<!DOCTYPE html><htmllang="en"><head><metacharset="utf-8"><metaname="viewport"content="width=device-width, initial-scale=1.0"><metaname="generator"content="rustdoc"><metaname="description"content="A sequence of roads in order, beginning and ending at the same place. No “crossings” – tracing along this sequence should geometrically yield a simple polygon."><metaname="keywords"content="rust, rustlang, rust-lang, Perimeter"><title>Perimeter in map_model - Rust</title><linkrel="stylesheet"type="text/css"href="../normalize.css"><linkrel="stylesheet"type="text/css"href="../rustdoc.css"id="mainThemeStyle"><linkrel="stylesheet"type="text/css"href="../light.css"id="themeStyle"><linkrel="stylesheet"type="text/css"href="../dark.css"disabled><linkrel="stylesheet"type="text/css"href="../ayu.css"disabled><scriptid="default-settings"></script><scriptsrc="../storage.js"></script><scriptsrc="../crates.js"></script><scriptdefersrc="../main.js"></script>
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}</code></pre></div><detailsclass="rustdoc-toggle top-doc"open><summaryclass="hideme"><span>Expand description</span></summary><divclass="docblock"><p>A sequence of roads in order, beginning and ending at the same place. No “crossings” – tracing
along this sequence should geometrically yield a simple polygon.</p>
</div><h2id="implementations"class="small-section-header">Implementations<ahref="#implementations"class="anchor"></a></h2><detailsclass="rustdoc-toggle implementors-toggle"open><summary><divid="impl"class="impl has-srclink"><divclass="rightside"><aclass="srclink"href="../src/map_model/objects/block.rs.html#38-571"title="goto source code">[src]</a></div><ahref="#impl"class="anchor"></a><h3class="code-header in-band">impl <aclass="struct"href="objects/block/struct.Perimeter.html"title="struct map_model::objects::block::Perimeter">Perimeter</a></h3></div></summary><divclass="impl-items"><detailsclass="rustdoc-toggle method-toggle"open><summary><divid="method.single_block"class="method has-srclink"><divclass="rightside"><aclass="srclink"href="../src/map_model/objects/block.rs.html#43-93"title="goto source code">[src]</a></div><ahref="#method.single_block"class="anchor"></a><h4class="code-header">pub fn <ahref="#method.single_block"class="fnname">single_block</a>(<br> map: &<aclass="struct"href="struct.Map.html"title="struct map_model::Map">Map</a>, <br> start: <aclass="struct"href="objects/lane/struct.LaneID.html"title="struct map_model::objects::lane::LaneID">LaneID</a>, <br> skip: &<aclass="struct"href="https://doc.rust-lang.org/1.58.1/std/collections/hash/set/struct.HashSet.html"title="struct std::collections::hash::set::HashSet">HashSet</a><<aclass="struct"href="objects/road/struct.RoadID.html"title="struct map_model::objects::road::RoadID">RoadID</a>><br>) -><aclass="type"href="https://docs.rs/anyhow/1.0.41/anyhow/type.Result.html"title="type anyhow::Result">Result</a><<aclass="struct"href="objects/block/struct.Perimeter.html"title="struct map_model::objects::block::Perimeter">Perimeter</a>></h4></div></summary><divclass="docblock"><p>Starting at any lane, snap to the nearest side of that road, then begin tracing a single
