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305 lines
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<title>Class DemoDiscreteRgb | HiAPI-C# 2025 </title>
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<meta name="description" content="Demonstrates the use of discrete RGB colors for rendering multiple objects. Shows how to apply different colors to similar geometric shapes using the method from class.">
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<article data-uid="Sample.Disp.DemoDiscreteRgb">
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<h1 id="Sample_Disp_DemoDiscreteRgb" data-uid="Sample.Disp.DemoDiscreteRgb" class="text-break">
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Class DemoDiscreteRgb
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</h1>
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<div class="facts text-secondary">
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<dl><dt>Namespace</dt><dd><a class="xref" href="Sample.html">Sample</a>.<a class="xref" href="Sample.Disp.html">Disp</a></dd></dl>
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<dl><dt>Assembly</dt><dd>Hi.Sample.Wpf.dll</dd></dl>
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</div>
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<div class="markdown summary"><p>Demonstrates the use of discrete RGB colors for rendering multiple objects.
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Shows how to apply different colors to similar geometric shapes using the
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<a class="xref" href="../../api/Hi.Coloring.ColorUtil.html#Hi_Coloring_ColorUtil_GetDiscreteRGB_Env_System_Double_System_Double_">GetDiscreteRGB_Env(double, double)</a> method from <a class="xref" href="../../api/Hi.Coloring.ColorUtil.html">ColorUtil</a> class.</p>
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</div>
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<div class="markdown conceptual"></div>
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<div class="codewrapper">
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<pre><code class="lang-csharp hljs">public class DemoDiscreteRgb : IDisplayee, IExpandToBox3d</code></pre>
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</div>
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<dl class="typelist inheritance">
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<dt>Inheritance</dt>
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<dd>
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<div><a class="xref" href="https://learn.microsoft.com/dotnet/api/system.object">object</a></div>
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<div><span class="xref">DemoDiscreteRgb</span></div>
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</dd>
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</dl>
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<dl class="typelist implements">
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<dt>Implements</dt>
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<dd>
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<div><a class="xref" href="../../api/Hi.Disp.IDisplayee.html">IDisplayee</a></div>
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<div><a class="xref" href="../../api/Hi.Geom.IExpandToBox3d.html">IExpandToBox3d</a></div>
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</dd>
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</dl>
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<dl class="typelist inheritedMembers">
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<dt>Inherited Members</dt>
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<dd>
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<div>
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<a class="xref" href="https://learn.microsoft.com/dotnet/api/system.object.equals#system-object-equals(system-object)">object.Equals(object)</a>
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</div>
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<div>
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<a class="xref" href="https://learn.microsoft.com/dotnet/api/system.object.equals#system-object-equals(system-object-system-object)">object.Equals(object, object)</a>
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</div>
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<div>
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<a class="xref" href="https://learn.microsoft.com/dotnet/api/system.object.gethashcode">object.GetHashCode()</a>
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</div>
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<div>
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<a class="xref" href="https://learn.microsoft.com/dotnet/api/system.object.gettype">object.GetType()</a>
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</div>
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<div>
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<a class="xref" href="https://learn.microsoft.com/dotnet/api/system.object.memberwiseclone">object.MemberwiseClone()</a>
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</div>
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<div>
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<a class="xref" href="https://learn.microsoft.com/dotnet/api/system.object.referenceequals">object.ReferenceEquals(object, object)</a>
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</div>
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<div>
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<a class="xref" href="https://learn.microsoft.com/dotnet/api/system.object.tostring">object.ToString()</a>
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</div>
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</dd></dl>
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<h2 id="Sample_Disp_DemoDiscreteRgb_remarks">Remarks</h2>
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<div class="markdown level0 remarks"><h3 id="source-code">Source Code</h3>
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<pre><code class="lang-csharp" name="SampleCode">using Hi.Disp;
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using Hi.Disp.Flag;
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using Hi.Geom;
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using Hi.Coloring;
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namespace Sample.Disp
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{
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/// <summary>
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/// Demonstrates the use of discrete RGB colors for rendering multiple objects.
