GUIViewObjectsHandler.cpp

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// Eclipse SUMO, Simulation of Urban MObility; see https://eclipse.dev/sumo
// Copyright (C) 2001-2024 German Aerospace Center (DLR) and others.
// This program and the accompanying materials are made available under the
// terms of the Eclipse Public License 2.0 which is available at
// https://www.eclipse.org/legal/epl-2.0/
// This Source Code may also be made available under the following Secondary
// Licenses when the conditions for such availability set forth in the Eclipse
// Public License 2.0 are satisfied: GNU General Public License, version 2
// or later which is available at
// https://www.gnu.org/licenses/old-licenses/gpl-2.0-standalone.html
// SPDX-License-Identifier: EPL-2.0 OR GPL-2.0-or-later
/****************************************************************************/
// class used for handle objects over view
/****************************************************************************/
#include <config.h>
#include <algorithm>
 
#include <utils/shapes/Shape.h>
 
#include "GUIViewObjectsHandler.h"
 
 
// ===========================================================================
// method definitions
// ===========================================================================
 
GUIViewObjectsHandler::GUIViewObjectsHandler() {}
 
 
void
GUIViewObjectsHandler::clearSelectedElements() {
    // reset recompute boundaries
    recomputeBoundaries = GLO_NETWORK;
    // clear objects under cursor
    mySortedSelectedObjects.clear();
    mySelectedObjects.clear();
    // reset marked elements
    markedEdge = nullptr;
    markedLane = nullptr;
    markedTAZ = nullptr;
    markedRoute = nullptr;
    markedFirstGeometryPoint = nullptr;
    markedSecondGeometryPoint = nullptr;
}
 
 
const Position&
GUIViewObjectsHandler::getSelectionPosition() const {
    return mySelectionPosition;
}
 
 
const Boundary&
GUIViewObjectsHandler::getSelectionBoundary() const {
    return mySelectionBoundary;
}
 
 
void
GUIViewObjectsHandler::setSelectionPosition(const Position& pos) {
    // set position selection
    mySelectionPosition = pos;
    // invalidate selection boundary
    mySelectionBoundary.reset();
    mySelectionBoundaryShape.clear();
}
 
 
void
GUIViewObjectsHandler::setSelectionBoundary(const Boundary& boundary) {
    // invalidate position selection
    mySelectionPosition = Position::INVALID;
    // set selection boundary
    mySelectionBoundary = boundary;
    mySelectionBoundaryShape = boundary.getShape(false);
}
 
 
bool
GUIViewObjectsHandler::isElementSelected(const GUIGlObject* GLObject) const {
    return mySelectedObjects.find(GLObject) != mySelectedObjects.end();
}
 
 
bool
GUIViewObjectsHandler::checkBoundaryParentElement(const GUIGlObject* GLObject, const GUIGlObject* parent) {
    // first check if we're selecting for boundary
    if (!mySelectionBoundary.isInitialised()) {
        return false;
    }
    // try to find parent in seleted object
    auto finder = mySelectedObjects.find(parent);
    // if parent was found and was inserted with full boundary, insert it
    if (finder != mySelectedObjects.end() && finder->second && !isElementSelected(GLObject)) {
        // insert element with full boundary
        return addElementUnderCursor(GLObject, false, true);
    } else {
        return false;
    }
}
 
 
bool
GUIViewObjectsHandler::checkCircleElement(const GUIVisualizationSettings::Detail d, const GUIGlObject* GLObject,
        const Position& center, const double radius, const Boundary& circleBoundary) {
    // first check that object doesn't exist
    if (isElementSelected(GLObject)) {
        return false;
    } else {
        // declare squared radius
        const double squaredRadius = (radius * radius);
        // continue depending if we're selecting a position or a boundary
        if (mySelectionBoundary.isInitialised()) {
            // continue depending of detail level
            if (d <= GUIVisualizationSettings::Detail::PreciseSelection) {
                // avoid empty boundaries
                if (!circleBoundary.isInitialised()) {
                    return false;
                }
                // check if selection boundary contains the centering boundary of object
                if (mySelectionBoundary.contains(GLObject->getCenteringBoundary())) {
                    return addElementUnderCursor(GLObject, false, true);
                }
                // check if boundary overlaps
                if (mySelectionBoundary.overlapsWith(circleBoundary)) {
                    return addElementUnderCursor(GLObject, false, false);
                }
                // check if the four boundary vertex are within circle
                for (const auto& vertex : mySelectionBoundaryShape) {
                    if (vertex.distanceSquaredTo2D(center) <= squaredRadius) {
                        return addElementUnderCursor(GLObject, false, false);
                    }
                }
                // no intersection, then return false
                return false;
            } else {
                // check if center is within mySelectionBoundary
                if (mySelectionBoundary.around2D(center)) {
                    return addElementUnderCursor(GLObject, false, false);
                } else {
                    return false;
                }
            }
        } else if (mySelectionPosition != Position::INVALID) {
            // check distance between selection position and center
            if (mySelectionPosition.distanceSquaredTo2D(center) <= squaredRadius) {
                return addElementUnderCursor(GLObject, false, false);
            } else {
                return false;
            }
        } else {
            return false;
        }
    }
}
 
