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////////////////////////////////////////////////////////////
//
// SFML - Simple and Fast Multimedia Library
// Copyright (C) 2007-2015 Laurent Gomila (laurent@sfml-dev.org)
//
// This software is provided 'as-is', without any express or implied warranty.
// In no event will the authors be held liable for any damages arising from the use of this software.
//
// Permission is granted to anyone to use this software for any purpose,
// including commercial applications, and to alter it and redistribute it freely,
// subject to the following restrictions:
//
// 1. The origin of this software must not be misrepresented;
// you must not claim that you wrote the original software.
// If you use this software in a product, an acknowledgment
// in the product documentation would be appreciated but is not required.
//
// 2. Altered source versions must be plainly marked as such,
// and must not be misrepresented as being the original software.
//
// 3. This notice may not be removed or altered from any source distribution.
//
////////////////////////////////////////////////////////////
#ifndef SFML_VERTEXARRAY_HPP
#define SFML_VERTEXARRAY_HPP
////////////////////////////////////////////////////////////
// Headers
////////////////////////////////////////////////////////////
#include <SFML/Graphics/Export.hpp>
#include <SFML/Graphics/Vertex.hpp>
#include <SFML/Graphics/PrimitiveType.hpp>
#include <SFML/Graphics/Rect.hpp>
#include <SFML/Graphics/Drawable.hpp>
#include <vector>
namespace sf
{
////////////////////////////////////////////////////////////
/// \brief Define a set of one or more 2D primitives
///
////////////////////////////////////////////////////////////
class SFML_GRAPHICS_API VertexArray : public Drawable
{
public:
////////////////////////////////////////////////////////////
/// \brief Default constructor
///
/// Creates an empty vertex array.
///
////////////////////////////////////////////////////////////
VertexArray();
////////////////////////////////////////////////////////////
/// \brief Construct the vertex array with a type and an initial number of vertices
///
/// \param type Type of primitives
/// \param vertexCount Initial number of vertices in the array
///
////////////////////////////////////////////////////////////
explicit VertexArray(PrimitiveType type, std::size_t vertexCount = 0);
////////////////////////////////////////////////////////////
/// \brief Return the vertex count
///
/// \return Number of vertices in the array
///
////////////////////////////////////////////////////////////
std::size_t getVertexCount() const;
////////////////////////////////////////////////////////////
/// \brief Get a read-write access to a vertex by its index
///
/// This function doesn't check \a index, it must be in range
/// [0, getVertexCount() - 1]. The behavior is undefined
/// otherwise.
///
/// \param index Index of the vertex to get
///
/// \return Reference to the index-th vertex
///
/// \see getVertexCount
///
////////////////////////////////////////////////////////////
Vertex& operator [](std::size_t index);
////////////////////////////////////////////////////////////
/// \brief Get a read-only access to a vertex by its index
///
/// This function doesn't check \a index, it must be in range
/// [0, getVertexCount() - 1]. The behavior is undefined
/// otherwise.
///
/// \param index Index of the vertex to get
///
/// \return Const reference to the index-th vertex
///
/// \see getVertexCount
///
////////////////////////////////////////////////////////////
const Vertex& operator [](std::size_t index) const;
////////////////////////////////////////////////////////////
/// \brief Clear the vertex array
///
/// This function removes all the vertices from the array.
/// It doesn't deallocate the corresponding memory, so that
/// adding new vertices after clearing doesn't involve
/// reallocating all the memory.
///
////////////////////////////////////////////////////////////
void clear();
////////////////////////////////////////////////////////////
/// \brief Resize the vertex array
///
/// If \a vertexCount is greater than the current size, the previous
/// vertices are kept and new (default-constructed) vertices are
/// added.
/// If \a vertexCount is less than the current size, existing vertices
/// are removed from the array.
///
/// \param vertexCount New size of the array (number of vertices)
///
////////////////////////////////////////////////////////////
void resize(std::size_t vertexCount);
////////////////////////////////////////////////////////////
/// \brief Add a vertex to the array
///
/// \param vertex Vertex to add
///
////////////////////////////////////////////////////////////
void append(const Vertex& vertex);
////////////////////////////////////////////////////////////
/// \brief Set the type of primitives to draw
///
/// This function defines how the vertices must be interpreted
/// when it's time to draw them:
/// \li As points
/// \li As lines
/// \li As triangles
/// \li As quads
/// The default primitive type is sf::Points.
///
/// \param type Type of primitive
///
////////////////////////////////////////////////////////////
void setPrimitiveType(PrimitiveType type);
////////////////////////////////////////////////////////////
/// \brief Get the type of primitives drawn by the vertex array
///
/// \return Primitive type
///
////////////////////////////////////////////////////////////
PrimitiveType getPrimitiveType() const;
////////////////////////////////////////////////////////////
/// \brief Compute the bounding rectangle of the vertex array
///
/// This function returns the minimal axis-aligned rectangle
/// that contains all the vertices of the array.
///
/// \return Bounding rectangle of the vertex array
///
////////////////////////////////////////////////////////////
FloatRect getBounds() const;
private:
////////////////////////////////////////////////////////////
/// \brief Draw the vertex array to a render target
///
/// \param target Render target to draw to
/// \param states Current render states
///
////////////////////////////////////////////////////////////
virtual void draw(RenderTarget& target, RenderStates states) const;
private:
////////////////////////////////////////////////////////////
// Member data
////////////////////////////////////////////////////////////
std::vector<Vertex> m_vertices; ///< Vertices contained in the array
PrimitiveType m_primitiveType; ///< Type of primitives to draw
};
} // namespace sf
#endif // SFML_VERTEXARRAY_HPP
////////////////////////////////////////////////////////////
/// \class sf::VertexArray
/// \ingroup graphics
///
/// sf::VertexArray is a very simple wrapper around a dynamic
/// array of vertices and a primitives type.
///
/// It inherits sf::Drawable, but unlike other drawables it
/// is not transformable.
///
/// Example:
/// \code
/// sf::VertexArray lines(sf::LinesStrip, 4);
/// lines[0].position = sf::Vector2f(10, 0);
/// lines[1].position = sf::Vector2f(20, 0);
/// lines[2].position = sf::Vector2f(30, 5);
/// lines[3].position = sf::Vector2f(40, 2);
///
/// window.draw(lines);
/// \endcode
///
/// \see sf::Vertex
///
////////////////////////////////////////////////////////////
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