <span class="prelude-val">Some</span>(<span class="ident">LaneType::Shoulder</span>), <span class="string">"left-turn lane"</span> => <span class="prelude-val">Some</span>(<span class="ident">LaneType::SharedLeftTurn</span>), <span class="string">"construction"</span> => <span class="prelude-val">Some</span>(<span class="ident">LaneType::Construction</span>), <span class="string">"light rail track"</span> => <span class="prelude-val">Some</span>(<span class="ident">LaneType::LightRail</span>), <span class="string">"stripes"</span> => <span class="prelude-val">Some</span>(<span class="ident">LaneType::Buffer</span>(<span class="ident">BufferType::Stripes</span>)), <span class="string">"flex posts"</span> => <span class="prelude-val">Some</span>(<span class="ident">LaneType::Buffer</span>(<span class="ident">BufferType::FlexPosts</span>)), <span class="string">"planters"</span> => <span class="prelude-val">Some</span>(<span class="ident">LaneType::Buffer</span>(<span class="ident">BufferType::Planters</span>)), <span class="string">"Jersey barrier"</span> => <span class="prelude-val">Some</span>(<span class="ident">LaneType::Buffer</span>(<span class="ident">BufferType::JerseyBarrier</span>)), <span class="string">"curb"</span> => <span class="prelude-val">Some</span>(<span class="ident">LaneType::Buffer</span>(<span class="ident">BufferType::Curb</span>)), <span class="kw">_</span> => <span class="prelude-val">None</span>, } } <span class="doccomment">/// Represents the lane type as a single character, for use in tests.</span> <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">to_char</span>(<span class="self">self</span>) -> <span class="ident">char</span> { <span class="kw">match</span> <span class="self">self</span> { <span class="ident">LaneType::Driving</span> => <span class="string">'d'</span>, <span class="ident">LaneType::Biking</span> => <span class="string">'b'</span>, <span class="ident">LaneType::Bus</span> => <span class="string">'B'</span>, <span class="ident">LaneType::Parking</span> => <span class="string">'p'</span>, <span class="ident">LaneType::Sidewalk</span> => <span class="string">'s'</span>, <span class="ident">LaneType::Shoulder</span> => <span class="string">'S'</span>, <span class="ident">LaneType::SharedLeftTurn</span> => <span class="string">'C'</span>, <span class="ident">LaneType::Construction</span> => <span class="string">'x'</span>, <span class="ident">LaneType::LightRail</span> => <span class="string">'l'</span>, <span class="ident">LaneType::Buffer</span>(<span class="kw">_</span>) => <span class="string">'|'</span>, } } <span class="doccomment">/// The inverse of `to_char`. Always picks one buffer type. Panics on invalid input.</span> <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">from_char</span>(<span class="ident">x</span>: <span class="ident">char</span>) -> <span class="ident">LaneType</span> { <span class="kw">match</span> <span class="ident">x</span> { <span class="string">'d'</span> => <span class="ident">LaneType::Driving</span>, <span class="string">'b'</span> => <span class="ident">LaneType::Biking</span>, <span class="string">'B'</span> => <span class="ident">LaneType::Bus</span>, <span class="string">'p'</span> => <span class="ident">LaneType::Parking</span>, <span class="string">'s'</span> => <span class="ident">LaneType::Sidewalk</span>, <span class="string">'S'</span> => <span class="ident">LaneType::Shoulder</span>, <span class="string">'C'</span> => <span class="ident">LaneType::SharedLeftTurn</span>, <span class="string">'x'</span> => <span class="ident">LaneType::Construction</span>, <span class="string">'l'</span> => <span class="ident">LaneType::LightRail</span>, <span class="string">'|'</span> => <span class="ident">LaneType::Buffer</span>(<span class="ident">BufferType::FlexPosts</span>), <span class="kw">_</span> => <span class="macro">panic!</span>(<span class="string">"from_char({}) undefined"</span>, <span class="ident">x</span>), } } } <span class="doccomment">/// A road segment is broken down into individual lanes, which have a LaneType.</span> <span class="attribute">#[<span class="ident">derive</span>(<span class="ident">Serialize</span>, <span class="ident">Deserialize</span>, <span class="ident">Clone</span>, <span class="ident">Debug</span>)]</span> <span class="kw">pub</span> <span class="kw">struct</span> <span class="ident">Lane</span> { <span class="kw">pub</span> <span class="ident">id</span>: <span class="ident">LaneID</span>, <span class="kw">pub</span> <span class="ident">lane_type</span>: <span class="ident">LaneType</span>, <span class="kw">pub</span> <span class="ident">lane_center_pts</span>: <span class="ident">PolyLine</span>, <span class="kw">pub</span> <span class="ident">width</span>: <span class="ident">Distance</span>, <span class="kw">pub</span> <span class="ident">dir</span>: <span class="ident">Direction</span>, <span class="kw">pub</span> <span class="ident">src_i</span>: <span class="ident">IntersectionID</span>, <span class="kw">pub</span> <span class="ident">dst_i</span>: <span class="ident">IntersectionID</span>, <span class="doccomment">/// Meaningless order</span> <span class="kw">pub</span> <span class="ident">transit_stops</span>: <span class="ident">BTreeSet</span><span class="op"><</span><span class="ident">TransitStopID</span><span class="op">></span>, <span class="doccomment">/// {Cars, bikes} trying to start or end here might not be able to reach most lanes in the</span> <span class="doccomment">/// graph, because this is near a border.