</div></details><detailsclass="rustdoc-toggle method-toggle"open><summary><divid="method.find_all_single_blocks"class="method has-srclink"><divclass="rightside"><aclass="srclink"href="../src/map_model/objects/block.rs.html#97-124"title="goto source code">[src]</a></div><ahref="#method.find_all_single_blocks"class="anchor"></a><h4class="code-header">pub fn <ahref="#method.find_all_single_blocks"class="fnname">find_all_single_blocks</a>(map: &<aclass="struct"href="struct.Map.html"title="struct map_model::Map">Map</a>) -><aclass="struct"href="https://doc.rust-lang.org/1.58.1/alloc/vec/struct.Vec.html"title="struct alloc::vec::Vec">Vec</a><<aclass="struct"href="objects/block/struct.Perimeter.html"title="struct map_model::objects::block::Perimeter">Perimeter</a>><spanclass="notable-traits"><spanclass="notable-traits-tooltip">ⓘ<divclass="notable-traits-tooltiptext"><spanclass="docblock"><divclass="notable">Notable traits for <aclass="struct"href="https://doc.rust-lang.org/1.58.1/alloc/vec/struct.Vec.html"title="struct alloc::vec::Vec">Vec</a><<aclass="primitive"href="https://doc.rust-lang.org/1.58.1/std/primitive.u8.html">u8</a>, A></div><codeclass="content"><spanclass="where fmt-newline">impl<A><aclass="trait"href="https://doc.rust-lang.org/1.58.1/std/io/trait.Write.html"title="trait std::io::Write">Write</a> for <aclass="struct"href="https://doc.rust-lang.org/1.58.1/alloc/vec/struct.Vec.html"title="struct alloc::vec::Vec">Vec</a><<aclass="primitive"href="https://doc.rust-lang.org/1.58.1/std/primitive.u8.html">u8</a>, A><spanclass="where fmt-newline">where<br> A: <aclass="trait"href="https://doc.rust-lang.org/1.58.1/core/alloc/trait.Allocator.html"title="trait core::alloc::Allocator">Allocator</a>, </span></span></code></span></div></span></span></h4></div></summary><divclass="docblock"><p>This calculates all single block perimeters for the entire map. The resulting list does not
</div></details><detailsclass="rustdoc-toggle method-toggle"open><summary><divid="method.find_roads_to_skip_tracing"class="method has-srclink"><divclass="rightside"><aclass="srclink"href="../src/map_model/objects/block.rs.html#129-139"title="goto source code">[src]</a></div><ahref="#method.find_roads_to_skip_tracing"class="anchor"></a><h4class="code-header">pub fn <ahref="#method.find_roads_to_skip_tracing"class="fnname">find_roads_to_skip_tracing</a>(map: &<aclass="struct"href="struct.Map.html"title="struct map_model::Map">Map</a>) -><aclass="struct"href="https://doc.rust-lang.org/1.58.1/std/collections/hash/set/struct.HashSet.html"title="struct std::collections::hash::set::HashSet">HashSet</a><<aclass="struct"href="objects/road/struct.RoadID.html"title="struct map_model::objects::road::RoadID">RoadID</a>></h4></div></summary><divclass="docblock"><p>Trying to form blocks near railways or cycleways that involve bridges/tunnels often causes
</div></details><detailsclass="rustdoc-toggle method-toggle"open><summary><divid="method.undo_invariant"class="method has-srclink"><divclass="rightside"><aclass="srclink"href="../src/map_model/objects/block.rs.html#143-145"title="goto source code">[src]</a></div><ahref="#method.undo_invariant"class="anchor"></a><h4class="code-header">fn <ahref="#method.undo_invariant"class="fnname">undo_invariant</a>(&mut self)</h4></div></summary><divclass="docblock"><p>A perimeter has the first and last road matching up, but that’s confusing to
</div></details><detailsclass="rustdoc-toggle method-toggle"open><summary><divid="method.restore_invariant"class="method has-srclink"><divclass="rightside"><aclass="srclink"href="../src/map_model/objects/block.rs.html#149-151"title="goto source code">[src]</a></div><ahref="#method.restore_invariant"class="anchor"></a><h4class="code-header">fn <ahref="#method.restore_invariant"class="fnname">restore_invariant</a>(&mut self)</h4></div></summary><divclass="docblock"><p>Restore the first=last invariant. Methods may temporarily break this, but must restore it
