#ifndef __MIFILLARC_H__
#define __MIFILLARC_H__
#define FULLCIRCLE (360 * 64)
typedef struct _miFillArc {
int xorg, yorg;
int y;
int dx, dy;
int e;
int ym, yk, xm, xk;
} miFillArcRec;
typedef struct _miFillArcD {
int xorg, yorg;
int y;
int dx, dy;
double e;
double ym, yk, xm, xk;
} miFillArcDRec;
#define miFillArcEmpty(arc) (!(arc)->angle2 || \
!(arc)->width || !(arc)->height || \
(((arc)->width == 1) && ((arc)->height & 1)))
#define miCanFillArc(arc) (((arc)->width == (arc)->height) || \
(((arc)->width <= 800) && ((arc)->height <= 800)))
#define MIFILLARCSETUP() \
x = 0; \
y = info.y; \
e = info.e; \
xk = info.xk; \
xm = info.xm; \
yk = info.yk; \
ym = info.ym; \
dx = info.dx; \
dy = info.dy; \
xorg = info.xorg; \
yorg = info.yorg
#define MIFILLARCSTEP(slw) \
e += yk; \
while (e >= 0) \
{ \
x++; \
xk -= xm; \
e += xk; \
} \
y--; \
yk -= ym; \
slw = (x << 1) + dx; \
if ((e == xk) && (slw > 1)) \
slw--
#define MIFILLCIRCSTEP(slw) MIFILLARCSTEP(slw)
#define MIFILLELLSTEP(slw) MIFILLARCSTEP(slw)
#define miFillArcLower(slw) (((y + dy) != 0) && ((slw > 1) || (e != xk)))
typedef struct _miSliceEdge {
int x;
int stepx;
int deltax;
int e;
int dy;
int dx;
} miSliceEdgeRec, *miSliceEdgePtr;
typedef struct _miArcSlice {
miSliceEdgeRec edge1, edge2;
int min_top_y, max_top_y;
int min_bot_y, max_bot_y;
Bool edge1_top, edge2_top;
Bool flip_top, flip_bot;
} miArcSliceRec;
#define MIARCSLICESTEP(edge) \
edge.x -= edge.stepx; \
edge.e -= edge.dx; \
if (edge.e <= 0) \
{ \
edge.x -= edge.deltax; \
edge.e += edge.dy; \
}
#define miFillSliceUpper(slice) \
((y >= slice.min_top_y) && (y <= slice.max_top_y))
#define miFillSliceLower(slice) \
((y >= slice.min_bot_y) && (y <= slice.max_bot_y))
#define MIARCSLICEUPPER(xl,xr,slice,slw) \
xl = xorg - x; \
xr = xl + slw - 1; \
if (slice.edge1_top && (slice.edge1.x < xr)) \
xr = slice.edge1.x; \
if (slice.edge2_top && (slice.edge2.x > xl)) \
xl = slice.edge2.x;
#define MIARCSLICELOWER(xl,xr,slice,slw) \
xl = xorg - x; \
xr = xl + slw - 1; \
if (!slice.edge1_top && (slice.edge1.x > xl)) \
xl = slice.edge1.x; \
if (!slice.edge2_top && (slice.edge2.x < xr)) \
xr = slice.edge2.x;
#define MIWIDEARCSETUP(x,y,dy,slw,e,xk,xm,yk,ym) \
x = 0; \
y = slw >> 1; \
yk = y << 3; \
xm = 8; \
ym = 8; \
if (dy) \
{ \
xk = 0; \
if (slw & 1) \
e = -1; \
else \
e = -(y << 2) - 2; \
} \
else \
{ \
y++; \
yk += 4; \
xk = -4; \
if (slw & 1) \
e = -(y << 2) - 3; \
else \
e = - (y << 3); \
}
#define MIFILLINARCSTEP(slw) \
ine += inyk; \
while (ine >= 0) \
{ \
inx++; \
inxk -= inxm; \
ine += inxk; \
} \
iny--; \
inyk -= inym; \
slw = (inx << 1) + dx; \
if ((ine == inxk) && (slw > 1)) \
slw--
#define miFillInArcLower(slw) (((iny + dy) != 0) && \
((slw > 1) || (ine != inxk)))
extern int miFreeArcCache(
pointer ,
XID
);
extern struct finalSpan *realAllocSpan(
void
);
extern void miFillArcSetup(
xArc * ,
miFillArcRec *
);
extern void miFillArcDSetup(
xArc * ,
miFillArcDRec *
);
extern void miEllipseAngleToSlope(
int ,
int ,
int ,
int * ,
int * ,
double * ,
double *
);
extern void miFillArcSliceSetup(
xArc * ,
miArcSliceRec * ,
GCPtr
);
#endif