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</pre><div class="example-wrap"><pre class="rust ">
<span class="kw">use</span> <span class="ident">geom</span>::{<span class="ident">Angle</span>, <span class="ident">ArrowCap</span>, <span class="ident">Distance</span>, <span class="ident">PolyLine</span>, <span class="ident">Polygon</span>, <span class="ident">Pt2D</span>, <span class="ident">Ring</span>};
<span class="kw">use</span> <span class="ident">map_model</span>::{<span class="ident">Map</span>, <span class="ident">TurnType</span>};
<span class="kw">use</span> <span class="ident">sim</span>::{<span class="ident">CarID</span>, <span class="ident">CarStatus</span>, <span class="ident">DrawCarInput</span>, <span class="ident">Intent</span>, <span class="ident">Sim</span>, <span class="ident">VehicleType</span>};
<span class="kw">use</span> <span class="ident">widgetry</span>::{<span class="ident">Color</span>, <span class="ident">Drawable</span>, <span class="ident">GeomBatch</span>, <span class="ident">GfxCtx</span>, <span class="ident">Line</span>, <span class="ident">Prerender</span>, <span class="ident">Text</span>};

<span class="kw">use</span> <span class="kw">crate</span><span class="ident">::colors::ColorScheme</span>;
<span class="kw">use</span> <span class="kw">crate</span><span class="ident">::render</span>::{<span class="ident">grey_out_unhighlighted_people</span>, <span class="ident">DrawOptions</span>, <span class="ident">Renderable</span>, <span class="ident">OUTLINE_THICKNESS</span>};
<span class="kw">use</span> <span class="kw">crate</span>::{<span class="ident">AppLike</span>, <span class="ident">ID</span>};

<span class="kw">const</span> <span class="ident">CAR_WIDTH</span>: <span class="ident">Distance</span> <span class="op">=</span> <span class="ident">Distance::const_meters</span>(<span class="number">1.75</span>);

<span class="kw">pub</span> <span class="kw">struct</span> <span class="ident">DrawCar</span> {
    <span class="kw">pub</span> <span class="ident">id</span>: <span class="ident">CarID</span>,
    <span class="ident">body</span>: <span class="ident">PolyLine</span>,
    <span class="ident">body_polygon</span>: <span class="ident">Polygon</span>,
    <span class="ident">zorder</span>: <span class="ident">isize</span>,

    <span class="ident">draw_default</span>: <span class="ident">Drawable</span>,
}

<span class="kw">impl</span> <span class="ident">DrawCar</span> {
    <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">new</span>(
        <span class="ident">input</span>: <span class="ident">DrawCarInput</span>,
        <span class="ident">map</span>: <span class="kw-2">&amp;</span><span class="ident">Map</span>,
        <span class="ident">sim</span>: <span class="kw-2">&amp;</span><span class="ident">Sim</span>,
        <span class="ident">prerender</span>: <span class="kw-2">&amp;</span><span class="ident">Prerender</span>,
        <span class="ident">cs</span>: <span class="kw-2">&amp;</span><span class="ident">ColorScheme</span>,
    ) <span class="op">-</span><span class="op">&gt;</span> <span class="ident">DrawCar</span> {
        <span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">draw_default</span> <span class="op">=</span> <span class="ident">GeomBatch::new</span>();