</div></details><detailsclass="rustdoc-toggle method-toggle"open><summary><divid="method.try_to_merge"class="method has-srclink"><divclass="rightside"><aclass="srclink"href="../src/map_model/objects/block.rs.html#162-276"title="goto source code">[src]</a></div><ahref="#method.try_to_merge"class="anchor"></a><h4class="code-header">fn <ahref="#method.try_to_merge"class="fnname">try_to_merge</a>(<br> &mut self, <br> map: &<aclass="struct"href="struct.Map.html"title="struct map_model::Map">Map</a>, <br> other: &mut <aclass="struct"href="objects/block/struct.Perimeter.html"title="struct map_model::objects::block::Perimeter">Perimeter</a>, <br> debug_failures: <aclass="primitive"href="https://doc.rust-lang.org/1.58.1/std/primitive.bool.html">bool</a><br>) -><aclass="primitive"href="https://doc.rust-lang.org/1.58.1/std/primitive.bool.html">bool</a></h4></div></summary><divclass="docblock"><p>Try to merge two blocks. Returns true if this is successful, which will only be when the
</div></details><detailsclass="rustdoc-toggle method-toggle"open><summary><divid="method.merge_all"class="method has-srclink"><divclass="rightside"><aclass="srclink"href="../src/map_model/objects/block.rs.html#281-317"title="goto source code">[src]</a></div><ahref="#method.merge_all"class="anchor"></a><h4class="code-header">pub fn <ahref="#method.merge_all"class="fnname">merge_all</a>(<br> map: &<aclass="struct"href="struct.Map.html"title="struct map_model::Map">Map</a>, <br> input: <aclass="struct"href="https://doc.rust-lang.org/1.58.1/alloc/vec/struct.Vec.html"title="struct alloc::vec::Vec">Vec</a><<aclass="struct"href="objects/block/struct.Perimeter.html"title="struct map_model::objects::block::Perimeter">Perimeter</a>>, <br> stepwise_debug: <aclass="primitive"href="https://doc.rust-lang.org/1.58.1/std/primitive.bool.html">bool</a><br>) -><aclass="struct"href="https://doc.rust-lang.org/1.58.1/alloc/vec/struct.Vec.html"title="struct alloc::vec::Vec">Vec</a><<aclass="struct"href="objects/block/struct.Perimeter.html"title="struct map_model::objects::block::Perimeter">Perimeter</a>><spanclass="notable-traits"><spanclass="notable-traits-tooltip">ⓘ<divclass="notable-traits-tooltiptext"><spanclass="docblock"><divclass="notable">Notable traits for <aclass="struct"href="https://doc.rust-lang.org/1.58.1/alloc/vec/struct.Vec.html"title="struct alloc::vec::Vec">Vec</a><<aclass="primitive"href="https://doc.rust-lang.org/1.58.1/std/primitive.u8.html">u8</a>, A></div><codeclass="content"><spanclass="where fmt-newline">impl<A><aclass="trait"href="https://doc.rust-lang.org/1.58.1/std/io/trait.Write.html"title="trait std::io::Write">Write</a> for <aclass="struct"href="https://doc.rust-lang.org/1.58.1/alloc/vec/struct.Vec.html"title="struct alloc::vec::Vec">Vec</a><<aclass="primitive"href="https://doc.rust-lang.org/1.58.1/std/primitive.u8.html">u8</a>, A><spanclass="where fmt-newline">where<br> A: <aclass="trait"href="https://doc.rust-lang.org/1.58.1/core/alloc/trait.Allocator.html"title="trait core::alloc::Allocator">Allocator</a>, </span></span></code></span></div></span></span></h4></div></summary><divclass="docblock"><p>Try to merge all given perimeters. If successful, only one perimeter will be returned.
