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</pre><pre class="rust"><code><span class="kw">use</span> <span class="ident">std::collections::HashSet</span>;

<span class="kw">use</span> <span class="ident">abstutil::prettyprint_usize</span>;
<span class="kw">use</span> <span class="ident">geom</span>::{<span class="ident">Circle</span>, <span class="ident">Distance</span>, <span class="ident">Duration</span>, <span class="ident">Percent</span>, <span class="ident">Polygon</span>, <span class="ident">Pt2D</span>, <span class="ident">Time</span>, <span class="ident">UnitFmt</span>};

<span class="kw">use</span> <span class="kw">crate</span>::{<span class="ident">Color</span>, <span class="ident">EventCtx</span>, <span class="ident">GeomBatch</span>, <span class="ident">ScreenDims</span>, <span class="ident">TextExt</span>, <span class="ident">Toggle</span>, <span class="ident">Widget</span>};

<span class="attribute">#[<span class="ident">derive</span>(<span class="ident">Default</span>)]</span>
<span class="kw">pub</span> <span class="kw">struct</span> <span class="ident">PlotOptions</span><span class="op">&lt;</span><span class="ident">X</span>: <span class="ident">Axis</span><span class="op">&lt;</span><span class="ident">X</span><span class="op">&gt;</span>, <span class="ident">Y</span>: <span class="ident">Axis</span><span class="op">&lt;</span><span class="ident">Y</span><span class="op">&gt;</span><span class="op">&gt;</span> {
    <span class="kw">pub</span> <span class="ident">filterable</span>: <span class="ident">bool</span>,
    <span class="kw">pub</span> <span class="ident">max_x</span>: <span class="prelude-ty">Option</span><span class="op">&lt;</span><span class="ident">X</span><span class="op">&gt;</span>,
    <span class="kw">pub</span> <span class="ident">max_y</span>: <span class="prelude-ty">Option</span><span class="op">&lt;</span><span class="ident">Y</span><span class="op">&gt;</span>,
    <span class="kw">pub</span> <span class="ident">disabled</span>: <span class="ident">HashSet</span><span class="op">&lt;</span><span class="ident">String</span><span class="op">&gt;</span>,
    <span class="kw">pub</span> <span class="ident">dims</span>: <span class="prelude-ty">Option</span><span class="op">&lt;</span><span class="ident">ScreenDims</span><span class="op">&gt;</span>,
}

<span class="kw">impl</span><span class="op">&lt;</span><span class="ident">X</span>: <span class="ident">Axis</span><span class="op">&lt;</span><span class="ident">X</span><span class="op">&gt;</span>, <span class="ident">Y</span>: <span class="ident">Axis</span><span class="op">&lt;</span><span class="ident">Y</span><span class="op">&gt;</span><span class="op">&gt;</span> <span class="ident">PlotOptions</span><span class="op">&lt;</span><span class="ident">X</span>, <span class="ident">Y</span><span class="op">&gt;</span> {
    <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">filterable</span>() -&gt; <span class="ident">PlotOptions</span><span class="op">&lt;</span><span class="ident">X</span>, <span class="ident">Y</span><span class="op">&gt;</span> {
        <span class="ident">PlotOptions</span> {
            <span class="ident">filterable</span>: <span class="bool-val">true</span>,
            ..<span class="ident">Default::default</span>()
        }
    }

    <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">fixed</span>() -&gt; <span class="ident">PlotOptions</span><span class="op">&lt;</span><span class="ident">X</span>, <span class="ident">Y</span><span class="op">&gt;</span> {
        <span class="ident">PlotOptions</span> {
            <span class="ident">filterable</span>: <span class="bool-val">false</span>,
            ..<span class="ident">Default::default</span>()
        }
    }
}

