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/***************************************************************************
* Copyright (c) 2023 David Friedli <david[at]friedli-be.ch> *
* *
* This file is part of FreeCAD. *
* *
* FreeCAD is free software: you can redistribute it and/or modify it *
* under the terms of the GNU Lesser General Public License as *
* published by the Free Software Foundation, either version 2.1 of the *
* License, or (at your option) any later version. *
* *
* FreeCAD is distributed in the hope that it will be useful, but *
* WITHOUT ANY WARRANTY; without even the implied warranty of *
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU *
* Lesser General Public License for more details. *
* *
* You should have received a copy of the GNU Lesser General Public *
* License along with FreeCAD. If not, see *
* <https://www.gnu.org/licenses/>. *
* *
**************************************************************************/
#include <App/Application.h>
#include <App/MeasureManager.h>
#include <App/Document.h>
#include "MeasureArea.h"
using namespace Measure;
PROPERTY_SOURCE(Measure::MeasureArea, Measure::MeasureBase)
MeasureArea::MeasureArea()
{
ADD_PROPERTY_TYPE(Elements, (nullptr), "Measurement", App::Prop_None, "Element to get the area from");
Elements.setScope(App::LinkScope::Global);
Elements.setAllowExternal(true);
ADD_PROPERTY_TYPE(
Area,
(0.0),
"Measurement",
App::PropertyType(App::Prop_ReadOnly | App::Prop_Output),
"Area of element"
);
}
MeasureArea::~MeasureArea() = default;
bool MeasureArea::isSupported(App::MeasureElementType type)
{
// clang-format off
return (type == App::MeasureElementType::PLANE) ||
(type == App::MeasureElementType::CYLINDER) ||
(type == App::MeasureElementType::SURFACE) ||
(type == App::MeasureElementType::VOLUME);
// clang-format on
}
bool MeasureArea::isValidSelection(const App::MeasureSelection& selection)
{
if (selection.empty()) {
return false;
}
for (auto element : selection) {
auto type = App::MeasureManager::getMeasureElementType(element);
if (type == App::MeasureElementType::INVALID) {
return false;
}
if (!isSupported(type)) {
return false;
}
}
return true;
}
void MeasureArea::parseSelection(const App::MeasureSelection& selection)
{
// Set properties from selection, method is only invoked when isValid Selection returns true
std::vector<App::DocumentObject*> objects;
std::vector<std::string> subElements;
for (auto element : selection) {
auto objT = element.object;
objects.push_back(objT.getObject());
subElements.push_back(objT.getSubName());
}
Elements.setValues(objects, subElements);
}
App::DocumentObjectExecReturn* MeasureArea::execute()
{
const std::vector<App::DocumentObject*>& objects = Elements.getValues();
const std::vector<std::string>& subElements = Elements.getSubValues();
double result(0.0);
// Loop through Elements and call the valid geometry handler
for (std::vector<App::DocumentObject*>::size_type i = 0; i < objects.size(); i++) {
App::SubObjectT subject {objects.at(i), subElements.at(i).c_str()};
auto info = getMeasureInfo(subject);
if (!info || !info->valid) {
return new App::DocumentObjectExecReturn("Cannot calculate area");
}
auto areaInfo = std::dynamic_pointer_cast<Part::MeasureAreaInfo>(info);
result += areaInfo->area;
}
Area.setValue(result);
return DocumentObject::StdReturn;
}
void MeasureArea::onChanged(const App::Property* prop)
{
if (isRestoring() || isRemoving()) {
return;
}
if (prop == &Elements) {
auto ret = recompute();
delete ret;
}
MeasureBase::onChanged(prop);
}
Base::Placement MeasureArea::getPlacement() const
{
const std::vector<App::DocumentObject*>& objects = Elements.getValues();
const std::vector<std::string>& subElements = Elements.getSubValues();
if (objects.empty() || subElements.empty()) {
return Base::Placement();
}
App::SubObjectT subject {objects.front(), subElements.front().c_str()};
auto info = getMeasureInfo(subject);
if (!info) {
return {};
}
auto areaInfo = std::dynamic_pointer_cast<Part::MeasureAreaInfo>(info);
return areaInfo->placement;
}
//! Return the object we are measuring
//! used by the viewprovider in determining visibility
std::vector<App::DocumentObject*> MeasureArea::getSubject() const
{
return Elements.getValues();
}
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