</div></details><detailsclass="rustdoc-toggle method-toggle"open><summary><divid="method.collapse_deadends"class="method has-srclink"><divclass="rightside"><aclass="srclink"href="../src/map_model/objects/block.rs.html#321-355"title="goto source code">[src]</a></div><ahref="#method.collapse_deadends"class="anchor"></a><h4class="code-header">pub fn <ahref="#method.collapse_deadends"class="fnname">collapse_deadends</a>(&mut self)</h4></div></summary><divclass="docblock"><p>If the perimeter follows any dead-end roads, “collapse” them and instead make the perimeter
</div></details><detailsclass="rustdoc-toggle method-toggle"open><summary><divid="method.calculate_coloring"class="method has-srclink"><divclass="rightside"><aclass="srclink"href="../src/map_model/objects/block.rs.html#424-458"title="goto source code">[src]</a></div><ahref="#method.calculate_coloring"class="anchor"></a><h4class="code-header">pub fn <ahref="#method.calculate_coloring"class="fnname">calculate_coloring</a>(<br> input: <aclass="primitive"href="https://doc.rust-lang.org/1.58.1/std/primitive.slice.html">&[</a><aclass="struct"href="objects/block/struct.Perimeter.html"title="struct map_model::objects::block::Perimeter">Perimeter</a><aclass="primitive"href="https://doc.rust-lang.org/1.58.1/std/primitive.slice.html">]</a>, <br> num_colors: <aclass="primitive"href="https://doc.rust-lang.org/1.58.1/std/primitive.usize.html">usize</a><br>) -><aclass="enum"href="https://doc.rust-lang.org/1.58.1/core/option/enum.Option.html"title="enum core::option::Option">Option</a><<aclass="struct"href="https://doc.rust-lang.org/1.58.1/alloc/vec/struct.Vec.html"title="struct alloc::vec::Vec">Vec</a><<aclass="primitive"href="https://doc.rust-lang.org/1.58.1/std/primitive.usize.html">usize</a>>></h4></div></summary><divclass="docblock"><p>Assign each perimeter one of <code>num_colors</code>, such that no two adjacent perimeters share the
</div></details></div></details><detailsclass="rustdoc-toggle implementors-toggle"open><summary><divid="impl-Instrument"class="impl has-srclink"><divclass="rightside"><aclass="srclink"href="https://docs.rs/tracing/0.1.26/src/tracing/instrument.rs.html#155"title="goto source code">[src]</a></div><ahref="#impl-Instrument"class="anchor"></a><h3class="code-header in-band">impl<T><aclass="trait"href="https://docs.rs/tracing/0.1.26/tracing/instrument/trait.Instrument.html"title="trait tracing::instrument::Instrument">Instrument</a> for T</h3></div></summary><divclass="impl-items"><detailsclass="rustdoc-toggle method-toggle"open><summary><divid="method.instrument"class="method trait-impl has-srclink"><divclass="rightside"><aclass="srclink"href="https://docs.rs/tracing/0.1.26/src/tracing/instrument.rs.html#38"title="goto source code">[src]</a></div><ahref="#method.instrument"class="anchor"></a><h4class="code-header">fn <ahref="https://docs.rs/tracing/0.1.26/tracing/instrument/trait.Instrument.html#method.instrument"class="fnname">instrument</a>(self, span: <aclass="struct"href="https://docs.rs/tracing/0.1.26/tracing/span/struct.Span.html"title="struct tracing::span::Span">Span</a>) -><aclass="struct"href="https://docs.rs/tracing/0.1.26/tracing/instrument/struct.Instrumented.html"title="struct tracing::instrument::Instrumented">Instrumented</a><Self></h4></div></summary><divclass='docblock'><p>Instruments this type with the provided <code>Span</code>, returning an
</div></details><detailsclass="rustdoc-toggle method-toggle"open><summary><divid="method.in_current_span"class="method trait-impl has-srclink"><divclass="rightside"><aclass="srclink"href="https://docs.rs/tracing/0.1.26/src/tracing/instrument.rs.html#74"title="goto source code">[src]</a></div><ahref="#method.in_current_span"class="anchor"></a><h4class="code-header">fn <ahref="https://docs.rs/tracing/0.1.26/tracing/instrument/trait.Instrument.html#method.in_current_span"class="fnname">in_current_span</a>(self) -><aclass="struct"href="https://docs.rs/tracing/0.1.26/tracing/instrument/struct.Instrumented.html"title="struct tracing::instrument::Instrumented">Instrumented</a><Self></h4></div></summary><divclass='docblock'><p>Instruments this type with the <ahref="../struct.Span.html#method.current">current</a><code>Span</code>, returning an
