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<title>Graphics/Rendering/Chart/Plot/FillBetween.hs</title>
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<pre><a name="line-1"></a><span class='hs-comment'>-----------------------------------------------------------------------------</span>
<a name="line-2"></a><span class='hs-comment'>-- |</span>
<a name="line-3"></a><span class='hs-comment'>-- Module : Graphics.Rendering.Chart.Plot.FillBetween</span>
<a name="line-4"></a><span class='hs-comment'>-- Copyright : (c) Tim Docker 2006, 2014</span>
<a name="line-5"></a><span class='hs-comment'>-- License : BSD-style (see chart/COPYRIGHT)</span>
<a name="line-6"></a><span class='hs-comment'>--</span>
<a name="line-7"></a><span class='hs-comment'>-- Plots that fill the area between two lines.</span>
<a name="line-8"></a><span class='hs-comment'>--</span>
<a name="line-9"></a><span class='hs-comment'>{-# LANGUAGE TemplateHaskell #-}</span>
<a name="line-10"></a>
<a name="line-11"></a><span class='hs-keyword'>module</span> <span class='hs-conid'>Graphics</span><span class='hs-varop'>.</span><span class='hs-conid'>Rendering</span><span class='hs-varop'>.</span><span class='hs-conid'>Chart</span><span class='hs-varop'>.</span><span class='hs-conid'>Plot</span><span class='hs-varop'>.</span><span class='hs-conid'>FillBetween</span><span class='hs-layout'>(</span>
<a name="line-12"></a> <span class='hs-conid'>PlotFillBetween</span><span class='hs-layout'>(</span><span class='hs-keyglyph'>..</span><span class='hs-layout'>)</span><span class='hs-layout'>,</span>
<a name="line-13"></a>
<a name="line-14"></a> <span class='hs-comment'>-- * Accessors</span>
<a name="line-15"></a> <span class='hs-comment'>-- | These accessors are generated by template haskell</span>
<a name="line-16"></a> <span class='hs-varid'>plot_fillbetween_title</span><span class='hs-layout'>,</span>
<a name="line-17"></a> <span class='hs-varid'>plot_fillbetween_style</span><span class='hs-layout'>,</span>
<a name="line-18"></a> <span class='hs-varid'>plot_fillbetween_values</span><span class='hs-layout'>,</span>
<a name="line-19"></a><span class='hs-layout'>)</span> <span class='hs-keyword'>where</span>
<a name="line-20"></a>
<a name="line-21"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Control</span><span class='hs-varop'>.</span><span class='hs-conid'>Lens</span>
<a name="line-22"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Graphics</span><span class='hs-varop'>.</span><span class='hs-conid'>Rendering</span><span class='hs-varop'>.</span><span class='hs-conid'>Chart</span><span class='hs-varop'>.</span><span class='hs-conid'>Geometry</span>
<a name="line-23"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Graphics</span><span class='hs-varop'>.</span><span class='hs-conid'>Rendering</span><span class='hs-varop'>.</span><span class='hs-conid'>Chart</span><span class='hs-varop'>.</span><span class='hs-conid'>Drawing</span>
<a name="line-24"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Graphics</span><span class='hs-varop'>.</span><span class='hs-conid'>Rendering</span><span class='hs-varop'>.</span><span class='hs-conid'>Chart</span><span class='hs-varop'>.</span><span class='hs-conid'>Plot</span><span class='hs-varop'>.</span><span class='hs-conid'>Types</span>
<a name="line-25"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Data</span><span class='hs-varop'>.</span><span class='hs-conid'>Colour</span> <span class='hs-layout'>(</span><span class='hs-varid'>opaque</span><span class='hs-layout'>)</span>
<a name="line-26"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Data</span><span class='hs-varop'>.</span><span class='hs-conid'>Colour</span><span class='hs-varop'>.</span><span class='hs-conid'>SRGB</span> <span class='hs-layout'>(</span><span class='hs-varid'>sRGB</span><span class='hs-layout'>)</span>
<a name="line-27"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Data</span><span class='hs-varop'>.</span><span class='hs-conid'>Default</span><span class='hs-varop'>.</span><span class='hs-conid'>Class</span>
<a name="line-28"></a>
<a name="line-29"></a><span class='hs-comment'>-- | Value specifying a plot filling the area between two sets of Y</span>
