73 lines
1.5 KiB
C++
73 lines
1.5 KiB
C++
//========= Copyright © 1996-2005, Valve Corporation, All rights reserved. ============//
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//
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// Purpose:
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//
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// $NoKeywords: $
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//=============================================================================//
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#ifndef TEXTUREPACKER_H
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#define TEXTUREPACKER_H
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#ifdef _WIN32
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#pragma once
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#endif
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#include "utlntree.h"
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#define DEFAULT_TEXTURE_PAGE_WIDTH 1024
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#define DEFAULT_TEXTURE_PAGE_WIDTH 1024
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//-----------------------------------------------------------------------------
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// Purpose: manages texture packing of textures as they are added.
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//-----------------------------------------------------------------------------
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class CTexturePacker
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{
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public:
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struct TreeEntry_t
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{
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Rect_t rc;
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bool bInUse;
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};
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CTexturePacker( int texWidth = DEFAULT_TEXTURE_PAGE_WIDTH, int texHeight = DEFAULT_TEXTURE_PAGE_WIDTH, int pixelGap = 0 );
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~CTexturePacker();
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// Use -1 if you want to insert at the root.
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int InsertRect( const Rect_t& texRect, int nodeIndex = -1 );
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bool RemoveRect( int nodeIndex );
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const TreeEntry_t &GetEntry( int i )
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{
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return m_Tree[i];
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}
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int GetPageWidth()
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{
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return m_PageWidth;
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}
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int GetPageHeight()
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{
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return m_PageHeight;
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}
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// clears the tree
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void Clear();
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private:
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bool IsLeaf( int nodeIndex );
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bool IsLeftChild( int nodeIndexParent, int nodeIndexChild );
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bool IsRightChild( int nodeIndexParent, int nodeIndexChild );
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// Pixel gap between textures.
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int m_PixelGap;
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int m_PageWidth;
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int m_PageHeight;
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CUtlNTree< TreeEntry_t > m_Tree;
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};
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#endif // TEXTUREPACKER_H
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