#ifndef MILINE_H
#include "screenint.h"
#include "privates.h"
#define XDECREASING 4
#define YDECREASING 2
#define YMAJOR 1
#define OCTANT1 (1 << (YDECREASING))
#define OCTANT2 (1 << (YDECREASING|YMAJOR))
#define OCTANT3 (1 << (XDECREASING|YDECREASING|YMAJOR))
#define OCTANT4 (1 << (XDECREASING|YDECREASING))
#define OCTANT5 (1 << (XDECREASING))
#define OCTANT6 (1 << (XDECREASING|YMAJOR))
#define OCTANT7 (1 << (YMAJOR))
#define OCTANT8 (1 << (0))
#define XMAJOROCTANTS (OCTANT1 | OCTANT4 | OCTANT5 | OCTANT8)
#define DEFAULTZEROLINEBIAS (OCTANT2 | OCTANT3 | OCTANT4 | OCTANT5)
extern void miSetZeroLineBias(
ScreenPtr ,
unsigned int
);
#define X_AXIS 0
#define Y_AXIS 1
#define OUT_LEFT 0x08
#define OUT_RIGHT 0x04
#define OUT_ABOVE 0x02
#define OUT_BELOW 0x01
#define OUTCODES(_result, _x, _y, _pbox) \
if ( (_x) < (_pbox)->x1) (_result) |= OUT_LEFT; \
else if ( (_x) >= (_pbox)->x2) (_result) |= OUT_RIGHT; \
if ( (_y) < (_pbox)->y1) (_result) |= OUT_ABOVE; \
else if ( (_y) >= (_pbox)->y2) (_result) |= OUT_BELOW;
#define MIOUTCODES(outcode, x, y, xmin, ymin, xmax, ymax) \
{\
if (x < xmin) outcode |= OUT_LEFT;\
if (x > xmax) outcode |= OUT_RIGHT;\
if (y < ymin) outcode |= OUT_ABOVE;\
if (y > ymax) outcode |= OUT_BELOW;\
}
#define SWAPINT(i, j) \
{ int _t = i; i = j; j = _t; }
#define SWAPPT(i, j) \
{ DDXPointRec _t; _t = i; i = j; j = _t; }
#define SWAPINT_PAIR(x1, y1, x2, y2)\
{ int t = x1; x1 = x2; x2 = t;\
t = y1; y1 = y2; y2 = t;\
}
#define miGetZeroLineBias(_pScreen) ((unsigned long) \
dixLookupPrivate(&(_pScreen)->devPrivates, miZeroLineScreenKey))
#define CalcLineDeltas(_x1,_y1,_x2,_y2,_adx,_ady,_sx,_sy,_SX,_SY,_octant) \
(_octant) = 0; \
(_sx) = (_SX); \
if (((_adx) = (_x2) - (_x1)) < 0) { \
(_adx) = -(_adx); \
(_sx = -(_sx)); \
(_octant) |= XDECREASING; \
} \
(_sy) = (_SY); \
if (((_ady) = (_y2) - (_y1)) < 0) { \
(_ady) = -(_ady); \
(_sy = -(_sy)); \
(_octant) |= YDECREASING; \
}
#define SetYMajorOctant(_octant) ((_octant) |= YMAJOR)
#define FIXUP_ERROR(_e, _octant, _bias) \
(_e) -= (((_bias) >> (_octant)) & 1)
#define IsXMajorOctant(_octant) (!((_octant) & YMAJOR))
#define IsYMajorOctant(_octant) ((_octant) & YMAJOR)
#define IsXDecreasingOctant(_octant) ((_octant) & XDECREASING)
#define IsYDecreasingOctant(_octant) ((_octant) & YDECREASING)
extern DevPrivateKey miZeroLineScreenKey;
extern int miZeroClipLine(
int ,
int ,
int ,
int ,
int * ,
int * ,
int * ,
int * ,
unsigned int ,
unsigned int ,
int * ,
int * ,
int ,
unsigned int ,
int ,
int
);
#endif