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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/1999/REC-html401-19991224/loose.dtd">
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<title>Castle Game Engine: CastleImages: Class TGrayscaleAlphaImage</title>
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<h2>Castle Game Engine</h2><p><a href="introduction.html" class="navigation">Introduction</a></p><p><a href="AllUnits.html" class="navigation">Units</a></p><p><a href="ClassHierarchy.html" class="navigation">Class Hierarchy</a></p><p><a href="AllClasses.html" class="navigation">Classes, Interfaces, Objects and Records</a></p><p><a href="AllTypes.html" class="navigation">Types</a></p><p><a href="AllVariables.html" class="navigation">Variables</a></p><p><a href="AllConstants.html" class="navigation">Constants</a></p><p><a href="AllFunctions.html" class="navigation">Functions and Procedures</a></p><p><a href="AllIdentifiers.html" class="navigation">Identifiers</a></p></td><td class="content">
<a name="TGrayscaleAlphaImage"></a><h1 class="cio">Class TGrayscaleAlphaImage</h1>
<table class="sections wide_list">
<tr>
<td><a class="section" href="#PasDoc-Description">Description</a></td><td><a class="section" href="#PasDoc-Hierarchy">Hierarchy</a></td><td>Fields</td><td><a class="section" href="#PasDoc-Methods">Methods</a></td><td><a class="section" href="#PasDoc-Properties">Properties</a></td></tr></table>
<a name="PasDoc-Description"></a><h2 class="unit">Unit</h2>
<p class="unitlink">
<a  href="CastleImages.html">CastleImages</a></p>
<h2 class="declaration">Declaration</h2>
<p class="declaration">
<code>type TGrayscaleAlphaImage = class(<a class="normal" href="CastleImages.TCastleImage.html">TCastleImage</a>)</code></p>
<h2 class="description">Description</h2>
<p>
Grayscale image with an alpha channel. Each pixel is two bytes: grayscale + alpha.</p>
<a name="PasDoc-Hierarchy"></a><h2 class="hierarchy">Hierarchy</h2>
<ul class="hierarchy"><li class="ancestor">TObject</li>
<li class="ancestor"><a class="normal" href="CastleImages.TEncodedImage.html">TEncodedImage</a></li>
<li class="ancestor"><a class="normal" href="CastleImages.TCastleImage.html">TCastleImage</a></li>
<li class="thisitem">TGrayscaleAlphaImage</li></ul><h2 class="overview">Overview</h2>
<a name="PasDoc-Methods"></a><h3 class="summary">Methods</h3>
<table class="summary wide_list">
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<td class="visibility"><a  href="legend.html"><img  src="public.gif" alt="Public" title="Public"></a></td>
<td class="itemcode"><code>class function <b><a  href="CastleImages.TGrayscaleAlphaImage.html#PixelSize">PixelSize</a></b>: Cardinal; override;</code></td>
</tr>
<tr class="list2">
<td class="visibility"><a  href="legend.html"><img  src="public.gif" alt="Public" title="Public"></a></td>
<td class="itemcode"><code>class function <b><a  href="CastleImages.TGrayscaleAlphaImage.html#ColorComponentsCount">ColorComponentsCount</a></b>: Cardinal; override;</code></td>
</tr>
<tr class="list">
<td class="visibility"><a  href="legend.html"><img  src="public.gif" alt="Public" title="Public"></a></td>
<td class="itemcode"><code>function <b><a  href="CastleImages.TGrayscaleAlphaImage.html#PixelPtr">PixelPtr</a></b>(const X, Y: Cardinal; const Z: Cardinal = 0): <a  href="CastleVectors.html#PVector2Byte">PVector2Byte</a>;</code></td>
</tr>
<tr class="list2">
<td class="visibility"><a  href="legend.html"><img  src="public.gif" alt="Public" title="Public"></a></td>
<td class="itemcode"><code>function <b><a  href="CastleImages.TGrayscaleAlphaImage.html#RowPtr">RowPtr</a></b>(const Y: Cardinal; const Z: Cardinal = 0): <a  href="CastleVectors.html#PArray_Vector2Byte">PArray_Vector2Byte</a>;</code></td>
</tr>
<tr class="list">
<td class="visibility"><a  href="legend.html"><img  src="public.gif" alt="Public" title="Public"></a></td>
<td class="itemcode"><code>procedure <b><a  href="CastleImages.TGrayscaleAlphaImage.html#Clear">Clear</a></b>(const Pixel: <a  href="CastleVectors.html#TVector2Byte">TVector2Byte</a>); reintroduce;</code></td>
