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// CmdInfo.cpp
// this file is part of Context Free
// ---------------------
// Copyright (C) 2011-2013 John Horigan - john@glyphic.com
//
// This program is free software; you can redistribute it and/or
// modify it under the terms of the GNU General Public License
// as published by the Free Software Foundation; either version 2
// of the License, or (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with this program; if not, write to the Free Software
// Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
//
// John Horigan can be contacted at john@glyphic.com or at
// John Horigan, 1209 Villa St., Mountain View, CA 94041-1123, USA
//
//
#include "CmdInfo.h"
#include "astreplacement.h"
#include "primShape.h"
#include <atomic>
namespace AST {
const CommandInfo CommandInfo::Default(0, nullptr);
UIDdatatype CommandInfo::PathUIDDefault = std::numeric_limits<UIDdatatype>::max();
CommandInfo::CommandInfo(unsigned i, ASTcompiledPath* path, double w, const ASTpathCommand* c)
: mIndex(0), mPathUID(PathUIDDefault)
{
init(i, path, w, c);
}
CommandInfo::CommandInfo(unsigned i, agg::path_storage* path)
: mFlags(CF_MITER_JOIN + CF_BUTT_CAP + CF_FILL), mMiterLimit(4.0),
mStrokeWidth(0.1), mIndex(i), mPath(path), mPathUID(0)
{
}
void
CommandInfo::tryInit(unsigned i, ASTcompiledPath* path, double w, const ASTpathCommand* c)
{
// Try to change the path UID from the default value to a value that is
// guaranteed to not be in use. If successful then perform initialization
if (mPathUID.compare_exchange_strong(PathUIDDefault, 0ULL))
init(i, path, w, c);
}
void
CommandInfo::init(unsigned i, ASTcompiledPath* path, double w, const ASTpathCommand* c)
{
if (mPathUID != path->mPathUID || mIndex != i) {
if (c) {
mFlags = c->mFlags;
mMiterLimit = c->mMiterLimit;
} else {
mFlags = CF_MITER_JOIN + CF_BUTT_CAP + CF_FILL;
mMiterLimit = 4.0;
}
mIndex = i;
mPath = &(path->mPath);
mPathUID = path->mPathUID.load(); // this step must be last
mStrokeWidth = w;
}
}
CommandInfo::CommandInfo(CommandInfo&& from) noexcept
: mFlags(from.mFlags), mMiterLimit(from.mMiterLimit),
mStrokeWidth(from.mStrokeWidth), mIndex(from.mIndex), mPath(from.mPath),
mPathUID(from.mPathUID.load())
{ }
CommandInfo::CommandInfo(const CommandInfo& from)
: mFlags(from.mFlags), mMiterLimit(from.mMiterLimit),
mStrokeWidth(from.mStrokeWidth), mIndex(from.mIndex), mPath(from.mPath),
mPathUID(from.mPathUID.load())
{ }
CommandInfo&
CommandInfo::operator=(CommandInfo&& from) noexcept
{
if (this == &from) return *this;
mFlags = from.mFlags;
mMiterLimit = from.mMiterLimit;
mStrokeWidth = from.mStrokeWidth;
mIndex = from.mIndex;
mPath = from.mPath;
mPathUID = from.mPathUID.load();
return *this;
}
CommandInfo&
CommandInfo::operator=(const CommandInfo& from)
{
if (this == &from) return *this;
mFlags = from.mFlags;
mMiterLimit = from.mMiterLimit;
mStrokeWidth = from.mStrokeWidth;
mIndex = from.mIndex;
mPath = from.mPath;
mPathUID = from.mPathUID.load();
return *this;
}
}
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