 
bool
GUIViewObjectsHandler::checkGeometryPoint(const GUIVisualizationSettings::Detail d, const GUIGlObject* GLObject,
        const PositionVector& shape, const int index, const double radius) {
    // obtain geometry point pos
    const auto geometryPointPos = shape[index];
    // declare squared radius
    const double squaredRadius = (radius * radius);
    // continue depending if we're selecting a position or a boundary
    if (mySelectionBoundary.isInitialised()) {
        // continue depending of detail level
        if (d <= GUIVisualizationSettings::Detail::PreciseSelection) {
            // make a boundary using center and radius
            Boundary geometryPointBoundary;
            geometryPointBoundary.add(geometryPointPos);
            geometryPointBoundary.grow(radius);
            // check if boundary is whithin selection boundary
            if (mySelectionBoundary.contains(geometryPointBoundary)) {
                return addGeometryPointUnderCursor(GLObject, index);
            } else if (mySelectionBoundary.overlapsWith(geometryPointBoundary)) {
                return addGeometryPointUnderCursor(GLObject, index);
            } else {
                // check if the four boundary vertex are within circle
                for (const auto& vertex : mySelectionBoundaryShape) {
                    if (vertex.distanceSquaredTo2D(geometryPointPos) <= squaredRadius) {
                        return addGeometryPointUnderCursor(GLObject, index);
                    }
                }
                // no intersection, then return false
                return false;
            }
        } else {
            // check if center is within mySelectionBoundary
            if (mySelectionBoundary.around2D(geometryPointPos)) {
                return addGeometryPointUnderCursor(GLObject, index);
            } else {
                return false;
            }
        }
    } else if (mySelectionPosition != Position::INVALID) {
        // check distance between selection position and center
        if (mySelectionPosition.distanceSquaredTo2D(geometryPointPos) <= squaredRadius) {
            return addGeometryPointUnderCursor(GLObject, index);
        } else {
            return false;
        }
    } else {
        return false;
    }
}
 
 
bool
GUIViewObjectsHandler::checkPositionOverShape(const GUIVisualizationSettings::Detail d, const GUIGlObject* GLObject,
        const PositionVector& shape, const double distance) {
    // only process if we're selecting a precise position
    if ((mySelectionPosition != Position::INVALID) && (d <= GUIVisualizationSettings::Detail::PreciseSelection)) {
        // obtain nearest position over shape
        const auto nearestOffset = shape.nearest_offset_to_point2D(mySelectionPosition);
        const auto nearestPos = shape.positionAtOffset2D(nearestOffset);
        // check distance nearest position and pos
        if (mySelectionPosition.distanceSquaredTo2D(nearestPos) <= (distance * distance)) {
            return addPositionOverShape(GLObject, nearestPos, nearestOffset);
        } else {
            return false;
        }
    } else {
        return false;
    }
}
 
 
bool
GUIViewObjectsHandler::checkShapeElement(const GUIGlObject* GLObject, const PositionVector& shape,
        const Boundary& shapeBoundary) {
    // first check that object doesn't exist
    if (isElementSelected(GLObject)) {
        return false;
    } else if (mySelectionBoundary.isInitialised()) {
        // avoid invalid boundaries
        if (!shapeBoundary.isInitialised()) {
            return false;
        }
        // check if selection boundary contains the centering boundary of object
        if (mySelectionBoundary.contains(shapeBoundary)) {
            return addElementUnderCursor(GLObject, false, true);
        }
        // check if shape crosses to selection boundary
        for (int i = 1; i < (int)shape.size(); i++) {
            if (mySelectionBoundary.crosses(shape[i - 1], shape[i])) {
                return addElementUnderCursor(GLObject, false, false);
            }
        }
        // no intersection, then return false
        return false;
    } else if (mySelectionPosition != Position::INVALID) {
        // check if selection position is around shape
        if (shape.around(mySelectionPosition)) {
            return addElementUnderCursor(GLObject, false, false);
        } else {
            return false;
        }
    } else {
        return false;
    }
}
 
 
bool
GUIViewObjectsHandler::addElementUnderCursor(const GUIGlObject* GLObject, const bool checkDuplicated, const bool fullBoundary) {
    // first check that object doesn't exist
    if (checkDuplicated && isElementSelected(GLObject)) {
        return false;
    } else {
        // check if this is an element with an associated layer
        const auto layer = dynamic_cast<const Shape*>(GLObject);
        if (layer) {
            auto& layerContainer = mySortedSelectedObjects[layer->getShapeLayer() * -1];
            layerContainer.insert(layerContainer.begin(), ObjectContainer(GLObject));
        } else if (GLObject) {
            auto& layerContainer = mySortedSelectedObjects[GLObject->getType() * -1];
            layerContainer.insert(layerContainer.begin(), ObjectContainer(GLObject));
        }
        mySelectedObjects[GLObject] = fullBoundary;
        return true;
    }
}
 