</span> <span class="kw">pub</span> <span class="ident">driving_blackhole</span>: <span class="ident">bool</span>, <span class="kw">pub</span> <span class="ident">biking_blackhole</span>: <span class="ident">bool</span>, } <span class="attribute">#[<span class="ident">derive</span>(<span class="ident">Debug</span>, <span class="ident">Clone</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">struct</span> <span class="ident">LaneSpec</span> { <span class="kw">pub</span> <span class="ident">lt</span>: <span class="ident">LaneType</span>, <span class="kw">pub</span> <span class="ident">dir</span>: <span class="ident">Direction</span>, <span class="kw">pub</span> <span class="ident">width</span>: <span class="ident">Distance</span>, } <span class="kw">impl</span> <span class="ident">Lane</span> { <span class="comment">// TODO most of these are wrappers; stop doing this?</span> <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">first_pt</span>(<span class="kw-2">&</span><span class="self">self</span>) -> <span class="ident">Pt2D</span> { <span class="self">self</span>.<span class="ident">lane_center_pts</span>.<span class="ident">first_pt</span>() } <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">last_pt</span>(<span class="kw-2">&</span><span class="self">self</span>) -> <span class="ident">Pt2D</span> { <span class="self">self</span>.<span class="ident">lane_center_pts</span>.<span class="ident">last_pt</span>() } <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">first_line</span>(<span class="kw-2">&</span><span class="self">self</span>) -> <span class="ident">Line</span> { <span class="self">self</span>.<span class="ident">lane_center_pts</span>.<span class="ident">first_line</span>() } <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">last_line</span>(<span class="kw-2">&</span><span class="self">self</span>) -> <span class="ident">Line</span> { <span class="self">self</span>.<span class="ident">lane_center_pts</span>.<span class="ident">last_line</span>() } <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">endpoint</span>(<span class="kw-2">&</span><span class="self">self</span>, <span class="ident">i</span>: <span class="ident">IntersectionID</span>) -> <span class="ident">Pt2D</span> { <span class="kw">if</span> <span class="ident">i</span> <span class="op">==</span> <span class="self">self</span>.<span class="ident">src_i</span> { <span class="self">self</span>.<span class="ident">first_pt</span>() } <span class="kw">else</span> <span class="kw">if</span> <span class="ident">i</span> <span class="op">==</span> <span class="self">self</span>.<span class="ident">dst_i</span> { <span class="self">self</span>.<span class="ident">last_pt</span>() } <span class="kw">else</span> { <span class="macro">panic!</span>(<span class="string">"{} isn't an endpoint of {}"</span>, <span class="ident">i</span>, <span class="self">self</span>.<span class="ident">id</span>); } } <span class="doccomment">/// pt2 will be endpoint</span> <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">end_line</span>(<span class="kw-2">&</span><span class="self">self</span>, <span class="ident">i</span>: <span class="ident">IntersectionID</span>) -> <span class="ident">Line</span> { <span class="kw">if</span> <span class="ident">i</span> <span class="op">==</span> <span class="self">self</span>.<span class="ident">src_i</span> { <span class="self">self</span>.<span class="ident">first_line</span>().<span class="ident">reversed</span>() } <span class="kw">else</span> <span class="kw">if</span> <span class="ident">i</span> <span class="op">==</span> <span class="self">self</span>.<span class="ident">dst_i</span> { <span class="self">self</span>.<span class="ident">last_line</span>() } <span class="kw">else</span> { <span class="macro">panic!</span>(<span class="string">"{} isn't an endpoint of {}"</span>, <span class="ident">i</span>, <span class="self">self</span>.<span class="ident">id</span>); } } <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">dist_along_of_point</span>(<span class="kw-2">&</span><span class="self">self</span>, <span class="ident">pt</span>: <span class="ident">Pt2D</span>) -> <span class="prelude-ty">Option</span><span class="op"><</span><span class="ident">Distance</span><span class="op">></span> { <span class="self">self</span>.