        <span class="comment">// Wheels</span>
        <span class="kw">for</span> <span class="ident">side</span> <span class="kw">in</span> <span class="macro">vec!</span>[
            <span class="ident">input</span>.<span class="ident">body</span>.<span class="ident">shift_right</span>(<span class="ident">CAR_WIDTH</span> <span class="op">/</span> <span class="number">2.0</span>),
            <span class="ident">input</span>.<span class="ident">body</span>.<span class="ident">shift_left</span>(<span class="ident">CAR_WIDTH</span> <span class="op">/</span> <span class="number">2.0</span>),
        ]
        .<span class="ident">into_iter</span>()
        .<span class="ident">flatten</span>()
        {
            <span class="kw">let</span> <span class="ident">len</span> <span class="op">=</span> <span class="ident">side</span>.<span class="ident">length</span>();
            <span class="kw">if</span> <span class="ident">len</span> <span class="op">&lt;</span><span class="op">=</span> <span class="ident">Distance::meters</span>(<span class="number">2.0</span>) {
                <span class="comment">// The original body may be fine, but sometimes shifting drastically shortens the</span>
                <span class="comment">// length due to miter threshold chopping. Just give up on wheels in that case</span>
                <span class="comment">// instead of crashing.</span>
                <span class="kw">continue</span>;
            }
            <span class="ident">draw_default</span>.<span class="ident">push</span>(
                <span class="ident">cs</span>.<span class="ident">bike_frame</span>,
                <span class="ident">side</span>.<span class="ident">exact_slice</span>(<span class="ident">Distance::meters</span>(<span class="number">0.5</span>), <span class="ident">Distance::meters</span>(<span class="number">1.0</span>))
                    .<span class="ident">make_polygons</span>(<span class="ident">OUTLINE_THICKNESS</span> <span class="op">/</span> <span class="number">2.0</span>),
            );
            <span class="ident">draw_default</span>.<span class="ident">push</span>(
                <span class="ident">cs</span>.<span class="ident">bike_frame</span>,
                <span class="ident">side</span>.<span class="ident">exact_slice</span>(<span class="ident">len</span> <span class="op">-</span> <span class="ident">Distance::meters</span>(<span class="number">2.0</span>), <span class="ident">len</span> <span class="op">-</span> <span class="ident">Distance::meters</span>(<span class="number">1.5</span>))
                    .<span class="ident">make_polygons</span>(<span class="ident">OUTLINE_THICKNESS</span> <span class="op">/</span> <span class="number">2.0</span>),
            );
        }

        <span class="kw">let</span> <span class="ident">body_polygon</span> <span class="op">=</span> <span class="kw">if</span> <span class="ident">input</span>.<span class="ident">body</span>.<span class="ident">length</span>() <span class="op">&lt;</span> <span class="ident">Distance::meters</span>(<span class="number">1.1</span>) {
            <span class="comment">// Simpler shape while appearing from a border</span>
            <span class="ident">input</span>.<span class="ident">body</span>.<span class="ident">make_polygons</span>(<span class="ident">CAR_WIDTH</span>)
        } <span class="kw">else</span> {
            <span class="kw">let</span> <span class="ident">front_corner</span> <span class="op">=</span> <span class="ident">input</span>.<span class="ident">body</span>.<span class="ident">length</span>() <span class="op">-</span> <span class="ident">Distance::meters</span>(<span class="number">1.0</span>);
            <span class="kw">let</span> <span class="ident">thick_line</span> <span class="op">=</span> <span class="ident">input</span>
                .<span class="ident">body</span>
                .<span class="ident">exact_slice</span>(<span class="ident">Distance::ZERO</span>, <span class="ident">front_corner</span>)
                .<span class="ident">make_polygons</span>(<span class="ident">CAR_WIDTH</span>);

