RegionSupport accepts, as parameters, references to BRegions (consts when possible) instead of pointers. Note: this is not a functional change
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@12936 a95241bf-73f2-0310-859d-f6bbb57e9c96
This commit is contained in:
Stefano Ceccherini
parent
68c1f3d2eb
commit
1c49767038
@ -1,5 +1,5 @@
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//------------------------------------------------------------------------------
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// Copyright (c) 2003, OpenBeOS
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// Copyright (c) 2003-2005, Haiku, Inc.
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//
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// Permission is hereby granted, free of charge, to any person obtaining a
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// copy of this software and associated documentation files (the "Software"),
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@ -39,15 +39,12 @@
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// like this.
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// Standard Includes -----------------------------------------------------------
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#include <cstdlib>
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#include <cstring>
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// System Includes -------------------------------------------------------------
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#include <Debug.h>
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#include <Region.h>
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// Private Includes -------------------------------------------------------------
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#include <clipping.h>
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#include <RegionSupport.h>
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@ -62,7 +59,7 @@ BRegion::BRegion()
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{
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data = (clipping_rect *)malloc(data_size * sizeof(clipping_rect));
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Support::ZeroRegion(this);
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Support::ZeroRegion(*this);
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}
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@ -191,9 +188,8 @@ BRegion::Set(clipping_rect newBounds)
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count = 1;
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data[0] = newBounds;
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bound = newBounds;
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}
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else
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Support::ZeroRegion(this);
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} else
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Support::ZeroRegion(*this);
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}
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@ -303,7 +299,7 @@ BRegion::OffsetBy(int32 dh, int32 dv)
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void
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BRegion::MakeEmpty()
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{
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Support::ZeroRegion(this);
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Support::ZeroRegion(*this);
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}
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@ -328,8 +324,8 @@ BRegion::Include(clipping_rect rect)
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region.Set(rect);
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Support::OrRegion(this, ®ion, &newRegion);
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Support::CopyRegion(&newRegion, this);
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Support::OrRegion(*this, region, newRegion);
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Support::CopyRegion(newRegion, *this);
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}
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@ -341,8 +337,8 @@ BRegion::Include(const BRegion *region)
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{
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BRegion newRegion;
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Support::OrRegion(this, const_cast<BRegion *>(region), &newRegion);
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Support::CopyRegion(&newRegion, this);
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Support::OrRegion(*this, *region, newRegion);
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Support::CopyRegion(newRegion, *this);
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}
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@ -367,8 +363,8 @@ BRegion::Exclude(clipping_rect rect)
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region.Set(rect);
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Support::SubRegion(this, ®ion, &newRegion);
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Support::CopyRegion(&newRegion, this);
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Support::SubRegion(*this, region, newRegion);
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Support::CopyRegion(newRegion, *this);
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}
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@ -380,8 +376,8 @@ BRegion::Exclude(const BRegion *region)
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{
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BRegion newRegion;
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Support::SubRegion(this, const_cast<BRegion *>(region), &newRegion);
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Support::CopyRegion(&newRegion, this);
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Support::SubRegion(*this, *region, newRegion);
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Support::CopyRegion(newRegion, *this);
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}
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@ -393,8 +389,8 @@ BRegion::IntersectWith(const BRegion *region)
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{
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BRegion newRegion;
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Support::AndRegion(this, const_cast<BRegion *>(region), &newRegion);
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Support::CopyRegion(&newRegion, this);
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Support::AndRegion(*this, *region, newRegion);
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Support::CopyRegion(newRegion, *this);
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}
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@ -64,15 +64,15 @@ using namespace std;
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\param region The region to be zeroed.
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*/
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void
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BRegion::Support::ZeroRegion(BRegion *region)
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BRegion::Support::ZeroRegion(BRegion ®ion)
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{
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CALLED();
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region->count = 0;
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region->bound.left = kMaxPositive;
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region->bound.top = kMaxPositive;
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region->bound.right = kMaxNegative;
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region->bound.bottom = kMaxNegative;
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region.count = 0;
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region.bound.left = kMaxPositive;
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region.bound.top = kMaxPositive;
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region.bound.right = kMaxNegative;
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region.bound.bottom = kMaxNegative;
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}
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@ -81,18 +81,18 @@ BRegion::Support::ZeroRegion(BRegion *region)
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\param region The region to be cleared.