<span class="ident">lane_center_pts</span> .<span class="ident">dist_along_of_point</span>(<span class="ident">pt</span>) .<span class="ident">map</span>(<span class="op">|</span>(<span class="ident">dist</span>, <span class="kw">_</span>)<span class="op">|</span> <span class="ident">dist</span>) } <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">length</span>(<span class="kw-2">&</span><span class="self">self</span>) -> <span class="ident">Distance</span> { <span class="self">self</span>.<span class="ident">lane_center_pts</span>.<span class="ident">length</span>() } <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">intersections</span>(<span class="kw-2">&</span><span class="self">self</span>) -> <span class="ident">Vec</span><span class="op"><</span><span class="ident">IntersectionID</span><span class="op">></span> { <span class="comment">// TODO I think we're assuming there are no loop lanes</span> <span class="macro">vec!</span>[<span class="self">self</span>.<span class="ident">src_i</span>, <span class="self">self</span>.<span class="ident">dst_i</span>] } <span class="comment">// TODO different types for each lane type might be reasonable</span> <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">number_parking_spots</span>(<span class="kw-2">&</span><span class="self">self</span>, <span class="ident">cfg</span>: <span class="kw-2">&</span><span class="ident">MapConfig</span>) -> <span class="ident">usize</span> { <span class="macro">assert_eq!</span>(<span class="self">self</span>.<span class="ident">lane_type</span>, <span class="ident">LaneType::Parking</span>); <span class="comment">// No spots next to intersections</span> <span class="kw">let</span> <span class="ident">spots</span> <span class="op">=</span> (<span class="self">self</span>.<span class="ident">length</span>() <span class="op">/</span> <span class="ident">cfg</span>.<span class="ident">street_parking_spot_length</span>).<span class="ident">floor</span>() <span class="op">-</span> <span class="number">2.0</span>; <span class="kw">if</span> <span class="ident">spots</span> <span class="op">></span><span class="op">=</span> <span class="number">1.0</span> { <span class="ident">spots</span> <span class="kw">as</span> <span class="ident">usize</span> } <span class="kw">else</span> { <span class="number">0</span> } } <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">is_driving</span>(<span class="kw-2">&</span><span class="self">self</span>) -> <span class="ident">bool</span> { <span class="self">self</span>.<span class="ident">lane_type</span> <span class="op">==</span> <span class="ident">LaneType::Driving</span> } <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">is_biking</span>(<span class="kw-2">&</span><span class="self">self</span>) -> <span class="ident">bool</span> { <span class="self">self</span>.<span class="ident">lane_type</span> <span class="op">==</span> <span class="ident">LaneType::Biking</span> } <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">is_bus</span>(<span class="kw-2">&</span><span class="self">self</span>) -> <span class="ident">bool</span> { <span class="self">self</span>.<span class="ident">lane_type</span> <span class="op">==</span> <span class="ident">LaneType::Bus</span> } <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">is_walkable</span>(<span class="kw-2">&</span><span class="self">self</span>) -> <span class="ident">bool</span> { <span class="self">self</span>.<span class="ident">lane_type</span>.<span class="ident">is_walkable</span>() } <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">is_sidewalk</span>(<span class="kw-2">&</span><span class="self">self</span>) -> <span class="ident">bool</span> { <span class="self">self</span>.<span class="ident">lane_type</span> <span class="op">==</span> <span class="ident">LaneType::Sidewalk</span> } <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">is_shoulder</span>(<span class="kw-2">&</span><span class="self">self</span>) -> <span class="ident">bool</span> { <span class="self">self</span>.<span class="ident">lane_type</span> <span class="op">==</span> <span class="ident">LaneType::Shoulder</span> } <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">is_parking</span>(<span class="kw-2">&</span><span class="self">self</span>) -> <span class="ident">bool</span> { <span class="self">self</span>.<span class="ident">lane_type</span> <span class="op">==</span> <span class="ident">LaneType::Parking</span> } <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">is_light_rail</span>(<span class="kw-2">&</span><span class="self">self</span>) -> <span class="ident">bool</span> { <span class="self">self</span>.