static inline void infoTile(const QString & message, Tile * tile)
{
if (tile == NULL) {
DebugDialog::debug("infoTile: tile is NULL");
return;
}
DebugDialog::debug(QString("tile:%1 lb:%2 bl:%3 tr:%4 rt%5")
.arg((long) tile, 0, 16)
.arg((long) tile->ti_lb, 0, 16)
.arg((long) tile->ti_bl, 0, 16)
.arg((long) tile->ti_tr, 0, 16)
.arg((long) tile->ti_rt, 0, 16));
DebugDialog::debug(QString("%1 tile:%2 l:%3 t:%4 w:%5 h:%6 type:%7 body:%8")
.arg(message)
.arg((long) tile, 0, 16)
.arg(LEFT(tile))
.arg(YMIN(tile))
.arg(WIDTH(tile))
.arg(HEIGHT(tile))
.arg(TiGetType(tile))
.arg((long) TiGetBody(tile), 0, 16)
);
}
static void miSubtractSpans (SpanGroup *spanGroup, Spans *sub)
{
int i, subCount, spansCount;
int ymin, ymax, xmin, xmax;
Spans *spans;
DDXPointPtr subPt, spansPt;
int *subWid, *spansWid;
int extra;
ymin = YMIN(sub);
ymax = YMAX(sub);
spans = spanGroup->group;
for (i = spanGroup->count; i; i--, spans++) {
if (YMIN(spans) <= ymax && ymin <= YMAX(spans)) {
subCount = sub->count;
subPt = sub->points;
subWid = sub->widths;
spansCount = spans->count;
spansPt = spans->points;
spansWid = spans->widths;
extra = 0;
for (;;)
{
while (spansCount && spansPt->y < subPt->y)
{
spansPt++; spansWid++; spansCount--;
}
if (!spansCount)
break;
while (subCount && subPt->y < spansPt->y)
{
subPt++; subWid++; subCount--;
}
if (!subCount)
break;
if (subPt->y == spansPt->y)
{
xmin = subPt->x;
xmax = xmin + *subWid;
if (xmin >= spansPt->x + *spansWid || spansPt->x >= xmax)
{
;
}
else if (xmin <= spansPt->x)
{
if (xmax >= spansPt->x + *spansWid)
{
memmove (spansPt, spansPt + 1, sizeof *spansPt * (spansCount - 1));
memmove (spansWid, spansWid + 1, sizeof *spansWid * (spansCount - 1));
spansPt--;
spansWid--;
spans->count--;
extra++;
}
else
{
*spansWid = *spansWid - (xmax - spansPt->x);
spansPt->x = xmax;
}
}
else
{
if (xmax >= spansPt->x + *spansWid)
{
*spansWid = xmin - spansPt->x;
}
else
{
if (!extra) {
DDXPointPtr newPt;
int *newwid;
#define EXTRA 8
newPt = (DDXPointPtr) realloc(spans->points, (spans->count + EXTRA) * sizeof (DDXPointRec));
if (!newPt)
break;
spansPt = newPt + (spansPt - spans->points);
spans->points = newPt;
newwid = (int *) realloc(spans->widths, (spans->count + EXTRA) * sizeof (int));
if (!newwid)
break;
spansWid = newwid + (spansWid - spans->widths);
spans->widths = newwid;
extra = EXTRA;
}
memmove (spansPt + 1, spansPt, sizeof *spansPt * (spansCount));
memmove (spansWid + 1, spansWid, sizeof *spansWid * (spansCount));
spans->count++;
extra--;
*spansWid = xmin - spansPt->x;
spansWid++;
spansPt++;
*spansWid = *spansWid - (xmax - spansPt->x);
spansPt->x = xmax;
}
}
}
spansPt++; spansWid++; spansCount--;
}
}
}
}