<span class="kw">pub</span> <span class="kw">trait</span> <span class="ident">Axis</span><span class="op">&lt;</span><span class="ident">T</span><span class="op">&gt;</span>: <span class="lifetime">&#39;static</span> <span class="op">+</span> <span class="ident">Copy</span> <span class="op">+</span> <span class="ident">std::cmp::Ord</span> <span class="op">+</span> <span class="ident">Default</span> {
    <span class="comment">// percent is [0.0, 1.0]</span>
    <span class="kw">fn</span> <span class="ident">from_percent</span>(<span class="kw-2">&amp;</span><span class="self">self</span>, <span class="ident">percent</span>: <span class="ident">f64</span>) -&gt; <span class="ident">T</span>;
    <span class="kw">fn</span> <span class="ident">to_percent</span>(<span class="self">self</span>, <span class="ident">max</span>: <span class="ident">T</span>) -&gt; <span class="ident">f64</span>;
    <span class="kw">fn</span> <span class="ident">prettyprint</span>(<span class="self">self</span>, <span class="ident">unit_fmt</span>: <span class="kw-2">&amp;</span><span class="ident">UnitFmt</span>) -&gt; <span class="ident">String</span>;
    <span class="comment">// For order of magnitude calculations</span>
    <span class="kw">fn</span> <span class="ident">to_f64</span>(<span class="self">self</span>) -&gt; <span class="ident">f64</span>;
    <span class="kw">fn</span> <span class="ident">from_f64</span>(<span class="kw-2">&amp;</span><span class="self">self</span>, <span class="ident">x</span>: <span class="ident">f64</span>) -&gt; <span class="ident">T</span>;
    <span class="kw">fn</span> <span class="ident">zero</span>() -&gt; <span class="ident">T</span>;
}

<span class="kw">impl</span> <span class="ident">Axis</span><span class="op">&lt;</span><span class="ident">usize</span><span class="op">&gt;</span> <span class="kw">for</span> <span class="ident">usize</span> {
    <span class="kw">fn</span> <span class="ident">from_percent</span>(<span class="kw-2">&amp;</span><span class="self">self</span>, <span class="ident">percent</span>: <span class="ident">f64</span>) -&gt; <span class="ident">usize</span> {
        ((<span class="kw-2">*</span><span class="self">self</span> <span class="kw">as</span> <span class="ident">f64</span>) <span class="op">*</span> <span class="ident">percent</span>) <span class="kw">as</span> <span class="ident">usize</span>
    }
    <span class="kw">fn</span> <span class="ident">to_percent</span>(<span class="self">self</span>, <span class="ident">max</span>: <span class="ident">usize</span>) -&gt; <span class="ident">f64</span> {
        <span class="kw">if</span> <span class="ident">max</span> <span class="op">==</span> <span class="number">0</span> {
            <span class="number">0.0</span>
        } <span class="kw">else</span> {
            (<span class="self">self</span> <span class="kw">as</span> <span class="ident">f64</span>) <span class="op">/</span> (<span class="ident">max</span> <span class="kw">as</span> <span class="ident">f64</span>)
        }
    }
    <span class="kw">fn</span> <span class="ident">prettyprint</span>(<span class="self">self</span>, <span class="kw">_</span>: <span class="kw-2">&amp;</span><span class="ident">UnitFmt</span>) -&gt; <span class="ident">String</span> {
        <span class="ident">prettyprint_usize</span>(<span class="self">self</span>)
    }
    <span class="kw">fn</span> <span class="ident">to_f64</span>(<span class="self">self</span>) -&gt; <span class="ident">f64</span> {
        <span class="self">self</span> <span class="kw">as</span> <span class="ident">f64</span>
    }
    <span class="kw">fn</span> <span class="ident">from_f64</span>(<span class="kw-2">&amp;</span><span class="self">self</span>, <span class="ident">x</span>: <span class="ident">f64</span>) -&gt; <span class="ident">usize</span> {
        <span class="ident">x</span> <span class="kw">as</span> <span class="ident">usize</span>
    }
    <span class="kw">fn</span> <span class="ident">zero</span>() -&gt; <span class="ident">usize</span> {
        <span class="number">0</span>
    }
}