<span class="ident">lane_type</span> <span class="op">==</span> <span class="ident">LaneType::LightRail</span> } <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">get_directed_parent</span>(<span class="kw-2">&</span><span class="self">self</span>) -> <span class="ident">DirectedRoadID</span> { <span class="ident">DirectedRoadID</span> { <span class="ident">road</span>: <span class="self">self</span>.<span class="ident">id</span>.<span class="ident">road</span>, <span class="ident">dir</span>: <span class="self">self</span>.<span class="ident">dir</span>, } } <span class="doccomment">/// This is just based on typical driving sides. Bidirectional or contraflow cycletracks as</span> <span class="doccomment">/// input may produce weird results.</span> <span class="comment">// TODO Reconsider this -- it's confusing</span> <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">get_nearest_side_of_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="ident">RoadSideID</span> { <span class="kw">let</span> <span class="ident">side</span> <span class="op">=</span> <span class="kw">match</span> (<span class="self">self</span>.<span class="ident">dir</span>, <span class="ident">map</span>.<span class="ident">get_config</span>().<span class="ident">driving_side</span>) { (<span class="ident">Direction::Fwd</span>, <span class="ident">DrivingSide::Right</span>) => <span class="ident">SideOfRoad::Right</span>, (<span class="ident">Direction::Back</span>, <span class="ident">DrivingSide::Right</span>) => <span class="ident">SideOfRoad::Left</span>, (<span class="ident">Direction::Fwd</span>, <span class="ident">DrivingSide::Left</span>) => <span class="ident">SideOfRoad::Left</span>, (<span class="ident">Direction::Back</span>, <span class="ident">DrivingSide::Left</span>) => <span class="ident">SideOfRoad::Right</span>, }; <span class="ident">RoadSideID</span> { <span class="ident">road</span>: <span class="self">self</span>.<span class="ident">id</span>.<span class="ident">road</span>, <span class="ident">side</span>, } } <span class="doccomment">/// Returns the set of allowed turn types, based on individual turn lane restrictions. `None`</span> <span class="doccomment">/// means all turn types are allowed.</span> <span class="doccomment">///</span> <span class="doccomment">/// This will return `None` for bus lanes, unless `force_bus` is true. OSM turn restrictions on</span> <span class="doccomment">/// bus lanes usually apply to regular vehicles, not the buses. When generating the turns for</span> <span class="doccomment">/// buses, we probably don't want to use the restrictions.</span> <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">get_lane_level_turn_restrictions</span>( <span class="kw-2">&</span><span class="self">self</span>, <span class="ident">road</span>: <span class="kw-2">&</span><span class="ident">Road</span>, <span class="ident">force_bus</span>: <span class="ident">bool</span>, ) -> <span class="prelude-ty">Option</span><span class="op"><</span><span class="ident">BTreeSet</span><span class="op"><</span><span class="ident">TurnType</span><span class="op">></span><span class="op">></span> { <span class="kw">if</span> <span class="op">!</span><span class="self">self</span>.<span class="ident">is_driving</span>() <span class="op">&&</span> (<span class="op">!</span><span class="ident">force_bus</span> <span class="op">|</span><span class="op">|</span> <span class="op">!</span><span class="self">self</span>.<span class="ident">is_bus</span>()) { <span class="kw">return</span> <span class="prelude-val">None</span>; } <span class="kw">let</span> <span class="ident">all</span> <span class="op">=</span> <span class="kw">if</span> <span class="self">self</span>.<span class="ident">dir</span> <span class="op">==</span> <span class="ident">Direction::Fwd</span> <span class="op">&&</span> <span class="ident">road</span>.<span class="ident">osm_tags</span>.<span class="ident">contains_key</span>(<span class="ident">osm::ENDPT_FWD</span>) { <span class="ident">road</span>.<span class="ident">osm_tags</span> .<span class="ident">get</span>(<span class="string">"turn:lanes:forward"</span>) .<span class="ident">or_else</span>(<span class="op">|</span><span class="op">|</span> <span class="ident">road</span>.<span class="ident">osm_tags</span>.<span class="ident">get</span>(<span class="string">"turn:lanes"</span>))<span class="question-mark">?</span> } <span class="kw">else</span> <span class="kw">if</span> <span class="self">self</span>.<span class="ident">dir</span> <span class="op">==</span> <span class="ident">Direction::Back</span> <span class="op">&&</span> <span class="ident">road</span>.<span class="ident">osm_tags</span>.<span class="ident">contains_key</span>(<span class="ident">osm::ENDPT_BACK</span>) { <span class="ident">road</span>.<span class="ident">osm_tags</span>.<span class="ident">get</span>(<span class="string">"turn:lanes:backward"</span>)<span class="question-mark">?