</div></details></div></details><detailsclass="rustdoc-toggle implementors-toggle"open><summary><divid="impl-ToOwned"class="impl has-srclink"><divclass="rightside"><aclass="srclink"href="https://doc.rust-lang.org/1.58.1/src/alloc/borrow.rs.html#84-96"title="goto source code">[src]</a></div><ahref="#impl-ToOwned"class="anchor"></a><h3class="code-header in-band">impl<T><aclass="trait"href="https://doc.rust-lang.org/1.58.1/alloc/borrow/trait.ToOwned.html"title="trait alloc::borrow::ToOwned">ToOwned</a> for T <spanclass="where fmt-newline">where<br> T: <aclass="trait"href="https://doc.rust-lang.org/1.58.1/core/clone/trait.Clone.html"title="trait core::clone::Clone">Clone</a>, </span></h3></div></summary><divclass="impl-items"><detailsclass="rustdoc-toggle"open><summary><divid="associatedtype.Owned"class="type trait-impl has-srclink"><ahref="#associatedtype.Owned"class="anchor"></a><h4class="code-header">type <ahref="https://doc.rust-lang.org/1.58.1/alloc/borrow/trait.ToOwned.html#associatedtype.Owned"class="type">Owned</a> = T</h4></div></summary><divclass='docblock'><p>The resulting type after obtaining ownership.</p>
</div></details><detailsclass="rustdoc-toggle method-toggle"open><summary><divid="method.to_owned"class="method trait-impl has-srclink"><divclass="rightside"><aclass="srclink"href="https://doc.rust-lang.org/1.58.1/src/alloc/borrow.rs.html#89"title="goto source code">[src]</a></div><ahref="#method.to_owned"class="anchor"></a><h4class="code-header">pub fn <ahref="https://doc.rust-lang.org/1.58.1/alloc/borrow/trait.ToOwned.html#tymethod.to_owned"class="fnname">to_owned</a>(&self) -> T</h4></div></summary><divclass='docblock'><p>Creates owned data from borrowed data, usually by cloning. <ahref="https://doc.rust-lang.org/1.58.1/alloc/borrow/trait.ToOwned.html#tymethod.to_owned">Read more</a></p>
</div></details><detailsclass="rustdoc-toggle method-toggle"open><summary><divid="method.clone_into"class="method trait-impl has-srclink"><divclass="rightside"><aclass="srclink"href="https://doc.rust-lang.org/1.58.1/src/alloc/borrow.rs.html#93"title="goto source code">[src]</a></div><ahref="#method.clone_into"class="anchor"></a><h4class="code-header">pub fn <ahref="https://doc.rust-lang.org/1.58.1/alloc/borrow/trait.ToOwned.html#method.clone_into"class="fnname">clone_into</a>(&self, target: <aclass="primitive"href="https://doc.rust-lang.org/1.58.1/std/primitive.reference.html">&mut </a>T)</h4></div></summary><divclass="item-info"><divclass="stab unstable"><spanclass="emoji">🔬</span> This is a nightly-only experimental API. (<code>toowned_clone_into</code>)</div></div><divclass='docblock'><p>Uses borrowed data to replace owned data, usually by cloning. <ahref="https://doc.rust-lang.org/1.58.1/alloc/borrow/trait.ToOwned.html#method.clone_into">Read more</a></p>
</div></details></div></details><detailsclass="rustdoc-toggle implementors-toggle"open><summary><divid="impl-TryFrom%3CU%3E"class="impl has-srclink"><divclass="rightside"><aclass="srclink"href="https://doc.rust-lang.org/1.58.1/src/core/convert/mod.rs.html#587-596"title="goto source code">[src]</a></div><ahref="#impl-TryFrom%3CU%3E"class="anchor"></a><h3class="code-header in-band">impl<T, U><aclass="trait"href="https://doc.rust-lang.org/1.58.1/core/convert/trait.TryFrom.html"title="trait core::convert::TryFrom">TryFrom</a><U> for T <spanclass="where fmt-newline">where<br> U: <aclass="trait"href="https://doc.rust-lang.org/1.58.1/core/convert/trait.Into.html"title="trait core::convert::Into">Into</a><T>, </span></h3></div></summary><divclass="impl-items"><detailsclass="rustdoc-toggle"open><summary><divid="associatedtype.Error"class="type trait-impl has-srclink"><ahref="#associatedtype.Error"class="anchor"></a><h4class="code-header">type <ahref="https://doc.rust-lang.org/1.58.1/core/convert/trait.TryFrom.html#associatedtype.Error"class="type">Error</a> = <aclass="enum"href="https://doc.rust-lang.org/1.58.1/core/convert/enum.Infallible.html"title="enum core::convert::Infallible">Infallible</a></h4></div></summary><divclass='docblock'><p>The type returned in the event of a conversion error.</p>
