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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 TRGBImage</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="TRGBImage"></a><h1 class="cio">Class TRGBImage</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 TRGBImage = class(<a class="normal" href="CastleImages.TCastleImage.html">TCastleImage</a>)</code></p>
<h2 class="description">Description</h2>
<p>
Image with pixel represented as a <a class="normal" href="CastleVectors.html#TVector3Byte">TVector3Byte</a> (red, green, blue).</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">TRGBImage</li></ul><h2 class="overview">Overview</h2>
<a name="PasDoc-Methods"></a><h3 class="summary">Methods</h3>
<table class="summary wide_list">
<tr class="list">
<td class="visibility"><a href="legend.html"><img src="protected.gif" alt="Protected" title="Protected"></a></td>
<td class="itemcode"><code>procedure <b><a href="CastleImages.TRGBImage.html#DrawCore">DrawCore</a></b>(Source: <a href="CastleImages.TCastleImage.html">TCastleImage</a>; X, Y, SourceX, SourceY, SourceWidth, SourceHeight: Integer); 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.TRGBImage.html#PixelSize">PixelSize</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>class function <b><a href="CastleImages.TRGBImage.html#ColorComponentsCount">ColorComponentsCount</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>function <b><a href="CastleImages.TRGBImage.html#PixelPtr">PixelPtr</a></b>(const X, Y: Cardinal; const Z: Cardinal = 0): <a href="CastleVectors.html#PVector3Byte">PVector3Byte</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>function <b><a href="CastleImages.TRGBImage.html#RowPtr">RowPtr</a></b>(const Y: Cardinal; const Z: Cardinal = 0): <a href="CastleVectors.html#PArray_Vector3Byte">PArray_Vector3Byte</a>;</code></td>
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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>procedure <b><a href="CastleImages.TRGBImage.html#InvertRGBColors">InvertRGBColors</a></b>; override;</code></td>
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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>procedure <b><a href="CastleImages.TRGBImage.html#SetColorRGB">SetColorRGB</a></b>(const x, y: Integer; const v: <a href="CastleVectors.html#TVector3Single">TVector3Single</a>); override;</code></td>
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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>procedure <b><a href="CastleImages.TRGBImage.html#Clear">Clear</a></b>(const Pixel: <a href="CastleVectors.html#TVector4Byte">TVector4Byte</a>); override;</code></td>
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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>function <b><a href="CastleImages.TRGBImage.html#IsClear">IsClear</a></b>(const Pixel: <a href="CastleVectors.html#TVector4Byte">TVector4Byte</a>): boolean; override;</code></td>
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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>procedure <b><a href="CastleImages.TRGBImage.html#TransformRGB">TransformRGB</a></b>(const Matrix: <a href="CastleVectors.html#TMatrix3Single">TMatrix3Single</a>); override;</code></td>
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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>procedure <b><a href="CastleImages.TRGBImage.html#ModulateRGB">ModulateRGB</a></b>(const ColorModulator: <a href="CastleColors.html#TColorModulatorByteFunc">TColorModulatorByteFunc</a>); override;</code></td>
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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>function <b><a href="CastleImages.TRGBImage.html#ToRGBAlphaImage">ToRGBAlphaImage</a></b>: <a href="CastleImages.TRGBAlphaImage.html">TRGBAlphaImage</a>;</code></td>
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<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.TRGBImage.html#ToRGBFloat">ToRGBFloat</a></b>: <a href="CastleImages.TRGBFloatImage.html">TRGBFloatImage</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.TRGBImage.html#ToGrayscale">ToGrayscale</a></b>: <a href="CastleImages.TGrayscaleImage.html">TGrayscaleImage</a>;</code></td>
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<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.TRGBImage.html#HorizontalLine">HorizontalLine</a></b>(const x1, x2, y: Integer; const Color: <a href="CastleVectors.html#TVector3Byte">TVector3Byte</a>);</code></td>
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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>procedure <b><a href="CastleImages.TRGBImage.html#HorizontalLine">HorizontalLine</a></b>(const x1, x2, y: Integer; const Color: <a href="CastleColors.html#TCastleColor">TCastleColor</a>);</code></td>
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<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.TRGBImage.html#VerticalLine">VerticalLine</a></b>(const x, y1, y2: Integer; const Color: <a href="CastleVectors.html#TVector3Byte">TVector3Byte</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>procedure <b><a href="CastleImages.TRGBImage.html#VerticalLine">VerticalLine</a></b>(const x, y1, y2: Integer; const Color: <a href="CastleColors.html#TCastleColor">TCastleColor</a>);</code></td>
