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)

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

Parameters

pBITMAPHANDLE pBitmap

Pointer to the bitmap handle that references the bitmap on which to apply the effect.

L_UINT uBricksWidth

Flat area of the brick width, in pixels. Valid range is from 0 to the bitmap width.

L_UINT uBricksHeight

Flat area of the brick height, in pixels. Valid range is from 0 to the bitmap height.

L_UINT uOffsetX

The X distance between the bitmap origin and the first brick origin, in pixels.

L_UINT uOffsetY

The Y distance between the bitmap origin and the first brick origin, in pixels.

L_UINT 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

L_UINT uMortarWidth

Mortar width, or the space between two adjacent bricks.

L_UINT 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.

L_UINT 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.

L_UINT uMortarRoughness

Mortar roughness. Valid range is from 0 to 300. At 0, the mortar looks completely smooth. Use higher values to increase the roughness.

L_UINT uMortarRoughnessEevenness

Weathering factor for the mortar. Valid range is from 0 to 10. The higher the value the more weathered the mortar looks.

L_UINT 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.

L_UINT uBricksRoughnessEevenness

Weathering factor for the bricks. Valid range is from 0 to 10. The higher the value the more weathered the bricks look.

COLORREF 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.

L_UINT 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 ( | ). Possible values are:

Value Meaning
Type of shading to use on the brick edges:
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.
Type of mortar to use:
BRICKS_TRANSPARENTMORTAR [0x0000] Use transparent mortar.
BRICKS_COLOREDMORTAR [0x0010] Use crMortarColor mortar.

Returns

Value Meaning
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

Platforms

Win32, x64.

See Also

Functions

Topics

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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