</div></details><detailsclass="rustdoc-toggle method-toggle"open><summary><divid="method.try_from"class="method trait-impl has-srclink"><divclass="rightside"><aclass="srclink"href="https://doc.rust-lang.org/1.58.1/src/core/convert/mod.rs.html#593"title="goto source code">[src]</a></div><ahref="#method.try_from"class="anchor"></a><h4class="code-header">pub fn <ahref="https://doc.rust-lang.org/1.58.1/core/convert/trait.TryFrom.html#tymethod.try_from"class="fnname">try_from</a>(value: U) -><aclass="enum"href="https://doc.rust-lang.org/1.58.1/core/result/enum.Result.html"title="enum core::result::Result">Result</a><T, <T as <aclass="trait"href="https://doc.rust-lang.org/1.58.1/core/convert/trait.TryFrom.html"title="trait core::convert::TryFrom">TryFrom</a><U>>::<aclass="type"href="https://doc.rust-lang.org/1.58.1/core/convert/trait.TryFrom.html#associatedtype.Error"title="type core::convert::TryFrom::Error">Error</a>></h4></div></summary><divclass='docblock'><p>Performs the conversion.</p>
</div></details></div></details><detailsclass="rustdoc-toggle implementors-toggle"open><summary><divid="impl-TryInto%3CU%3E"class="impl has-srclink"><divclass="rightside"><aclass="srclink"href="https://doc.rust-lang.org/1.58.1/src/core/convert/mod.rs.html#573-582"title="goto source code">[src]</a></div><ahref="#impl-TryInto%3CU%3E"class="anchor"></a><h3class="code-header in-band">impl<T, U><aclass="trait"href="https://doc.rust-lang.org/1.58.1/core/convert/trait.TryInto.html"title="trait core::convert::TryInto">TryInto</a><U> for T <spanclass="where fmt-newline">where<br> U: <aclass="trait"href="https://doc.rust-lang.org/1.58.1/core/convert/trait.TryFrom.html"title="trait core::convert::TryFrom">TryFrom</a><T>, </span></h3></div></summary><divclass="impl-items"><detailsclass="rustdoc-toggle"open><summary><divid="associatedtype.Error-1"class="type trait-impl has-srclink"><ahref="#associatedtype.Error-1"class="anchor"></a><h4class="code-header">type <ahref="https://doc.rust-lang.org/1.58.1/core/convert/trait.TryInto.html#associatedtype.Error"class="type">Error</a> = <U as <aclass="trait"href="https://doc.rust-lang.org/1.58.1/core/convert/trait.TryFrom.html"title="trait core::convert::TryFrom">TryFrom</a><T>>::<aclass="type"href="https://doc.rust-lang.org/1.58.1/core/convert/trait.TryFrom.html#associatedtype.Error"title="type core::convert::TryFrom::Error">Error</a></h4></div></summary><divclass='docblock'><p>The type returned in the event of a conversion error.</p>
</div></details><detailsclass="rustdoc-toggle method-toggle"open><summary><divid="method.try_into"class="method trait-impl has-srclink"><divclass="rightside"><aclass="srclink"href="https://doc.rust-lang.org/1.58.1/src/core/convert/mod.rs.html#579"title="goto source code">[src]</a></div><ahref="#method.try_into"class="anchor"></a><h4class="code-header">pub fn <ahref="https://doc.rust-lang.org/1.58.1/core/convert/trait.TryInto.html#tymethod.try_into"class="fnname">try_into</a>(self) -><aclass="enum"href="https://doc.rust-lang.org/1.58.1/core/result/enum.Result.html"title="enum core::result::Result">Result</a><U, <U as <aclass="trait"href="https://doc.rust-lang.org/1.58.1/core/convert/trait.TryFrom.html"title="trait core::convert::TryFrom">TryFrom</a><T>>::<aclass="type"href="https://doc.rust-lang.org/1.58.1/core/convert/trait.TryFrom.html#associatedtype.Error"title="type core::convert::TryFrom::Error">Error</a>></h4></div></summary><divclass='docblock'><p>Performs the conversion.</p>
