create/src/Mod/Measure/App/MeasureRadius.cpp

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 *   Copyright (c) 2023 WandererFan <wandererfan@gmail.com>                *
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#include "PreCompiled.h"


#include <TopExp_Explorer.hxx>
#include <TopoDS.hxx>
#include <TopoDS_Edge.hxx>
#include <TopoDS_Wire.hxx>
#include <BRepAdaptor_Curve.hxx>
#include <BRepLProp_CLProps.hxx>

#include <App/Application.h>
#include <App/Document.h>
#include <App/MeasureManager.h>

#include <Mod/Part/App/PartFeature.h>

#include "MeasureRadius.h"


using namespace Measure;

PROPERTY_SOURCE(Measure::MeasureRadius, Measure::MeasureBase)



MeasureRadius::MeasureRadius()
{
    ADD_PROPERTY_TYPE(Element,(nullptr), "Measurement", App::Prop_None, "Element to get the radius from");
    Element.setScope(App::LinkScope::Global);
    Element.setAllowExternal(true);

    ADD_PROPERTY_TYPE(Radius,(0.0)       ,"Measurement",App::PropertyType(App::Prop_ReadOnly|App::Prop_Output),
                                            "Radius of selection");

}

MeasureRadius::~MeasureRadius() = default;

//! validate all the object+subelement pairs in the selection. Must be circle or arc
//! and have a geometry handler available.  We only calculate radius if there is a
//! single valid item in the selection
bool MeasureRadius::isValidSelection(const App::MeasureSelection& selection){

    if (selection.empty() || selection.size() > 1) {
        // too few or too many selections
        return false;
    }

    auto element = selection.front();
    auto type = App::MeasureManager::getMeasureElementType(element);

    if (type == App::MeasureElementType::INVALID) {
        return false;
    }

    if (type != App::MeasureElementType::CIRCLE
        && type != App::MeasureElementType::ARC) {
        return false;
    }

    return true;
}

//! return true if the selection is particularly interesting to MeasureRadius.
//! In this case we claim circles and arcs.
bool MeasureRadius::isPrioritizedSelection(const App::MeasureSelection& selection) {
    if (selection.size() != 1) {
        return false;
    }

    auto element = selection.front();
    auto type = App::MeasureManager::getMeasureElementType(element);

    if (type == App::MeasureElementType::CIRCLE
        || type == App::MeasureElementType::ARC) {
        return true;
    }

    return false;
}


//! Set properties from first item in selection. assumes a valid selection.
void MeasureRadius::parseSelection(const App::MeasureSelection& selection) {
    auto element = selection.front();
    auto objT = element.object;

    std::vector<std::string> subElementList { objT.getSubName() };
    Element.setValue(objT.getObject(), subElementList);
}


App::DocumentObjectExecReturn *MeasureRadius::execute()
{
    recalculateRadius();
    return DocumentObject::StdReturn;
}


void MeasureRadius::recalculateRadius()
{
    Radius.setValue(getMeasureInfoFirst()->radius);
}

void MeasureRadius::onChanged(const App::Property* prop)
{
    if (isRestoring() || isRemoving()) {
        return;
    }

    if (prop == &Element) {
        recalculateRadius();
    }

    MeasureBase::onChanged(prop);
}


//! return a placement (location + orientation) for the first element
Base::Placement MeasureRadius::getPlacement() {
    auto loc = getMeasureInfoFirst()->pointOnCurve;
    auto p = Base::Placement();
    p.setPosition(loc);
    return p;
}


//! return the pointOnCurve element in MeasureRadiusInfo for the first element
Base::Vector3d MeasureRadius::getPointOnCurve() const
{
    return getMeasureInfoFirst()->pointOnCurve;
}

//! get the handler's result for the first element
Part::MeasureRadiusInfoPtr MeasureRadius::getMeasureInfoFirst() const
{
    const App::DocumentObject* object = Element.getValue();
    const std::vector<std::string>& subElements = Element.getSubValues();

    if (!object || subElements.empty()) {
// NOLINTNEXTLINE(modernize-return-braced-init-list)
        return std::make_shared<Part::MeasureRadiusInfo>();
    }

    App::SubObjectT subject{object, subElements.front().c_str()};
    auto info = getMeasureInfo(subject);
    if (!info || !info->valid) {
// NOLINTNEXTLINE(modernize-return-braced-init-list)
        return std::make_shared<Part::MeasureRadiusInfo>();
    }

    auto radiusInfo = std::dynamic_pointer_cast<Part::MeasureRadiusInfo>(info);
    return radiusInfo;
}

//! Return the object we are measuring
//! used by the viewprovider in determining visibility
std::vector<App::DocumentObject*> MeasureRadius::getSubject() const
{
    return {Element.getValue()};
}