imutil.hpp

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// $image\imutil.hpp 1.5 milbo$
// Warning: this is raw research code -- expect it to be quite messy.

#if !defined(imutil_hpp)
#define imutil_hpp

#define IM_NEAREST_PIXEL		0	// values for fBilinear etc parameters
#define IM_BILINEAR 			1
#define IM_AVERAGE_ALL 			2

#define IM_NO_WIDTH_DIVISIBLE_BY_4	0	// values for fWidthDivisibleBy4 parameter
#define IM_WIDTH_DIVISIBLE_BY_4		1

#define IM_CLIP	 				0	// values for fExtend parameter
#define IM_EXTEND				1

void MoveImage(Image &Img, 															// io
				int nxShift, int nyShift, bool fVerbose=false, bool fExtend=false);	// in

void CropImage(Image &Img,																			// io
			   int nTopCrop, int nBottomCrop, int nLeftCrop, int nRightCrop, bool fVerbose=false);	// in

void FlipImage(Image &Img,									// io
			   bool fVertical=false, bool fVerbose=false);	// in

void ScaleImage(Image &Img, 																			// io
				const int nNewWidth, const int nNewHeight, const bool fVerbose, const bool fBilinear);	// in

void ExtendImage(Image &Img, 															// io
					int nLeft, int nRight, int nTop, int nBottom, bool fVerbose=false);	// in

void ReduceImage(Image &Img, 											// io
				 double Scale, int ReduceMethod, bool fVerbose=false);	// in

void ReduceImageAssign(Image &Img, 																	// io
						const Image &InImg, double Scale, int ReduceMethod, bool fVerbose=false);	// in

void ExtractImage(Image &Img, 														// io
				  int nNewWidth, int nNewHeight,   									// in
				  double nxMid, double nyMid, double Scale, double Angle, 			// in
				  bool fVerbose=false, bool fBilinear=false, bool fExtend=false);	// in

void DrawVerticalLine(Image &Img, 						// io
					  int ix, bool fVerbose=false);		// in

void DrawHorizontalLine(Image &Img, 					// io
						int iy, bool fVerbose=false);	// in

void FillImage(Image &Img, byte Color);
void FillRectangle(Image &Img, int ix1, int iy1, int ix2, int iy2, int Color);
void ReduceSizeBy1_2(Image &Dest, Image &Src);
void GetImageSize(int &width, int &height, char sPath[]);

extern inline void SwapImages(Image &Img0, Image &Img1);

#endif // imutil_hpp