</tr>
<tr class="list2">
<td class="visibility"><a  href="legend.html"><img  src="public.gif" alt="Public" title="Public"></a></td>
<td class="itemcode"><code>function <b><a  href="CastleImages.TGrayscaleAlphaImage.html#IsClear">IsClear</a></b>(const Pixel: <a  href="CastleVectors.html#TVector2Byte">TVector2Byte</a>): boolean; reintroduce;</code></td>
</tr>
<tr class="list">
<td class="visibility"><a  href="legend.html"><img  src="public.gif" alt="Public" title="Public"></a></td>
<td class="itemcode"><code>function <b><a  href="CastleImages.TGrayscaleAlphaImage.html#HasAlpha">HasAlpha</a></b>: boolean; override;</code></td>
</tr>
<tr class="list2">
<td class="visibility"><a  href="legend.html"><img  src="public.gif" alt="Public" title="Public"></a></td>
<td class="itemcode"><code>function <b><a  href="CastleImages.TGrayscaleAlphaImage.html#AlphaChannel">AlphaChannel</a></b>( const AlphaTolerance: Byte): <a  href="CastleImages.html#TAlphaChannel">TAlphaChannel</a>; override;</code></td>
</tr>
<tr class="list">
<td class="visibility"><a  href="legend.html"><img  src="public.gif" alt="Public" title="Public"></a></td>
<td class="itemcode"><code>procedure <b><a  href="CastleImages.TGrayscaleAlphaImage.html#LerpWith">LerpWith</a></b>(const Value: Single; SecondImage: <a  href="CastleImages.TCastleImage.html">TCastleImage</a>); override;</code></td>
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<tr class="list2">
<td class="visibility"><a  href="legend.html"><img  src="public.gif" alt="Public" title="Public"></a></td>
<td class="itemcode"><code>class procedure <b><a  href="CastleImages.TGrayscaleAlphaImage.html#MixColors">MixColors</a></b>(const OutputColor: Pointer; const Weights: <a  href="CastleVectors.html#TVector4Single">TVector4Single</a>; const Colors: <a  href="CastleVectors.html#TVector4Pointer">TVector4Pointer</a>); override;</code></td>
</tr>
<tr class="list">
<td class="visibility"><a  href="legend.html"><img  src="public.gif" alt="Public" title="Public"></a></td>
<td class="itemcode"><code>procedure <b><a  href="CastleImages.TGrayscaleAlphaImage.html#Assign">Assign</a></b>(const Source: <a  href="CastleImages.TCastleImage.html">TCastleImage</a>); override;</code></td>
</tr>
</table>
<a name="PasDoc-Properties"></a><h3 class="summary">Properties</h3>
<table class="summary wide_list">
<tr class="list">
<td class="visibility"><a  href="legend.html"><img  src="public.gif" alt="Public" title="Public"></a></td>
<td class="itemcode"><code>property <b><a  href="CastleImages.TGrayscaleAlphaImage.html#GrayscaleAlphaPixels">GrayscaleAlphaPixels</a></b>: <a  href="CastleVectors.html#PVector2Byte">PVector2Byte</a> read GetGrayscaleAlphaPixels;</code></td>
</tr>
</table>
<h2 class="description">Description</h2>
<h3 class="detail">Methods</h3>
<table class="detail wide_list">
<tr class="list">
<td class="visibility"><a  href="legend.html"><img  src="public.gif" alt="Public" title="Public"></a></td>
<td class="itemcode"><a name="PixelSize"></a><code>class function <b>PixelSize</b>: Cardinal; override;</code></td>
</tr>
<tr><td colspan="2">
&nbsp;</td></tr>
</table>
<table class="detail wide_list">
<tr class="list">
<td class="visibility"><a  href="legend.html"><img  src="public.gif" alt="Public" title="Public"></a></td>
<td class="itemcode"><a name="ColorComponentsCount"></a><code>class function <b>ColorComponentsCount</b>: Cardinal; override;</code></td>
</tr>
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&nbsp;</td></tr>
</table>
<table class="detail wide_list">
<tr class="list">
<td class="visibility"><a  href="legend.html"><img  src="public.gif" alt="Public" title="Public"></a></td>
<td class="itemcode"><a name="PixelPtr"></a><code>function <b>PixelPtr</b>(const X, Y: Cardinal; const Z: Cardinal = 0): <a  href="CastleVectors.html#PVector2Byte">PVector2Byte</a>;</code></td>
</tr>
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&nbsp;</td></tr>
