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413 lines
15 KiB
C
413 lines
15 KiB
C
////////////////////////////////////////////////////////////
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//
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// SFML - Simple and Fast Multimedia Library
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// Copyright (C) 2007-2015 Laurent Gomila (laurent@sfml-dev.org)
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//
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// This software is provided 'as-is', without any express or implied warranty.
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// In no event will the authors be held liable for any damages arising from the use of this software.
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//
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// Permission is granted to anyone to use this software for any purpose,
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// including commercial applications, and to alter it and redistribute it freely,
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// subject to the following restrictions:
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//
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// 1. The origin of this software must not be misrepresented;
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// you must not claim that you wrote the original software.
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// If you use this software in a product, an acknowledgment
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// in the product documentation would be appreciated but is not required.
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//
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// 2. Altered source versions must be plainly marked as such,
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// and must not be misrepresented as being the original software.
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//
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// 3. This notice may not be removed or altered from any source distribution.
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//
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////////////////////////////////////////////////////////////
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#ifndef SFML_SHAPE_H
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#define SFML_SHAPE_H
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////////////////////////////////////////////////////////////
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// Headers
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////////////////////////////////////////////////////////////
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#include <SFML/Graphics/Export.h>
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#include <SFML/Graphics/Color.h>
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#include <SFML/Graphics/Rect.h>
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#include <SFML/Graphics/Transform.h>
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#include <SFML/Graphics/Types.h>
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#include <SFML/System/Vector2.h>
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typedef unsigned int (*sfShapeGetPointCountCallback)(void*); ///< Type of the callback used to get the number of points in a shape
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typedef sfVector2f (*sfShapeGetPointCallback)(unsigned int, void*); ///< Type of the callback used to get a point of a shape
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////////////////////////////////////////////////////////////
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/// \brief Create a new shape
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///
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/// \param getPointCount Callback that provides the point count of the shape
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/// \param getPoint Callback that provides the points of the shape
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/// \param userData Data to pass to the callback functions
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///
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/// \return A new sfShape object
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///
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////////////////////////////////////////////////////////////
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CSFML_GRAPHICS_API sfShape* sfShape_create(sfShapeGetPointCountCallback getPointCount,
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sfShapeGetPointCallback getPoint,
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void* userData);
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////////////////////////////////////////////////////////////
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/// \brief Destroy an existing shape
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///
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/// \param Shape Shape to delete
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///
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////////////////////////////////////////////////////////////
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CSFML_GRAPHICS_API void sfShape_destroy(sfShape* shape);
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////////////////////////////////////////////////////////////
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/// \brief Set the position of a shape
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///
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/// This function completely overwrites the previous position.
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/// See sfShape_move to apply an offset based on the previous position instead.
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/// The default position of a circle Shape object is (0, 0).
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///
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/// \param shape Shape object
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/// \param position New position
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///
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////////////////////////////////////////////////////////////
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CSFML_GRAPHICS_API void sfShape_setPosition(sfShape* shape, sfVector2f position);
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////////////////////////////////////////////////////////////
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/// \brief Set the orientation of a shape
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///
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/// This function completely overwrites the previous rotation.
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/// See sfShape_rotate to add an angle based on the previous rotation instead.
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/// The default rotation of a circle Shape object is 0.
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///
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/// \param shape Shape object
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/// \param angle New rotation, in degrees
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///
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////////////////////////////////////////////////////////////
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CSFML_GRAPHICS_API void sfShape_setRotation(sfShape* shape, float angle);
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////////////////////////////////////////////////////////////
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/// \brief Set the scale factors of a shape
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///
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/// This function completely overwrites the previous scale.
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/// See sfShape_scale to add a factor based on the previous scale instead.
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/// The default scale of a circle Shape object is (1, 1).
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///
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/// \param shape Shape object
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/// \param scale New scale factors
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///
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////////////////////////////////////////////////////////////
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CSFML_GRAPHICS_API void sfShape_setScale(sfShape* shape, sfVector2f scale);
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////////////////////////////////////////////////////////////
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/// \brief Set the local origin of a shape
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///
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/// The origin of an object defines the center point for
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/// all transformations (position, scale, rotation).
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/// The coordinates of this point must be relative to the
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/// top-left corner of the object, and ignore all
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/// transformations (position, scale, rotation).
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/// The default origin of a circle Shape object is (0, 0).
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///
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/// \param shape Shape object
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/// \param origin New origin
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///
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////////////////////////////////////////////////////////////
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CSFML_GRAPHICS_API void sfShape_setOrigin(sfShape* shape, sfVector2f origin);
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////////////////////////////////////////////////////////////
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/// \brief Get the position of a shape
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///
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/// \param shape Shape object
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///
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/// \return Current position
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///
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////////////////////////////////////////////////////////////
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CSFML_GRAPHICS_API sfVector2f sfShape_getPosition(const sfShape* shape);
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////////////////////////////////////////////////////////////
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/// \brief Get the orientation of a shape
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///
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/// The rotation is always in the range [0, 360].
