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//##########################################################################
//# #
//# CLOUDCOMPARE #
//# #
//# 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; version 2 or later of the License. #
//# #
//# 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. #
//# #
//# COPYRIGHT: EDF R&D / TELECOM ParisTech (ENST-TSI) #
//# #
//##########################################################################
#include "ccExtru.h"
//qCC_db
#include "ccPointCloud.h"
#include "ccNormalVectors.h"
//CCLib
#include <Delaunay2dMesh.h>
//system
#include <string.h>
ccExtru::ccExtru(const std::vector<CCVector2>& profile,
PointCoordinateType height,
const ccGLMatrix* transMat /*= 0*/,
QString name/*="Extrusion"*/)
: ccGenericPrimitive(name,transMat)
, m_height(height)
, m_profile(profile)
{
assert(m_profile.size() > 2);
updateRepresentation();
}
ccExtru::ccExtru(QString name/*="Plane"*/)
: ccGenericPrimitive(name)
, m_height(0)
{
}
ccGenericPrimitive* ccExtru::clone() const
{
return finishCloneJob(new ccExtru(m_profile,m_height,&m_transformation,getName()));
}
bool ccExtru::buildUp()
{
unsigned count = static_cast<unsigned>(m_profile.size());
if (count < 3)
return false;
CCLib::Delaunay2dMesh mesh;
//DGM: we check that last vertex is different from the first one!
//(yes it happens ;)
if (m_profile.back().x == m_profile.front().x && m_profile.back().y == m_profile.front().y)
--count;
char errorStr[1024];
if (!mesh.buildMesh(m_profile,count,errorStr))
{
ccLog::Warning(QString("[ccPlane::buildUp] Profile triangulation failed (CClib said: '%1'").arg(errorStr));
return false;
}
unsigned numberOfTriangles = mesh.size();
int* triIndexes = mesh.getTriangleVertIndexesArray();
if (numberOfTriangles == 0)
return false;
//vertices
unsigned vertCount = 2*count;
//faces
unsigned faceCount = 2*numberOfTriangles+2*count;
//faces normals
unsigned faceNormCount = 2+count;
if (!init(vertCount,false,faceCount,faceNormCount))
{
ccLog::Error("[ccPlane::buildUp] Not enough memory");
return false;
}
ccPointCloud* verts = vertices();
assert(verts);
assert(m_triNormals);
//bottom & top faces normals
m_triNormals->addElement(ccNormalVectors::GetNormIndex(CCVector3(0.0,0.0,-1.0).u));
m_triNormals->addElement(ccNormalVectors::GetNormIndex(CCVector3(0.0,0.0,1.0).u));
//add profile vertices & normals
for (unsigned i=0;i<count;++i)
{
const CCVector2& P = m_profile[i];
verts->addPoint(CCVector3(P.x,P.y,0));
verts->addPoint(CCVector3(P.x,P.y,m_height));
const CCVector2& PNext = m_profile[(i+1)%count];
CCVector2 N(-(PNext.y-P.y),PNext.x-P.x);
N.normalize();
m_triNormals->addElement(ccNormalVectors::GetNormIndex(CCVector3(N.x,N.y,0.0).u));
}
//add faces
{
//side faces
{
const int* _triIndexes = triIndexes;
for (unsigned i=0;i<numberOfTriangles;++i,_triIndexes+=3)
{
addTriangle(_triIndexes[0]*2,_triIndexes[2]*2,_triIndexes[1]*2);
addTriangleNormalIndexes(0,0,0);
addTriangle(_triIndexes[0]*2+1,_triIndexes[1]*2+1,_triIndexes[2]*2+1);
addTriangleNormalIndexes(1,1,1);
}
}
//thickness
{
for (unsigned i=0;i<count;++i)
{
unsigned iNext = ((i+1)%count);
addTriangle(i*2,i*2+1,iNext*2);
addTriangleNormalIndexes(2+i,2+i,2+i);
addTriangle(iNext*2,i*2+1,iNext*2+1);
addTriangleNormalIndexes(2+i,2+i,2+i);
}
}
}
return true;
}
bool ccExtru::toFile_MeOnly(QFile& out) const
{
if (!ccGenericPrimitive::toFile_MeOnly(out))
return false;
//parameters (dataVersion>=21)
QDataStream outStream(&out);
outStream << m_height;
//profile size
outStream << (qint32)m_profile.size();
//profile points (2D)
for (unsigned i=0; i<m_profile.size(); ++i)
{
outStream << m_profile[i].x;
outStream << m_profile[i].y;
}
return true;
}
bool ccExtru::fromFile_MeOnly(QFile& in, short dataVersion, int flags)
{
if (!ccGenericPrimitive::fromFile_MeOnly(in, dataVersion, flags))
return false;
//parameters (dataVersion>=21)
QDataStream inStream(&in);
ccSerializationHelper::CoordsFromDataStream(inStream,flags,&m_height);
//profile size
qint32 vertCount;
inStream >> vertCount;
if (vertCount)
{
m_profile.resize(vertCount);
//profile points (2D)
for (unsigned i=0; i<m_profile.size(); ++i)
{
ccSerializationHelper::CoordsFromDataStream(inStream,flags,m_profile[i].u,2);
}
}
else
{
return false;
}
return true;
}
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