McRogueFace/deps_linux/SFML/Graphics/Shape.hpp

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////////////////////////////////////////////////////////////
//
// SFML - Simple and Fast Multimedia Library
// Copyright (C) 2007-2018 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_SHAPE_HPP
#define SFML_SHAPE_HPP
////////////////////////////////////////////////////////////
// Headers
////////////////////////////////////////////////////////////
#include <SFML/Graphics/Export.hpp>
#include <SFML/Graphics/Drawable.hpp>
#include <SFML/Graphics/Transformable.hpp>
#include <SFML/Graphics/VertexArray.hpp>
#include <SFML/System/Vector2.hpp>
namespace sf
{
////////////////////////////////////////////////////////////
/// \brief Base class for textured shapes with outline
///
////////////////////////////////////////////////////////////
class SFML_GRAPHICS_API Shape : public Drawable, public Transformable
{
public:
////////////////////////////////////////////////////////////
/// \brief Virtual destructor
///
////////////////////////////////////////////////////////////
virtual ~Shape();
////////////////////////////////////////////////////////////
/// \brief Change the source texture of the shape
///
/// The \a texture argument refers to a texture that must
/// exist as long as the shape uses it. Indeed, the shape
/// doesn't store its own copy of the texture, but rather keeps
/// a pointer to the one that you passed to this function.
/// If the source texture is destroyed and the shape tries to
/// use it, the behavior is undefined.
/// \a texture can be NULL to disable texturing.
/// If \a resetRect is true, the TextureRect property of
/// the shape is automatically adjusted to the size of the new
/// texture. If it is false, the texture rect is left unchanged.
///
/// \param texture New texture
/// \param resetRect Should the texture rect be reset to the size of the new texture?
///
/// \see getTexture, setTextureRect
///
////////////////////////////////////////////////////////////
void setTexture(const Texture* texture, bool resetRect = false);
////////////////////////////////////////////////////////////
/// \brief Set the sub-rectangle of the texture that the shape will display
///
/// The texture rect is useful when you don't want to display
/// the whole texture, but rather a part of it.
/// By default, the texture rect covers the entire texture.
///
/// \param rect Rectangle defining the region of the texture to display
///
/// \see getTextureRect, setTexture
///
////////////////////////////////////////////////////////////
void setTextureRect(const IntRect& rect);
////////////////////////////////////////////////////////////
/// \brief Set the fill color of the shape
///
/// This color is modulated (multiplied) with the shape's
/// texture if any. It can be used to colorize the shape,
/// or change its global opacity.
/// You can use sf::Color::Transparent to make the inside of
/// the shape transparent, and have the outline alone.
/// By default, the shape's fill color is opaque white.
///
/// \param color New color of the shape
///
/// \see getFillColor, setOutlineColor
///
////////////////////////////////////////////////////////////
void setFillColor(const Color& color);
////////////////////////////////////////////////////////////
/// \brief Set the outline color of the shape
///
/// By default, the shape's outline color is opaque white.
///
/// \param color New outline color of the shape
///
/// \see getOutlineColor, setFillColor
///
////////////////////////////////////////////////////////////
void setOutlineColor(const Color& color);
////////////////////////////////////////////////////////////
/// \brief Set the thickness of the shape's outline
///
/// Note that negative values are allowed (so that the outline
/// expands towards the center of the shape), and using zero
/// disables the outline.
/// By default, the outline thickness is 0.
///
/// \param thickness New outline thickness
///
/// \see getOutlineThickness
///
////////////////////////////////////////////////////////////
void setOutlineThickness(float thickness);
////////////////////////////////////////////////////////////
/// \brief Get the source texture of the shape
///
/// If the shape has no source texture, a NULL pointer is returned.
/// The returned pointer is const, which means that you can't
/// modify the texture when you retrieve it with this function.
///
/// \return Pointer to the shape's texture
///
/// \see setTexture
///
////////////////////////////////////////////////////////////
const Texture* getTexture() const;
////////////////////////////////////////////////////////////
/// \brief Get the sub-rectangle of the texture displayed by the shape
///
/// \return Texture rectangle of the shape
///
/// \see setTextureRect
///
////////////////////////////////////////////////////////////
const IntRect& getTextureRect() const;
////////////////////////////////////////////////////////////
/// \brief Get the fill color of the shape
///
/// \return Fill color of the shape
///
/// \see setFillColor
///
////////////////////////////////////////////////////////////
const Color& getFillColor() const;
////////////////////////////////////////////////////////////
/// \brief Get the outline color of the shape
///
/// \return Outline color of the shape
///
/// \see setOutlineColor
///
////////////////////////////////////////////////////////////
const Color& getOutlineColor() const;
////////////////////////////////////////////////////////////
/// \brief Get the outline thickness of the shape
///
/// \return Outline thickness of the shape
///
/// \see setOutlineThickness
///
////////////////////////////////////////////////////////////
float getOutlineThickness() const;
////////////////////////////////////////////////////////////
/// \brief Get the total number of points of the shape
///
/// \return Number of points of the shape
///
/// \see getPoint
///
////////////////////////////////////////////////////////////
virtual std::size_t getPointCount() const = 0;
////////////////////////////////////////////////////////////
/// \brief Get a point of the shape
///
/// The returned point is in local coordinates, that is,
/// the shape's transforms (position, rotation, scale) are
/// not taken into account.