<span class="kw">impl</span> <span class="ident">Axis</span><span class="op">&lt;</span><span class="ident">Duration</span><span class="op">&gt;</span> <span class="kw">for</span> <span class="ident">Duration</span> {
    <span class="kw">fn</span> <span class="ident">from_percent</span>(<span class="kw-2">&amp;</span><span class="self">self</span>, <span class="ident">percent</span>: <span class="ident">f64</span>) -&gt; <span class="ident">Duration</span> {
        <span class="kw-2">*</span><span class="self">self</span> <span class="op">*</span> <span class="ident">percent</span>
    }
    <span class="kw">fn</span> <span class="ident">to_percent</span>(<span class="self">self</span>, <span class="ident">max</span>: <span class="ident">Duration</span>) -&gt; <span class="ident">f64</span> {
        <span class="kw">if</span> <span class="ident">max</span> <span class="op">==</span> <span class="ident">Duration::ZERO</span> {
            <span class="number">0.0</span>
        } <span class="kw">else</span> {
            <span class="self">self</span> <span class="op">/</span> <span class="ident">max</span>
        }
    }
    <span class="kw">fn</span> <span class="ident">prettyprint</span>(<span class="self">self</span>, <span class="kw">_</span>: <span class="kw-2">&amp;</span><span class="ident">UnitFmt</span>) -&gt; <span class="ident">String</span> {
        <span class="self">self</span>.<span class="ident">to_string</span>(<span class="kw-2">&amp;</span><span class="ident">UnitFmt</span> {
            <span class="ident">metric</span>: <span class="bool-val">false</span>,
            <span class="ident">round_durations</span>: <span class="bool-val">true</span>,
        })
    }
    <span class="kw">fn</span> <span class="ident">to_f64</span>(<span class="self">self</span>) -&gt; <span class="ident">f64</span> {
        <span class="self">self</span>.<span class="ident">inner_seconds</span>() <span class="kw">as</span> <span class="ident">f64</span>
    }
    <span class="kw">fn</span> <span class="ident">from_f64</span>(<span class="kw-2">&amp;</span><span class="self">self</span>, <span class="ident">x</span>: <span class="ident">f64</span>) -&gt; <span class="ident">Duration</span> {
        <span class="ident">Duration::seconds</span>(<span class="ident">x</span> <span class="kw">as</span> <span class="ident">f64</span>)
    }
    <span class="kw">fn</span> <span class="ident">zero</span>() -&gt; <span class="ident">Duration</span> {
        <span class="ident">Duration::ZERO</span>
    }
}

<span class="kw">impl</span> <span class="ident">Axis</span><span class="op">&lt;</span><span class="ident">Time</span><span class="op">&gt;</span> <span class="kw">for</span> <span class="ident">Time</span> {
    <span class="kw">fn</span> <span class="ident">from_percent</span>(<span class="kw-2">&amp;</span><span class="self">self</span>, <span class="ident">percent</span>: <span class="ident">f64</span>) -&gt; <span class="ident">Time</span> {
        <span class="self">self</span>.<span class="ident">percent_of</span>(<span class="ident">percent</span>)
    }
    <span class="kw">fn</span> <span class="ident">to_percent</span>(<span class="self">self</span>, <span class="ident">max</span>: <span class="ident">Time</span>) -&gt; <span class="ident">f64</span> {
        <span class="kw">if</span> <span class="ident">max</span> <span class="op">==</span> <span class="ident">Time::START_OF_DAY</span> {
            <span class="number">0.0</span>
        } <span class="kw">else</span> {
            <span class="self">self</span>.<span class="ident">to_percent</span>(<span class="ident">max</span>)
        }
    }
    <span class="kw">fn</span> <span class="ident">prettyprint</span>(<span class="self">self</span>, <span class="kw">_</span>: <span class="kw-2">&amp;</span><span class="ident">UnitFmt</span>) -&gt; <span class="ident">String</span> {
        <span class="self">self</span>.<span class="ident">ampm_tostring</span>()
    }
    <span class="kw">fn</span> <span class="ident">to_f64</span>(<span class="self">self</span>) -&gt; <span class="ident">f64</span> {
        <span class="self">self</span>.<span class="ident">inner_seconds</span>() <span class="kw">as</span> <span class="ident">f64</span>
    }
    <span class="kw">fn</span> <span class="ident">from_f64</span>(<span class="kw-2">&amp;</span><span class="self">self</span>, <span class="ident">x</span>: <span class="ident">f64</span>) -&gt; <span class="ident">Time</span> {
        <span class="ident">Time::START_OF_DAY</span> <span class="op">+</span> <span class="ident">Duration::seconds</span>(<span class="ident">x</span> <span class="kw">as</span> <span class="ident">f64</span>)
    }
    <span class="kw">fn</span> <span class="ident">zero</span>() -&gt; <span class="ident">Time</span> {
        <span class="ident">Time::START_OF_DAY</span>
    }
}