</span> } <span class="kw">else</span> { <span class="kw">return</span> <span class="prelude-val">None</span>; }; <span class="kw">let</span> <span class="ident">parts</span>: <span class="ident">Vec</span><span class="op"><</span><span class="kw-2">&</span><span class="ident">str</span><span class="op">></span> <span class="op">=</span> <span class="ident">all</span>.<span class="ident">split</span>(<span class="string">'|'</span>).<span class="ident">collect</span>(); <span class="comment">// Verify the number of parts matches the road's lanes</span> <span class="kw">let</span> <span class="ident">lanes</span>: <span class="ident">Vec</span><span class="op"><</span><span class="ident">LaneID</span><span class="op">></span> <span class="op">=</span> <span class="ident">road</span> .<span class="ident">children</span>(<span class="self">self</span>.<span class="ident">dir</span>) .<span class="ident">into_iter</span>() .<span class="ident">filter</span>(<span class="op">|</span>(<span class="kw">_</span>, <span class="ident">lt</span>)<span class="op">|</span> <span class="kw-2">*</span><span class="ident">lt</span> <span class="op">==</span> <span class="ident">LaneType::Driving</span> <span class="op">|</span><span class="op">|</span> <span class="kw-2">*</span><span class="ident">lt</span> <span class="op">==</span> <span class="ident">LaneType::Bus</span>) .<span class="ident">map</span>(<span class="op">|</span>(<span class="ident">id</span>, <span class="kw">_</span>)<span class="op">|</span> <span class="ident">id</span>) .<span class="ident">collect</span>(); <span class="kw">if</span> <span class="ident">parts</span>.<span class="ident">len</span>() <span class="op">!</span><span class="op">=</span> <span class="ident">lanes</span>.<span class="ident">len</span>() { <span class="macro">warn!</span>(<span class="string">"{}'s turn restrictions don't match the lanes"</span>, <span class="ident">road</span>.<span class="ident">orig_id</span>); <span class="kw">return</span> <span class="prelude-val">None</span>; } <span class="comment">// TODO More warnings if this fails</span> <span class="kw">let</span> <span class="ident">part</span> <span class="op">=</span> <span class="ident">parts</span>[<span class="ident">lanes</span>.<span class="ident">iter</span>().<span class="ident">position</span>(<span class="op">|</span><span class="ident">l</span><span class="op">|</span> <span class="kw-2">*</span><span class="ident">l</span> <span class="op">==</span> <span class="self">self</span>.<span class="ident">id</span>)<span class="question-mark">?</span>]; <span class="comment">// TODO Probably the target lane should get marked as LaneType::Bus</span> <span class="kw">if</span> <span class="ident">part</span> <span class="op">==</span> <span class="string">"yes"</span> <span class="op">|</span><span class="op">|</span> <span class="ident">part</span> <span class="op">==</span> <span class="string">"psv"</span> <span class="op">|</span><span class="op">|</span> <span class="ident">part</span> <span class="op">==</span> <span class="string">"bus"</span> { <span class="kw">return</span> <span class="prelude-val">None</span>; } <span class="comment">// These both mean that physically, there's no marking saying what turn is valid. In</span> <span class="comment">// practice, this seems to imply straight is always fine, and right/left are fine unless</span> <span class="comment">// covered by an explicit turn lane.</span> <span class="comment">//</span> <span class="comment">// If a multi-lane road lacks markings, just listening to this function will mean that the</span> <span class="comment">// rightmos lanes could turn left, which probably isn't great for people in the middle</span> <span class="comment">// lanes going straight. Further filtering (in remove_merging_turns) will prune this out.</span> <span class="kw">if</span> <span class="ident">part</span>.<span class="ident">is_empty</span>() <span class="op">|</span><span class="op">|</span> <span class="ident">part</span> <span class="op">==</span> <span class="string">"none"</span> { <span class="kw">let</span> <span class="ident">all_explicit_types</span>: <span class="ident">BTreeSet</span><span class="op"><</span><span class="ident">TurnType</span><span class="op">></span> <span class="op">=</span> <span class="ident">parts</span> .<span class="ident">iter</span>() .<span class="ident">flat_map</span>(<span class="op">|</span><span class="ident">part</span><span class="op">|</span> <span class="ident">part</span>.<span class="ident">split</span>(<span class="string">';'</span>).<span class="ident">flat_map</span>(<span class="ident">parse_turn_type_from_osm</span>)) .<span class="ident">collect</span>(); <span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">implied</span> <span class="op">=</span> <span class="ident">BTreeSet::new</span>(); <span class="ident">implied</span>.