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/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/*************************************************************************
*
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* Copyright 2000, 2010 Oracle and/or its affiliates.
*
* OpenOffice.org - a multi-platform office productivity suite
*
* This file is part of OpenOffice.org.
*
* OpenOffice.org is free software: you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License version 3
* only, as published by the Free Software Foundation.
*
* OpenOffice.org 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 Lesser General Public License version 3 for more details
* (a copy is included in the LICENSE file that accompanied this code).
*
* You should have received a copy of the GNU Lesser General Public License
* version 3 along with OpenOffice.org. If not, see
* <http://www.openoffice.org/license.html>
* for a copy of the LGPLv3 License.
*
************************************************************************/
#include <drawinglayer/primitive3d/polygontubeprimitive3d.hxx>
#include <drawinglayer/attribute/materialattribute3d.hxx>
#include <basegfx/matrix/b3dhommatrix.hxx>
#include <basegfx/polygon/b3dpolypolygon.hxx>
#include <drawinglayer/primitive3d/polypolygonprimitive3d.hxx>
#include <basegfx/polygon/b3dpolypolygontools.hxx>
#include <drawinglayer/primitive3d/transformprimitive3d.hxx>
#include <drawinglayer/primitive3d/drawinglayer_primitivetypes3d.hxx>
//////////////////////////////////////////////////////////////////////////////
namespace drawinglayer
{
namespace primitive3d
{
namespace // anonymous namespace
{
Primitive3DSequence getLineTubeSegments(
sal_uInt32 nSegments,
const attribute::MaterialAttribute3D& rMaterial)
{
// static data for buffered tube primitives
static Primitive3DSequence aLineTubeList;
static sal_uInt32 nLineTubeSegments(0L);
static attribute::MaterialAttribute3D aLineMaterial;
// may exclusively change static data, use mutex
::osl::Mutex m_mutex;
if(nSegments != nLineTubeSegments || !(rMaterial == aLineMaterial))
{
nLineTubeSegments = nSegments;
aLineMaterial = rMaterial;
aLineTubeList = Primitive3DSequence();
}
if(!aLineTubeList.hasElements() && 0L != nLineTubeSegments)
{
const basegfx::B3DPoint aLeft(0.0, 0.0, 0.0);
const basegfx::B3DPoint aRight(1.0, 0.0, 0.0);
basegfx::B3DPoint aLastLeft(0.0, 1.0, 0.0);
basegfx::B3DPoint aLastRight(1.0, 1.0, 0.0);
basegfx::B3DHomMatrix aRot;
aRot.rotate(F_2PI / (double)nLineTubeSegments, 0.0, 0.0);
aLineTubeList.realloc(nLineTubeSegments);
for(sal_uInt32 a(0L); a < nLineTubeSegments; a++)
{
const basegfx::B3DPoint aNextLeft(aRot * aLastLeft);
const basegfx::B3DPoint aNextRight(aRot * aLastRight);
basegfx::B3DPolygon aNewPolygon;
aNewPolygon.append(aNextLeft);
aNewPolygon.setNormal(0L, basegfx::B3DVector(aNextLeft - aLeft));
aNewPolygon.append(aLastLeft);
aNewPolygon.setNormal(1L, basegfx::B3DVector(aLastLeft - aLeft));
aNewPolygon.append(aLastRight);
aNewPolygon.setNormal(2L, basegfx::B3DVector(aLastRight - aRight));
aNewPolygon.append(aNextRight);
aNewPolygon.setNormal(3L, basegfx::B3DVector(aNextRight - aRight));
aNewPolygon.setClosed(true);
const basegfx::B3DPolyPolygon aNewPolyPolygon(aNewPolygon);
const Primitive3DReference xRef(new PolyPolygonMaterialPrimitive3D(aNewPolyPolygon, aLineMaterial, false));