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*/
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void
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BRegion::Support::ClearRegion(BRegion *region)
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BRegion::Support::ClearRegion(BRegion ®ion)
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{
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CALLED();
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// TODO: What is it used for ?
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// Could be that a cleared region represents an infinite one ?
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region->count = 0;
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region->bound.left = 0xfffffff;
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region->bound.top = 0xfffffff;
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region->bound.right = 0xf0000001;
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region->bound.bottom = 0xf0000001;
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region.count = 0;
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region.bound.left = 0xfffffff;
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region.bound.top = 0xfffffff;
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region.bound.right = 0xf0000001;
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region.bound.bottom = 0xf0000001;
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}
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@ -101,25 +101,22 @@ BRegion::Support::ClearRegion(BRegion *region)
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\param dest The destination region.
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*/
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void
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BRegion::Support::CopyRegion(BRegion *source, BRegion *dest)
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BRegion::Support::CopyRegion(const BRegion &source, BRegion &dest)
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{
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CALLED();
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ASSERT(source);
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ASSERT(dest);
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ASSERT(source != dest);
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// If there is not enough memory, allocate
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if (dest->data_size < source->count) {
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free(dest->data);
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dest->data_size = source->count + 8;
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dest->data = (clipping_rect *)malloc(dest->data_size * sizeof(clipping_rect));
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if (dest.data_size < source.count) {
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free(dest.data);
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dest.data_size = source.count + 8;
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dest.data = (clipping_rect *)malloc(dest.data_size * sizeof(clipping_rect));
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}
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dest->count = source->count;
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dest.count = source.count;
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// Copy rectangles and bounds.
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memcpy(dest->data, source->data, source->count * sizeof(clipping_rect));
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dest->bound = source->bound;
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memcpy(dest.data, source.data, source.count * sizeof(clipping_rect));
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dest.bound = source.bound;
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}
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@ -132,27 +129,25 @@ BRegion::Support::CopyRegion(BRegion *source, BRegion *dest)
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cases, then it calls the appropriate specialized function.
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*/
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void
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BRegion::Support::AndRegion(BRegion *first, BRegion *second, BRegion *dest)
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BRegion::Support::AndRegion(const BRegion &first, const BRegion &second,
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BRegion &dest)
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{
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CALLED();
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ASSERT(first);
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ASSERT(second);
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ASSERT(dest);
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clipping_rect intersection = sect_rect(first->bound, second->bound);
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clipping_rect intersection = sect_rect(first.bound, second.bound);
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if (first->count == 0 || second->count == 0 || !valid_rect(intersection))
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if (first.count == 0 || second.count == 0 || !valid_rect(intersection))
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ZeroRegion(dest);
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else if (first->count == 1 && second->count == 1) {
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dest->data[0] = intersection;
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dest->bound = intersection;
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dest->count = 1;
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else if (first.count == 1 && second.count == 1) {
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dest.data[0] = intersection;
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dest.bound = intersection;
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dest.count = 1;
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} else if (first->count > 1 && second->count == 1)
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} else if (first.count > 1 && second.count == 1)
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AndRegion1ToN(second, first, dest);
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else if (first->count == 1 && second->count > 1)
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else if (first.count == 1 && second.count > 1)
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AndRegion1ToN(first, second, dest);
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else
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@ -169,47 +164,45 @@ BRegion::Support::AndRegion(BRegion *first, BRegion *second, BRegion *dest)
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cases, then it calls the appropriate specialized function.
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*/
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void
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BRegion::Support::OrRegion(BRegion *first, BRegion *second, BRegion *dest)
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BRegion::Support::OrRegion(const BRegion &first, const BRegion &second,
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BRegion &dest)
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{
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CALLED();
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ASSERT(first);
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ASSERT(second);
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ASSERT(dest);
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BRegion *regionA, *regionB;
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// A little trick, to save some work...