<span class="ident">insert</span>(<span class="ident">TurnType::Straight</span>); <span class="kw">for</span> <span class="ident">tt</span> <span class="kw">in</span> [<span class="ident">TurnType::Left</span>, <span class="ident">TurnType::Right</span>] { <span class="kw">if</span> <span class="op">!</span><span class="ident">all_explicit_types</span>.<span class="ident">contains</span>(<span class="kw-2">&</span><span class="ident">tt</span>) { <span class="ident">implied</span>.<span class="ident">insert</span>(<span class="ident">tt</span>); } } <span class="kw">return</span> <span class="prelude-val">Some</span>(<span class="ident">implied</span>); } <span class="prelude-val">Some</span>(<span class="ident">part</span>.<span class="ident">split</span>(<span class="string">';'</span>).<span class="ident">flat_map</span>(<span class="ident">parse_turn_type_from_osm</span>).<span class="ident">collect</span>()) } <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">common_endpoint</span>(<span class="kw-2">&</span><span class="self">self</span>, <span class="ident">other</span>: <span class="kw-2">&</span><span class="ident">Lane</span>) -> <span class="ident">CommonEndpoint</span> { <span class="ident">CommonEndpoint::new</span>((<span class="self">self</span>.<span class="ident">src_i</span>, <span class="self">self</span>.<span class="ident">dst_i</span>), (<span class="ident">other</span>.<span class="ident">src_i</span>, <span class="ident">other</span>.<span class="ident">dst_i</span>)) } <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">get_thick_polygon</span>(<span class="kw-2">&</span><span class="self">self</span>) -> <span class="ident">Polygon</span> { <span class="self">self</span>.<span class="ident">lane_center_pts</span>.<span class="ident">make_polygons</span>(<span class="self">self</span>.<span class="ident">width</span>) } } <span class="kw">pub</span> <span class="kw">enum</span> <span class="ident">CommonEndpoint</span> { <span class="doccomment">/// Two lanes/roads share one endpoint</span> <span class="ident">One</span>(<span class="ident">IntersectionID</span>), <span class="doccomment">/// Two lanes/roads share both endpoints, because they both belong to the same road, or there</span> <span class="doccomment">/// are two different roads connecting the same pair of intersections</span> <span class="ident">Both</span>, <span class="doccomment">/// Two lanes/roads don't have any common endpoints</span> <span class="prelude-val">None</span>, } <span class="kw">impl</span> <span class="ident">CommonEndpoint</span> { <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">new</span>( <span class="ident">obj1</span>: (<span class="ident">IntersectionID</span>, <span class="ident">IntersectionID</span>), <span class="ident">obj2</span>: (<span class="ident">IntersectionID</span>, <span class="ident">IntersectionID</span>), ) -> <span class="ident">CommonEndpoint</span> { <span class="attribute">#![<span class="ident">allow</span>(<span class="ident">clippy::suspicious_operation_groupings</span>)]</span> <span class="kw">let</span> <span class="ident">src</span> <span class="op">=</span> <span class="ident">obj1</span>.<span class="number">0</span> <span class="op">==</span> <span class="ident">obj2</span>.<span class="number">0</span> <span class="op">|</span><span class="op">|</span> <span class="ident">obj1</span>.<span class="number">0</span> <span class="op">==</span> <span class="ident">obj2</span>.<span class="number">1</span>; <span class="kw">let</span> <span class="ident">dst</span> <span class="op">=</span> <span class="ident">obj1</span>.<span class="number">1</span> <span class="op">==</span> <span class="ident">obj2</span>.<span class="number">0</span> <span class="op">|</span><span class="op">|</span> <span class="ident">obj1</span>.<span class="number">1</span> <span class="op">==</span> <span class="ident">obj2</span>.<span class="number">1</span>; <span class="kw">if</span> <span class="ident">src</span> <span class="op">&&</span> <span class="ident">dst</span> { <span class="kw">return</span> <span class="ident">CommonEndpoint::Both</span>; } <span class="kw">if</span> <span class="ident">src</span> { <span class="kw">return</span> <span class="ident">CommonEndpoint::One</span>(<span class="ident">obj1</span>.<span class="number">0</span>); } <span class="kw">if</span> <span class="ident">dst</span> { <span class="kw">return</span> <span class="ident">CommonEndpoint::One</span>(<span class="ident">obj1</span>.<span class="number">1</span>); } <span class="ident">CommonEndpoint::None</span> } } <span class="kw">impl</span> <span class="ident">LaneSpec</span> { <span class="doccomment">/// For a given lane type, returns some likely widths. This may depend on the type of the road,</span> <span class="doccomment">/// so the OSM tags are also passed in. The first value returned will be used as a default.