            <span class="kw">let</span> (<span class="ident">corner_pt</span>, <span class="ident">corner_angle</span>) <span class="op">=</span> <span class="ident">input</span>.<span class="ident">body</span>.<span class="ident">must_dist_along</span>(<span class="ident">front_corner</span>);
            <span class="kw">let</span> <span class="ident">tip_pt</span> <span class="op">=</span> <span class="ident">input</span>.<span class="ident">body</span>.<span class="ident">last_pt</span>();
            <span class="kw">let</span> <span class="ident">tip_angle</span> <span class="op">=</span> <span class="ident">input</span>.<span class="ident">body</span>.<span class="ident">last_line</span>().<span class="ident">angle</span>();
            <span class="comment">// If this fails for any reason, just fallback to the simple shape</span>
            <span class="kw">match</span> <span class="ident">Ring::new</span>(<span class="macro">vec!</span>[
                <span class="ident">corner_pt</span>.<span class="ident">project_away</span>(<span class="ident">CAR_WIDTH</span> <span class="op">/</span> <span class="number">2.0</span>, <span class="ident">corner_angle</span>.<span class="ident">rotate_degs</span>(<span class="number">90.0</span>)),
                <span class="ident">corner_pt</span>.<span class="ident">project_away</span>(<span class="ident">CAR_WIDTH</span> <span class="op">/</span> <span class="number">2.0</span>, <span class="ident">corner_angle</span>.<span class="ident">rotate_degs</span>(<span class="op">-</span><span class="number">90.0</span>)),
                <span class="ident">tip_pt</span>.<span class="ident">project_away</span>(<span class="ident">CAR_WIDTH</span> <span class="op">/</span> <span class="number">4.0</span>, <span class="ident">tip_angle</span>.<span class="ident">rotate_degs</span>(<span class="op">-</span><span class="number">90.0</span>)),
                <span class="ident">tip_pt</span>.<span class="ident">project_away</span>(<span class="ident">CAR_WIDTH</span> <span class="op">/</span> <span class="number">4.0</span>, <span class="ident">tip_angle</span>.<span class="ident">rotate_degs</span>(<span class="number">90.0</span>)),
                <span class="ident">corner_pt</span>.<span class="ident">project_away</span>(<span class="ident">CAR_WIDTH</span> <span class="op">/</span> <span class="number">2.0</span>, <span class="ident">corner_angle</span>.<span class="ident">rotate_degs</span>(<span class="number">90.0</span>)),
            ]) {
                <span class="prelude-val">Ok</span>(<span class="ident">front</span>) <span class="op">=</span><span class="op">&gt;</span> <span class="ident">front</span>.<span class="ident">into_polygon</span>().<span class="ident">union</span>(<span class="ident">thick_line</span>),
                <span class="prelude-val">Err</span>(<span class="kw">_</span>) <span class="op">=</span><span class="op">&gt;</span> <span class="ident">thick_line</span>,
            }
        };

        <span class="ident">draw_default</span>.<span class="ident">push</span>(<span class="ident">zoomed_color_car</span>(<span class="kw-2">&amp;</span><span class="ident">input</span>, <span class="ident">sim</span>, <span class="ident">cs</span>), <span class="ident">body_polygon</span>.<span class="ident">clone</span>());
        <span class="kw">if</span> <span class="ident">input</span>.<span class="ident">status</span> <span class="op">=</span><span class="op">=</span> <span class="ident">CarStatus::Parked</span> {
            <span class="ident">draw_default</span>.<span class="ident">append</span>(
                <span class="ident">GeomBatch::load_svg</span>(<span class="ident">prerender</span>, <span class="string">&quot;system/assets/map/parked_car.svg&quot;</span>)
                    .<span class="ident">scale</span>(<span class="number">0.01</span>)
                    .<span class="ident">centered_on</span>(<span class="ident">input</span>.<span class="ident">body</span>.<span class="ident">middle</span>()),
            );
        }

        <span class="kw">if</span> <span class="ident">input</span>.<span class="ident">intent</span> <span class="op">=</span><span class="op">=</span> <span class="prelude-val">Some</span>(<span class="ident">Intent::Parking</span>) {
            <span class="comment">// draw intent bubble</span>
            <span class="kw">let</span> <span class="ident">bubble_z</span> <span class="op">=</span> <span class="op">-</span><span class="number">0.0001</span>;
            <span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">bubble_batch</span> <span class="op">=</span>
                <span class="ident">GeomBatch::load_svg</span>(<span class="ident">prerender</span>, <span class="string">&quot;system/assets/map/thought_bubble.svg&quot;</span>)
                    .<span class="ident">scale</span>(<span class="number">0.05</span>)
                    .<span class="ident">centered_on</span>(<span class="ident">input</span>.<span class="ident">body</span>.<span class="ident">middle</span>())
                    .<span class="ident">translate</span>(<span class="number">4.0</span>, <span class="op">-</span><span class="number">4.0</span>)
                    .<span class="ident">set_z_offset</span>(<span class="ident">bubble_z</span>);