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if (first->count != 0) {
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regionA = first;
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regionB = second;
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const BRegion *regionA;
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const BRegion *regionB;
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if (first.count != 0) {
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regionA = &first;
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regionB = &second;
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} else {
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regionA = second;
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regionB = first;
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regionA = &second;
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regionB = &first;
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}
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if (regionB->count == 0)
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CopyRegion(regionA, dest);
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CopyRegion(*regionA, dest);
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else {
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if (regionB->bound.top > regionA->bound.bottom)
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AppendRegion(regionA, regionB, dest);
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AppendRegion(*regionA, *regionB, dest);
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else if (regionA->bound.top > regionB->bound.bottom)
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AppendRegion(regionB, regionA, dest);
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AppendRegion(*regionB, *regionA, dest);
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else if (regionA->bound.left > regionB->bound.right)
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OrRegionNoX(regionB, regionA, dest);
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OrRegionNoX(*regionB, *regionA, dest);
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else if (regionB->bound.left > regionA->bound.right)
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OrRegionNoX(regionA, regionB, dest);
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OrRegionNoX(*regionA, *regionB, dest);
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else if (regionA->count == 1)
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OrRegion1ToN(regionA, regionB, dest);
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OrRegion1ToN(*regionA, *regionB, dest);
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else if (regionB->count == 1)
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OrRegion1ToN(regionB, regionA, dest);
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OrRegion1ToN(*regionB, *regionA, dest);
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else
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OrRegionComplex(regionA, regionB, dest);
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OrRegionComplex(*regionA, *regionB, dest);
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}
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}
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@ -223,17 +216,14 @@ BRegion::Support::OrRegion(BRegion *first, BRegion *second, BRegion *dest)
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cases, then it calls the appropriate specialized function.
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*/
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void
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BRegion::Support::SubRegion(BRegion *first, BRegion *second, BRegion *dest)
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BRegion::Support::SubRegion(const BRegion &first, const BRegion &second,
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BRegion &dest)
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{
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CALLED();
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ASSERT(first);
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ASSERT(second);
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ASSERT(dest);
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if (first->count == 0)
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if (first.count == 0)
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ZeroRegion(dest);
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else if (second->count == 0 || !rects_intersect(first->bound, second->bound))
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else if (second.count == 0 || !rects_intersect(first.bound, second.bound))
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CopyRegion(first, dest);
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else
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@ -245,17 +235,17 @@ BRegion::Support::SubRegion(BRegion *first, BRegion *second, BRegion *dest)
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\param region The region to be cleaned.
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*/
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void
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BRegion::Support::CleanupRegion(BRegion *region)
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BRegion::Support::CleanupRegion(BRegion ®ion)
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{
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CALLED();
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long oldCount;
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do {
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oldCount = region->count;
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oldCount = region.count;
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CleanupRegionVertical(region);
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CleanupRegionHorizontal(region);
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} while (region->count < oldCount);
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} while (region.count < oldCount);
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}
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@ -263,29 +253,29 @@ BRegion::Support::CleanupRegion(BRegion *region)
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\param region The region to be cleaned.
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*/
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void
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BRegion::Support::CleanupRegionVertical(BRegion *region)
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BRegion::Support::CleanupRegionVertical(BRegion ®ion)
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{
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CALLED();
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clipping_rect testRect = { 1, 1, -1, -2 };
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long newCount = -1;
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for (long x = 0; x < region->count; x++) {
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clipping_rect &rect = region->data[x];
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for (long x = 0; x < region.count; x++) {
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clipping_rect &rect = region.data[x];
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if (rect.left == testRect.left && rect.right == testRect.right
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&& rect.top == testRect.bottom + 1) {
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ASSERT(newCount >= 0);
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region->data[newCount].bottom = rect.bottom;
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region.data[newCount].bottom = rect.bottom;
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} else {
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newCount++;
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region->data[newCount] = region->data[x];
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testRect = region->data[x];
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region.data[newCount] = region.data[x];
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testRect = region.data[x];
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}
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}
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region->count = newCount + 1;
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region.count = newCount + 1;
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}
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@ -293,29 +283,29 @@ BRegion::Support::CleanupRegionVertical(BRegion *region)
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\param region The region to be cleaned.
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*/
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void
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BRegion::Support::CleanupRegionHorizontal(BRegion *region)
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BRegion::Support::CleanupRegionHorizontal(BRegion ®ion)
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{
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CALLED();
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clipping_rect testRect = { 1, 1, -2, -1 };
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long newCount = -1;
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for (long x = 0; x < region->count; x++) {
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clipping_rect &rect = region->data[x];
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for (long x = 0; x < region.count; x++) {
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clipping_rect &rect = region.data[x];
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if (rect.top == testRect.top && rect.bottom == testRect.bottom
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&& rect.left == testRect.right + 1) {
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ASSERT(newCount >= 0);
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region->data[newCount].right = rect.right;
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region.data[newCount].right = rect.right;
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} else {
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newCount++;
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region->data[newCount] = rect;
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region.data[newCount] = rect;
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}
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testRect = region->data[newCount];
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testRect = region.data[newCount];
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}
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region->count = newCount + 1;
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region.count = newCount + 1;
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}
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@ -406,25 +396,23 @@ BRegion::Support::SortTrans(long *lptr1, long *lptr2, long count)
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\param count Amount of additional memory to be allocated in the destination region.