aLineTubeList[a] = xRef;
aLastLeft = aNextLeft;
aLastRight = aNextRight;
}
}
return aLineTubeList;
}
Primitive3DSequence getLineCapSegments(
sal_uInt32 nSegments,
const attribute::MaterialAttribute3D& rMaterial)
{
// static data for buffered tube primitives
static Primitive3DSequence aLineCapList;
static sal_uInt32 nLineCapSegments(0L);
static attribute::MaterialAttribute3D aLineMaterial;
// may exclusively change static data, use mutex
::osl::Mutex m_mutex;
if(nSegments != nLineCapSegments || !(rMaterial == aLineMaterial))
{
nLineCapSegments = nSegments;
aLineMaterial = rMaterial;
aLineCapList = Primitive3DSequence();
}
if(!aLineCapList.hasElements() && 0L != nLineCapSegments)
{
const basegfx::B3DPoint aNull(0.0, 0.0, 0.0);
basegfx::B3DPoint aLast(0.0, 1.0, 0.0);
basegfx::B3DHomMatrix aRot;
aRot.rotate(F_2PI / (double)nLineCapSegments, 0.0, 0.0);
aLineCapList.realloc(nLineCapSegments);
for(sal_uInt32 a(0L); a < nLineCapSegments; a++)
{
const basegfx::B3DPoint aNext(aRot * aLast);
basegfx::B3DPolygon aNewPolygon;
aNewPolygon.append(aLast);
aNewPolygon.setNormal(0L, basegfx::B3DVector(aLast - aNull));
aNewPolygon.append(aNext);
aNewPolygon.setNormal(1L, basegfx::B3DVector(aNext - aNull));
aNewPolygon.append(aNull);
aNewPolygon.setNormal(2L, basegfx::B3DVector(-1.0, 0.0, 0.0));
aNewPolygon.setClosed(true);
const basegfx::B3DPolyPolygon aNewPolyPolygon(aNewPolygon);
const Primitive3DReference xRef(new PolyPolygonMaterialPrimitive3D(aNewPolyPolygon, aLineMaterial, false));
aLineCapList[a] = xRef;
aLast = aNext;
}
}
return aLineCapList;
}
Primitive3DSequence getLineJoinSegments(
sal_uInt32 nSegments,
const attribute::MaterialAttribute3D& rMaterial,
double fAngle,
double /*fDegreeStepWidth*/,
double fMiterMinimumAngle,
basegfx::B2DLineJoin aLineJoin)
{
// nSegments is for whole circle, adapt to half circle
const sal_uInt32 nVerSeg(nSegments >> 1L);
std::vector< BasePrimitive3D* > aResultVector;
if(nVerSeg)
{
if(basegfx::B2DLINEJOIN_ROUND == aLineJoin)
{
// calculate new horizontal segments
const sal_uInt32 nHorSeg((sal_uInt32)((fAngle / F_2PI) * (double)nSegments));
if(nHorSeg)
{
// create half-sphere
const basegfx::B3DPolyPolygon aSphere(basegfx::tools::createUnitSphereFillPolyPolygon(nHorSeg, nVerSeg, true, F_PI2, -F_PI2, 0.0, fAngle));
for(sal_uInt32 a(0L); a < aSphere.count(); a++)
{
const basegfx::B3DPolygon aPartPolygon(aSphere.getB3DPolygon(a));
const basegfx::B3DPolyPolygon aPartPolyPolygon(aPartPolygon);
BasePrimitive3D* pNew = new PolyPolygonMaterialPrimitive3D(aPartPolyPolygon, rMaterial, false);
aResultVector.push_back(pNew);
}
}
else
{
// fallback to bevel when there is not at least one segment hor and ver
aLineJoin = basegfx::B2DLINEJOIN_BEVEL;
}
}
if(basegfx::B2DLINEJOIN_MIDDLE == aLineJoin
|| basegfx::B2DLINEJOIN_BEVEL == aLineJoin
|| basegfx::B2DLINEJOIN_MITER == aLineJoin)
{
if(basegfx::B2DLINEJOIN_MITER == aLineJoin)
{
const double fMiterAngle(fAngle/2.0);
if(fMiterAngle < fMiterMinimumAngle)
{
// fallback to bevel when miter's angle is too small
aLineJoin = basegfx::B2DLINEJOIN_BEVEL;
}
}
const double fInc(F_PI / (double)nVerSeg);
const double fSin(sin(-fAngle));
const double fCos(cos(-fAngle));
const bool bMiter(basegfx::B2DLINEJOIN_MITER == aLineJoin);
const double fMiterSin(bMiter ? sin(-(fAngle/2.0)) : 0.0);
const double fMiterCos(bMiter ? cos(-(fAngle/2.0)) : 0.0);