            <span class="kw">let</span> <span class="ident">intent_batch</span> <span class="op">=</span> <span class="ident">GeomBatch::load_svg</span>(<span class="ident">prerender</span>, <span class="string">&quot;system/assets/map/parking.svg&quot;</span>)
                .<span class="ident">scale</span>(<span class="number">0.015</span>)
                .<span class="ident">centered_on</span>(<span class="ident">input</span>.<span class="ident">body</span>.<span class="ident">middle</span>())
                .<span class="ident">translate</span>(<span class="number">4.5</span>, <span class="op">-</span><span class="number">4.5</span>)
                .<span class="ident">set_z_offset</span>(<span class="ident">bubble_z</span>);

            <span class="ident">bubble_batch</span>.<span class="ident">append</span>(<span class="ident">intent_batch</span>);

            <span class="ident">draw_default</span>.<span class="ident">append</span>(<span class="ident">bubble_batch</span>);
        }

        <span class="comment">// If the vehicle is temporarily too short for anything, just omit.</span>
        <span class="kw">if</span> <span class="ident">input</span>.<span class="ident">body</span>.<span class="ident">length</span>() <span class="op">&gt;</span><span class="op">=</span> <span class="ident">Distance::meters</span>(<span class="number">2.5</span>) {
            <span class="kw">let</span> <span class="ident">arrow_len</span> <span class="op">=</span> <span class="number">0.8</span> <span class="op">*</span> <span class="ident">CAR_WIDTH</span>;
            <span class="kw">let</span> <span class="ident">arrow_thickness</span> <span class="op">=</span> <span class="ident">Distance::meters</span>(<span class="number">0.5</span>);

            <span class="kw">if</span> <span class="kw">let</span> <span class="prelude-val">Some</span>(<span class="ident">t</span>) <span class="op">=</span> <span class="ident">input</span>.<span class="ident">waiting_for_turn</span> {
                <span class="kw">match</span> <span class="ident">map</span>.<span class="ident">get_t</span>(<span class="ident">t</span>).<span class="ident">turn_type</span> {
                    <span class="ident">TurnType::Left</span> <span class="op">|</span> <span class="ident">TurnType::UTurn</span> <span class="op">=</span><span class="op">&gt;</span> {
                        <span class="kw">let</span> (<span class="ident">pos</span>, <span class="ident">angle</span>) <span class="op">=</span> <span class="ident">input</span>
                            .<span class="ident">body</span>
                            .<span class="ident">must_dist_along</span>(<span class="ident">input</span>.<span class="ident">body</span>.<span class="ident">length</span>() <span class="op">-</span> <span class="ident">Distance::meters</span>(<span class="number">2.5</span>));

                        <span class="ident">draw_default</span>.<span class="ident">push</span>(
                            <span class="ident">cs</span>.<span class="ident">turn_arrow</span>,
                            <span class="ident">PolyLine::must_new</span>(<span class="macro">vec!</span>[
                                <span class="ident">pos</span>.<span class="ident">project_away</span>(<span class="ident">arrow_len</span> <span class="op">/</span> <span class="number">2.0</span>, <span class="ident">angle</span>.<span class="ident">rotate_degs</span>(<span class="number">90.0</span>)),
                                <span class="ident">pos</span>.<span class="ident">project_away</span>(<span class="ident">arrow_len</span> <span class="op">/</span> <span class="number">2.0</span>, <span class="ident">angle</span>.<span class="ident">rotate_degs</span>(<span class="op">-</span><span class="number">90.0</span>)),
                            ])
                            .<span class="ident">make_arrow</span>(<span class="ident">arrow_thickness</span>, <span class="ident">ArrowCap::Triangle</span>),
                        );
                    }
                    <span class="ident">TurnType::Right</span> <span class="op">=</span><span class="op">&gt;</span> {
                        <span class="kw">let</span> (<span class="ident">pos</span>, <span class="ident">angle</span>) <span class="op">=</span> <span class="ident">input</span>
                            .<span class="ident">body</span>
                            .<span class="ident">must_dist_along</span>(<span class="ident">input</span>.<span class="ident">body</span>.<span class="ident">length</span>() <span class="op">-</span> <span class="ident">Distance::meters</span>(<span class="number">2.5</span>));