<a name="line-30"></a><span class='hs-comment'>-- coordinates, given common X coordinates.</span>
<a name="line-31"></a>
<a name="line-32"></a><a name="PlotFillBetween"></a><span class='hs-keyword'>data</span> <span class='hs-conid'>PlotFillBetween</span> <span class='hs-varid'>x</span> <span class='hs-varid'>y</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>PlotFillBetween</span> <span class='hs-layout'>{</span>
<a name="line-33"></a> <span class='hs-sel'>_plot_fillbetween_title</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>String</span><span class='hs-layout'>,</span>
<a name="line-34"></a> <span class='hs-sel'>_plot_fillbetween_style</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>FillStyle</span><span class='hs-layout'>,</span>
<a name="line-35"></a> <span class='hs-sel'>_plot_fillbetween_values</span> <span class='hs-keyglyph'>::</span> <span class='hs-keyglyph'>[</span> <span class='hs-layout'>(</span><span class='hs-varid'>x</span><span class='hs-layout'>,</span> <span class='hs-layout'>(</span><span class='hs-varid'>y</span><span class='hs-layout'>,</span><span class='hs-varid'>y</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span><span class='hs-keyglyph'>]</span>
<a name="line-36"></a><span class='hs-layout'>}</span>
<a name="line-37"></a>
<a name="line-38"></a>
<a name="line-39"></a><a name="instance%20ToPlot%20PlotFillBetween"></a><span class='hs-keyword'>instance</span> <span class='hs-conid'>ToPlot</span> <span class='hs-conid'>PlotFillBetween</span> <span class='hs-keyword'>where</span>
<a name="line-40"></a> <span class='hs-varid'>toPlot</span> <span class='hs-varid'>p</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Plot</span> <span class='hs-layout'>{</span>
<a name="line-41"></a> <span class='hs-sel'>_plot_render</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>renderPlotFillBetween</span> <span class='hs-varid'>p</span><span class='hs-layout'>,</span>
<a name="line-42"></a> <span class='hs-sel'>_plot_legend</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyglyph'>[</span><span class='hs-layout'>(</span><span class='hs-sel'>_plot_fillbetween_title</span> <span class='hs-varid'>p</span><span class='hs-layout'>,</span><span class='hs-varid'>renderPlotLegendFill</span> <span class='hs-varid'>p</span><span class='hs-layout'>)</span><span class='hs-keyglyph'>]</span><span class='hs-layout'>,</span>
<a name="line-43"></a> <span class='hs-sel'>_plot_all_points</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>plotAllPointsFillBetween</span> <span class='hs-varid'>p</span>
<a name="line-44"></a> <span class='hs-layout'>}</span>
<a name="line-45"></a>
<a name="line-46"></a><a name="renderPlotFillBetween"></a><span class='hs-definition'>renderPlotFillBetween</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>PlotFillBetween</span> <span class='hs-varid'>x</span> <span class='hs-varid'>y</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>PointMapFn</span> <span class='hs-varid'>x</span> <span class='hs-varid'>y</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>ChartBackend</span> <span class='hs-conid'>()</span>
<a name="line-47"></a><span class='hs-definition'>renderPlotFillBetween</span> <span class='hs-varid'>p</span> <span class='hs-keyglyph'>=</span>
<a name="line-48"></a> <span class='hs-varid'>renderPlotFillBetween'</span> <span class='hs-varid'>p</span> <span class='hs-layout'>(</span><span class='hs-sel'>_plot_fillbetween_values</span> <span class='hs-varid'>p</span><span class='hs-layout'>)</span>
<a name="line-49"></a>
<a name="line-50"></a><a name="renderPlotFillBetween'"></a><span class='hs-definition'>renderPlotFillBetween'</span> <span class='hs-keyglyph'>::</span>
<a name="line-51"></a> <span class='hs-conid'>PlotFillBetween</span> <span class='hs-varid'>x</span> <span class='hs-varid'>y</span>
<a name="line-52"></a> <span class='hs-keyglyph'>-></span> <span class='hs-keyglyph'>[</span><span class='hs-layout'>(</span><span class='hs-varid'>a</span><span class='hs-layout'>,</span> <span class='hs-layout'>(</span><span class='hs-varid'>b</span><span class='hs-layout'>,</span> <span class='hs-varid'>b</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span><span class='hs-keyglyph'>]</span>
