#include "X.h"
#include "gcstruct.h"
#include "windowstr.h"
#include "pixmapstr.h"
#include "regionstr.h"
#include "scrnintstr.h"
#include "mistruct.h"
#include "ipl.h"
#include "iplrrop.h"
#include "iplmskbits.h"
void
INTER_RROP_NAME(iplFillPoly1Rect) (pDrawable, pGC, shape, mode, count, ptsIn)
DrawablePtr pDrawable;
GCPtr pGC;
int count;
DDXPointPtr ptsIn;
{
iplPrivGCPtr devPriv;
int ngwidth;
unsigned short *addrl, *addr;
int maxy;
int origin;
register int vertex1, vertex2;
int c;
BoxPtr extents;
int clip;
int y;
int *vertex1p, *vertex2p;
int *endp;
int x1, x2;
int dx1, dx2;
int dy1, dy2;
int e1, e2;
int step1, step2;
int sign1, sign2;
int h;
int l, r;
INTER_DECLAREG(mask);
INTER_DECLAREG(bits);
int nmiddle;
INTER_RROP_DECLARE
bits=~0;
if (mode == CoordModePrevious)
{
miFillPolygon (pDrawable, pGC, shape, mode, count, ptsIn);
return;
}
devPriv = iplGetGCPrivate(pGC);
#ifdef NO_ONE_RECT
if (REGION_NUM_RECTS(pGC->pCompositeClip) != 1)
{
miFillPolygon (pDrawable, pGC, shape, mode, count, ptsIn);
return;
}
#endif
origin = *((int *) &pDrawable->x);
origin -= (origin & 0x8000) << 1;
extents = &pGC->pCompositeClip->extents;
INTER_RROP_FETCH_GCPRIV(devPriv);
vertex1 = *((int *) &extents->x1) - origin;
vertex2 = *((int *) &extents->x2) - origin - 0x00010001;
clip = 0;
y = 32767;
maxy = 0;
vertex2p = (int *) ptsIn;
endp = vertex2p + count;
if (shape == Convex)
{
while (count--)
{
c = *vertex2p;
clip |= (c - vertex1) | (vertex2 - c);
c = intToY(c);
if (c < y)
{
y = c;
vertex1p = vertex2p;
}
vertex2p++;
if (c > maxy)
maxy = c;
}
}
else
{
int yFlip = 0;
dx1 = 1;
x2 = -1;
x1 = -1;
while (count--)
{
c = *vertex2p;
clip |= (c - vertex1) | (vertex2 - c);
c = intToY(c);
if (c < y)
{
y = c;
vertex1p = vertex2p;
}
vertex2p++;
if (c > maxy)
maxy = c;
if (c == x1)
continue;
if (dx1 > 0)
{
if (x2 < 0)
x2 = c;
else
dx2 = dx1 = (c - x1) >> 31;
}
else
if ((c - x1) >> 31 != dx1)
{
dx1 = ~dx1;
yFlip++;
}
x1 = c;
}
x1 = (x2 - c) >> 31;
if (x1 != dx1)
yFlip++;
if (x1 != dx2)
yFlip++;
if (yFlip != 2)
clip = 0x8000;
}
if (y == maxy)
return;
if (clip & 0x80008000)
{
miFillPolygon (pDrawable, pGC, shape, mode, vertex2p - (int *) ptsIn, ptsIn);
return;
}
#define AddrYPlus(a,y) ((a) + (y) * ngwidth)
iplGetGroupWidthAndPointer(pDrawable, ngwidth, addrl);
addrl = AddrYPlus(addrl,y + pDrawable->y);
origin = intToX(origin);
vertex2p = vertex1p;
vertex2 = vertex1 = *vertex2p++;
if (vertex2p == endp)
vertex2p = (int *) ptsIn;
#define Setup(c,x,vertex,dx,dy,e,sign,step) {\
x = intToX(vertex); \
if (dy = intToY(c) - y) { \
dx = intToX(c) - x; \
step = 0; \
if (dx >= 0) \
{ \
e = 0; \
sign = 1; \
if (dx >= dy) {\
step = dx / dy; \
dx = dx % dy; \
} \
} \
else \
{ \
e = 1 - dy; \
sign = -1; \
dx = -dx; \
if (dx >= dy) { \
step = - (dx / dy); \
dx = dx % dy; \
} \
} \
} \
x += origin; \
vertex = c; \
}
#define Step(x,dx,dy,e,sign,step) {\
x += step; \
if ((e += dx) > 0) \
{ \
x += sign; \
e -= dy; \
} \
}
for (;;)
{
if (y == intToY(vertex1))
{
do
{
if (vertex1p == (int *) ptsIn)
vertex1p = endp;
c = *--vertex1p;
Setup (c,x1,vertex1,dx1,dy1,e1,sign1,step1)
} while (y >= intToY(vertex1));
h = dy1;
}
else
{
Step(x1,dx1,dy1,e1,sign1,step1)
h = intToY(vertex1) - y;
}
if (y == intToY(vertex2))
{
do
{
c = *vertex2p++;
if (vertex2p == endp)
vertex2p = (int *) ptsIn;
Setup (c,x2,vertex2,dx2,dy2,e2,sign2,step2)
} while (y >= intToY(vertex2));
if (dy2 < h)
h = dy2;
}
else
{
Step(x2,dx2,dy2,e2,sign2,step2)
if ((c = (intToY(vertex2) - y)) < h)
h = c;
}
y += h;
for (;;)
{
l = x1;
r = x2;
nmiddle = x2 - x1;
if (nmiddle < 0)
{
nmiddle = -nmiddle;
l = x2;
r = x1;
}
c = l & INTER_PIM;
l -= c;
addr = addrl + (l >> INTER_PGSH) * INTER_PLANES;
if (c + nmiddle < INTER_PPG)
{
mask = (bits >> c) ^ (bits >> (c+nmiddle));
INTER_RROP_SOLID_MASK(addr,mask);
}
else
{
if (c)
{
mask = bits >> c;
INTER_RROP_SOLID_MASK(addr,mask);
nmiddle += c - INTER_PPG;
INTER_NEXT_GROUP(addr);
}
nmiddle >>= INTER_PGSH;
while (--nmiddle >= 0) {
INTER_RROP_SOLID(addr); INTER_NEXT_GROUP(addr);
}
if (mask = ~(bits >> (r & INTER_PIM)))
INTER_RROP_SOLID_MASK(addr,mask);
}
if (!--h)
break;
addrl = AddrYPlus (addrl, 1);
Step(x1,dx1,dy1,e1,sign1,step1)
Step(x2,dx2,dy2,e2,sign2,step2)
}
if (y == maxy)
break;
addrl = AddrYPlus (addrl, 1);
}
}