 
bool
GUIViewObjectsHandler::addGeometryPointUnderCursor(const GUIGlObject* GLObject, const int newIndex) {
    // avoid to insert duplicated elements
    for (auto& elementLayer : mySortedSelectedObjects) {
        for (auto& element : elementLayer.second) {
            if (element.object == GLObject) {
                // avoid double points
                for (auto& index : element.geometryPoints) {
                    if (index == newIndex) {
                        return false;
                    }
                }
                // add new index
                element.geometryPoints.push_back(newIndex);
                return true;
            }
        }
    }
    // no element found then add it
    const auto layer = dynamic_cast<const Shape*>(GLObject);
    if (layer) {
        auto& layerContainer = mySortedSelectedObjects[layer->getShapeLayer() * -1];
        auto it = layerContainer.insert(layerContainer.begin(), ObjectContainer(GLObject));
        it->geometryPoints.push_back(newIndex);
    } else if (GLObject) {
        auto& layerContainer = mySortedSelectedObjects[GLObject->getType() * -1];
        auto it = layerContainer.insert(layerContainer.begin(), ObjectContainer(GLObject));
        it->geometryPoints.push_back(newIndex);
    }
    mySelectedObjects[GLObject] = false;
    return true;
}
 
 
bool
GUIViewObjectsHandler::addPositionOverShape(const GUIGlObject* GLObject, const Position& pos, const double offset) {
    // avoid to insert duplicated elements
    for (auto& elementLayer : mySortedSelectedObjects) {
        for (auto& element : elementLayer.second) {
            if (element.object == GLObject) {
                if (element.posOverShape != Position::INVALID) {
                    return false;
                } else {
                    // set position and offset over shape
                    element.posOverShape = pos;
                    element.offset = offset;
                    return true;
                }
            }
        }
    }
    // no element found then add it
    const auto layer = dynamic_cast<const Shape*>(GLObject);
    if (layer) {
        auto& layerContainer = mySortedSelectedObjects[layer->getShapeLayer() * -1];
        auto it = layerContainer.insert(layerContainer.begin(), ObjectContainer(GLObject));
        it->posOverShape = pos;
    } else if (GLObject) {
        auto& layerContainer = mySortedSelectedObjects[GLObject->getType() * -1];
        auto it = layerContainer.insert(layerContainer.begin(), ObjectContainer(GLObject));
        it->posOverShape = pos;
    }
    mySelectedObjects[GLObject] = false;
    return true;
}
 
 
const GUIViewObjectsHandler::GLObjectsSortedContainer&
GUIViewObjectsHandler::getSelectedObjects() const {
    return mySortedSelectedObjects;
}
 
 
const std::vector<int>&
GUIViewObjectsHandler::getGeometryPoints(const GUIGlObject* GLObject) const {
    // avoid to insert duplicated elements
    for (auto& elementLayer : mySortedSelectedObjects) {
        for (auto& element : elementLayer.second) {
            if (element.object == GLObject) {
                return element.geometryPoints;
            }
        }
    }
    return myEmptyGeometryPoints;
}
 
 
const Position&
GUIViewObjectsHandler::getPositionOverShape(const GUIGlObject* GLObject) const {
    // avoid to insert duplicated elements
    for (auto& elementLayer : mySortedSelectedObjects) {
        for (auto& element : elementLayer.second) {
            if (element.object == GLObject) {
                return element.posOverShape;
            }
        }
    }
    return Position::INVALID;
}
 
 
void
GUIViewObjectsHandler::updateFrontElement(const GUIGlObject* GLObject) {
    ObjectContainer frontElement(nullptr);
    // extract element
    for (auto& elementLayer : mySortedSelectedObjects) {
        auto it = elementLayer.second.begin();
        while (it != elementLayer.second.end()) {
            if (it->object == GLObject) {
                // copy element to front element
                frontElement.object = it->object;
                frontElement.geometryPoints = it->geometryPoints;
                // remove element from myElementsUnderCursor
                it = elementLayer.second.erase(it);
            } else {
                it++;
            }
        }
    }
    // add element again wit a new layer
    if (frontElement.object) {
        mySortedSelectedObjects[(double)GLO_FRONTELEMENT].push_back(frontElement);
    }
}
 
 
void
GUIViewObjectsHandler::isolateEdgeGeometryPoints() {
    // declare object container for edge
    ObjectContainer edgeWithGeometryPoints(nullptr);
    // check if there are edges with geometry points in mySortedSelectedObjects
    for (auto& elementLayer : mySortedSelectedObjects) {
        for (auto element : elementLayer.second) {
            if ((element.object->getType() == GLO_EDGE) && (element.geometryPoints.size() > 0)) {
                edgeWithGeometryPoints = element;
            }
        }
    }
    // continue if something was found
    if (edgeWithGeometryPoints.object != nullptr) {
        // clear all selected objects
        mySortedSelectedObjects.clear();
        // add edge with geometry points as front element
        mySortedSelectedObjects[(double)GLO_FRONTELEMENT].push_back(edgeWithGeometryPoints);
    }
}
 
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