/* $XFree86: xc/programs/Xserver/mi/mifillarc.h,v 3.3 1998/10/04 09:39:27 dawes Exp $ *//************************************************************Copyright 1989, 1998  The Open GroupAll Rights Reserved.The above copyright notice and this permission notice shall be included inall copies or substantial portions of the Software.THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS ORIMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL THEOPEN GROUP BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER INAN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR INCONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.Except as contained in this notice, the name of The Open Group shall not beused in advertising or otherwise to promote the sale, use or other dealingsin this Software without prior written authorization from The Open Group.********************************************************//* $TOG: mifillarc.h /main/11 1998/02/09 14:46:57 kaleb $ */#ifndef MIFILLARC_H#define MIFILLARC_H 1#define FULLCIRCLE (360 * 64)typedef struct _miFillArc {    int xorg, yorg;    int y;    int dx, dy;    int e;    int ym, yk, xm, xk;} miFillArcRec;/* could use 64-bit integers */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;    gboolean edge1_top, edge2_top;    gboolean 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(gpointer data, guint id);extern struct finalSpan *realAllocSpan(void);extern void miFillArcSetup(miArc *arc, miFillArcRec *info);extern void miFillArcDSetup(miArc *arc, miFillArcDRec *info);extern void miEllipseAngleToSlope(int angle, int width, int height, int *dxp,                                  int *dyp, double *d_dxp, double *d_dyp);extern void miFillArcSliceSetup(miArc *arc, miArcSliceRec *slice, GdkGC* pGC);#endif