                        <span class="ident">draw_default</span>.<span class="ident">push</span>(
                            <span class="ident">cs</span>.<span class="ident">turn_arrow</span>,
                            <span class="ident">PolyLine::must_new</span>(<span class="macro">vec!</span>[
                                <span class="ident">pos</span>.<span class="ident">project_away</span>(<span class="ident">arrow_len</span> <span class="op">/</span> <span class="number">2.0</span>, <span class="ident">angle</span>.<span class="ident">rotate_degs</span>(<span class="op">-</span><span class="number">90.0</span>)),
                                <span class="ident">pos</span>.<span class="ident">project_away</span>(<span class="ident">arrow_len</span> <span class="op">/</span> <span class="number">2.0</span>, <span class="ident">angle</span>.<span class="ident">rotate_degs</span>(<span class="number">90.0</span>)),
                            ])
                            .<span class="ident">make_arrow</span>(<span class="ident">arrow_thickness</span>, <span class="ident">ArrowCap::Triangle</span>),
                        );
                    }
                    <span class="ident">TurnType::Straight</span> <span class="op">=</span><span class="op">&gt;</span> {}
                    <span class="ident">TurnType::Crosswalk</span> <span class="op">|</span> <span class="ident">TurnType::SharedSidewalkCorner</span> <span class="op">=</span><span class="op">&gt;</span> <span class="macro">unreachable!</span>(),
                }

                <span class="comment">// Always draw the brake light</span>
                <span class="kw">let</span> (<span class="ident">pos</span>, <span class="ident">angle</span>) <span class="op">=</span> <span class="ident">input</span>.<span class="ident">body</span>.<span class="ident">must_dist_along</span>(<span class="ident">Distance::meters</span>(<span class="number">0.5</span>));
                <span class="comment">// TODO rounded</span>
                <span class="kw">let</span> <span class="ident">window_length_gap</span> <span class="op">=</span> <span class="ident">Distance::meters</span>(<span class="number">0.2</span>);
                <span class="kw">let</span> <span class="ident">window_thickness</span> <span class="op">=</span> <span class="ident">Distance::meters</span>(<span class="number">0.3</span>);
                <span class="ident">draw_default</span>.<span class="ident">push</span>(
                    <span class="ident">cs</span>.<span class="ident">brake_light</span>,
                    <span class="ident">thick_line_from_angle</span>(
                        <span class="ident">window_thickness</span>,
                        <span class="ident">CAR_WIDTH</span> <span class="op">-</span> <span class="ident">window_length_gap</span> <span class="op">*</span> <span class="number">2.0</span>,
                        <span class="ident">pos</span>.<span class="ident">project_away</span>(
                            <span class="ident">CAR_WIDTH</span> <span class="op">/</span> <span class="number">2.0</span> <span class="op">-</span> <span class="ident">window_length_gap</span>,
                            <span class="ident">angle</span>.<span class="ident">rotate_degs</span>(<span class="op">-</span><span class="number">90.0</span>),
                        ),
                        <span class="ident">angle</span>.<span class="ident">rotate_degs</span>(<span class="number">90.0</span>),
                    ),
                );
            }
        }