</span> <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">typical_lane_widths</span>(<span class="ident">lt</span>: <span class="ident">LaneType</span>, <span class="ident">tags</span>: <span class="kw-2">&</span><span class="ident">Tags</span>) -> <span class="ident">Vec</span><span class="op"><</span>(<span class="ident">Distance</span>, <span class="kw-2">&</span><span class="lifetime">'static</span> <span class="ident">str</span>)<span class="op">></span> { <span class="comment">// These're cobbled together from various sources</span> <span class="kw">match</span> <span class="ident">lt</span> { <span class="comment">// https://en.wikipedia.org/wiki/Lane#Lane_width</span> <span class="ident">LaneType::Driving</span> => { <span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">choices</span> <span class="op">=</span> <span class="macro">vec!</span>[ (<span class="ident">Distance::feet</span>(<span class="number">8.0</span>), <span class="string">"narrow"</span>), (<span class="ident">SERVICE_ROAD_LANE_THICKNESS</span>, <span class="string">"alley"</span>), (<span class="ident">Distance::feet</span>(<span class="number">10.0</span>), <span class="string">"typical"</span>), (<span class="ident">Distance::feet</span>(<span class="number">12.0</span>), <span class="string">"highway"</span>), ]; <span class="kw">if</span> <span class="ident">tags</span>.<span class="ident">is</span>(<span class="ident">osm::HIGHWAY</span>, <span class="string">"service"</span>) <span class="op">|</span><span class="op">|</span> <span class="ident">tags</span>.<span class="ident">is</span>(<span class="string">"narrow"</span>, <span class="string">"yes"</span>) { <span class="ident">choices</span>.<span class="ident">swap</span>(<span class="number">1</span>, <span class="number">0</span>); } <span class="ident">choices</span> } <span class="comment">// https://www.gov.uk/government/publications/cycle-infrastructure-design-ltn-120 table</span> <span class="comment">// 5-2</span> <span class="ident">LaneType::Biking</span> => <span class="macro">vec!</span>[ (<span class="ident">Distance::meters</span>(<span class="number">2.0</span>), <span class="string">"standard"</span>), (<span class="ident">Distance::meters</span>(<span class="number">1.5</span>), <span class="string">"absolute minimum"</span>), ], <span class="comment">// https://nacto.org/publication/urban-street-design-guide/street-design-elements/transit-streets/dedicated-curbside-offset-bus-lanes/</span> <span class="ident">LaneType::Bus</span> => <span class="macro">vec!</span>[ (<span class="ident">Distance::feet</span>(<span class="number">12.0</span>), <span class="string">"normal"</span>), (<span class="ident">Distance::feet</span>(<span class="number">10.0</span>), <span class="string">"minimum"</span>), ], <span class="comment">// https://nacto.org/publication/urban-street-design-guide/street-design-elements/lane-width/</span> <span class="ident">LaneType::Parking</span> => { <span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">choices</span> <span class="op">=</span> <span class="macro">vec!</span>[ (<span class="ident">Distance::feet</span>(<span class="number">7.0</span>), <span class="string">"narrow"</span>), (<span class="ident">SERVICE_ROAD_LANE_THICKNESS</span>, <span class="string">"alley"</span>), (<span class="ident">Distance::feet</span>(<span class="number">9.0</span>), <span class="string">"wide"</span>), (<span class="ident">Distance::feet</span>(<span class="number">15.0</span>), <span class="string">"loading zone"</span>), ]; <span class="kw">if</span> <span class="ident">tags</span>.<span class="ident">is</span>(<span class="ident">osm::HIGHWAY</span>, <span class="string">"service"</span>) <span class="op">|</span><span class="op">|</span> <span class="ident">tags</span>.<span class="ident">is</span>(<span class="string">"narrow"</span>, <span class="string">"yes"</span>) { <span class="ident">choices</span>.<span class="ident">swap</span>(<span class="number">1</span>, <span class="number">0</span>); } <span class="ident">choices</span> } <span class="comment">// Just a guess</span> <span class="ident">LaneType::SharedLeftTurn</span> => <span class="macro">vec!</span>[(<span class="ident">NORMAL_LANE_THICKNESS</span>, <span class="string">"default"</span>)], <span class="comment">// These're often converted from existing lanes, so just retain that width</span> <span class="ident">LaneType::Construction</span> => <span class="macro">vec!</span>[(<span class="ident">NORMAL_LANE_THICKNESS</span>, <span class="string">"default"</span>)], <span class="comment">// No idea, just using this for now...</span> <span class="ident">LaneType::LightRail</span> => <span class="macro">vec!