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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 "ccTorus.h"
//Local
#include "ccPointCloud.h"
#include "ccNormalVectors.h"
ccTorus::ccTorus(PointCoordinateType insideRadius,
PointCoordinateType outsideRadius,
double angle_rad/*=2.0*M_PI*/,
bool rectangularSection/*=false*/,
PointCoordinateType rectSectionHeight/*=0*/,
const ccGLMatrix* transMat/*=0*/,
QString name/*=QString("Torus")*/,
unsigned precision/*=DEFAULT_DRAWING_PRECISION*/)
: ccGenericPrimitive(name,transMat)
, m_insideRadius(fabs(insideRadius))
, m_outsideRadius(fabs(outsideRadius))
, m_rectSection(rectangularSection)
, m_rectSectionHeight(fabs(rectSectionHeight))
, m_angle_rad(fabs(angle_rad))
{
setDrawingPrecision(std::max<unsigned>(precision,MIN_DRAWING_PRECISION)); //automatically calls updateRepresentation
}
ccTorus::ccTorus(QString name/*=QString("Torus")*/)
: ccGenericPrimitive(name)
, m_insideRadius(0)
, m_outsideRadius(0)
, m_rectSection(false)
, m_rectSectionHeight(0)
, m_angle_rad(0)
{
}
ccGenericPrimitive* ccTorus::clone() const
{
return finishCloneJob(new ccTorus(m_insideRadius,m_outsideRadius,m_angle_rad,m_rectSection,m_rectSectionHeight,&m_transformation,getName(),m_drawPrecision));
}
bool ccTorus::buildUp()
{
if (m_drawPrecision < MIN_DRAWING_PRECISION)
return false;
//invalid parameters?
if ((m_rectSection && m_rectSectionHeight < ZERO_TOLERANCE) || m_insideRadius >= m_outsideRadius || m_angle_rad < ZERO_TOLERANCE)
return false;
//topology
bool closed = (m_angle_rad >= 2.0*M_PI);
const unsigned steps = m_drawPrecision;
unsigned sweepSteps = 4 * (closed ? steps : static_cast<unsigned>(ceil((m_angle_rad * steps)/(2.0*M_PI))));
unsigned sectSteps = (m_rectSection ? 4 : steps);
//vertices
unsigned vertCount = (sweepSteps + (closed ? 0 : 1)) * sectSteps; //DGM: +1 row for non closed loops
//faces
unsigned facesCount = sweepSteps * sectSteps *2;
//faces normals
unsigned faceNormCount = (sweepSteps + (closed ? 0 : 1)) * sectSteps; //DGM: +1 row for non closed loops
if (!closed)
facesCount += (m_rectSection ? 2 : sectSteps)*2;
if (!init(vertCount + (closed || m_rectSection ? 0 : 2), false, facesCount, faceNormCount + (closed ? 0 : 2)))
{
ccLog::Error("[ccTorus::buildUp] Not enough memory");
return false;
}
//2D section
std::vector<CCVector3> sectPoints;
try
{
sectPoints.resize(sectSteps);
}
catch (const std::bad_alloc&)
{
init(0,false,0,0);
ccLog::Error("[ccTorus::buildUp] Not enough memory");
return false;
}
double sweepStep_rad = m_angle_rad / sweepSteps;
double sectStep_rad = (2.0*M_PI) / sectSteps;
PointCoordinateType sectionRadius = (m_outsideRadius-m_insideRadius)/2;
if (m_rectSection)
{
//rectangular section
sectPoints[0].x = (m_outsideRadius-m_insideRadius)/2;
sectPoints[0].z = m_rectSectionHeight/2;
sectPoints[1].x = -sectPoints[0].x;
sectPoints[1].z = sectPoints[0].z;
sectPoints[2].x = sectPoints[1].x;
sectPoints[2].z = -sectPoints[1].z;
sectPoints[3].x = -sectPoints[2].x;
sectPoints[3].z = sectPoints[2].z;
}
else
{
//circular section
for (unsigned i=0; i<sectSteps; ++i)
{
double sect_angle_rad = i * sectStep_rad;
sectPoints[i].x = static_cast<PointCoordinateType>(cos(sect_angle_rad) * sectionRadius);
sectPoints[i].z = static_cast<PointCoordinateType>(sin(sect_angle_rad) * sectionRadius);
}
}
ccPointCloud* verts = vertices();
assert(verts);
assert(m_triNormals);
//main sweep
PointCoordinateType sweepRadius = (m_insideRadius + m_outsideRadius)/2;
for (unsigned t=0; t<(closed ? sweepSteps : sweepSteps+1); ++t)
{
//unit director vector
CCVector3 sweepU(static_cast<PointCoordinateType>(cos(t*sweepStep_rad)),
static_cast<PointCoordinateType>(sin(t*sweepStep_rad)),
0);
//section points
for (unsigned i=0; i<sectSteps; ++i)
{
CCVector3 P(sweepU.x * (sweepRadius + sectPoints[i].x),
sweepU.y * (sweepRadius + sectPoints[i].x),
sectPoints[i].z);
verts->addPoint(P);
}
//normals
if (m_rectSection)
{
m_triNormals->addElement(ccNormalVectors::GetNormIndex(CCVector3(0.0,0.0,1.0).u));
