L_SpherizeBitmap
#include "l_bitmap.h"
L_LTIMGSFX_API L_INT L_SpherizeBitmap(pBitmap, nValue, CenterPt, crFill, uFlags)
pBITMAPHANDLE pBitmap; |
/* pointer to the bitmap handle */ |
L_INT nValue; |
/* stretch amount */ |
POINT CenterPt; |
/* sphere center */ |
COLORREF crFill; |
/* fill color */ |
L_UINT uFlags; |
/* flags */ |
Warps the image around a 3D spherical shape.
Parameter |
Description |
|
pBitmap |
Pointer to the bitmap handle that references the bitmap on which to apply the effect. |
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nValue |
Amount of stretching where: |
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Positive values: stretch the central pixels toward the edges. |
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Negative values: stretch the pixels toward the Center. |
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Valid values are range in between 500 and 500. |
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CenterPt |
POINT structure that contains the center of the sphere. |
|
crFill |
The COLORREF value that specifies the fill color for any exposed areas. |
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uFlags |
Flags that indicate how to handle exposed areas outside the sphere and inside the sphere. You can use a bitwise OR (|) to specify one flag from each group. |
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The following are the flags that indicate how to handle exposed areas outside the sphere: |
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|
Value |
Meaning |
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FILL_CLR |
[0x0000] Fill any exposed areas with crFill. |
|
FILL_RPT |
[0x0001] Stretch the image edges to fill the exposed area. |
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FILL_NOCHG |
[0x0002] Leave the exposed area as is, without changing it. |
|
The following are the flags that indicate how to handle exposed areas inside the sphere: |
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|
Value |
Meaning |
|
FILL_ROT |
[0x0000] Rotate the image inside the sphere pattern. |
|
FILL_WOUTROT |
[0x0010] Fill exposed sphere pattern center as selected from exposed area process type flag. |
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This flag is ignored if the nValue is negative. |
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 will warp the image as a 3D spherical shape around the specified CenterPt. The center point must be defined inside the bitmap or inside the region, if the bitmap has a region.
If the bitmap has a region, the effect will be applied on the region only.
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 only in the Document/Medical 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
Windows 2000 / XP/Vista.
See Also
Example
L_INT SpherizeBitmapExample(L_VOID) { L_INT nRet; BITMAPHANDLE LeadBitmap; /* Bitmap handle for the image */ POINT CenterPt; /* Load a bitmap at its own bits per pixel */ nRet = L_LoadBitmap(TEXT("C:\\Program Files\\LEAD Technologies\\LEADTOOLS 15\\Images\\IMAGE3.CMP"), &LeadBitmap, sizeof(BITMAPHANDLE), 0, ORDER_BGR, NULL, NULL); if(nRet !=SUCCESS) return nRet; /* Warp the image around 3D spherical shape around the center of the bitmap */ CenterPt.x = LeadBitmap.Width/2; CenterPt.y = LeadBitmap. Height/2; nRet = L_SpherizeBitmap(&LeadBitmap, 100, CenterPt, 0, FILL_RPT | FILL_WOUTROT); if(nRet !=SUCCESS) return nRet; nRet = L_SaveBitmap(TEXT("C:\\Program Files\\LEAD Technologies\\LEADTOOLS 15\\Images\\Result.BMP"), &LeadBitmap, FILE_BMP, 24, 0, NULL); if(nRet !=SUCCESS) return nRet; //free bitmap if(LeadBitmap.Flags.Allocated) L_FreeBitmap(&LeadBitmap); return SUCCESS; }