</span>[(<span class="ident">NORMAL_LANE_THICKNESS</span>, <span class="string">"default"</span>)], <span class="comment">// http://www.seattle.gov/rowmanual/manual/4_11.asp</span> <span class="ident">LaneType::Sidewalk</span> => <span class="macro">vec!</span>[ (<span class="ident">SIDEWALK_THICKNESS</span>, <span class="string">"default"</span>), (<span class="ident">Distance::feet</span>(<span class="number">6.0</span>), <span class="string">"wide"</span>), ], <span class="ident">LaneType::Shoulder</span> => <span class="macro">vec!</span>[(<span class="ident">SHOULDER_THICKNESS</span>, <span class="string">"default"</span>)], <span class="comment">// Pretty wild guesses</span> <span class="ident">LaneType::Buffer</span>(<span class="ident">BufferType::Stripes</span>) => <span class="macro">vec!</span>[(<span class="ident">Distance::meters</span>(<span class="number">1.5</span>), <span class="string">"default"</span>)], <span class="ident">LaneType::Buffer</span>(<span class="ident">BufferType::FlexPosts</span>) => { <span class="macro">vec!</span>[(<span class="ident">Distance::meters</span>(<span class="number">1.5</span>), <span class="string">"default"</span>)] } <span class="ident">LaneType::Buffer</span>(<span class="ident">BufferType::Planters</span>) => { <span class="macro">vec!</span>[(<span class="ident">Distance::meters</span>(<span class="number">2.0</span>), <span class="string">"default"</span>)] } <span class="ident">LaneType::Buffer</span>(<span class="ident">BufferType::JerseyBarrier</span>) => { <span class="macro">vec!</span>[(<span class="ident">Distance::meters</span>(<span class="number">1.5</span>), <span class="string">"default"</span>)] } <span class="ident">LaneType::Buffer</span>(<span class="ident">BufferType::Curb</span>) => <span class="macro">vec!</span>[(<span class="ident">Distance::meters</span>(<span class="number">0.5</span>), <span class="string">"default"</span>)], } } } <span class="comment">// See https://wiki.openstreetmap.org/wiki/Key:turn</span> <span class="kw">fn</span> <span class="ident">parse_turn_type_from_osm</span>(<span class="ident">x</span>: <span class="kw-2">&</span><span class="ident">str</span>) -> <span class="ident">Vec</span><span class="op"><</span><span class="ident">TurnType</span><span class="op">></span> { <span class="kw">match</span> <span class="ident">x</span> { <span class="string">"left"</span> => <span class="macro">vec!</span>[<span class="ident">TurnType::Left</span>], <span class="string">"right"</span> => <span class="macro">vec!</span>[<span class="ident">TurnType::Right</span>], <span class="string">"through"</span> => <span class="macro">vec!</span>[<span class="ident">TurnType::Straight</span>], <span class="string">"slight_right"</span> <span class="op">|</span> <span class="string">"slight right"</span> <span class="op">|</span> <span class="string">"merge_to_right"</span> <span class="op">|</span> <span class="string">"sharp_right"</span> => { <span class="macro">vec!</span>[<span class="ident">TurnType::Straight</span>, <span class="ident">TurnType::Right</span>] } <span class="string">"slight_left"</span> <span class="op">|</span> <span class="string">"slight left"</span> <span class="op">|</span> <span class="string">"merge_to_left"</span> <span class="op">|</span> <span class="string">"sharp_left"</span> => { <span class="macro">vec!</span>[<span class="ident">TurnType::Straight</span>, <span class="ident">TurnType::Left</span>] } <span class="string">"reverse"</span> => <span class="macro">vec!</span>[<span class="ident">TurnType::UTurn</span>], <span class="string">"none"</span> <span class="op">|</span> <span class="string">""</span> => <span class="macro">vec!</span>[], <span class="kw">_</span> => { <span class="macro">warn!</span>(<span class="string">"Unknown turn restriction {}"</span>, <span class="ident">x</span>); <span class="macro">vec!</span>[] } } } <span class="attribute">#[<span class="ident">cfg</span>(<span class="ident">test</span>)]</span> <span class="kw">mod</span> <span class="ident">tests</span> { <span class="kw">use</span> <span class="kw">super</span>::<span class="kw-2">*</span>; <span class="attribute">#[<span class="ident">test</span>]</span> <span class="kw">fn</span> <span class="ident">test_lane_id_encoding</span>() { <span class="kw">let</span> <span class="ident">l</span> <span class="op">=</span> <span class="ident">LaneID</span> { <span class="ident">road</span>: <span class="ident">RoadID</span>(<span class="number">42</span>), <span class="ident">offset</span>: <span class="number">3</span>, }; <span class="macro">assert_eq!</span>(<span class="ident">l</span>, <span class="ident">LaneID::decode_u32</span>(<span class="ident">l</span>.<span class="ident">encode_u32</span>())); } } </code></pre></div> </section><section id="search" class="content hidden"></section><div id="rustdoc-vars" data-root-path="../../../" 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