        <span class="kw">if</span> <span class="kw">let</span> <span class="prelude-val">Some</span>(<span class="ident">line</span>) <span class="op">=</span> <span class="ident">input</span>.<span class="ident">label</span> {
            <span class="comment">// If the vehicle is temporarily too short, just skip the label.</span>
            <span class="kw">if</span> <span class="kw">let</span> <span class="prelude-val">Ok</span>((<span class="ident">pt</span>, <span class="ident">angle</span>)) <span class="op">=</span> <span class="ident">input</span>
                .<span class="ident">body</span>
                .<span class="ident">dist_along</span>(<span class="ident">input</span>.<span class="ident">body</span>.<span class="ident">length</span>() <span class="op">-</span> <span class="ident">Distance::meters</span>(<span class="number">3.5</span>))
            {
                <span class="ident">draw_default</span>.<span class="ident">append</span>(
                    <span class="ident">Text::from</span>(<span class="ident">Line</span>(<span class="ident">line</span>).<span class="ident">fg</span>(<span class="ident">cs</span>.<span class="ident">bus_label</span>))
                        .<span class="ident">render_autocropped</span>(<span class="ident">prerender</span>)
                        .<span class="ident">scale</span>(<span class="number">0.07</span>)
                        .<span class="ident">centered_on</span>(<span class="ident">pt</span>)
                        .<span class="ident">rotate</span>(<span class="ident">angle</span>.<span class="ident">reorient</span>()),
                );
            }
        }

        <span class="comment">// TODO Technically some of the body may need to be at different zorders during</span>
        <span class="comment">// transitions, but that&#39;s way too much effort</span>
        <span class="kw">let</span> <span class="ident">zorder</span> <span class="op">=</span> <span class="ident">input</span>
            .<span class="ident">partly_on</span>
            .<span class="ident">into_iter</span>()
            .<span class="ident">chain</span>(<span class="macro">vec!</span>[<span class="ident">input</span>.<span class="ident">on</span>])
            .<span class="ident">map</span>(<span class="op">|</span><span class="ident">on</span><span class="op">|</span> <span class="ident">on</span>.<span class="ident">get_zorder</span>(<span class="ident">map</span>))
            .<span class="ident">max</span>()
            .<span class="ident">unwrap</span>();
        <span class="ident">DrawCar</span> {
            <span class="ident">id</span>: <span class="ident">input</span>.<span class="ident">id</span>,
            <span class="ident">body</span>: <span class="ident">input</span>.<span class="ident">body</span>,
            <span class="ident">body_polygon</span>,
            <span class="ident">zorder</span>,
            <span class="ident">draw_default</span>: <span class="ident">prerender</span>.<span class="ident">upload</span>(<span class="ident">draw_default</span>),
        }
    }
}

<span class="kw">impl</span> <span class="ident">Renderable</span> <span class="kw">for</span> <span class="ident">DrawCar</span> {
    <span class="kw">fn</span> <span class="ident">get_id</span>(<span class="kw-2">&amp;</span><span class="self">self</span>) <span class="op">-</span><span class="op">&gt;</span> <span class="ident">ID</span> {
        <span class="ident">ID::Car</span>(<span class="self">self</span>.<span class="ident">id</span>)
    }

    <span class="kw">fn</span> <span class="ident">draw</span>(<span class="kw-2">&amp;</span><span class="self">self</span>, <span class="ident">g</span>: <span class="kw-2">&amp;</span><span class="kw-2">mut</span> <span class="ident">GfxCtx</span>, <span class="kw">_</span>: <span class="kw-2">&amp;</span><span class="kw">dyn</span> <span class="ident">AppLike</span>, <span class="kw">_</span>: <span class="kw-2">&amp;</span><span class="ident">DrawOptions</span>) {
        <span class="ident">g</span>.<span class="ident">redraw</span>(<span class="kw-2">&amp;</span><span class="self">self</span>.<span class="ident">draw_default</span>);
    }

    <span class="kw">fn</span> <span class="ident">get_outline</span>(<span class="kw-2">&amp;</span><span class="self">self</span>, <span class="kw">_</span>: <span class="kw-2">&amp;</span><span class="ident">Map</span>) <span class="op">-</span><span class="op">&gt;</span> <span class="ident">Polygon</span> {
        <span class="self">self</span>.<span class="ident">body</span>
            .<span class="ident">to_thick_boundary</span>(<span class="ident">CAR_WIDTH</span>, <span class="ident">OUTLINE_THICKNESS</span>)
            .<span class="ident">unwrap_or_else</span>(<span class="op">|</span><span class="op">|</span> <span class="self">self</span>.<span class="ident">body_polygon</span>.<span class="ident">clone</span>())
    }

