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Implemented sub_region_complex and or_region_complex. They divide the plane into horizontal bands, then pass the area to r_sub or r_or, which do the real work. Tested xxx_region_complex with R5's r_or and r_sub: they work fine. Just those last functions are missing now. Documented a bit more the private C functions.

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git-svn-id: file:///srv/svn/repos/haiku/trunk/current@3805 a95241bf-73f2-0310-859d-f6bbb57e9c96
This commit is contained in:
Stefano Ceccherini 2003-07-02 07:16:11 +00:00
parent 78aa9c8040
commit 319b95be85
1 changed files with 112 additions and 4 deletions
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118
src/kits/interface/Region.cpp
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@ -40,6 +40,8 @@ clear_region(BRegion *region)
void
cleanup_region_1(BRegion *region)
{
PRINT(("%s\n", __PRETTY_FUNCTION__));
clipping_rect testRect =
{
1, 1,
@ -134,6 +136,8 @@ sort_trans(long *lptr1, long *lptr2, long count)
void
cleanup_region_horizontal(BRegion *region)
{
PRINT(("%s\n", __PRETTY_FUNCTION__));
clipping_rect testRect =
{
1, 1,
@ -238,6 +242,7 @@ and_region_complex(BRegion *first, BRegion *second, BRegion *dest)
}
void
and_region_1_to_n(BRegion *first, BRegion *second, BRegion *dest)
{
@ -267,6 +272,14 @@ and_region_1_to_n(BRegion *first, BRegion *second, BRegion *dest)
}
/*! \brief Modify the destination region to be the intersection of the two given regions.
\param first The first region to be intersected.
\param second The second region to be intersected.
\param dest The destination region.
This function is a sort of method selector. It checks for some special
cases, then it calls the appropriate specialized function.
*/
void
and_region(BRegion *first, BRegion *second, BRegion *dest)
{
@ -311,6 +324,7 @@ append_region(BRegion *first, BRegion *second, BRegion *dest)
dest->_AddRect(second->data[c]);
}
/*
void
r_or(long, long, BRegion *first, BRegion *second, BRegion *dest, long *L1, long *L2)
@ -318,12 +332,51 @@ r_or(long, long, BRegion *first, BRegion *second, BRegion *dest, long *L1, long
}
*/
/*
/*! \brief Divides the plane into horizontal bands, then passes those bands to r_or
which does the real work.
\param first The first region to be or-ed.
\param second The second region to be or-ed.
\param dest The destination region.
*/
void
or_region_complex(BRegion *first, BRegion *second, BRegion *dest)
{
PRINT(("%s\n", __PRETTY_FUNCTION__));
long a = 0, b = 0;
int32 top;
int32 bottom = min_c(first->bound.top, second->bound.top) - 1;
do {
top = bottom + 1;
bottom = 0x10000000;
for (int x = a; x < first->count; x++) {
int32 n = first->data[x].top - 1;
if (n >= top && n < bottom)
bottom = n;
if (first->data[x].bottom >= top && first->data[x].bottom < bottom)
bottom = first->data[x].bottom;
}
for (int x = b; x < second->count; x++) {
int32 n = second->data[x].top;
if (n >= top && n < bottom)
bottom = n;
if (second->data[x].bottom >= top && second->data[x].bottom < bottom)
bottom = second->data[x].bottom;
}
// We can stand a region which extends to 0x10000000, not more
if (bottom >= 0x10000000)
break;
r_or(top, bottom, first, second, dest, &a, &b);
} while (true);
cleanup_region(dest);
}
*/
void
or_region_1_to_n(BRegion *first, BRegion *second, BRegion *dest)
@ -390,6 +443,14 @@ or_region_no_x(BRegion *first, BRegion *second, BRegion *dest)
}
/*! \brief Modify the destination region to be the union of the two given regions.
\param first The first region to be merged.
\param second The second region to be merged.
\param dest The destination region.
This function is a sort of method selector. It checks for some special
cases, then it calls the appropriate specialized function.
*/
void
or_region(BRegion *first, BRegion *second, BRegion *dest)
{
@ -435,13 +496,60 @@ or_region(BRegion *first, BRegion *second, BRegion *dest)
}
}
/*
/*! \brief Divides the plane into horizontal bands, then passes those bands to r_sub
which does the real work.
\param first The subtraend region.
\param second The minuend region.
\param dest The destination region.
*/
void
sub_region_complex(BRegion *first, BRegion *second, BRegion *dest)
{
}
*/
PRINT(("%s\n", __PRETTY_FUNCTION__));
long a = 0, b = 0;
int32 top;
int32 bottom = min_c(first->bound.top, second->bound.top) - 1;
do {
top = bottom + 1;
bottom = 0x10000000;
for (int x = a; x < first->count; x++) {
int32 n = first->data[x].top - 1;
if (n >= top && n < bottom)
bottom = n;
if (first->data[x].bottom >= top && first->data[x].bottom < bottom)
bottom = first->data[x].bottom;
}
for (int x = b; x < second->count; x++) {
int32 n = second->data[x].top;
if (n >= top && n < bottom)
bottom = n;
if (second->data[x].bottom >= top && second->data[x].bottom < bottom)
bottom = second->data[x].bottom;
}
if (bottom >= 0x10000000)
break;
r_sub(top, bottom, first, second, dest, &a, &b);
} while (true);
cleanup_region(dest);
}
/*! \brief Modify the destination region to be the difference of the two given regions.
\param first The subtraend region.
\param second The minuend region.
\param dest The destination region.
This function is a sort of method selector. It checks for some special
cases, then it calls the appropriate specialized function.
*/
void
sub_region(BRegion *first, BRegion *second, BRegion *dest)
{