L_FunctionalLightBitmap (original) (raw)

Summary

Adds light to the bitmap according to a function-based distribution. This light will be generated by one of the following methods: linear, quadratic, sine, cosine, or using freehand points.

Syntax

#include "l_bitmap.h"

L_LTIMGSFX_API L_INT L_FunctionalLightBitmap(pBitmap, pLightParams, uFlags)

Parameters

pBITMAPHANDLE pBitmap

Pointer to the bitmap handle referencing the bitmap to be modified.

pLIGHTPARAMS pLightParams

Pointer to the LIGHTPARAMS structure that contains information about the required light.

L_UINT32 uFlags

Reserved for future use. Must be 0.

Returns

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.

Controls the brightness of the bitmap according to the method selected for generating the light.

This function supports all bits/pixel supported by LEADTOOLS.

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.

Functional Light Function - Before

Functional Light Function - After

View additional platform support for this Functional Light 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_AddBitmapNoise
• L_EmbossBitmap
• L_MosaicBitmap
• L_MotionBlurBitmap
• L_OilifyBitmap
• L_PosterizeBitmap
• L_RemoveRedeyeBitmap
• L_SolarizeBitmap
• L_UnderlayBitmap
• L_BumpMapBitmap
• L_CubismBitmap
• L_DrawStarBitmap
• L_DryBitmap
• L_FreePlaneBendBitmap
• L_FreeRadBendBitmap
• L_GlassEffectBitmap
• L_GlowFilterBitmap
• L_LensFlareBitmap
• L_LightBitmap
• L_OceanBitmap
• L_PlaneBendBitmap
• L_PlaneBitmap
• L_SampleTargetBitmap
• L_TunnelBitmap
• L_BendingBitmap
• L_CylindricalBitmap
• L_FreeHandShearBitmap
• L_FreeHandWaveBitmap
• L_ImpressionistBitmap
• L_PixelateBitmap
• L_PolarBitmap
• L_PunchBitmap
• L_RadialBlurBitmap
• L_RadWaveBitmap
• L_RippleBitmap
• L_SpherizeBitmap
• L_SwirlBitmap
• L_WaveBitmap
• L_WindBitmap
• L_ZoomBlurBitmap
• L_ZoomWaveBitmap
• L_DiceEffectBitmap
• L_RingEffectBitmap
• L_BricksTextureBitmap
• L_CanvasBitmap
• L_CloudsBitmap
• L_ColoredBallsBitmap
• L_DiffuseGlowBitmap
• L_DisplaceMapBitmap
• L_FragmentBitmap
• L_HalfTonePatternBitmap
• L_MaskConvolutionBitmap
• L_MosaicTilesBitmap
• L_OffsetBitmap
• L_PerspectiveBitmap
• L_PlasmaFilterBitmap
• L_PointillistBitmap
• L_RomanMosaicBitmap
• L_VignetteBitmap
• L_ZigZagBitmap

Topics

• Raster Image Functions: Artistic Effects
• Applying Artistic Effects

Example

This example loads a bitmap and generates a linear lighting effect with a center at (uXOrigin,uYOrigin).

L_INT FunctionalLightBitmapExample(L_VOID) { L_INT nRet; BITMAPHANDLE LeadBitmap; /* Bitmap handle to hold the loaded image. */ LIGHTPARAMS LightParams; /* 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; /* Initialize all needed members in the LIGHTPARAMS structure to achieve the linear lighting effect. */ LightParams.uStructSize = sizeof(LIGHTPARAMS); LightParams.uRAmp = 75; LightParams.uFlags = FL_LINEAR_QUADRATIC | FL_LINEAR_OUTER; LightParams.uXOrigin = (L_UINT)(LeadBitmap.Width / 2); LightParams.uYOrigin = (L_UINT)(LeadBitmap.Height / 2); /* Apply the linear lighting effect */ nRet = L_FunctionalLightBitmap(&LeadBitmap, &LightParams, 0); 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; }

LEADTOOLS Raster Imaging C API Help