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*/
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void
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BRegion::Support::CopyRegionMore(BRegion *source, BRegion *dest, long count)
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BRegion::Support::CopyRegionMore(const BRegion &source, BRegion &dest,
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long count)
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{
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CALLED();
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ASSERT(source);
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ASSERT(dest);
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ASSERT(source != dest);
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// If there is not enough memory, allocate
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if (dest->data_size < source->count) {
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free(dest->data);
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dest->data_size = source->count + count;
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dest->data = (clipping_rect *)malloc(dest->data_size * sizeof(clipping_rect));
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if (dest.data_size < source.count) {
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free(dest.data);
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dest.data_size = source.count + count;
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dest.data = (clipping_rect *)malloc(dest.data_size * sizeof(clipping_rect));
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}
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dest->count = source->count;
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dest.count = source.count;
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// Copy rectangles and bounds.
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memcpy(dest->data, source->data, source->count * sizeof(clipping_rect));
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dest->bound = source->bound;
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memcpy(dest.data, source.data, source.count * sizeof(clipping_rect));
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dest.bound = source.bound;
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}
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@ -436,25 +424,22 @@ BRegion::Support::CopyRegionMore(BRegion *source, BRegion *dest, long count)
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Called by and_region() when the intersection is complex.
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*/
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void
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BRegion::Support::AndRegionComplex(BRegion *first, BRegion *second, BRegion *dest)
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BRegion::Support::AndRegionComplex(const BRegion &first, const BRegion &second,
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BRegion &dest)
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{
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CALLED();
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ASSERT(first);
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ASSERT(second);
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ASSERT(dest);
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ZeroRegion(dest);
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for (long f = 0; f < first->count; f++) {
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for (long s = 0; s < second->count; s++) {
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clipping_rect testRect = sect_rect(first->data[f], second->data[s]);
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for (long f = 0; f < first.count; f++) {
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for (long s = 0; s < second.count; s++) {
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clipping_rect testRect = sect_rect(first.data[f], second.data[s]);
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if (valid_rect(testRect))
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dest->_AddRect(testRect);
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dest._AddRect(testRect);
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}
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}
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if (dest->count > 1)
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SortRects(dest->data, dest->count);
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if (dest.count > 1)
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SortRects(dest.data, dest.count);
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}
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@ -466,29 +451,26 @@ BRegion::Support::AndRegionComplex(BRegion *first, BRegion *second, BRegion *des
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Called by and_region() when one of the two region contains just one rect.
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*/
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void
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BRegion::Support::AndRegion1ToN(BRegion *first, BRegion *second, BRegion *dest)
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BRegion::Support::AndRegion1ToN(const BRegion &first, const BRegion &second,
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BRegion &dest)
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{
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CALLED();
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ASSERT(first);
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ASSERT(second);
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ASSERT(dest);
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||||
|
||||
// The easy case first: We already know that the regions intersect,
|
||||
// so we check if the first region contains the second.
|
||||
// If it's the case, the intersection is exactly the second region.
|
||||
if (first->bound.top <= second->bound.top
|
||||
&& first->bound.bottom >= second->bound.bottom
|
||||
&& first->bound.left <= second->bound.left
|
||||
&& first->bound.right >= second->bound.right)
|
||||
if (first.bound.top <= second.bound.top
|
||||
&& first.bound.bottom >= second.bound.bottom
|
||||
&& first.bound.left <= second.bound.left
|
||||
&& first.bound.right >= second.bound.right)
|
||||
CopyRegion(second, dest);
|
||||
else {
|
||||
// Otherwise, we check the rect of the first region against the rects
|
||||
// of the second, and we add their intersections to the destination region
|
||||
ZeroRegion(dest);
|
||||
for (long x = 0; x < second->count; x++) {
|
||||
clipping_rect testRect = sect_rect(first->data[0], second->data[x]);
|
||||
for (long x = 0; x < second.count; x++) {
|
||||
clipping_rect testRect = sect_rect(first.data[0], second.data[x]);
|
||||
if (valid_rect(testRect))
|
||||
dest->_AddRect(testRect);
|
||||
dest._AddRect(testRect);
|
||||
}
|
||||
}
|
||||
}
|
||||
@ -504,22 +486,19 @@ BRegion::Support::AndRegion1ToN(BRegion *first, BRegion *second, BRegion *dest)
|
||||
coordinate.