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///
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/// \param shape Shape object
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///
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/// \return Current rotation, in degrees
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///
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////////////////////////////////////////////////////////////
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CSFML_GRAPHICS_API float sfShape_getRotation(const sfShape* shape);
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////////////////////////////////////////////////////////////
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/// \brief Get the current scale of a shape
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///
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/// \param shape Shape object
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///
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/// \return Current scale factors
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///
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////////////////////////////////////////////////////////////
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CSFML_GRAPHICS_API sfVector2f sfShape_getScale(const sfShape* shape);
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////////////////////////////////////////////////////////////
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/// \brief Get the local origin of a shape
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///
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/// \param shape Shape object
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///
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/// \return Current origin
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///
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////////////////////////////////////////////////////////////
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CSFML_GRAPHICS_API sfVector2f sfShape_getOrigin(const sfShape* shape);
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////////////////////////////////////////////////////////////
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/// \brief Move a shape by a given offset
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///
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/// This function adds to the current position of the object,
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/// unlike sfShape_setPosition which overwrites it.
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///
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/// \param shape Shape object
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/// \param offset Offset
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///
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////////////////////////////////////////////////////////////
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CSFML_GRAPHICS_API void sfShape_move(sfShape* shape, sfVector2f offset);
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////////////////////////////////////////////////////////////
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/// \brief Rotate a shape
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///
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/// This function adds to the current rotation of the object,
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/// unlike sfShape_setRotation which overwrites it.
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///
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/// \param shape Shape object
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/// \param angle Angle of rotation, in degrees
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///
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////////////////////////////////////////////////////////////
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CSFML_GRAPHICS_API void sfShape_rotate(sfShape* shape, float angle);
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////////////////////////////////////////////////////////////
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/// \brief Scale a shape
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///
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/// This function multiplies the current scale of the object,
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/// unlike sfShape_setScale which overwrites it.
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///
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/// \param shape Shape object
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/// \param factors Scale factors
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///
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////////////////////////////////////////////////////////////
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CSFML_GRAPHICS_API void sfShape_scale(sfShape* shape, sfVector2f factors);
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////////////////////////////////////////////////////////////
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/// \brief Get the combined transform of a shape
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///
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/// \param shape shape object
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///
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/// \return Transform combining the position/rotation/scale/origin of the object
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///
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////////////////////////////////////////////////////////////
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CSFML_GRAPHICS_API sfTransform sfShape_getTransform(const sfShape* shape);
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////////////////////////////////////////////////////////////
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/// \brief Get the inverse of the combined transform of a shape
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///
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/// \param shape shape object
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///
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/// \return Inverse of the combined transformations applied to the object
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///
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////////////////////////////////////////////////////////////
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CSFML_GRAPHICS_API sfTransform sfShape_getInverseTransform(const sfShape* shape);
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////////////////////////////////////////////////////////////
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/// \brief Change the source texture of a shape
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///
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/// The \a texture argument refers to a texture that must
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/// exist as long as the shape uses it. Indeed, the shape
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/// doesn't store its own copy of the texture, but rather keeps
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/// a pointer to the one that you passed to this function.
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/// If the source texture is destroyed and the shape tries to
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/// use it, the behaviour is undefined.
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/// \a texture can be NULL to disable texturing.
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/// If \a resetRect is true, the TextureRect property of
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/// the shape is automatically adjusted to the size of the new
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/// texture. If it is false, the texture rect is left unchanged.
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///
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/// \param shape Shape object
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/// \param texture New texture
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/// \param resetRect Should the texture rect be reset to the size of the new texture?
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///
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////////////////////////////////////////////////////////////
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CSFML_GRAPHICS_API void sfShape_setTexture(sfShape* shape, const sfTexture* texture, sfBool resetRect);
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////////////////////////////////////////////////////////////
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/// \brief Set the sub-rectangle of the texture that a shape will display
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///
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/// The texture rect is useful when you don't want to display
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/// the whole texture, but rather a part of it.
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/// By default, the texture rect covers the entire texture.
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///
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/// \param shape Shape object
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/// \param rect Rectangle defining the region of the texture to display
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///
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////////////////////////////////////////////////////////////
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CSFML_GRAPHICS_API void sfShape_setTextureRect(sfShape* shape, sfIntRect rect);
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////////////////////////////////////////////////////////////
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/// \brief Set the fill color of a shape
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///
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/// This color is modulated (multiplied) with the shape's
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/// texture if any. It can be used to colorize the shape,
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/// or change its global opacity.
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/// You can use sfTransparent to make the inside of
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/// the shape transparent, and have the outline alone.
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/// By default, the shape's fill color is opaque white.
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///
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/// \param shape Shape object
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/// \param color New color of the shape
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///
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////////////////////////////////////////////////////////////
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CSFML_GRAPHICS_API void sfShape_setFillColor(sfShape* shape, sfColor color);
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////////////////////////////////////////////////////////////
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/// \brief Set the outline color of a shape
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///
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/// You can use sfTransparent to disable the outline.