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<tr class="list">
<td class="visibility"><a href="legend.html"><img src="public.gif" alt="Public" title="Public"></a></td>
<td class="itemcode"><code>constructor <b><a href="CastleImages.TRGBImage.html#CreateCombined">CreateCombined</a></b>(const MapImage: <a href="CastleImages.TRGBImage.html">TRGBImage</a>; var ReplaceWhiteImage, ReplaceBlackImage: <a href="CastleImages.TRGBImage.html">TRGBImage</a>);</code></td>
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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>procedure <b><a href="CastleImages.TRGBImage.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="list">
<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.TRGBImage.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="list2">
<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.TRGBImage.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.TRGBImage.html#RGBPixels">RGBPixels</a></b>: <a href="CastleVectors.html#PVector3Byte">PVector3Byte</a> read GetRGBPixels;</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="protected.gif" alt="Protected" title="Protected"></a></td>
<td class="itemcode"><a name="DrawCore"></a><code>procedure <b>DrawCore</b>(Source: <a href="CastleImages.TCastleImage.html">TCastleImage</a>; X, Y, SourceX, SourceY, SourceWidth, SourceHeight: Integer); override;</code></td>
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</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="PixelSize"></a><code>class function <b>PixelSize</b>: Cardinal; override;</code></td>
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</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="ColorComponentsCount"></a><code>class function <b>ColorComponentsCount</b>: Cardinal; override;</code></td>
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</td></tr>
</table>
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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="PixelPtr"></a><code>function <b>PixelPtr</b>(const X, Y: Cardinal; const Z: Cardinal = 0): <a href="CastleVectors.html#PVector3Byte">PVector3Byte</a>;</code></td>
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</td></tr>
</table>
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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="RowPtr"></a><code>function <b>RowPtr</b>(const Y: Cardinal; const Z: Cardinal = 0): <a href="CastleVectors.html#PArray_Vector3Byte">PArray_Vector3Byte</a>;</code></td>
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</td></tr>
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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="InvertRGBColors"></a><code>procedure <b>InvertRGBColors</b>; override;</code></td>
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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="SetColorRGB"></a><code>procedure <b>SetColorRGB</b>(const x, y: Integer; const v: <a href="CastleVectors.html#TVector3Single">TVector3Single</a>); override;</code></td>
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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#TVector4Byte">TVector4Byte</a>); override;</code></td>
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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="IsClear"></a><code>function <b>IsClear</b>(const Pixel: <a href="CastleVectors.html#TVector4Byte">TVector4Byte</a>): boolean; override;</code></td>
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</td></tr>
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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="TransformRGB"></a><code>procedure <b>TransformRGB</b>(const Matrix: <a href="CastleVectors.html#TMatrix3Single">TMatrix3Single</a>); override;</code></td>
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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="ModulateRGB"></a><code>procedure <b>ModulateRGB</b>(const ColorModulator: <a href="CastleColors.html#TColorModulatorByteFunc">TColorModulatorByteFunc</a>); override;</code></td>
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</td></tr>
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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="ToRGBAlphaImage"></a><code>function <b>ToRGBAlphaImage</b>: <a href="CastleImages.TRGBAlphaImage.html">TRGBAlphaImage</a>;</code></td>
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<p>
Create a new <a class="normal" href="CastleImages.TRGBAlphaImage.html">TRGBAlphaImage</a> instance with RGB contents copied from this image, and alpha fully opaque.</p>
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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="ToRGBFloat"></a><code>function <b>ToRGBFloat</b>: <a href="CastleImages.TRGBFloatImage.html">TRGBFloatImage</a>;</code></td>
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<p>
Convert image to an <a class="normal" href="CastleImages.TRGBFloatImage.html">TRGBFloatImage</a> format.