</table>
<table class="detail wide_list">
<tr class="list">
<td class="visibility"><a  href="legend.html"><img  src="public.gif" alt="Public" title="Public"></a></td>
<td class="itemcode"><a name="RowPtr"></a><code>function <b>RowPtr</b>(const Y: Cardinal; const Z: Cardinal = 0): <a  href="CastleVectors.html#PArray_Vector2Byte">PArray_Vector2Byte</a>;</code></td>
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&nbsp;</td></tr>
</table>
<table class="detail wide_list">
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<td class="visibility"><a  href="legend.html"><img  src="public.gif" alt="Public" title="Public"></a></td>
<td class="itemcode"><a name="Clear"></a><code>procedure <b>Clear</b>(const Pixel: <a  href="CastleVectors.html#TVector2Byte">TVector2Byte</a>); reintroduce;</code></td>
</tr>
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&nbsp;</td></tr>
</table>
<table class="detail wide_list">
<tr class="list">
<td class="visibility"><a  href="legend.html"><img  src="public.gif" alt="Public" title="Public"></a></td>
<td class="itemcode"><a name="IsClear"></a><code>function <b>IsClear</b>(const Pixel: <a  href="CastleVectors.html#TVector2Byte">TVector2Byte</a>): boolean; reintroduce;</code></td>
</tr>
<tr><td colspan="2">
&nbsp;</td></tr>
</table>
<table class="detail wide_list">
<tr class="list">
<td class="visibility"><a  href="legend.html"><img  src="public.gif" alt="Public" title="Public"></a></td>
<td class="itemcode"><a name="HasAlpha"></a><code>function <b>HasAlpha</b>: boolean; override;</code></td>
</tr>
<tr><td colspan="2">
&nbsp;</td></tr>
</table>
<table class="detail wide_list">
<tr class="list">
<td class="visibility"><a  href="legend.html"><img  src="public.gif" alt="Public" title="Public"></a></td>
<td class="itemcode"><a name="AlphaChannel"></a><code>function <b>AlphaChannel</b>( const AlphaTolerance: Byte): <a  href="CastleImages.html#TAlphaChannel">TAlphaChannel</a>; override;</code></td>
</tr>
<tr><td colspan="2">
&nbsp;</td></tr>
</table>
<table class="detail wide_list">
<tr class="list">
<td class="visibility"><a  href="legend.html"><img  src="public.gif" alt="Public" title="Public"></a></td>
<td class="itemcode"><a name="LerpWith"></a><code>procedure <b>LerpWith</b>(const Value: Single; SecondImage: <a  href="CastleImages.TCastleImage.html">TCastleImage</a>); override;</code></td>
</tr>
<tr><td colspan="2">
&nbsp;</td></tr>
</table>
<table class="detail wide_list">
<tr class="list">
<td class="visibility"><a  href="legend.html"><img  src="public.gif" alt="Public" title="Public"></a></td>
<td class="itemcode"><a name="MixColors"></a><code>class procedure <b>MixColors</b>(const OutputColor: Pointer; const Weights: <a  href="CastleVectors.html#TVector4Single">TVector4Single</a>; const Colors: <a  href="CastleVectors.html#TVector4Pointer">TVector4Pointer</a>); override;</code></td>
</tr>
<tr><td colspan="2">
&nbsp;</td></tr>
</table>
<table class="detail wide_list">
<tr class="list">
<td class="visibility"><a  href="legend.html"><img  src="public.gif" alt="Public" title="Public"></a></td>
<td class="itemcode"><a name="Assign"></a><code>procedure <b>Assign</b>(const Source: <a  href="CastleImages.TCastleImage.html">TCastleImage</a>); override;</code></td>
</tr>
<tr><td colspan="2">
&nbsp;</td></tr>
</table>
<h3 class="detail">Properties</h3>
<table class="detail wide_list">
<tr class="list">
<td class="visibility"><a  href="legend.html"><img  src="public.gif" alt="Public" title="Public"></a></td>
<td class="itemcode"><a name="GrayscaleAlphaPixels"></a><code>property <b>GrayscaleAlphaPixels</b>: <a  href="CastleVectors.html#PVector2Byte">PVector2Byte</a> read GetGrayscaleAlphaPixels;</code></td>
</tr>
<tr><td colspan="2">
<p>
This is the same pointer as <a class="normal" href="CastleImages.TEncodedImage.html#RawPixels">RawPixels</a>, only typecasted to <a class="normal" href="CastleVectors.html#PVector2Byte">PVector2Byte</a></p>
</td></tr>
</table>
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