L_BricksTextureBitmap - Raster Imaging C API Help

L_BricksTextureBitmap

#include "l_bitmap.h"

L_LTIMGSFX_API L_INT L_BricksTextureBitmap(pBitmap, uBricksWidth, uBricksHeight, uOffsetX, uOffsetY, uEdgeWidth, uMortarWidth, uShadeAngle, uRowDifference, uMortarRoughness, uMortarRoughnessEevenness, uBricksRoughness, uBricksRoughnessEevenness, crMortarColor, uFlags)

pBITMAPHANDLE pBitmap;

pointer to the bitmap handle

L_UINT uBricksWidth;

width of the flat area of the brick

L_UINT uBricksHeight;

height of the flat area of the brick

L_UINT uOffsetX;

first brick X offset

L_UINT uOffsetY;

first brick Y offset

L_UINT uEdgeWidth;

perceived brick edge width

L_UINT uMortarWidth;

mortar width

L_UINT uShadeAngle;

shading angle

L_UINT uRowDifference;

horizontal distance between the first brick in the first row and the first brick in the second row

L_UINT uMortarRoughness;

mortar roughness

L_UINT uMortarRoughnessEevenness;

mortar weathering factor

L_UINT uBricksRoughness;

brick roughness

L_UINT uBricksRoughnessEevenness;

brick weathering factor

COLORREF crMortarColor;

mortar color

L_UINT uFlags;

flags

Creates a brick texture that makes the image look like it has been drawn on a brick wall.

Parameter Description
pBitmap Pointer to the bitmap handle that references the bitmap on which to apply the effect.
uBricksWidth Flat area of the brick width, in pixels. Valid range is from 0 to the bitmap width.
uBricksHeight Flat area of the brick height, in pixels. Valid range is from 0 to the bitmap height.
uOffsetX The X distance between the bitmap origin and the first brick origin, in pixels.
uOffsetY The Y distance between the bitmap origin and the first brick origin, in pixels.
uEdgeWidth Perceived edge width, in pixels, which represents the brick edge width when the brick is viewed from the perpendicular to the front of the brick. Minimum value is 1. See the following figure:
  image\Edge_Width.gif
uMortarWidth Mortar width, or the space between two adjacent bricks.
uShadeAngle Angle, in degrees, that identifies from which side the light will hit the brick edges, resulting in a brightening of the opposite angle edges, and the darkening of the other edges. Valid range is from 0 to 360.
uRowDifference Horizontal distance between the first brick of the first row and the first brick on the next row, in pixels. Setting this value to zero will make a grid-like wall. Valid range is from 0 to bitmap width.
uMortarRoughness Mortar roughness. Valid range is from 0 to 300. At 0, the mortar looks completely smooth. Use higher values to increase the roughness.
uMortarRoughnessEevenness Weathering factor for the mortar. Valid range is from 0 to 10. The higher the value the more weathered the mortar looks.
uBricksRoughness Brick roughness. Valid range is from 0 to 300. At 0, the brick looks completely smooth. Use higher values to increase the roughness of the brick surface.
uBricksRoughnessEevenness Weathering factor for the bricks. Valid range is from 0 to 10. The higher the value the more weathered the bricks look.
crMortarColor The COLORREF value that specifies the mortar color. You can specify a COLORREF value, such as the return value of the Windows RGB macro, or you can use the PALETTEINDEX macro to specify a palette color.
uFlags Flags that determine which type of brick edge to use, and which mortar style to use. You can specify no flags, one flag, or combine one flag from each group of flags by using a bitwise OR ( | ).

The following flags indicate which type of shading to use on the brick edges:

  Value Meaning
  BRICKS_SOLID [0x0000] Use bricks with solid edges.
  BRICKS_SMOOTHEDOUT [0x0001] Use bricks with edges that fade from in to out.
  BRICKS_SMOOTHEDIN [0x0002] Use bricks with edges that fade from out to in.
  The following flags indicate which type of mortar to use:
  Value Meaning
  BRICKS_TRANSPARENTMORTAR [0x0000] Use transparent mortar.
  BRICKS_COLOREDMORTAR [0x0010] Use crMortarColor mortar.

Returns

SUCCESS

The function was successful.

< 1

An error occurred. Refer to Return Codes.

Comments

This function does not support signed data images. It returns the error code ERROR_SIGNED_DATA_NOT_SUPPORTED if a signed data image is passed to this function.

This function creates a brick-like texture. Edges that are in the angle of the light source are brightened and the others are darkened. Apply this texture to a bitmap by using pBitmap as the source image. You can obtain the best result by applying this function on a medium brightness image.

Using the shading option of BRICKS_SMOOTHEDOUT results in bricks that have a more chiseled look than the same settings with a shading option of BRICKS_SMOOTHEDIN.

For an example, click here

This function supports 12- and 16-bit grayscale and 48- and 64-bit color images. Support for 12- and 16-bit grayscale and 48- and 64-bit color images is available in the Document and Medical Imaging toolkits.

To update a status bar or detect a user interrupt during execution of this function, refer to L_SetStatusCallback.

This function does not support 32-bit grayscale images. It returns the error code ERROR_GRAY32_UNSUPPORTED if a 32-bit grayscale image is passed to this function.

Required DLLs and Libraries

LTIMGSFX

For a listing of the exact DLLs and Libraries needed, based on the toolkit version, refer to Files To Be Included With Your Application.

Platforms

Win32, x64.

See Also

Functions:

L_EmbossBitmap, L_AddShadowBitmap, L_AllocFTArray, L_ChangeHueSatIntBitmap, L_ColorReplaceBitmap, L_ColorThresholdBitmap, L_DFTBitmap, L_DirectionEdgeStatisticalBitmap, L_FFTBitmap, L_FreeFTArray, L_FrqFilterBitmap, L_FrqFilterMaskBitmap, L_FTDisplayBitmap, L_GetBitmapStatisticsInfo, L_GetFeretsDiameter, L_GetObjectInfo, L_GetRgnContourPoints, L_GetRgnPerimeterLength, L_MathFunctionBitmap, L_SegmentBitmap, L_SubtractBackgroundBitmap, L_UserFilterBitmap.

Topics:

Applying Artistic Effects

 

Raster Image Functions: Filtering Images

 

Raster Image Functions: Artistic Effects

 

Raster Image Functions: Processing an Image

Example

L_INT BricksTextureBitmapExample(L_VOID) 
{ 
   L_INT nRet; 
   BITMAPHANDLE LeadBitmap;   /* Bitmap handle for the image */ 
   /* Load a bitmap at its own bits per pixel */ 
   nRet = L_LoadBitmap (MAKE_IMAGE_PATH(TEXT("ImageProcessingDemo\\Image3.cmp")), &LeadBitmap, sizeof (BITMAPHANDLE), 0, ORDER_BGR, NULL, NULL); 
   if(nRet !=SUCCESS) 
      return nRet; 
    /* Apply the Bricks Texture effect to the image*/ 
   nRet = L_BricksTextureBitmap(&LeadBitmap, 60, 20, 0, 0, 3, 4, 315, 33, 20, 0, 10, 0, 0, BRICKS_SMOOTHEDOUT); 
   if(nRet !=SUCCESS) 
      return nRet; 
   nRet = L_SaveBitmap(MAKE_IMAGE_PATH(TEXT("Result.BMP")), &LeadBitmap, FILE_BMP, 24, 0, NULL); 
   if(nRet !=SUCCESS) 
      return nRet; 
   //free bitmap  
   if(LeadBitmap.Flags.Allocated)   
      L_FreeBitmap(&LeadBitmap);     
   return SUCCESS; 
} 
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