double fPos(-F_PI2);
basegfx::B3DPoint aPointOnXY, aPointRotY, aNextPointOnXY, aNextPointRotY;
basegfx::B3DPoint aCurrMiter, aNextMiter;
basegfx::B3DPolygon aNewPolygon, aMiterPolygon;
// close polygon
aNewPolygon.setClosed(true);
aMiterPolygon.setClosed(true);
for(sal_uInt32 a(0L); a < nVerSeg; a++)
{
const bool bFirst(0L == a);
const bool bLast(a + 1L == nVerSeg);
if(bFirst || !bLast)
{
fPos += fInc;
aNextPointOnXY = basegfx::B3DPoint(
cos(fPos),
sin(fPos),
0.0);
aNextPointRotY = basegfx::B3DPoint(
aNextPointOnXY.getX() * fCos,
aNextPointOnXY.getY(),
aNextPointOnXY.getX() * fSin);
if(bMiter)
{
aNextMiter = basegfx::B3DPoint(
aNextPointOnXY.getX(),
aNextPointOnXY.getY(),
fMiterSin * (aNextPointOnXY.getX() / fMiterCos));
}
}
if(bFirst)
{
aNewPolygon.clear();
if(bMiter)
{
aNewPolygon.append(basegfx::B3DPoint(0.0, -1.0, 0.0));
aNewPolygon.append(aNextPointOnXY);
aNewPolygon.append(aNextMiter);
aMiterPolygon.clear();
aMiterPolygon.append(basegfx::B3DPoint(0.0, -1.0, 0.0));
aMiterPolygon.append(aNextMiter);
aMiterPolygon.append(aNextPointRotY);
}
else
{
aNewPolygon.append(basegfx::B3DPoint(0.0, -1.0, 0.0));
aNewPolygon.append(aNextPointOnXY);
aNewPolygon.append(aNextPointRotY);
}
}
else if(bLast)
{
aNewPolygon.clear();
if(bMiter)
{
aNewPolygon.append(basegfx::B3DPoint(0.0, 1.0, 0.0));
aNewPolygon.append(aCurrMiter);
aNewPolygon.append(aPointOnXY);
aMiterPolygon.clear();
aMiterPolygon.append(basegfx::B3DPoint(0.0, 1.0, 0.0));
aMiterPolygon.append(aPointRotY);
aMiterPolygon.append(aCurrMiter);
}
else
{
aNewPolygon.append(basegfx::B3DPoint(0.0, 1.0, 0.0));
aNewPolygon.append(aPointRotY);
aNewPolygon.append(aPointOnXY);
}
}
else
{
aNewPolygon.clear();
if(bMiter)
{
aNewPolygon.append(aPointOnXY);
aNewPolygon.append(aNextPointOnXY);
aNewPolygon.append(aNextMiter);
aNewPolygon.append(aCurrMiter);
aMiterPolygon.clear();
aMiterPolygon.append(aCurrMiter);
aMiterPolygon.append(aNextMiter);
aMiterPolygon.append(aNextPointRotY);
aMiterPolygon.append(aPointRotY);
}
else
{
aNewPolygon.append(aPointRotY);
aNewPolygon.append(aPointOnXY);
aNewPolygon.append(aNextPointOnXY);
aNewPolygon.append(aNextPointRotY);
}
}
// set normals
for(sal_uInt32 b(0L); b < aNewPolygon.count(); b++)
{
aNewPolygon.setNormal(b, basegfx::B3DVector(aNewPolygon.getB3DPoint(b)));
}
// create primitive
if(aNewPolygon.count())
{
const basegfx::B3DPolyPolygon aNewPolyPolygon(aNewPolygon);
BasePrimitive3D* pNew = new PolyPolygonMaterialPrimitive3D(aNewPolyPolygon, rMaterial, false);
aResultVector.push_back(pNew);
}
if(bMiter && aMiterPolygon.count())
{
// set normals
for(sal_uInt32 c(0L); c < aMiterPolygon.count(); c++)
{
aMiterPolygon.setNormal(c, basegfx::B3DVector(aMiterPolygon.getB3DPoint(c)));
}
// create primitive
const basegfx::B3DPolyPolygon aMiterPolyPolygon(aMiterPolygon);
BasePrimitive3D* pNew = new PolyPolygonMaterialPrimitive3D(aMiterPolyPolygon, rMaterial, false);
aResultVector.push_back(pNew);
}
// prepare next step
if(bFirst || !bLast)
{
aPointOnXY = aNextPointOnXY;
aPointRotY = aNextPointRotY;
if(bMiter)
{
aCurrMiter = aNextMiter;
}
}
}
}
}
Primitive3DSequence aRetval(aResultVector.size());
for(sal_uInt32 a(0L); a < aResultVector.size(); a++)
{
aRetval[a] = Primitive3DReference(aResultVector[a]);
}
return aRetval;
}
basegfx::B3DHomMatrix getRotationFromVector(const basegfx::B3DVector& rVector)
{
