bshadow2.h

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// $Id: bshadow2.h 1170 2006-05-23 10:29:28Z gavin $
/* @@tag:xara-cn@@ DO NOT MODIFY THIS LINE
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 */
#ifndef _BITMAPSHADOW2_H_
#define _BITMAPSHADOW2_H_

#ifdef BUILDSHADOWS

const UINT32 MAX_SHADOW_BLUR    = 100 ;     // Maximum amount of blur
const UINT32 MAX_CONTOUR        = 100 ;     // Maximum contour pixel size.
const double MIN_BLUR_DIAMETER  = 0.71 ;    // Minimum blur diameter is sqrt(0.5), rounded up
                                            // a little to safely avoid boundary conditions.

enum {
    MAX_ROW_OFFSETS = MAX_SHADOW_BLUR*2+1,  // Maximum size of shadow mask.
    TABLE_SIZE = 0x800                      // Maximum lookup table size for shadow generation.
} ;

bool GenerateWallShadow(
    CONST BITMAPINFOHEADER* pSourceInfo,
    CONST BYTE*             pSourceBitmap,
    CONST BITMAPINFOHEADER* pDestinationInfo,
          BYTE*             pDestinationBitmap,
    CONST UINT32   nRowOffsets,
    CONST UINT32*  pLeftOffsets,
    CONST UINT32* pRightOffsets,
    CONST UINT32 nColumnOffsets,
    CONST UINT32*   pLowOffsets,
    CONST UINT32*  pHighOffsets,
    CONST UINT32 nTranslationShift,
    CONST BYTE*  pTranslationTable
) ;

bool GenerateFloorShadow(
    void* pCode,
    CONST BITMAPINFOHEADER* pSourceInfo,
    CONST BYTE*             pSourceBitmap,
    CONST BITMAPINFOHEADER* pDestinationInfo,
          BYTE*             pDestinationBitmap,
    CONST UINT32   nRowOffsets,
    CONST INT32*  pLeftOffsets,
    CONST INT32* pRightOffsets,
    CONST UINT32  nTranslationShift,
    CONST BYTE*  pTranslationTable
) ;

void ContourBitmap( 
    BYTE*        pBits8, 
    const UINT32 uByteWidth8,
    BYTE*       pDBits8,
    BITMAPINFO* pDInfo8, 
    const double fContour,
    const UINT32 uContour
) ;

// Karim 02/08/2000
// made this static so it can be called by GenerateWallShadow().

#if defined(__WXMSW__)
    void CompileShadowCode(
        BYTE* pCode,
        UINT32  nWidth,
        UINT32  nRows,
        CONST DWORD* pLeft,
        CONST DWORD* pRight,
        UINT32  nShift,
        CONST BYTE* pScale
    ) ;
#endif

#endif

#endif //_BITMAPSHADOW_H_

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