<span class="kw">impl</span> <span class="ident">Axis</span><span class="op">&lt;</span><span class="ident">Distance</span><span class="op">&gt;</span> <span class="kw">for</span> <span class="ident">Distance</span> {
    <span class="kw">fn</span> <span class="ident">from_percent</span>(<span class="kw-2">&amp;</span><span class="self">self</span>, <span class="ident">percent</span>: <span class="ident">f64</span>) -&gt; <span class="ident">Distance</span> {
        <span class="kw-2">*</span><span class="self">self</span> <span class="op">*</span> <span class="ident">percent</span>
    }
    <span class="kw">fn</span> <span class="ident">to_percent</span>(<span class="self">self</span>, <span class="ident">max</span>: <span class="ident">Distance</span>) -&gt; <span class="ident">f64</span> {
        <span class="kw">if</span> <span class="ident">max</span> <span class="op">==</span> <span class="ident">Distance::ZERO</span> {
            <span class="number">0.0</span>
        } <span class="kw">else</span> {
            <span class="self">self</span> <span class="op">/</span> <span class="ident">max</span>
        }
    }
    <span class="kw">fn</span> <span class="ident">prettyprint</span>(<span class="self">self</span>, <span class="ident">unit_fmt</span>: <span class="kw-2">&amp;</span><span class="ident">UnitFmt</span>) -&gt; <span class="ident">String</span> {
        <span class="self">self</span>.<span class="ident">to_string</span>(<span class="ident">unit_fmt</span>)
    }
    <span class="kw">fn</span> <span class="ident">to_f64</span>(<span class="self">self</span>) -&gt; <span class="ident">f64</span> {
        <span class="self">self</span>.<span class="ident">inner_meters</span>() <span class="kw">as</span> <span class="ident">f64</span>
    }
    <span class="kw">fn</span> <span class="ident">from_f64</span>(<span class="kw-2">&amp;</span><span class="self">self</span>, <span class="ident">x</span>: <span class="ident">f64</span>) -&gt; <span class="ident">Distance</span> {
        <span class="ident">Distance::meters</span>(<span class="ident">x</span> <span class="kw">as</span> <span class="ident">f64</span>)
    }
    <span class="kw">fn</span> <span class="ident">zero</span>() -&gt; <span class="ident">Distance</span> {
        <span class="ident">Distance::ZERO</span>
    }
}

<span class="kw">pub</span> <span class="kw">struct</span> <span class="ident">Series</span><span class="op">&lt;</span><span class="ident">X</span>, <span class="ident">Y</span><span class="op">&gt;</span> {
    <span class="kw">pub</span> <span class="ident">label</span>: <span class="ident">String</span>,
    <span class="kw">pub</span> <span class="ident">color</span>: <span class="ident">Color</span>,
    <span class="comment">// Assume this is sorted by X.</span>
    <span class="kw">pub</span> <span class="ident">pts</span>: <span class="ident">Vec</span><span class="op">&lt;</span>(<span class="ident">X</span>, <span class="ident">Y</span>)<span class="op">&gt;</span>,
}