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/// Shows how to apply different colors to similar geometric shapes using the
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/// <see cref="ColorUtil.GetDiscreteRGB_Env"/> method from <see cref="ColorUtil"/> class.
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/// </summary>
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/// <remarks>
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/// ### Source Code
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/// [!code-csharp[SampleCode](~/../Hi.Sample.Wpf/Disp/DemoDiscreteRgb.cs)]
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/// </remarks>
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public class DemoDiscreteRgb : IDisplayee
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{
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/// <inheritdoc/>
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public void Display(Bind bind)
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{
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bind.Rgb = ColorUtil.GetDiscreteRGB_Env();
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new Box3d(0, 0, 0, 1, 1, 1).ToDraw_Face().Display(bind);
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bind.Rgb = ColorUtil.GetDiscreteRGB_Env();
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new Box3d(1, 0, 0, 2, 1, 1).ToDraw_Face().Display(bind);
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bind.Rgb = ColorUtil.GetDiscreteRGB_Env();
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new Box3d(2, 0, 0, 3, 1, 1).ToDraw_Face().Display(bind);
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}
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/// <inheritdoc/>
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public void ExpandToBox3d(Box3d dst)
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{
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dst.Expand(new Vec3d(0, 0, 0));
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dst.Expand(new Vec3d(3, 1, 1));
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}
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static void Main()
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{
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DemoUtil.RunApplication("Demo Discrete I",
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new DispList(new CoordinateDrawing(), new DemoDiscreteRgb()));
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}
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}
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}
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</code></pre></div>
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<h2 class="section" id="methods">Methods
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</h2>
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<a id="Sample_Disp_DemoDiscreteRgb_Display_" data-uid="Sample.Disp.DemoDiscreteRgb.Display*"></a>
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<h3 id="Sample_Disp_DemoDiscreteRgb_Display_Hi_Disp_Bind_" data-uid="Sample.Disp.DemoDiscreteRgb.Display(Hi.Disp.Bind)">
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Display(Bind)
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</h3>
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<div class="markdown level1 summary"><p>Display function called in <a class="xref" href="../../api/Hi.Disp.DispEngine.html">DispEngine</a> rendering loop.</p>
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</div>
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<div class="markdown level1 conceptual"></div>
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<div class="codewrapper">
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<pre><code class="lang-csharp hljs">public void Display(Bind bind)</code></pre>
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</div>
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<h4 class="section">Parameters</h4>
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<dl class="parameters">
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<dt><code>bind</code> <a class="xref" href="../../api/Hi.Disp.Bind.html">Bind</a></dt>
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<dd><p>Bind with <a class="xref" href="../../api/Hi.Disp.DispEngine.html">DispEngine</a>. See <a class="xref" href="../../api/Hi.Disp.Bind.html">Bind</a>.</p>
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</dd>
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</dl>
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<a id="Sample_Disp_DemoDiscreteRgb_ExpandToBox3d_" data-uid="Sample.Disp.DemoDiscreteRgb.ExpandToBox3d*"></a>
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<h3 id="Sample_Disp_DemoDiscreteRgb_ExpandToBox3d_Hi_Geom_Box3d_" data-uid="Sample.Disp.DemoDiscreteRgb.ExpandToBox3d(Hi.Geom.Box3d)">
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ExpandToBox3d(Box3d)
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</h3>
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<div class="markdown level1 summary"><p>Expands the destination box.
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This function is usually used to compute the bounding box of elements.</p>
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</div>
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<div class="markdown level1 conceptual"></div>
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<div class="codewrapper">
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<pre><code class="lang-csharp hljs">public void ExpandToBox3d(Box3d dst)</code></pre>
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</div>
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<h4 class="section">Parameters</h4>
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<dl class="parameters">
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<dt><code>dst</code> <a class="xref" href="../../api/Hi.Geom.Box3d.html">Box3d</a></dt>
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<dd><p>Destination box</p>
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</dd>
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</dl>
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</article>
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