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PathTool.cpp
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PathTool.cpp
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/*
* The Simple Earth Project
* Copyright (C) 2022 HueSoft LLC
* Author: Hector Mendoza, hector.mendoza@huesoftllc.com
*
* This file is part of the Simple Earth Project.
*
* The Simple Earth Project 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
* 3 of the License, or (at your option) any later version.
*
* This program 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 this program. If not, see
* <http://www.gnu.org/licenses/>.
*/
#include <QtOpenGL>
#include "PathTool.h"
#include "PathRenderer.h"
#include "WorldObjectManager.h"
#include "Utilities.h"
//++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
/**
* Constructor. Calls parent constructor with given parameter values and
* initializes attributes.
*
* @param toolButton Handle to corresponding toolbar button
* @param dialog Handle to corresponding dialog
*/
PathTool::PathTool(QToolButton* toolButton, QDialog* dialog) : Tool("Path", toolButton, dialog)
//++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
{
mCurrentNumberOfPoints = 0;
mClickCordinates.x = 0;
mClickCordinates.y = 0;
mAddPoint = false;
mColor.red = 1.0f;
mColor.green = 1.0f;
mColor.blue = 1.0f;
mColor.alpha = 1.0f;
}
//++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
/**
* Destructor.
*/
PathTool::~PathTool()
//++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
{
}
//++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
/**
* This method is called to initialize attributes for path tool rendering.
*/
void PathTool::initialize()
//++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
{
mCurrentNumberOfPoints = 0;
mAddPoint = false;
}
//++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
/**
* OVERRIDE FOR Tool. Builds the geometry to render a temporary path for
* the tool.
*/
void PathTool::render()
//++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
{
//check if we need a projection computation because we are adding a point
if (mAddPoint && mCurrentNumberOfPoints < MAX_NUMBER_OF_POINTS)
{
//convert click coordinates and add point to our list
mPoints[mCurrentNumberOfPoints] = Utilities::screenToWorld(mClickCordinates);
mAddPoint = false;
mCurrentNumberOfPoints++;
}
//render path
glColor4f(mColor.red, mColor.green, mColor.blue, 1.0f);
glDisable(GL_DEPTH_TEST);
glLineWidth(2.0f);
glBegin(GL_LINE_STRIP);
for (int i = 0; i < mCurrentNumberOfPoints; i++)
{
glVertex3f(mPoints[i].x, mPoints[i].y, mPoints[i].z);
}
glEnd();
glLineWidth(1.0f);
glEnable(GL_DEPTH_TEST);
}
//++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
/**
* Sets the name for this path.
*
* @param name New name for this path
*/
void PathTool::setName(const QString& name)
//++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
{
mName = name;
}
//++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
/**
* Sets the color for this path.
*
* @param color New color for this path
*/
void PathTool::setColor(const SimpleColor& color)
//++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
{
mColor = color;
}
//++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
/**
* Adds current path to WorldObjectManager's list. Note how we copy all the local
* to a new instance of a path world object.
*/
bool PathTool::addCurrent()
//++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
{
bool returnValue = true;
//only add path if it has more than 1 point
if (mCurrentNumberOfPoints > 1)
{
WorldObject* worldObject = new WorldObject();
worldObject->setName(mName);
worldObject->setColor(mColor);
worldObject->setGroup(WorldObject::PATH);
//instantiate path renderer and associate it with world object
PathRenderer* pathRenderer = new PathRenderer();
for (int i = 0; i < mCurrentNumberOfPoints; i++)
{
pathRenderer->addPoint(mPoints[i]);
}
worldObject->setMeshRenderer(pathRenderer);
//if object already exists (cannot add) perform cleanup
if (!WorldObjectManager::getInstance()->addWorldObject(worldObject))
{
//note: the path renderer that we associated with this world
//object will get deleted on the world object's destructor
delete worldObject;
returnValue = false;
}
}
return returnValue;
}
//++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
/**
* Called on a right mouse button release event when the path tools is selected.
*
* @param event Qt's mouse event
*/
void PathTool::onMouseReleaseEvent(QMouseEvent* event)
//++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
{
mClickCordinates.x = event->x();
mClickCordinates.y = event->y();
mAddPoint = true;
}