<span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">make_legend</span><span class="op">&lt;</span><span class="ident">X</span>: <span class="ident">Axis</span><span class="op">&lt;</span><span class="ident">X</span><span class="op">&gt;</span>, <span class="ident">Y</span>: <span class="ident">Axis</span><span class="op">&lt;</span><span class="ident">Y</span><span class="op">&gt;</span><span class="op">&gt;</span>(
    <span class="ident">ctx</span>: <span class="kw-2">&amp;</span><span class="ident">EventCtx</span>,
    <span class="ident">series</span>: <span class="kw-2">&amp;</span>[<span class="ident">Series</span><span class="op">&lt;</span><span class="ident">X</span>, <span class="ident">Y</span><span class="op">&gt;</span>],
    <span class="ident">opts</span>: <span class="kw-2">&amp;</span><span class="ident">PlotOptions</span><span class="op">&lt;</span><span class="ident">X</span>, <span class="ident">Y</span><span class="op">&gt;</span>,
) -&gt; <span class="ident">Widget</span> {
    <span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">row</span> <span class="op">=</span> <span class="ident">Vec::new</span>();
    <span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">seen</span> <span class="op">=</span> <span class="ident">HashSet::new</span>();
    <span class="kw">for</span> <span class="ident">s</span> <span class="kw">in</span> <span class="ident">series</span> {
        <span class="kw">if</span> <span class="ident">seen</span>.<span class="ident">contains</span>(<span class="kw-2">&amp;</span><span class="ident">s</span>.<span class="ident">label</span>) {
            <span class="kw">continue</span>;
        }
        <span class="ident">seen</span>.<span class="ident">insert</span>(<span class="ident">s</span>.<span class="ident">label</span>.<span class="ident">clone</span>());
        <span class="kw">if</span> <span class="ident">opts</span>.<span class="ident">filterable</span> {
            <span class="ident">row</span>.<span class="ident">push</span>(<span class="ident">Toggle::colored_checkbox</span>(
                <span class="ident">ctx</span>,
                <span class="kw-2">&amp;</span><span class="ident">s</span>.<span class="ident">label</span>,
                <span class="ident">s</span>.<span class="ident">color</span>,
                <span class="op">!</span><span class="ident">opts</span>.<span class="ident">disabled</span>.<span class="ident">contains</span>(<span class="kw-2">&amp;</span><span class="ident">s</span>.<span class="ident">label</span>),
            ));
        } <span class="kw">else</span> {
            <span class="kw">let</span> <span class="ident">radius</span> <span class="op">=</span> <span class="number">15.0</span>;
            <span class="ident">row</span>.<span class="ident">push</span>(<span class="ident">Widget::row</span>(<span class="macro">vec!</span>[
                <span class="ident">GeomBatch::from</span>(<span class="macro">vec!</span>[(
                    <span class="ident">s</span>.<span class="ident">color</span>,
                    <span class="ident">Circle::new</span>(<span class="ident">Pt2D::new</span>(<span class="ident">radius</span>, <span class="ident">radius</span>), <span class="ident">Distance::meters</span>(<span class="ident">radius</span>)).<span class="ident">to_polygon</span>(),
                )])
                .<span class="ident">into_widget</span>(<span class="ident">ctx</span>),
                <span class="ident">s</span>.<span class="ident">label</span>.<span class="ident">clone</span>().<span class="ident">text_widget</span>(<span class="ident">ctx</span>),
            ]));
        }
    }
    <span class="kw">match</span> <span class="ident">opts</span>.<span class="ident">dims</span> {
        <span class="prelude-val">Some</span>(<span class="ident">ScreenDims</span> { <span class="ident">width</span>, .. }) =&gt; <span class="ident">Widget::custom_row</span>(<span class="ident">row</span>).<span class="ident">force_width</span>(<span class="ident">width</span>),
        <span class="kw">_</span> =&gt; <span class="ident">Widget::custom_row</span>(<span class="ident">row</span>).<span class="ident">flex_wrap</span>(<span class="ident">ctx</span>, <span class="ident">Percent::int</span>(<span class="number">24</span>)),
    }
}