m_triNormals->addElement(ccNormalVectors::GetNormIndex((-sweepU).u));
m_triNormals->addElement(ccNormalVectors::GetNormIndex(CCVector3(0.0,0.0,-1.0).u));
m_triNormals->addElement(ccNormalVectors::GetNormIndex(sweepU.u));
}
else //circular section
{
for (unsigned i=0; i<sectSteps; ++i)
{
double sectAngle_rad = i * sectStep_rad;
CCVector3 sectU = CCVector3::fromArray(CCVector3(cos(sectAngle_rad), 0.0, sin(sectAngle_rad)).u);
CCVector3 N(sweepU.x * sectU.x,
sweepU.y * sectU.x,
sectU.z);
m_triNormals->addElement(ccNormalVectors::GetNormIndex(N.u));
}
}
}
if (!closed && !m_rectSection)
{
CCVector3 P(sweepRadius,0,0);
verts->addPoint(P);
CCVector3 P2( static_cast<PointCoordinateType>(cos(m_angle_rad))*sweepRadius,
static_cast<PointCoordinateType>(sin(m_angle_rad))*sweepRadius,
0);
verts->addPoint(P2);
}
if (!closed)
{
//first section (left side)
m_triNormals->addElement(ccNormalVectors::GetNormIndex(CCVector3(0,-1,0).u));
//last section (right side)
m_triNormals->addElement(ccNormalVectors::GetNormIndex(CCVector3( static_cast<PointCoordinateType>(-sin(m_angle_rad)),
static_cast<PointCoordinateType>(cos(m_angle_rad)),
0).u));
}
sectPoints.clear();
//mesh faces
{
assert(m_triVertIndexes);
for (unsigned t=0;t<sweepSteps;++t)
{
unsigned sweepStart = t*sectSteps;
for (unsigned i=0;i<sectSteps;++i)
{
unsigned iNext = (i+1)%sectSteps;
addTriangle(sweepStart+i,(sweepStart+i+sectSteps)%vertCount,(sweepStart+iNext+sectSteps)%vertCount);
if (m_rectSection)
addTriangleNormalIndexes(sweepStart+i,(sweepStart+i+sectSteps)%faceNormCount,(sweepStart+i+sectSteps)%faceNormCount);
else
addTriangleNormalIndexes(sweepStart+i,(sweepStart+i+sectSteps)%faceNormCount,(sweepStart+iNext+sectSteps)%faceNormCount);
addTriangle(sweepStart+i,(sweepStart+iNext+sectSteps)%vertCount,sweepStart+iNext);
if (m_rectSection)
addTriangleNormalIndexes(sweepStart+i,(sweepStart+i+sectSteps)%faceNormCount,sweepStart+i);
else
addTriangleNormalIndexes(sweepStart+i,(sweepStart+iNext+sectSteps)%faceNormCount,sweepStart+iNext);
}
}
if (!closed)
{
unsigned lastSectionShift = sweepSteps*sectSteps;
if (m_rectSection)
{
//rectangular left section
addTriangle(0,1,2);
addTriangleNormalIndexes(faceNormCount,faceNormCount,faceNormCount);
addTriangle(0,2,3);
addTriangleNormalIndexes(faceNormCount,faceNormCount,faceNormCount);
//rectangular right section
addTriangle(lastSectionShift,lastSectionShift+2,lastSectionShift+1);
addTriangleNormalIndexes(faceNormCount+1,faceNormCount+1,faceNormCount+1);
addTriangle(lastSectionShift,lastSectionShift+3,lastSectionShift+2);
addTriangleNormalIndexes(faceNormCount+1,faceNormCount+1,faceNormCount+1);
}
else
{
unsigned lastSectionCenterShift = vertCount;
//circular 'left' section
for (unsigned i=0;i<sectSteps;++i)
{
unsigned iNext = (i+1)%sectSteps;
addTriangle(lastSectionCenterShift,i,iNext);
addTriangleNormalIndexes(faceNormCount,faceNormCount,faceNormCount);
}
//circular 'right' section
for (unsigned i=0;i<sectSteps;++i)
{
unsigned iNext = (i+1)%sectSteps;
addTriangle(lastSectionCenterShift+1,lastSectionShift+iNext,lastSectionShift+i);
addTriangleNormalIndexes(faceNormCount+1,faceNormCount+1,faceNormCount+1);
}
}
}
}
notifyGeometryUpdate();
showTriNorms(true);
return true;
}
bool ccTorus::toFile_MeOnly(QFile& out) const
{
if (!ccGenericPrimitive::toFile_MeOnly(out))
return false;
//parameters (dataVersion>=21)
QDataStream outStream(&out);
outStream << m_insideRadius;
outStream << m_outsideRadius;
outStream << m_rectSection;
outStream << m_rectSectionHeight;
outStream << m_angle_rad;
return true;
}
bool ccTorus::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_insideRadius,1);
ccSerializationHelper::CoordsFromDataStream(inStream,flags,&m_outsideRadius,1);
inStream >> m_rectSection;
ccSerializationHelper::CoordsFromDataStream(inStream,flags,&m_rectSectionHeight,1);
inStream >> m_angle_rad;
return true;
}
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