<a name="line-53"></a> <span class='hs-keyglyph'>-></span> <span class='hs-layout'>(</span><span class='hs-layout'>(</span><span class='hs-conid'>Limit</span> <span class='hs-varid'>a</span><span class='hs-layout'>,</span> <span class='hs-conid'>Limit</span> <span class='hs-varid'>b</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Point</span><span class='hs-layout'>)</span>
<a name="line-54"></a> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>ChartBackend</span> <span class='hs-conid'>()</span>
<a name="line-55"></a><span class='hs-definition'>renderPlotFillBetween'</span> <span class='hs-keyword'>_</span> <span class='hs-conid'>[]</span> <span class='hs-keyword'>_</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>return</span> <span class='hs-conid'>()</span>
<a name="line-56"></a><span class='hs-definition'>renderPlotFillBetween'</span> <span class='hs-varid'>p</span> <span class='hs-varid'>vs</span> <span class='hs-varid'>pmap</span> <span class='hs-keyglyph'>=</span>
<a name="line-57"></a> <span class='hs-varid'>withFillStyle</span> <span class='hs-layout'>(</span><span class='hs-sel'>_plot_fillbetween_style</span> <span class='hs-varid'>p</span><span class='hs-layout'>)</span> <span class='hs-varop'>$</span> <span class='hs-keyword'>do</span>
<a name="line-58"></a> <span class='hs-varid'>ps</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>alignFillPoints</span> <span class='hs-varop'>$</span> <span class='hs-keyglyph'>[</span><span class='hs-varid'>p0</span><span class='hs-keyglyph'>]</span> <span class='hs-varop'>++</span> <span class='hs-varid'>p1s</span> <span class='hs-varop'>++</span> <span class='hs-varid'>reverse</span> <span class='hs-varid'>p2s</span> <span class='hs-varop'>++</span> <span class='hs-keyglyph'>[</span><span class='hs-varid'>p0</span><span class='hs-keyglyph'>]</span>
<a name="line-59"></a> <span class='hs-varid'>fillPointPath</span> <span class='hs-varid'>ps</span>
<a name="line-60"></a> <span class='hs-keyword'>where</span>
<a name="line-61"></a> <span class='hs-varid'>pmap'</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>mapXY</span> <span class='hs-varid'>pmap</span>
<a name="line-62"></a> <span class='hs-layout'>(</span><span class='hs-varid'>p0</span><span class='hs-conop'>:</span><span class='hs-varid'>p1s</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>map</span> <span class='hs-varid'>pmap'</span> <span class='hs-keyglyph'>[</span> <span class='hs-layout'>(</span><span class='hs-varid'>x</span><span class='hs-layout'>,</span><span class='hs-varid'>y1</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>|</span> <span class='hs-layout'>(</span><span class='hs-varid'>x</span><span class='hs-layout'>,</span><span class='hs-layout'>(</span><span class='hs-varid'>y1</span><span class='hs-layout'>,</span><span class='hs-keyword'>_</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>vs</span> <span class='hs-keyglyph'>]</span>
<a name="line-63"></a> <span class='hs-varid'>p2s</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>map</span> <span class='hs-varid'>pmap'</span> <span class='hs-keyglyph'>[</span> <span class='hs-layout'>(</span><span class='hs-varid'>x</span><span class='hs-layout'>,</span><span class='hs-varid'>y2</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>|</span> <span class='hs-layout'>(</span><span class='hs-varid'>x</span><span class='hs-layout'>,</span><span class='hs-layout'>(</span><span class='hs-keyword'>_</span><span class='hs-layout'>,</span><span class='hs-varid'>y2</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>vs</span> <span class='hs-keyglyph'>]</span>
<a name="line-64"></a>
<a name="line-65"></a><a name="renderPlotLegendFill"></a><span class='hs-definition'>renderPlotLegendFill</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>PlotFillBetween</span> <span class='hs-varid'>x</span> <span class='hs-varid'>y</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Rect</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>ChartBackend</span> <span class='hs-conid'>()</span>
<a name="line-66"></a><span class='hs-definition'>renderPlotLegendFill</span> <span class='hs-varid'>p</span> <span class='hs-varid'>r</span> <span class='hs-keyglyph'>=</span>