<span class="comment">// TODO If this proves useful, lift to geom</span>
<span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">thick_lineseries</span>(<span class="ident">pts</span>: <span class="ident">Vec</span><span class="op">&lt;</span><span class="ident">Pt2D</span><span class="op">&gt;</span>, <span class="ident">width</span>: <span class="ident">Distance</span>) -&gt; <span class="ident">Polygon</span> {
    <span class="kw">use</span> <span class="ident">lyon::math</span>::{<span class="ident">point</span>, <span class="ident">Point</span>};
    <span class="kw">use</span> <span class="ident">lyon::path::Path</span>;
    <span class="kw">use</span> <span class="ident">lyon::tessellation::geometry_builder</span>::{<span class="ident">BuffersBuilder</span>, <span class="ident">Positions</span>, <span class="ident">VertexBuffers</span>};
    <span class="kw">use</span> <span class="ident">lyon::tessellation</span>::{<span class="ident">StrokeOptions</span>, <span class="ident">StrokeTessellator</span>};

    <span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">builder</span> <span class="op">=</span> <span class="ident">Path::builder</span>();
    <span class="kw">for</span> (<span class="ident">idx</span>, <span class="ident">pt</span>) <span class="kw">in</span> <span class="ident">pts</span>.<span class="ident">into_iter</span>().<span class="ident">enumerate</span>() {
        <span class="kw">let</span> <span class="ident">pt</span> <span class="op">=</span> <span class="ident">point</span>(<span class="ident">pt</span>.<span class="ident">x</span>() <span class="kw">as</span> <span class="ident">f32</span>, <span class="ident">pt</span>.<span class="ident">y</span>() <span class="kw">as</span> <span class="ident">f32</span>);
        <span class="kw">if</span> <span class="ident">idx</span> <span class="op">==</span> <span class="number">0</span> {
            <span class="ident">builder</span>.<span class="ident">move_to</span>(<span class="ident">pt</span>);
        } <span class="kw">else</span> {
            <span class="ident">builder</span>.<span class="ident">line_to</span>(<span class="ident">pt</span>);
        }
    }
    <span class="kw">let</span> <span class="ident">path</span> <span class="op">=</span> <span class="ident">builder</span>.<span class="ident">build</span>();

    <span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">geom</span>: <span class="ident">VertexBuffers</span><span class="op">&lt;</span><span class="ident">Point</span>, <span class="ident">u32</span><span class="op">&gt;</span> <span class="op">=</span> <span class="ident">VertexBuffers::new</span>();
    <span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">buffer</span> <span class="op">=</span> <span class="ident">BuffersBuilder::new</span>(<span class="kw-2">&amp;mut</span> <span class="ident">geom</span>, <span class="ident">Positions</span>);
    <span class="ident">StrokeTessellator::new</span>()
        .<span class="ident">tessellate</span>(
            <span class="kw-2">&amp;</span><span class="ident">path</span>,
            <span class="kw-2">&amp;</span><span class="ident">StrokeOptions::tolerance</span>(<span class="number">0.01</span>).<span class="ident">with_line_width</span>(<span class="ident">width</span>.<span class="ident">inner_meters</span>() <span class="kw">as</span> <span class="ident">f32</span>),
            <span class="kw-2">&amp;mut</span> <span class="ident">buffer</span>,
        )
        .<span class="ident">unwrap</span>();
    <span class="ident">Polygon::precomputed</span>(
        <span class="ident">geom</span>.<span class="ident">vertices</span>
            .<span class="ident">into_iter</span>()
            .<span class="ident">map</span>(<span class="op">|</span><span class="ident">v</span><span class="op">|</span> <span class="ident">Pt2D::new</span>(<span class="ident">f64::from</span>(<span class="ident">v</span>.<span class="ident">x</span>), <span class="ident">f64::from</span>(<span class="ident">v</span>.<span class="ident">y</span>)))
            .<span class="ident">collect</span>(),
        <span class="ident">geom</span>.<span class="ident">indices</span>.<span class="ident">into_iter</span>().<span class="ident">map</span>(<span class="op">|</span><span class="ident">idx</span><span class="op">|</span> <span class="ident">idx</span> <span class="kw">as</span> <span class="ident">usize</span>).<span class="ident">collect</span>(),
    )
}
</code></pre></div>
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