/** Constructor with N-1 vectors on the plane's surface.
*
* @param vectors :: vector of N-1 vectors with N dimensions.
* @param origin :: any point on the plane
* @param insidePoint :: coordinate of a point that is known to be inside the
*plane described
* @throws if the vectors are collinear
*/
MDPlane::MDPlane(const std::vector<Mantid::Kernel::VMD> &vectors,
const Mantid::Kernel::VMD &origin,
const Mantid::Kernel::VMD &insidePoint) {
// Get the normal vector by the determinant method
VMD normal = VMD::getNormalVector(vectors);
// The dimensionality of the plane
m_nd = normal.getNumDims();
// Whew. We have a normal, and a point on the plane. We can construct
construct(normal, origin);
// Did we get the wrong sign of the normal?
if (!this->isPointBounded(insidePoint)) {
// Flip the normal over
delete[] this->m_normal;
for (size_t d = 0; d < normal.getNumDims(); d++)
normal[d] = -1.0f * normal[d];
// And re-construct
construct(normal, origin);
}
}
/** Automatically choose which coordinate to use as the X axis,
* if we selected it to be automatic
*/
void MantidQwtIMDWorkspaceData::choosePlotAxis()
{
if (m_plotAxis == MantidQwtIMDWorkspaceData::PlotAuto)
{
if (m_transform)
{
// Find the start and end points in the original workspace
VMD originalStart = m_transform->applyVMD(m_start);
VMD originalEnd = m_transform->applyVMD(m_end);
VMD diff = originalEnd - originalStart;
// Now we find the dimension with the biggest change
double largest = -1e30;
// Default to 0
m_currentPlotAxis = 0;
IMDWorkspace_const_sptr originalWS = m_originalWorkspace.lock();
bool regularBinnedMDWorkspace = false;
if(auto mdew = boost::dynamic_pointer_cast<const Mantid::API::IMDEventWorkspace>(m_workspace))
{
Mantid::API::BoxController_const_sptr controller = mdew->getBoxController();
bool atLeastOneDimNotIntegrated = false;
for(size_t i = 0; i < mdew->getNumDims(); ++i)
{
if( mdew->getDimension(i)->getNBins() == controller->getSplitInto(i))
{
if(!mdew->getDimension(i)->getIsIntegrated())
{
atLeastOneDimNotIntegrated = true;
}
}
}
regularBinnedMDWorkspace = atLeastOneDimNotIntegrated;
}
if(NULL != boost::dynamic_pointer_cast<const Mantid::API::IMDHistoWorkspace>(originalWS) || regularBinnedMDWorkspace)
{
for (size_t d=0; d<diff.getNumDims(); d++)
{
if (fabs(diff[d]) > largest || ( originalWS && originalWS->getDimension(m_currentPlotAxis)->getIsIntegrated() ) )
{
//Skip over any integrated dimensions
if( originalWS && !originalWS->getDimension(d)->getIsIntegrated() )
{
largest = fabs(diff[d]);
m_currentPlotAxis = int(d);
}
}
}
}
else
{
for (size_t d=0; d<diff.getNumDims(); d++)
{
if (fabs(diff[d]) > largest)
{
largest = fabs(diff[d]);
m_currentPlotAxis = int(d);
}
}
}
}
else
// Drop to distance if the transform does not exist
m_currentPlotAxis = MantidQwtIMDWorkspaceData::PlotDistance;
}
else
{
// Pass-through the value.
m_currentPlotAxis = m_plotAxis;
}
}