<p>Although float format offers superior precision compared to 8bit RGB, there is a slight chance of some unnoticeable loss of information in such convertion, since floating-point values are involved in calculation.
<p>But generally this conversion is relatively safe (contrary to convertion float -> 8-bit RGB, which must be lossy).
<p>But still you should note that doing such convertion has little sense since float format is useful only when you have colors that can't be expressed as simple 8-bit RGB. But by using this convertion you initially fill float image with data that does not have precision beyond standard 0..255 discreet range for each RGB component...</p>
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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="ToGrayscale"></a><code>function <b>ToGrayscale</b>: <a href="CastleImages.TGrayscaleImage.html">TGrayscaleImage</a>;</code></td>
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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="HorizontalLine"></a><code>procedure <b>HorizontalLine</b>(const x1, x2, y: Integer; const Color: <a href="CastleVectors.html#TVector3Byte">TVector3Byte</a>);</code></td>
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<p>
Draw horizontal line. Must be y1 <= y2, else it is NOOP.</p>
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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="HorizontalLine"></a><code>procedure <b>HorizontalLine</b>(const x1, x2, y: Integer; const Color: <a href="CastleColors.html#TCastleColor">TCastleColor</a>);</code></td>
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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="VerticalLine"></a><code>procedure <b>VerticalLine</b>(const x, y1, y2: Integer; const Color: <a href="CastleVectors.html#TVector3Byte">TVector3Byte</a>);</code></td>
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<p>
Draw vertical line. Must be x1 <= x2, else it is NOOP.</p>
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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="VerticalLine"></a><code>procedure <b>VerticalLine</b>(const x, y1, y2: Integer; const Color: <a href="CastleColors.html#TCastleColor">TCastleColor</a>);</code></td>
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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="CreateCombined"></a><code>constructor <b>CreateCombined</b>(const MapImage: <a href="CastleImages.TRGBImage.html">TRGBImage</a>; var ReplaceWhiteImage, ReplaceBlackImage: <a href="CastleImages.TRGBImage.html">TRGBImage</a>);</code></td>
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<p>
Create image by merging two images according to a (third) mask image. This is a very special constructor. It creates image with the same size as MapImage. It also resizes ReplaceWhiteImage, ReplaceBlackImage to the size of MapImage.
<p>Then it inits color of each pixel of our image with combined colors of two pixels on the same coordinates from ReplaceWhiteImage, ReplaceBlackImage, something like
<p></p>
<pre class="preformatted">
Pixel[x, y] := ReplaceWhiteImage[x, y] * S +
ReplaceBlackImage[x, y] * (S-1);
</pre>
<p>
<p>where S = average of red, gree, blue of color MapImage[x, y].
<p>This means that final image will look like ReplaceWhiteImage in the areas where MapImage is <a class="normal" href="CastleColors.html#White">white</a>, and it will look like ReplaceBlackImage in the areas where MapImage is <a class="normal" href="CastleColors.html#Black">black</a>.</p>
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<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>
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<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>
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<td class="itemcode"><a name="Assign"></a><code>procedure <b>Assign</b>(const Source: <a href="CastleImages.TCastleImage.html">TCastleImage</a>); override;</code></td>
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<h3 class="detail">Properties</h3>
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<td class="itemcode"><a name="RGBPixels"></a><code>property <b>RGBPixels</b>: <a href="CastleVectors.html#PVector3Byte">PVector3Byte</a> read GetRGBPixels;</code></td>
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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#PVector3Byte">PVector3Byte</a></p>
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