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/// By default, the shape's outline color is opaque white.
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///
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/// \param shape Shape object
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/// \param color New outline color of the shape
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///
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////////////////////////////////////////////////////////////
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CSFML_GRAPHICS_API void sfShape_setOutlineColor(sfShape* shape, sfColor color);
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////////////////////////////////////////////////////////////
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/// \brief Set the thickness of a shape's outline
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///
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/// This number cannot be negative. Using zero disables
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/// the outline.
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/// By default, the outline thickness is 0.
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///
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/// \param shape Shape object
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/// \param thickness New outline thickness
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///
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////////////////////////////////////////////////////////////
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CSFML_GRAPHICS_API void sfShape_setOutlineThickness(sfShape* shape, float thickness);
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////////////////////////////////////////////////////////////
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/// \brief Get the source texture of a shape
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///
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/// If the shape has no source texture, a NULL pointer is returned.
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/// The returned pointer is const, which means that you can't
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/// modify the texture when you retrieve it with this function.
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///
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/// \param shape Shape object
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///
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/// \return Pointer to the shape's texture
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///
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////////////////////////////////////////////////////////////
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CSFML_GRAPHICS_API const sfTexture* sfShape_getTexture(const sfShape* shape);
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////////////////////////////////////////////////////////////
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/// \brief Get the sub-rectangle of the texture displayed by a shape
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///
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/// \param shape Shape object
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///
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/// \return Texture rectangle of the shape
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///
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////////////////////////////////////////////////////////////
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CSFML_GRAPHICS_API sfIntRect sfShape_getTextureRect(const sfShape* shape);
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////////////////////////////////////////////////////////////
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/// \brief Get the fill color of a shape
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///
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/// \param shape Shape object
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///
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/// \return Fill color of the shape
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///
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////////////////////////////////////////////////////////////
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CSFML_GRAPHICS_API sfColor sfShape_getFillColor(const sfShape* shape);
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////////////////////////////////////////////////////////////
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/// \brief Get the outline color of a shape
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///
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/// \param shape Shape object
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///
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/// \return Outline color of the shape
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///
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////////////////////////////////////////////////////////////
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CSFML_GRAPHICS_API sfColor sfShape_getOutlineColor(const sfShape* shape);
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////////////////////////////////////////////////////////////
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/// \brief Get the outline thickness of a shape
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///
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/// \param shape Shape object
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///
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/// \return Outline thickness of the shape
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///
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////////////////////////////////////////////////////////////
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CSFML_GRAPHICS_API float sfShape_getOutlineThickness(const sfShape* shape);
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////////////////////////////////////////////////////////////
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/// \brief Get the total number of points of a shape
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///
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/// \param shape Shape object
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///
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/// \return Number of points of the shape
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///
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////////////////////////////////////////////////////////////
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CSFML_GRAPHICS_API unsigned int sfShape_getPointCount(const sfShape* shape);
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////////////////////////////////////////////////////////////
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/// \brief Get a point of a shape
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///
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/// The result is undefined if \a index is out of the valid range.
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///
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/// \param shape Shape object
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/// \param index Index of the point to get, in range [0 .. getPointCount() - 1]
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///
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/// \return Index-th point of the shape
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///
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////////////////////////////////////////////////////////////
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CSFML_GRAPHICS_API sfVector2f sfShape_getPoint(const sfShape* shape, unsigned int index);
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////////////////////////////////////////////////////////////
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/// \brief Get the local bounding rectangle of a shape
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///
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/// The returned rectangle is in local coordinates, which means
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/// that it ignores the transformations (translation, rotation,
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/// scale, ...) that are applied to the entity.
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/// In other words, this function returns the bounds of the
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/// entity in the entity's coordinate system.
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///
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/// \param shape Shape object
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///
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/// \return Local bounding rectangle of the entity
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///
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////////////////////////////////////////////////////////////
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CSFML_GRAPHICS_API sfFloatRect sfShape_getLocalBounds(const sfShape* shape);
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////////////////////////////////////////////////////////////
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/// \brief Get the global bounding rectangle of a shape
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///
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/// The returned rectangle is in global coordinates, which means
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/// that it takes in account the transformations (translation,
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/// rotation, scale, ...) that are applied to the entity.
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/// In other words, this function returns the bounds of the
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/// sprite in the global 2D world's coordinate system.
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///
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/// \param shape Shape object
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///
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/// \return Global bounding rectangle of the entity
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///
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////////////////////////////////////////////////////////////
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CSFML_GRAPHICS_API sfFloatRect sfShape_getGlobalBounds(const sfShape* shape);
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////////////////////////////////////////////////////////////
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/// \brief Recompute the internal geometry of a shape
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///
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/// This function must be called by specialized shape objects
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/// everytime their points change (ie. the result of either
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/// the getPointCount or getPoint callbacks is different).
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///
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////////////////////////////////////////////////////////////
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CSFML_GRAPHICS_API void sfShape_update(sfShape* shape);
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#endif // SFML_SHAPE_H
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