    <span class="kw">fn</span> <span class="ident">contains_pt</span>(<span class="kw-2">&amp;</span><span class="self">self</span>, <span class="ident">pt</span>: <span class="ident">Pt2D</span>, <span class="kw">_</span>: <span class="kw-2">&amp;</span><span class="ident">Map</span>) <span class="op">-</span><span class="op">&gt;</span> <span class="ident">bool</span> {
        <span class="self">self</span>.<span class="ident">body_polygon</span>.<span class="ident">contains_pt</span>(<span class="ident">pt</span>)
    }

    <span class="kw">fn</span> <span class="ident">get_zorder</span>(<span class="kw-2">&amp;</span><span class="self">self</span>) <span class="op">-</span><span class="op">&gt;</span> <span class="ident">isize</span> {
        <span class="self">self</span>.<span class="ident">zorder</span>
    }
}

<span class="kw">fn</span> <span class="ident">thick_line_from_angle</span>(
    <span class="ident">thickness</span>: <span class="ident">Distance</span>,
    <span class="ident">line_length</span>: <span class="ident">Distance</span>,
    <span class="ident">pt</span>: <span class="ident">Pt2D</span>,
    <span class="ident">angle</span>: <span class="ident">Angle</span>,
) <span class="op">-</span><span class="op">&gt;</span> <span class="ident">Polygon</span> {
    <span class="kw">let</span> <span class="ident">pt2</span> <span class="op">=</span> <span class="ident">pt</span>.<span class="ident">project_away</span>(<span class="ident">line_length</span>, <span class="ident">angle</span>);
    <span class="comment">// Shouldn&#39;t ever fail for a single line</span>
    <span class="ident">PolyLine::must_new</span>(<span class="macro">vec!</span>[<span class="ident">pt</span>, <span class="ident">pt2</span>]).<span class="ident">make_polygons</span>(<span class="ident">thickness</span>)
}

<span class="kw">fn</span> <span class="ident">zoomed_color_car</span>(<span class="ident">input</span>: <span class="kw-2">&amp;</span><span class="ident">DrawCarInput</span>, <span class="ident">sim</span>: <span class="kw-2">&amp;</span><span class="ident">Sim</span>, <span class="ident">cs</span>: <span class="kw-2">&amp;</span><span class="ident">ColorScheme</span>) <span class="op">-</span><span class="op">&gt;</span> <span class="ident">Color</span> {
    <span class="kw">if</span> <span class="ident">input</span>.<span class="ident">id</span>.<span class="ident">vehicle_type</span> <span class="op">=</span><span class="op">=</span> <span class="ident">VehicleType::Bus</span> {
        <span class="ident">cs</span>.<span class="ident">bus_body</span>
    } <span class="kw">else</span> <span class="kw">if</span> <span class="ident">input</span>.<span class="ident">id</span>.<span class="ident">vehicle_type</span> <span class="op">=</span><span class="op">=</span> <span class="ident">VehicleType::Train</span> {
        <span class="ident">cs</span>.<span class="ident">train_body</span>
    } <span class="kw">else</span> {
        <span class="kw">let</span> <span class="ident">color</span> <span class="op">=</span> <span class="kw">match</span> <span class="ident">input</span>.<span class="ident">status</span> {
            <span class="ident">CarStatus::Moving</span> <span class="op">=</span><span class="op">&gt;</span> <span class="ident">cs</span>.<span class="ident">rotating_color_agents</span>(<span class="ident">input</span>.<span class="ident">id</span>.<span class="ident">id</span>),
            <span class="ident">CarStatus::Parked</span> <span class="op">=</span><span class="op">&gt;</span> <span class="ident">cs</span>.<span class="ident">parked_car</span>,
        };
        <span class="ident">grey_out_unhighlighted_people</span>(<span class="ident">color</span>, <span class="kw-2">&amp;</span><span class="ident">input</span>.<span class="ident">person</span>, <span class="ident">sim</span>)
    }
}
</pre></div>
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