void cc2DLabel::getLabelInfo3(LabelInfo3& info) const
{
info.cloud1 = info.cloud2 = info.cloud3 = 0;
if (m_points.size() != 3)
return;
//1st point
info.cloud1 = m_points[0].cloud;
info.point1Index = m_points[0].index;
const CCVector3* P1 = info.cloud1->getPointPersistentPtr(info.point1Index);
//2nd point
info.cloud2 = m_points[1].cloud;
info.point2Index = m_points[1].index;
const CCVector3* P2 = info.cloud2->getPointPersistentPtr(info.point2Index);
//3rd point
info.cloud3 = m_points[2].cloud;
info.point3Index = m_points[2].index;
const CCVector3* P3 = info.cloud3->getPointPersistentPtr(info.point3Index);
//area
CCVector3 P1P2 = *P2-*P1;
CCVector3 P1P3 = *P3-*P1;
CCVector3 P2P3 = *P3-*P2;
CCVector3 N = P1P2.cross(P1P3); //N = ABxAC
info.area = N.norm()/2;
//normal
N.normalize();
info.normal = N;
//edges length
info.edges.u[0] = P1P2.norm2d(); //edge 1-2
info.edges.u[1] = P2P3.norm2d(); //edge 2-3
info.edges.u[2] = P1P3.norm2d(); //edge 3-1
//angle
info.angles.u[0] = GetAngle_deg(P1P2,P1P3); //angleAtP1
info.angles.u[1] = GetAngle_deg(P2P3,-P1P2); //angleAtP2
info.angles.u[2] = GetAngle_deg(-P1P3,-P2P3); //angleAtP3 (should be equal to 180-a1-a2!)
}
QStringList cc2DLabel::getLabelContent(int precision)
{
QStringList body;
switch(m_points.size())
{
case 1: //point
{
//init title
/*title = m_title;
//automatically elide the title
title = titleFontMetrics.elidedText(title,Qt::ElideRight,dx);
//*/
//coordinates
ccGenericPointCloud* cloud = m_points[0].cloud;
const unsigned& pointIndex = m_points[0].index;
const CCVector3* P = cloud->getPointPersistentPtr(pointIndex);
QString coordStr = QString("P#%0: (%1;%2;%3)").arg(pointIndex).arg(P->x,0,'f',precision).arg(P->y,0,'f',precision).arg(P->z,0,'f',precision);
body << coordStr;
//normal
if (cloud->hasNormals())
{
const PointCoordinateType* N = cloud->getPointNormal(pointIndex);
assert(N);
QString normStr = QString("Normal: (%1;%2;%3)").arg(N[0],0,'f',precision).arg(N[1],0,'f',precision).arg(N[2],0,'f',precision);
body << normStr;
}
//color
if (cloud->hasColors())
{
const colorType* C = cloud->getPointColor(pointIndex);
assert(C);
QString colorStr = QString("Color: (%1;%2;%3)").arg(C[0]).arg(C[1]).arg(C[2]);
body << colorStr;
}
//scalar field
if (cloud->hasDisplayedScalarField())
{
ScalarType D = cloud->getPointScalarValue(pointIndex);
QString sfStr = QString("Scalar: %1").arg(D,0,'f',precision);
body << sfStr;
}
}
break;
case 2: //vector
{
//1st point
ccGenericPointCloud* cloud1 = m_points[0].cloud;
const unsigned& pointIndex1 = m_points[0].index;
const CCVector3* P1 = cloud1->getPointPersistentPtr(pointIndex1);
//2nd point
ccGenericPointCloud* cloud2 = m_points[1].cloud;
const unsigned& pointIndex2 = m_points[1].index;
const CCVector3* P2 = cloud2->getPointPersistentPtr(pointIndex2);
PointCoordinateType d = (*P1-*P2).norm();
QString distStr = QString("Distance = %1").arg(d,0,'f',precision);
body << distStr;
QString coordStr1 = QString("P#%0: (%1;%2;%3)").arg(pointIndex1).arg(P1->x,0,'f',precision).arg(P1->y,0,'f',precision).arg(P1->z,0,'f',precision);
body << coordStr1;
QString coordStr2 = QString("P#%0: (%1;%2;%3)").arg(pointIndex2).arg(P2->x,0,'f',precision).arg(P2->y,0,'f',precision).arg(P2->z,0,'f',precision);
body << coordStr2;
}
break;
case 3: //triangle/plane
{
//1st point
ccGenericPointCloud* cloud1 = m_points[0].cloud;
const unsigned& pointIndex1 = m_points[0].index;
const CCVector3* P1 = cloud1->getPointPersistentPtr(pointIndex1);
//2nd point
ccGenericPointCloud* cloud2 = m_points[1].cloud;
const unsigned& pointIndex2 = m_points[1].index;
const CCVector3* P2 = cloud2->getPointPersistentPtr(pointIndex2);
//3rd point
ccGenericPointCloud* cloud3 = m_points[2].cloud;
const unsigned& pointIndex3 = m_points[2].index;
const CCVector3* P3 = cloud3->getPointPersistentPtr(pointIndex3);
//area
CCVector3 P1P2 = *P2-*P1;
CCVector3 P1P3 = *P3-*P1;
CCVector3 N = P1P2.cross(P1P3); //N=ABxAC
PointCoordinateType area = N.norm()*(PointCoordinateType)0.5;
QString areaStr = QString("Area = %1").arg(area,0,'f',precision);
body << areaStr;
//coordinates
QString coordStr1 = QString("A#%0: (%1;%2;%3)").arg(pointIndex1).arg(P1->x,0,'f',precision).arg(P1->y,0,'f',precision).arg(P1->z,0,'f',precision);
body << coordStr1;
QString coordStr2 = QString("B#%0: (%1;%2;%3)").arg(pointIndex2).arg(P2->x,0,'f',precision).arg(P2->y,0,'f',precision).arg(P2->z,0,'f',precision);
body << coordStr2;
QString coordStr3 = QString("C#%0: (%1;%2;%3)").arg(pointIndex3).arg(P3->x,0,'f',precision).arg(P3->y,0,'f',precision).arg(P3->z,0,'f',precision);
body << coordStr3;
//normal
N.normalize();
QString normStr = QString("Normal: (%1;%2;%3)").arg(N.x,0,'f',precision).arg(N.y,0,'f',precision).arg(N.z,0,'f',precision);
body << normStr;
//angle
CCVector3 P2P3 = *P3-*P2;
//negatives
CCVector3 _P1P2 = -P1P2;
CCVector3 _P1P3 = -P1P3;
CCVector3 _P2P3 = -P2P3;
double angleAtP1 = GetAngle_deg(P1P2,P1P3);
double angleAtP2 = GetAngle_deg(P2P3,_P1P2);
double angleAtP3 = GetAngle_deg(_P1P3,_P2P3); //should be equal to 180-a1-a2!
QString angleStr = QString("Angles: A=%1 - B=%3 - C=%5 deg.").arg(angleAtP1,0,'f',precision).arg(angleAtP2,0,'f',precision).arg(angleAtP3,0,'f',precision);
body << angleStr;
}
break;
default:
assert(false);
break;
}
return body;
}