|
||||
*/
|
||||
void
|
||||
BRegion::Support::AppendRegion(BRegion *first, BRegion *second, BRegion *dest)
|
||||
BRegion::Support::AppendRegion(const BRegion &first, const BRegion &second,
|
||||
BRegion &dest)
|
||||
{
|
||||
CALLED();
|
||||
ASSERT(first);
|
||||
ASSERT(second);
|
||||
ASSERT(dest);
|
||||
|
||||
CopyRegion(first, dest);
|
||||
|
||||
for (long c = 0; c < second->count; c++)
|
||||
dest->_AddRect(second->data[c]);
|
||||
for (long c = 0; c < second.count; c++)
|
||||
dest._AddRect(second.data[c]);
|
||||
}
|
||||
|
||||
|
||||
void
|
||||
BRegion::Support::ROr(long top, long bottom, BRegion *first, BRegion *second, BRegion *dest, long *indexA, long *indexB)
|
||||
BRegion::Support::ROr(long top, long bottom, const BRegion &first,
|
||||
const BRegion &second, BRegion &dest, long *indexA, long *indexB)
|
||||
{
|
||||
CALLED();
|
||||
|
||||
@ -540,7 +519,7 @@ BRegion::Support::ROr(long top, long bottom, BRegion *first, BRegion *second, BR
|
||||
|
||||
// allocate arrays on the heap, if the ones one the stack are too small
|
||||
int32 *allocatedBuffer = NULL;
|
||||
int32 maxCount = first->count - i1 + second->count - i2;
|
||||
int32 maxCount = first.count - i1 + second.count - i2;
|
||||
|
||||
if (maxCount > kMaxPoints) {
|
||||
RTRACE(("Stack space isn't sufficient. Allocating %ld bytes on the heap...\n",
|
||||
@ -552,33 +531,33 @@ BRegion::Support::ROr(long top, long bottom, BRegion *first, BRegion *second, BR
|
||||
}
|
||||
|
||||
// Store left and right points to the appropriate array
|
||||
for (x = i1; x < first->count; x++) {
|
||||
for (x = i1; x < first.count; x++) {
|
||||
|
||||
// Look if this rect can be used next time we are called,
|
||||
// thus correctly maintaining the "index" parameters.
|
||||
if (first->data[x].bottom >= top && *indexA == -1)
|
||||
if (first.data[x].bottom >= top && *indexA == -1)
|
||||
*indexA = x;
|
||||
|
||||
if (first->data[x].top <= top && first->data[x].bottom >= bottom) {
|
||||
lefts[foundCount] = first->data[x].left;
|
||||
rights[foundCount] = first->data[x].right;
|
||||
if (first.data[x].top <= top && first.data[x].bottom >= bottom) {
|
||||
lefts[foundCount] = first.data[x].left;
|
||||
rights[foundCount] = first.data[x].right;
|
||||
foundCount++;
|
||||
} else if (first->data[x].top > bottom)
|
||||
} else if (first.data[x].top > bottom)
|
||||
break;
|
||||
}
|
||||
|
||||
if (*indexA == -1)
|
||||
*indexA = i1;
|
||||
|
||||
for (x = i2; x < second->count; x++) {
|
||||
if (second->data[x].bottom >= top && *indexB == -1)
|
||||
for (x = i2; x < second.count; x++) {
|
||||
if (second.data[x].bottom >= top && *indexB == -1)
|
||||
*indexB = x;
|
||||
|
||||
if (second->data[x].top <= top && second->data[x].bottom >= bottom) {
|
||||
lefts[foundCount] = second->data[x].left;
|
||||
rights[foundCount] = second->data[x].right;
|
||||
if (second.data[x].top <= top && second.data[x].bottom >= bottom) {
|
||||
lefts[foundCount] = second.data[x].left;
|
||||
rights[foundCount] = second.data[x].right;
|
||||
foundCount++;
|
||||
} else if (second->data[x].top > bottom)
|
||||
} else if (second.data[x].top > bottom)
|
||||
break;
|
||||
}
|
||||
|
||||
@ -609,7 +588,7 @@ BRegion::Support::ROr(long top, long bottom, BRegion *first, BRegion *second, BR
|
||||
next++;
|
||||
}
|
||||
|
||||
dest->_AddRect(rect);
|
||||
dest._AddRect(rect);
|
||||
current = next;
|
||||
}
|
||||
|
||||
@ -627,32 +606,33 @@ BRegion::Support::ROr(long top, long bottom, BRegion *first, BRegion *second, BR
|
||||
\param dest The destination region.
