L_ReverseBitmapViewPerspective (original) (raw)

Summary

Performs a fast reverse operation by changing the bitmap's view perspective.

Syntax

#include "l_bitmap.h"

L_LTKRN_API L_INT L_ReverseBitmapViewPerspective(pBitmap)

Parameters

pBITMAPHANDLE pBitmap

Pointer to the bitmap handle referencing the bitmap to reverse.

Returns

Comments

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

This function is similar to L_RotateBitmapViewPerspective.

The bitmap data remains unchanged.

Required DLLs and Libraries

• LTKRN
• 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, Linux.

See Also

Functions

• L_ReverseBitmap
• L_RotateBitmapViewPerspective
• L_RotateBitmap
• L_ShearBitmap
• L_FlipBitmap

Topics

• Raster Image Functions: Doing Geometric Transformations
• Resizing Considerations

Example

For complete sample code, refer to the FEATURE2
example.
This example loads a bitmap and reverses it.

L_INT ReverseBitmapViewPerspectiveExample(L_VOID) { L_INT nRet; BITMAPHANDLE LeadBitmap; /* Bitmap handle to hold the loaded image. */ /* Load the bitmap, keeping the bits per pixel of the file */ nRet = L_LoadBitmap (MAKE_IMAGE_PATH(TEXT("IMAGE1.CMP")), &LeadBitmap, sizeof(BITMAPHANDLE), 0, ORDER_BGR, NULL, NULL); if(nRet != SUCCESS) return nRet; /* Reverse the bitmap */ nRet = L_ReverseBitmapViewPerspective(&LeadBitmap); 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; if(LeadBitmap.Flags.Allocated) L_FreeBitmap(&LeadBitmap); return SUCCESS; }

LEADTOOLS Raster Imaging C API Help