#include <SurveyDet.h>

Public Member Functions
AlgebraicMatrix	derivatives (unsigned int index) const

const align::ErrorMatrix &	errors () const

align::GlobalPoints	globalPoints () const

const align::LocalPoints &	localPoints () const

const align::PositionType &	position () const

const align::RotationType &	rotation () const

	SurveyDet (const AlignableSurface &, const align::ErrorMatrix &)

Private Attributes
align::ErrorMatrix	theErrors

std::vector< align::LocalPoint >	thePoints

AlignableSurface	theSurface

Detailed Description

Class to hold survey info.

Date: 2007/04/07 03:29:38

Revision: 1.4

Author: Chung Khim Lae

Definition at line 15 of file SurveyDet.h.

Constructor & Destructor Documentation

◆ SurveyDet()

SurveyDet::SurveyDet	(	const AlignableSurface &	surface,
		const align::ErrorMatrix &	errors
	)

Set the surface and 9 survey points to find its position and rotation.

--------— ^ --------— | . | . | . | | | 4 | 3 | 2 | --------— | --------— | . | . | . | L | 5 | 0 | 1 | --------— | --------— | . | . | . | | | 6 | 7 | 8 | --------— v --------— <-— W -—>

The left sensor shows how the 9 points are chosen (W = width, L = length) The right sensor shows how the points are indexed. Also set the survey errors.

Definition at line 3 of file SurveyDet.cc.

References PixelRegions::L3, AlignableSurface::length(), thePoints, and AlignableSurface::width().

     : theSurface(surface), theErrors(errors) {
   const align::Scalar W3 = surface.width() / 3.;
   const align::Scalar L3 = surface.length() / 3.;
 
   thePoints.reserve(4);  // 4 survey points
 
   //   thePoints.push_back( align::LocalPoint( 0.,  0., 0.) );
   thePoints.push_back(align::LocalPoint(W3, 0., 0.));
   //   thePoints.push_back( align::LocalPoint( W3,  L3, 0.) );
   thePoints.push_back(align::LocalPoint(0., L3, 0.));
   //   thePoints.push_back( align::LocalPoint(-W3,  L3, 0.) );
   thePoints.push_back(align::LocalPoint(-W3, 0., 0.));
   //   thePoints.push_back( align::LocalPoint(-W3, -L3, 0.) );
   thePoints.push_back(align::LocalPoint(0., -L3, 0.));
   //   thePoints.push_back( align::LocalPoint( W3, -L3, 0.) );
 }

Member Function Documentation

◆ derivatives()

AlgebraicMatrix SurveyDet::derivatives ( unsigned int index ) const

Find the Jacobian for a local point to be used in HIP algo. Does not check the range of index of local point.

Definition at line 21 of file SurveyDet.cc.

References thePoints.

Referenced by SurveyAlignmentPoints::findAlignPars().

                                                                {
   AlgebraicMatrix jac(6, 3, 0);  // 6 by 3 Jacobian init to 0
 
   //   jac(1, 1) = S11; jac(1, 2) = S12; jac(1, 3) = S13;
   //   jac(2, 1) = S21; jac(2, 2) = S22; jac(2, 3) = S23;
   //   jac(3, 1) = S31; jac(3, 2) = S32; jac(3, 3) = S33;
 
   //   jac(4, 1) = u2 * S31;
   //   jac(4, 2) = u2 * S32;
   //   jac(4, 3) = u2 * S33;
 
   //   jac(5, 1) = -u1 * S31;
   //   jac(5, 2) = -u1 * S32;
   //   jac(5, 3) = -u1 * S33;
 
   //   jac(6, 1) = u1 * S21 - u2 * S11;
   //   jac(6, 2) = u1 * S22 - u2 * S12;
   //   jac(6, 3) = u1 * S23 - u2 * S13;
 
   jac(1, 1) = 1.;
   jac(2, 2) = 1.;
   jac(3, 3) = 1.;
 
   jac(5, 3) -= jac(6, 2) = thePoints[index].x();
   jac(6, 1) -= jac(4, 3) = thePoints[index].y();
 
   return jac;
 }