<a name="line-67"></a> <span class='hs-varid'>withFillStyle</span> <span class='hs-layout'>(</span><span class='hs-sel'>_plot_fillbetween_style</span> <span class='hs-varid'>p</span><span class='hs-layout'>)</span> <span class='hs-varop'>$</span>
<a name="line-68"></a> <span class='hs-varid'>fillPath</span> <span class='hs-layout'>(</span><span class='hs-varid'>rectPath</span> <span class='hs-varid'>r</span><span class='hs-layout'>)</span>
<a name="line-69"></a>
<a name="line-70"></a><a name="plotAllPointsFillBetween"></a><span class='hs-definition'>plotAllPointsFillBetween</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>PlotFillBetween</span> <span class='hs-varid'>x</span> <span class='hs-varid'>y</span> <span class='hs-keyglyph'>-></span> <span class='hs-layout'>(</span><span class='hs-keyglyph'>[</span><span class='hs-varid'>x</span><span class='hs-keyglyph'>]</span><span class='hs-layout'>,</span><span class='hs-keyglyph'>[</span><span class='hs-varid'>y</span><span class='hs-keyglyph'>]</span><span class='hs-layout'>)</span>
<a name="line-71"></a><span class='hs-definition'>plotAllPointsFillBetween</span> <span class='hs-varid'>p</span> <span class='hs-keyglyph'>=</span> <span class='hs-layout'>(</span> <span class='hs-keyglyph'>[</span> <span class='hs-varid'>x</span> <span class='hs-keyglyph'>|</span> <span class='hs-layout'>(</span><span class='hs-varid'>x</span><span class='hs-layout'>,</span><span class='hs-layout'>(</span><span class='hs-keyword'>_</span><span class='hs-layout'>,</span><span class='hs-keyword'>_</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>pts</span> <span class='hs-keyglyph'>]</span>
<a name="line-72"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>concat</span> <span class='hs-keyglyph'>[</span> <span class='hs-keyglyph'>[</span><span class='hs-varid'>y1</span><span class='hs-layout'>,</span><span class='hs-varid'>y2</span><span class='hs-keyglyph'>]</span> <span class='hs-keyglyph'>|</span> <span class='hs-layout'>(</span><span class='hs-keyword'>_</span><span class='hs-layout'>,</span><span class='hs-layout'>(</span><span class='hs-varid'>y1</span><span class='hs-layout'>,</span><span class='hs-varid'>y2</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>pts</span> <span class='hs-keyglyph'>]</span> <span class='hs-layout'>)</span>
<a name="line-73"></a> <span class='hs-keyword'>where</span>
<a name="line-74"></a> <span class='hs-varid'>pts</span> <span class='hs-keyglyph'>=</span> <span class='hs-sel'>_plot_fillbetween_values</span> <span class='hs-varid'>p</span>
<a name="line-75"></a>
<a name="line-76"></a><a name="instance%20Default%20(PlotFillBetween%20x%20y)"></a><span class='hs-keyword'>instance</span> <span class='hs-conid'>Default</span> <span class='hs-layout'>(</span><span class='hs-conid'>PlotFillBetween</span> <span class='hs-varid'>x</span> <span class='hs-varid'>y</span><span class='hs-layout'>)</span> <span class='hs-keyword'>where</span>
<a name="line-77"></a> <span class='hs-varid'>def</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>PlotFillBetween</span>
<a name="line-78"></a> <span class='hs-layout'>{</span> <span class='hs-sel'>_plot_fillbetween_title</span> <span class='hs-keyglyph'>=</span> <span class='hs-str'>""</span>
<a name="line-79"></a> <span class='hs-layout'>,</span> <span class='hs-sel'>_plot_fillbetween_style</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>solidFillStyle</span> <span class='hs-layout'>(</span><span class='hs-varid'>opaque</span> <span class='hs-varop'>$</span> <span class='hs-varid'>sRGB</span> <span class='hs-num'>0.5</span> <span class='hs-num'>0.5</span> <span class='hs-num'>1.0</span><span class='hs-layout'>)</span>
<a name="line-80"></a> <span class='hs-layout'>,</span> <span class='hs-sel'>_plot_fillbetween_values</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>[]</span>
<a name="line-81"></a> <span class='hs-layout'>}</span>
<a name="line-82"></a>
<a name="line-83"></a><span class='hs-varop'>$</span><span class='hs-layout'>(</span> <span class='hs-varid'>makeLenses</span> <span class='hs-chr'>'</span><span class='hs-chr'>'</span><span class='hs-conid'>PlotFillBetween</span> <span class='hs-layout'>)</span>
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