/* $Xorg: mpgeom.h,v 1.3 2000/08/17 19:47:46 cpqbld Exp $ */
/**** module mpgeom.h ****/
/******************************************************************************

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******************************************************************************
  
	mpgeom.h -- DDXIE MI prototype Geometry definitions
  
	Ben Fahy -- AGE Logic, Inc. June 1993
  
*****************************************************************************/

#ifndef _XIEH_MPGEOM
#define _XIEH_MPGEOM

/*
 * peTex extension for the Geometry element
 */
typedef struct _mpgeombanddef {
  	int	finished;	/* done with this band */
	int	yOut;		/* what output line we are on */
	int	out_of_bounds;	/* if entire input image is missed */

	double	first_mlow,	/* lowest  input line mapped by first output */
		first_mhigh;	/* highest input line mapped by first output */
	double	last_mlow,	/* lowest  input line mapped by last  output */
		last_mhigh;	/* highest input line mapped by last  output */
	double	global_mlow,	/* lowest  input line mapped, overall 	     */
		global_mhigh;	/* highest input line mapped, overall 	     */

	int	first_ilow,	/* rounded first_mlow   */
		first_ihigh;	/* rounded first_mhigh  */
	int	last_ilow,	/* rounded last_mlow    */
		last_ihigh;	/* rounded last_mlow    */
	int	global_ilow,	/* rounded global_mlow  */
		global_ihigh;	/* rounded global_mlow  */

	/* useful data precalculated for scaling */
	int	*x_locs;
	int	x_start;
	int	x_end;
	int	int_constant;	/* precalculated for Constrained data fill */
	RealPixel flt_constant;	/* precalculated for UnConstrained data fill */

	/* required by general line filling routine */
	int	in_width;
	int	in_height;

	/* keep track of what input lines we've come across */
	int	lo_src_available;
	int	hi_src_available;

	void	(*linefunc) ();
	void	(*fillfunc) ();
  }
  mpGeometryBandRec, *mpGeometryBandPtr;

typedef struct _mpgeometrydef {
  	int	input_line_increases_as_output_line_increases;
	int	input_map_size;
  	mpGeometryBandPtr bandInfo[xieValMaxBands];
  }
  mpGeometryDefRec, *mpGeometryDefPtr;

#endif /* module _XIEH_MPGEOM */