|
||||
*/
|
||||
void
|
||||
BRegion::Support::OrRegionComplex(BRegion *first, BRegion *second, BRegion *dest)
|
||||
BRegion::Support::OrRegionComplex(const BRegion &first, const BRegion &second,
|
||||
BRegion &dest)
|
||||
{
|
||||
CALLED();
|
||||
long a = 0, b = 0;
|
||||
|
||||
int32 top;
|
||||
int32 bottom = min_c(first->bound.top, second->bound.top) - 1;
|
||||
int32 bottom = min_c(first.bound.top, second.bound.top) - 1;
|
||||
do {
|
||||
long x;
|
||||
top = bottom + 1;
|
||||
bottom = kMaxVerticalExtent;
|
||||
|
||||
for (x = a; x < first->count; x++) {
|
||||
int32 n = first->data[x].top - 1;
|
||||
for (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;
|
||||
if (first.data[x].bottom >= top && first.data[x].bottom < bottom)
|
||||
bottom = first.data[x].bottom;
|
||||
}
|
||||
|
||||
for (x = b; x < second->count; x++) {
|
||||
int32 n = second->data[x].top - 1;
|
||||
for (x = b; x < second.count; x++) {
|
||||
int32 n = second.data[x].top - 1;
|
||||
if (n >= top && n < bottom)
|
||||
bottom = n;
|
||||
if (second->data[x].bottom >= top && second->data[x].bottom < bottom)
|
||||
bottom = second->data[x].bottom;
|
||||
if (second.data[x].bottom >= top && second.data[x].bottom < bottom)
|
||||
bottom = second.data[x].bottom;
|
||||
}
|
||||
|
||||
// We can stand a region which extends to kMaxVerticalExtent, not more
|
||||
@ -676,20 +656,17 @@ BRegion::Support::OrRegionComplex(BRegion *first, BRegion *second, BRegion *dest
|
||||
one rect.
|
||||
*/
|
||||
void
|
||||
BRegion::Support::OrRegion1ToN(BRegion *first, BRegion *second, BRegion *dest)
|
||||
BRegion::Support::OrRegion1ToN(const BRegion &first, const BRegion &second,
|
||||
BRegion &dest)
|
||||
{
|
||||
CALLED();
|
||||
ASSERT(first);
|
||||
ASSERT(second);
|
||||
ASSERT(dest);
|
||||
|
||||
// The easy case first: if the first region contains the second,
|
||||
// the union is exactly the first region, since its bound is the
|
||||
// only rectangle.
|
||||
if (first->bound.top <= second->bound.top
|
||||
&& first->bound.bottom >= second->bound.bottom
|
||||
&& first->bound.left <= second->bound.left
|
||||
&& first->bound.right >= second->bound.right)
|
||||
if (first.bound.top <= second.bound.top
|
||||
&& first.bound.bottom >= second.bound.bottom
|
||||
&& first.bound.left <= second.bound.left
|
||||
&& first.bound.right >= second.bound.right)
|
||||
CopyRegion(first, dest);
|
||||
else
|
||||
OrRegionComplex(first, second, dest);
|
||||
@ -704,47 +681,44 @@ BRegion::Support::OrRegion1ToN(BRegion *first, BRegion *second, BRegion *dest)
|
||||
This function is called by or_region when the two regions don't intersect.