/// The result is undefined if \a index is out of the valid range.
///
/// \param index Index of the point to get, in range [0 .. getPointCount() - 1]
///
/// \return index-th point of the shape
///
/// \see getPointCount
///
////////////////////////////////////////////////////////////
virtual Vector2f getPoint(std::size_t index) const = 0;
////////////////////////////////////////////////////////////
/// \brief Get the local bounding rectangle of the entity
///
/// The returned rectangle is in local coordinates, which means
/// that it ignores the transformations (translation, rotation,
/// scale, ...) that are applied to the entity.
/// In other words, this function returns the bounds of the
/// entity in the entity's coordinate system.
///
/// \return Local bounding rectangle of the entity
///
////////////////////////////////////////////////////////////
FloatRect getLocalBounds() const;
////////////////////////////////////////////////////////////
/// \brief Get the global (non-minimal) bounding rectangle of the entity
///
/// The returned rectangle is in global coordinates, which means
/// that it takes into account the transformations (translation,
/// rotation, scale, ...) that are applied to the entity.
/// In other words, this function returns the bounds of the
/// shape in the global 2D world's coordinate system.
///
/// This function does not necessarily return the \a minimal
/// bounding rectangle. It merely ensures that the returned
/// rectangle covers all the vertices (but possibly more).
/// This allows for a fast approximation of the bounds as a
/// first check; you may want to use more precise checks
/// on top of that.
///
/// \return Global bounding rectangle of the entity
///
////////////////////////////////////////////////////////////
FloatRect getGlobalBounds() const;
protected:
////////////////////////////////////////////////////////////
/// \brief Default constructor
///
////////////////////////////////////////////////////////////
Shape();
////////////////////////////////////////////////////////////
/// \brief Recompute the internal geometry of the shape
///
/// This function must be called by the derived class everytime
/// the shape's points change (i.e. the result of either
/// getPointCount or getPoint is different).
///
////////////////////////////////////////////////////////////
void update();
private:
////////////////////////////////////////////////////////////
/// \brief Draw the shape to a render target
///
/// \param target Render target to draw to
/// \param states Current render states
///
////////////////////////////////////////////////////////////
virtual void draw(RenderTarget& target, RenderStates states) const;
////////////////////////////////////////////////////////////
/// \brief Update the fill vertices' color
///
////////////////////////////////////////////////////////////
void updateFillColors();
////////////////////////////////////////////////////////////
/// \brief Update the fill vertices' texture coordinates
///
////////////////////////////////////////////////////////////
void updateTexCoords();
////////////////////////////////////////////////////////////
/// \brief Update the outline vertices' position
///
////////////////////////////////////////////////////////////
void updateOutline();
////////////////////////////////////////////////////////////
/// \brief Update the outline vertices' color
///
////////////////////////////////////////////////////////////
void updateOutlineColors();
private:
////////////////////////////////////////////////////////////
// Member data
////////////////////////////////////////////////////////////
const Texture* m_texture; ///< Texture of the shape
IntRect m_textureRect; ///< Rectangle defining the area of the source texture to display
Color m_fillColor; ///< Fill color
Color m_outlineColor; ///< Outline color
float m_outlineThickness; ///< Thickness of the shape's outline
VertexArray m_vertices; ///< Vertex array containing the fill geometry
VertexArray m_outlineVertices; ///< Vertex array containing the outline geometry
FloatRect m_insideBounds; ///< Bounding rectangle of the inside (fill)
FloatRect m_bounds; ///< Bounding rectangle of the whole shape (outline + fill)
};
} // namespace sf
#endif // SFML_SHAPE_HPP
////////////////////////////////////////////////////////////
/// \class sf::Shape
/// \ingroup graphics
///
/// sf::Shape is a drawable class that allows to define and
/// display a custom convex shape on a render target.
/// It's only an abstract base, it needs to be specialized for
/// concrete types of shapes (circle, rectangle, convex polygon,
/// star, ...).
///
/// In addition to the attributes provided by the specialized
/// shape classes, a shape always has the following attributes:
/// \li a texture
/// \li a texture rectangle
/// \li a fill color
/// \li an outline color
/// \li an outline thickness
///
/// Each feature is optional, and can be disabled easily:
/// \li the texture can be null
/// \li the fill/outline colors can be sf::Color::Transparent
/// \li the outline thickness can be zero
///
/// You can write your own derived shape class, there are only
/// two virtual functions to override:
/// \li getPointCount must return the number of points of the shape
/// \li getPoint must return the points of the shape
///
/// \see sf::RectangleShape, sf::CircleShape, sf::ConvexShape, sf::Transformable
///
////////////////////////////////////////////////////////////