// build transformation from unit vector to vector
basegfx::B3DHomMatrix aRetval;
// get applied rotations from angles in XY and in XZ (cartesian)
const double fRotInXY(atan2(rVector.getY(), rVector.getXZLength()));
const double fRotInXZ(atan2(-rVector.getZ(), rVector.getX()));
// apply rotations. Rot around Z needs to be done first, so apply in two steps
aRetval.rotate(0.0, 0.0, fRotInXY);
aRetval.rotate(0.0, fRotInXZ, 0.0);
return aRetval;
}
} // end of anonymous namespace
} // end of namespace primitive3d
} // end of namespace drawinglayer
//////////////////////////////////////////////////////////////////////////////
using namespace com::sun::star;
//////////////////////////////////////////////////////////////////////////////
namespace drawinglayer
{
namespace primitive3d
{
Primitive3DSequence PolygonTubePrimitive3D::impCreate3DDecomposition(const geometry::ViewInformation3D& /*rViewInformation*/) const
{
const sal_uInt32 nPointCount(getB3DPolygon().count());
std::vector< BasePrimitive3D* > aResultVector;
if(0L != nPointCount)
{
if(basegfx::fTools::more(getRadius(), 0.0))
{
const attribute::MaterialAttribute3D aMaterial(getBColor());
static sal_uInt32 nSegments(8L); // default for 3d line segments, for more quality just raise this value (in even steps)
const bool bClosed(getB3DPolygon().isClosed());
const bool bNoLineJoin(basegfx::B2DLINEJOIN_NONE == getLineJoin());
const sal_uInt32 nLoopCount(bClosed ? nPointCount : nPointCount - 1L);
basegfx::B3DPoint aLast(getB3DPolygon().getB3DPoint(nPointCount - 1L));
basegfx::B3DPoint aCurr(getB3DPolygon().getB3DPoint(0L));
for(sal_uInt32 a(0L); a < nLoopCount; a++)
{
// get next data
const basegfx::B3DPoint aNext(getB3DPolygon().getB3DPoint((a + 1L) % nPointCount));
const basegfx::B3DVector aForw(aNext - aCurr);
const double fForwLen(aForw.getLength());
if(basegfx::fTools::more(fForwLen, 0.0))
{
// get rotation from vector, this describes rotation from (1, 0, 0) to aForw
basegfx::B3DHomMatrix aRotVector(getRotationFromVector(aForw));
// create default transformation with scale and rotate
basegfx::B3DHomMatrix aVectorTrans;
aVectorTrans.scale(fForwLen, getRadius(), getRadius());
aVectorTrans *= aRotVector;
aVectorTrans.translate(aCurr.getX(), aCurr.getY(), aCurr.getZ());
if(bNoLineJoin || (!bClosed && !a))
{
// line start edge, build transformed primitiveVector3D
TransformPrimitive3D* pNewTransformedA = new TransformPrimitive3D(aVectorTrans, getLineCapSegments(nSegments, aMaterial));
aResultVector.push_back(pNewTransformedA);
}
else
{
const basegfx::B3DVector aBack(aCurr - aLast);
const double fCross(basegfx::cross(aBack, aForw).getLength());
if(!basegfx::fTools::equalZero(fCross))
{
// line connect non-parallel, aBack, aForw, use getLineJoin()
const double fAngle(acos(aBack.scalar(aForw) / (fForwLen * aBack.getLength()))); // 0.0 .. F_PI2
Primitive3DSequence aNewList(getLineJoinSegments(nSegments, aMaterial, fAngle, getDegreeStepWidth(), getMiterMinimumAngle(), getLineJoin()));
// calculate transformation. First, get angle in YZ between nForw projected on (1, 0, 0) and nBack
basegfx::B3DHomMatrix aInvRotVector(aRotVector);
aInvRotVector.invert();
basegfx::B3DVector aTransBack(aInvRotVector * aBack);
const double fRotInYZ(atan2(aTransBack.getY(), aTransBack.getZ()));
// create trans by rotating unit sphere with angle 90 degrees around Y, then 180-fRot in X.