|
||||
*/
|
||||
void
|
||||
BRegion::Support::OrRegionNoX(BRegion *first, BRegion *second, BRegion *dest)
|
||||
BRegion::Support::OrRegionNoX(const BRegion &first, const BRegion &second,
|
||||
BRegion &dest)
|
||||
{
|
||||
CALLED();
|
||||
ASSERT(first);
|
||||
ASSERT(second);
|
||||
ASSERT(dest);
|
||||
|
||||
ZeroRegion(dest);
|
||||
|
||||
long x;
|
||||
|
||||
if (first->count == 0) {
|
||||
for (x = 0; x < second->count; x++)
|
||||
dest->_AddRect(second->data[x]);
|
||||
if (first.count == 0) {
|
||||
for (x = 0; x < second.count; x++)
|
||||
dest._AddRect(second.data[x]);
|
||||
|
||||
} else if (second->count == 0) {
|
||||
for (x = 0; x < first->count; x++)
|
||||
dest->_AddRect(first->data[x]);
|
||||
} else if (second.count == 0) {
|
||||
for (x = 0; x < first.count; x++)
|
||||
dest._AddRect(first.data[x]);
|
||||
|
||||
} else {
|
||||
long f = 0, s = 0;
|
||||
|
||||
while (f < first->count && s < second->count) {
|
||||
while (f < first.count && s < second.count) {
|
||||
|
||||
if (first->data[f].top < second->data[s].top) {
|
||||
dest->_AddRect(first->data[f]);
|
||||
if (first.data[f].top < second.data[s].top) {
|
||||
dest._AddRect(first.data[f]);
|
||||
f++;
|
||||
|
||||
} else {
|
||||
dest->_AddRect(second->data[s]);
|
||||
dest._AddRect(second.data[s]);
|
||||
s++;
|
||||
}
|
||||
}
|
||||
|
||||
if (f == first->count)
|
||||
for (; s < second->count; s++)
|
||||
dest->_AddRect(second->data[s]);
|
||||
if (f == first.count)
|
||||
for (; s < second.count; s++)
|
||||
dest._AddRect(second.data[s]);
|
||||
|
||||
else if (s == second->count)
|
||||
for (; f < first->count; f++)
|
||||
dest->_AddRect(first->data[f]);
|
||||
else if (s == second.count)
|
||||
for (; f < first.count; f++)
|
||||
dest._AddRect(first.data[f]);
|
||||
}
|
||||
}
|
||||
|
||||
@ -756,33 +730,34 @@ BRegion::Support::OrRegionNoX(BRegion *first, BRegion *second, BRegion *dest)
|
||||
\param dest The destination region.
|
||||
*/
|
||||
void
|
||||
BRegion::Support::SubRegionComplex(BRegion *first, BRegion *second, BRegion *dest)
|
||||
BRegion::Support::SubRegionComplex(const BRegion &first, const BRegion &second,
|
||||
BRegion &dest)
|
||||
{
|
||||
CALLED();
|
||||
long a = 0, b = 0;
|
||||
|
||||
int32 top;
|
||||
int32 bottom = min_c(first->bound.top, second->bound.top) - 1;
|
||||
int32 bottom = min_c(first.bound.top, second.bound.top) - 1;
|
||||
|
||||
do {
|
||||
long x;
|
||||
top = bottom + 1;
|
||||
bottom = kMaxVerticalExtent;
|
||||
|
||||
for (x = a; x < first->count; x++) {
|
||||
int32 n = first->data[x].top - 1;
|
||||
for (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;
|
||||
if (first.data[x].bottom >= top && first.data[x].bottom < bottom)
|
||||
bottom = first.data[x].bottom;
|
||||
}
|
||||
|
||||
for (x = b; x < second->count; x++) {
|
||||
int32 n = second->data[x].top - 1;
|
||||
for (x = b; x < second.count; x++) {
|
||||
int32 n = second.data[x].top - 1;
|
||||
if (n >= top && n < bottom)
|
||||
bottom = n;
|
||||
if (second->data[x].bottom >= top && second->data[x].bottom < bottom)
|
||||
bottom = second->data[x].bottom;
|
||||
if (second.data[x].bottom >= top && second.data[x].bottom < bottom)
|
||||
bottom = second.data[x].bottom;
|
||||
}
|
||||
|
||||
if (bottom >= kMaxVerticalExtent)
|
||||
@ -801,6 +776,7 @@ BRegion::Support::SubRegionComplex(BRegion *first, BRegion *second, BRegion *des
|
||||
|
||||
Watch out!!! We write 1 element more than count, so be sure that the passed
|
||||
arrays have the needed space
|
||||
// TODO: Find a better name for this function
|
||||
*/
|
||||
static void
|
||||
InvertRectangles(long *lefts, long *rights, long count)
|
||||
