file: brush.h


/*
 * brush.h - Contains definition of brush and prototypes for brush
 *           related functions.
 */

#ifndef _BRUSH_H
#define _BRUSH_H

#include "XmdvTool.h"

/* the different types of brush boundaries */
#define BOUND_STEP    0
#define BOUND_RAMP    1

/* the number of colors to allocate for each boundary */
#define NUM_BOUND_COL    10

/*
 * Brush structure definition
 */
typedef struct {
  double pos[MAXDIM];
  double size[MAXDIM];
  int enable;			/* if this brush is on */
  int display;			/* display this brush? */
  int bound;			/* brush boundary type */
  double bound_offset[MAXDIM];	/* boundary offset from min/max */
} Brush;

    
/* function prototypes */

/* brush.c */
void InitBrush(void);
int ChangeBrush(int);
void ChangeBrushCB(Widget, XtPointer, XtPointer);
void ResizeBrushCB(Widget, XtPointer, XtPointer);
int CheckBrushCoverage(double *point, int brush);
double PercentBrushCoverage(double *point, int brush);
int CoverageRank(double *point);
int PixelFromBrushCoverage(double *point);
void EnableBrushCB(Widget w, XtPointer params, XtPointer call_data);
void DisplayBrushCB(Widget w, XtPointer params, XtPointer call_data);
void BoundaryStepCB(Widget w, XtPointer params, XtPointer call_data);
void BoundaryRampCB(Widget w, XtPointer params, XtPointer call_data);
int BoundaryColorAlloc(int brush_no, int num_colors);
void BoundaryColorFree(int brush_no, int num_colors);
void BoundaryColorInterpolate(int brush_no, int num_colors);

#undef P


#endif /* _BRUSH_H */



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