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78 lines
2.7 KiB
C++
78 lines
2.7 KiB
C++
/**
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* @file
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* @brief Header file for Coordinate class
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* @author Jonathan Thomas <jonathan@openshot.org>
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*
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* @ref License
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*/
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/* LICENSE
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*
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* Copyright (c) 2008-2019 OpenShot Studios, LLC
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* <http://www.openshotstudios.com/>. This file is part of
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* OpenShot Library (libopenshot), an open-source project dedicated to
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* delivering high quality video editing and animation solutions to the
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* world. For more information visit <http://www.openshot.org/>.
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*
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* OpenShot Library (libopenshot) is free software: you can redistribute it
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* and/or modify it under the terms of the GNU Lesser General Public License
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* as published by the Free Software Foundation, either version 3 of the
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* License, or (at your option) any later version.
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*
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* OpenShot Library (libopenshot) is distributed in the hope that it will be
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* useful, but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public License
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* along with OpenShot Library. If not, see <http://www.gnu.org/licenses/>.
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*/
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#ifndef OPENSHOT_COORDINATE_H
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#define OPENSHOT_COORDINATE_H
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#include <iostream>
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#include "Exceptions.h"
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#include "Fraction.h"
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#include "Json.h"
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namespace openshot {
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/**
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* @brief This class represents a Cartesian coordinate (X, Y) used in the Keyframe animation system.
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*
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* Animation involves the changing (i.e. interpolation) of numbers over time. A series of Coordinate
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* objects allows us to plot a specific curve or line used during interpolation. In other words, it helps us
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* control how a number changes over time (quickly or slowly).
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*
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* Please see the following <b>Example Code</b>:
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* \code
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* Coordinate c1(2,4);
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* assert(c1.X == 2.0f);
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* assert(c1.Y == 4.0f);
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* \endcode
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*/
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class Coordinate {
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public:
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double X; ///< The X value of the coordinate (usually representing the frame #)
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double Y; ///< The Y value of the coordinate (usually representing the value of the property being animated)
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/// The default constructor, which defaults to (0,0)
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Coordinate();
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/// @brief Constructor which also sets the X and Y
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/// @param x The X coordinate (usually representing the frame #)
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/// @param y The Y coordinate (usually representing the value of the property being animated)
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Coordinate(double x, double y);
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/// Get and Set JSON methods
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std::string Json(); ///< Generate JSON string of this object
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Json::Value JsonValue(); ///< Generate Json::JsonValue for this object
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void SetJson(std::string value); ///< Load JSON string into this object
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void SetJsonValue(Json::Value root); ///< Load Json::JsonValue into this object
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};
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}
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#endif
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