@ -819,7 +795,8 @@ InvertRectangles(long *lefts, long *rights, long count)
|
||||
|
||||
|
||||
void
|
||||
BRegion::Support::RSub(long top, long bottom, BRegion *first, BRegion *second, BRegion *dest, long *indexA, long *indexB)
|
||||
BRegion::Support::RSub(long top, long bottom, const BRegion &first,
|
||||
const BRegion &second, BRegion &dest, long *indexA, long *indexB)
|
||||
{
|
||||
CALLED();
|
||||
|
||||
@ -849,8 +826,8 @@ BRegion::Support::RSub(long top, long bottom, BRegion *first, BRegion *second, B
|
||||
int32 *allocatedBuffer = NULL;
|
||||
|
||||
// The +1 is needed here, see InvertRectangles()
|
||||
int32 maxCountA = first->count - i1 + 1;
|
||||
int32 maxCountB = second->count - i2 + 1;
|
||||
int32 maxCountA = first.count - i1 + 1;
|
||||
int32 maxCountB = second.count - i2 + 1;
|
||||
|
||||
if (maxCountA + maxCountB > kMaxPoints) {
|
||||
RTRACE(("Stack space isn't sufficient. Allocating %ld bytes on the heap...\n",
|
||||
@ -864,29 +841,29 @@ BRegion::Support::RSub(long top, long bottom, BRegion *first, BRegion *second, B
|
||||
}
|
||||
|
||||
// Store left and right points to the appropriate array
|
||||
for (x = i1; x < first->count; x++) {
|
||||
for (x = i1; x < first.count; x++) {
|
||||
// Look if this rect can be used next time we are called,
|
||||
// thus correctly maintaining the "index" parameters.
|
||||
if (first->data[x].bottom >= top && *indexA == -1)
|
||||
if (first.data[x].bottom >= top && *indexA == -1)
|
||||
*indexA = x;
|
||||
|
||||
if (first->data[x].top <= top && first->data[x].bottom >= bottom) {
|
||||
leftsA[foundA] = first->data[x].left;
|
||||
rightsA[foundA] = first->data[x].right;
|
||||
if (first.data[x].top <= top && first.data[x].bottom >= bottom) {
|
||||
leftsA[foundA] = first.data[x].left;
|
||||
rightsA[foundA] = first.data[x].right;
|
||||
foundA++;
|
||||
} else if (first->data[x].top > bottom)
|
||||
} else if (first.data[x].top > bottom)
|
||||
break;
|
||||
}
|
||||
|
||||
for (x = i2; x < second->count; x++) {
|
||||
if (second->data[x].bottom >= top && *indexB == -1)
|
||||
for (x = i2; x < second.count; x++) {
|
||||
if (second.data[x].bottom >= top && *indexB == -1)
|
||||
*indexB = x;
|
||||
|
||||
if (second->data[x].top <= top && second->data[x].bottom >= bottom) {
|
||||
leftsB[foundB] = second->data[x].left;
|
||||
rightsB[foundB] = second->data[x].right;
|
||||
if (second.data[x].top <= top && second.data[x].bottom >= bottom) {
|
||||
leftsB[foundB] = second.data[x].left;
|
||||
rightsB[foundB] = second.data[x].right;
|
||||
foundB++;
|
||||
} else if (second->data[x].top > bottom)
|
||||
} else if (second.data[x].top > bottom)
|
||||
break;
|
||||
}
|
||||
|
||||
@ -905,16 +882,16 @@ BRegion::Support::RSub(long top, long bottom, BRegion *first, BRegion *second, B
|
||||
if (foundA == 0) {
|
||||
for (x = 0; x < foundB; x++) {
|
||||
clipping_rect rect = { leftsB[x], top, rightsB[x], bottom };
|
||||
dest->_AddRect(rect);
|
||||
dest._AddRect(rect);
|
||||
}
|
||||
} else if (foundB > 0) {
|
||||
|
||||
InvertRectangles(leftsA, rightsA, foundA);
|
||||
|
||||
clipping_rect A, B;
|
||||
A.top = B.top = top;
|
||||
A.bottom = B.bottom = bottom;
|
||||
|
||||
// Note: the <= is not an error.
|
||||
for (long f = 0; f <= foundA; f++) {
|
||||
for (long s = 0; s < foundB; s++) {
|
||||
A.left = leftsA[f];
|
||||
@ -923,7 +900,7 @@ BRegion::Support::RSub(long top, long bottom, BRegion *first, BRegion *second, B
|
||||
B.left = leftsB[s];
|
||||
B.right = rightsB[s];
|
||||
if (rects_intersect(A, B))
|
||||
dest->_AddRect(sect_rect(A, B));
|
||||
dest._AddRect(sect_rect(A, B));
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
Loading…
Reference in New Issue
Block a user