// Also apply usual scaling and translation
basegfx::B3DHomMatrix aSphereTrans;
aSphereTrans.rotate(0.0, F_PI2, 0.0);
aSphereTrans.rotate(F_PI - fRotInYZ, 0.0, 0.0);
aSphereTrans *= aRotVector;
aSphereTrans.scale(getRadius(), getRadius(), getRadius());
aSphereTrans.translate(aCurr.getX(), aCurr.getY(), aCurr.getZ());
// line start edge, build transformed primitiveVector3D
TransformPrimitive3D* pNewTransformedB = new TransformPrimitive3D(aSphereTrans, aNewList);
aResultVector.push_back(pNewTransformedB);
}
}
// create line segments, build transformed primitiveVector3D
TransformPrimitive3D* pNewTransformedC = new TransformPrimitive3D(aVectorTrans, getLineTubeSegments(nSegments, aMaterial));
aResultVector.push_back(pNewTransformedC);
if(bNoLineJoin || (!bClosed && ((a + 1L) == nLoopCount)))
{
// line end edge, first rotate (mirror) and translate, then use use aRotVector
basegfx::B3DHomMatrix aBackTrans;
aBackTrans.rotate(0.0, F_PI, 0.0);
aBackTrans.translate(1.0, 0.0, 0.0);
aBackTrans.scale(fForwLen, getRadius(), getRadius());
aBackTrans *= aRotVector;
aBackTrans.translate(aCurr.getX(), aCurr.getY(), aCurr.getZ());
// line end edge, build transformed primitiveVector3D
TransformPrimitive3D* pNewTransformedD = new TransformPrimitive3D(aBackTrans, getLineCapSegments(nSegments, aMaterial));
aResultVector.push_back(pNewTransformedD);
}
}
// prepare next loop step
aLast = aCurr;
aCurr = aNext;
}
}
else
{
// create hairline
PolygonHairlinePrimitive3D* pNew = new PolygonHairlinePrimitive3D(getB3DPolygon(), getBColor());
aResultVector.push_back(pNew);
}
}
// prepare return value
Primitive3DSequence aRetval(aResultVector.size());
for(sal_uInt32 a(0L); a < aResultVector.size(); a++)
{
aRetval[a] = Primitive3DReference(aResultVector[a]);
}
return aRetval;
}
PolygonTubePrimitive3D::PolygonTubePrimitive3D(
const basegfx::B3DPolygon& rPolygon,
const basegfx::BColor& rBColor,
double fRadius, basegfx::B2DLineJoin aLineJoin,
double fDegreeStepWidth,
double fMiterMinimumAngle)
: PolygonHairlinePrimitive3D(rPolygon, rBColor),
maLast3DDecomposition(),
mfRadius(fRadius),
mfDegreeStepWidth(fDegreeStepWidth),
mfMiterMinimumAngle(fMiterMinimumAngle),
maLineJoin(aLineJoin)
{
}
bool PolygonTubePrimitive3D::operator==(const BasePrimitive3D& rPrimitive) const
{
if(PolygonHairlinePrimitive3D::operator==(rPrimitive))
{
const PolygonTubePrimitive3D& rCompare = (PolygonTubePrimitive3D&)rPrimitive;
return (getRadius() == rCompare.getRadius()
&& getDegreeStepWidth() == rCompare.getDegreeStepWidth()
&& getMiterMinimumAngle() == rCompare.getMiterMinimumAngle()
&& getLineJoin() == rCompare.getLineJoin());
}
return false;
}
Primitive3DSequence PolygonTubePrimitive3D::get3DDecomposition(const geometry::ViewInformation3D& rViewInformation) const
{
::osl::MutexGuard aGuard( m_aMutex );
if(!getLast3DDecomposition().hasElements())
{
const Primitive3DSequence aNewSequence(impCreate3DDecomposition(rViewInformation));
const_cast< PolygonTubePrimitive3D* >(this)->setLast3DDecomposition(aNewSequence);
}
return getLast3DDecomposition();
}
// provide unique ID
ImplPrimitrive3DIDBlock(PolygonTubePrimitive3D, PRIMITIVE3D_ID_POLYGONTUBEPRIMITIVE3D)
} // end of namespace primitive3d
} // end of namespace drawinglayer
//////////////////////////////////////////////////////////////////////////////
// eof
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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