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Texture Atlas Maker

, 1 Apr 2012
A utility to create texture atlases for 2D OpenGL games
AtlasExample_iphone_project.zip
AtlasExample
.DS_Store
__MACOSX
AtlasExample
._.DS_Store
AtlasExample
.DS_Store
AtlasExample
._.DS_Store
AtlasAppDelegate.mm
AtlasExample-Info.plist
AtlasExample-Prefix.pch
._AtlasExample-Prefix.pch
EAGLView.mm
en.lproj
InfoPlist.strings
en.lproj
._InfoPlist.strings
MainWindow.xib
ImagePNG.mm
._ImagePNG.mm
images0.tga
main.m
._main.m
Shaders
Shader.fsh
Shaders
._Shader.fsh
Shader.vsh
._Shader.vsh
AtlasExample.xcodeproj
project.pbxproj
project.xcworkspace
contents.xcworkspacedata
xcuserdata
lefty.xcuserdatad
UserInterfaceState.xcuserstate
xcuserdata
lefty.xcuserdatad
xcdebugger
Breakpoints.xcbkptlist
xcschemes
AtlasExample.xcscheme
xcschememanagement.plist
AtlasExampleTests
AtlasExampleTests-Info.plist
AtlasExampleTests-Prefix.pch
AtlasExampleTests
._AtlasExampleTests-Prefix.pch
AtlasExampleTests.m
._AtlasExampleTests.m
en.lproj
InfoPlist.strings
en.lproj
._InfoPlist.strings
AtlasExample_iPhone_project_2.1.zip
.DS_Store
._.DS_Store
.DS_Store
._.DS_Store
AtlasAppDelegate.mm
AtlasExample-Info.plist
AtlasExample-Prefix.pch
._AtlasExample-Prefix.pch
EAGLView.mm
InfoPlist.strings
._InfoPlist.strings
MainWindow.xib
ImagePNG.mm
._ImagePNG.mm
imagesNelly0.tga
main.m
._main.m
Shader.fsh
._Shader.fsh
Shader.vsh
._Shader.vsh
project.pbxproj
contents.xcworkspacedata
UserInterfaceState.xcuserstate
Breakpoints.xcbkptlist
AtlasExample.xcscheme
xcschememanagement.plist
AtlasExampleTests-Info.plist
AtlasExampleTests-Prefix.pch
._AtlasExampleTests-Prefix.pch
AtlasExampleTests.m
._AtlasExampleTests.m
InfoPlist.strings
._InfoPlist.strings
AtlasMaker.zip
AtlasMaker
.classpath
.project
bin
icon.png
images
icon.png
output.png
settings.png
output.png
settings.png
src
AtlasMaker_jar.zip
AtlasMaker.jar
AtlasMaker_jar_2.0.zip
AtlasMaker.jar
AtlasMaker_jar_2.1.zip
AtlasMaker.jar
AtlasMaker_jar_2.2.1.zip
AtlasMaker.jar
AtlasMaker_jar_2.2.zip
AtlasMaker.jar
AtlasMaker_source.2.2.1.zip
.classpath
.project
.settings
org.eclipse.jdt.core.prefs
atlasMaker.properties
icon.png
icon.png
settings.png
settings.png
AtlasMaker_source.zip
.classpath
.project
icon.png
icon.png
output.png
settings.png
output.png
settings.png
AtlasMaker_source_2.0.zip
.classpath
.project
atlasMaker.properties
icon.png
icon.png
settings.png
settings.png
AtlasMaker_source_2.1.zip
.classpath
.project
org.eclipse.jdt.core.prefs
atlasMaker.properties
icon.png
icon.png
settings.png
settings.png
AtlasMaker_source_2.2.zip
.classpath
.project
org.eclipse.jdt.core.prefs
icon.png
icon.png
settings.png
settings.png
#ifndef _TARGAREADER_H_INCLUDED_
#define _TARGAREADER_H_INCLUDED_

class TargaReader
{
#pragma pack(push)  /* push current alignment to stack */
#pragma pack(1)     /* set alignment to 1 byte boundary */
	class TargaHeader 
	{
		public:
		char  m_idLength;
		char  m_colourMapType;
		char  m_imageType;
		short m_colourMapOrigin;
		short m_colourMapLength;
		char  m_colourMapDepth;
		short m_xOrigin;
		short m_yOrigin;
		short m_width;
		short m_height;
		char  m_bitsPerPixel;
		char  m_imageDescriptor;
	};
#pragma pack(pop) 
public:
	TargaReader();
	~TargaReader();
	void Load(const string& fileName);
	int GetWidth() const
	{
		return m_targaHeader.m_width;
	}
	int GetHeight() const
	{
		return m_targaHeader.m_height;
	}
	unsigned char* GetRawData()
	{
		return (unsigned char*)m_pData;
	}
	int GetBitDepth() const
	{
		return m_targaHeader.m_bitsPerPixel;
	}
private:
	void ReadRLE(FILE *pFile);
	void ReadRLE16(const char* pDataIn, int bufferInSize, int totalPixels);
	void ReadRLE24(const char* pDataIn, int bufferInSize, int totalPixels);
	void ReadRLE32(const char* pDataIn, int bufferInSize, int totalPixels);
	TargaHeader m_targaHeader;
	char* m_pData;
	int m_dataSize;
};





#endif // _TARGAREADER_H_INCLUDED_

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This article, along with any associated source code and files, is licensed under The BSD License

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About the Author

ed welch
Software Developer Astronautz
Spain Spain
After working in the software industry for many years, I've started my own games company that specialises in strategy games for mobile platforms.

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Web01 | 2.8.140926.1 | Last Updated 1 Apr 2012
Article Copyright 2012 by ed welch
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