/**
* createOneDetectorInstrument, creates the most simple possible definition of an instrument in which we can extract a valid L1 and L2 distance for unit calculations.
*
* Beam direction is along X,
* Up direction is Y
*
* @param sourcePos : V3D position
* @param samplePos : V3D sample position
* @param detectorPos : V3D detector position
* @return Instrument generated.
*/
Geometry::Instrument_sptr createMinimalInstrument(const Mantid::Kernel::V3D& sourcePos, const Mantid::Kernel::V3D& samplePos, const Mantid::Kernel::V3D& detectorPos )
{
Instrument_sptr instrument = boost::make_shared<Instrument>();
instrument->setReferenceFrame(
boost::make_shared<ReferenceFrame>(Mantid::Geometry::Y /*up*/, Mantid::Geometry::X /*along*/, Left, "0,0,0"));
// A source
ObjComponent *source = new ObjComponent("source");
source->setPos(sourcePos);
source->setShape(createSphere(0.01 /*1cm*/, V3D(0,0,0), "1"));
instrument->add(source);
instrument->markAsSource(source);
// A sample
ObjComponent *sample = new ObjComponent("some-surface-holder");
sample->setPos(samplePos);
sample->setShape(createSphere(0.01 /*1cm*/, V3D(0,0,0), "1"));
instrument->add(sample);
instrument->markAsSamplePos(sample);
// A detector
Detector *det = new Detector("point-detector", 1 /*detector id*/, NULL);
det->setPos(detectorPos);
det->setShape(createSphere(0.01 /*1cm*/, V3D(0,0,0), "1"));
instrument->add(det);
instrument->markAsDetector(det);
return instrument;
}
Geometry::Instrument_sptr
createVirtualInstrument(Kernel::V3D sourcePos, Kernel::V3D samplePos,
const std::vector<Kernel::V3D> &vecdetpos,
const std::vector<detid_t> &vecdetid) {
Instrument_sptr instrument = boost::make_shared<Instrument>();
instrument->setReferenceFrame(
boost::make_shared<ReferenceFrame>(Mantid::Geometry::Y /*up*/, Mantid::Geometry::Z /*along*/, Right, "0,0,0"));
// A source
ObjComponent *source = new ObjComponent("source");
source->setPos(sourcePos);
source->setShape(createSphere(0.01 /*1cm*/, V3D(0,0,0), "1"));
instrument->add(source);
instrument->markAsSource(source);
// A sample
ObjComponent *sample = new ObjComponent("some-surface-holder");
sample->setPos(samplePos);
sample->setShape(createSphere(0.01 /*1cm*/, V3D(0,0,0), "1"));
instrument->add(sample);
instrument->markAsSamplePos(sample);
// A detector
size_t numdets = vecdetpos.size();
for (size_t i = 0; i < numdets; ++i)
{
Detector *det = new Detector("point-detector", vecdetid[i] /*detector id*/, NULL);
det->setPos(vecdetpos[i]);
// FIXME - should be cubi... pixel
det->setShape(createSphere(0.01 /*1cm*/, V3D(0,0,0), "1"));
instrument->add(det);
instrument->markAsDetector(det);
}
return instrument;
}
void addFullInstrumentToWorkspace(MatrixWorkspace &workspace,
bool includeMonitors, bool startYNegative,
const std::string &instrumentName) {
auto instrument = boost::make_shared<Instrument>(instrumentName);
instrument->setReferenceFrame(
boost::make_shared<ReferenceFrame>(Y, Z, Right, ""));
workspace.setInstrument(instrument);
const double pixelRadius(0.05);
Object_sptr pixelShape = ComponentCreationHelper::createCappedCylinder(
pixelRadius, 0.02, V3D(0.0, 0.0, 0.0), V3D(0., 1.0, 0.), "tube");
const double detZPos(5.0);
// Careful! Do not use size_t or auto, the unisgned will break the -=2 below.
int ndets = static_cast<int>(workspace.getNumberHistograms());
if (includeMonitors)
ndets -= 2;
for (int i = 0; i < ndets; ++i) {
std::ostringstream lexer;
lexer << "pixel-" << i << ")";
Detector *physicalPixel =
new Detector(lexer.str(), workspace.getAxis(1)->spectraNo(i),
pixelShape, instrument.get());
int ycount(i);
if (startYNegative)
ycount -= 1;
const double ypos = ycount * 2.0 * pixelRadius;
physicalPixel->setPos(0.0, ypos, detZPos);
instrument->add(physicalPixel);
instrument->markAsDetector(physicalPixel);
workspace.getSpectrum(i).setDetectorID(physicalPixel->getID());
}
// Monitors last
if (includeMonitors) // These occupy the last 2 spectra
{
Detector *monitor1 =
new Detector("mon1", workspace.getAxis(1)->spectraNo(ndets),
Object_sptr(), instrument.get());
monitor1->setPos(0.0, 0.0, -9.0);
instrument->add(monitor1);
instrument->markAsMonitor(monitor1);
workspace.getSpectrum(ndets).setDetectorID(ndets + 1);
Detector *monitor2 =
new Detector("mon2", workspace.getAxis(1)->spectraNo(ndets) + 1,
Object_sptr(), instrument.get());
monitor2->setPos(0.0, 0.0, -2.0);
instrument->add(monitor2);
instrument->markAsMonitor(monitor2);
workspace.getSpectrum(ndets + 1).setDetectorID(ndets + 2);
}
// Define a source and sample position
// Define a source component
ObjComponent *source = new ObjComponent(
"moderator",
ComponentCreationHelper::createSphere(0.1, V3D(0, 0, 0), "1"),
instrument.get());
source->setPos(V3D(0.0, 0.0, -20.0));
instrument->add(source);
instrument->markAsSource(source);
// Define a sample as a simple sphere
ObjComponent *sample = new ObjComponent(
"samplePos",
ComponentCreationHelper::createSphere(0.1, V3D(0, 0, 0), "1"),
instrument.get());
instrument->setPos(0.0, 0.0, 0.0);
instrument->add(sample);
instrument->markAsSamplePos(sample);
// chopper position
Component *chop_pos = new Component("chopper-position",
Kernel::V3D(0, 0, -10), instrument.get());
instrument->add(chop_pos);
}