axmol/core/2d/SpriteFrame.h

/****************************************************************************
Copyright (c) 2008-2011 Ricardo Quesada
Copyright (c) 2010-2012 cocos2d-x.org
Copyright (c) 2011      Zynga Inc.
Copyright (c) 2013-2016 Chukong Technologies Inc.
Copyright (c) 2017-2018 Xiamen Yaji Software Co., Ltd.
Copyright (c) 2019-present Axmol Engine contributors (see AUTHORS.md).

https://axmol.dev/

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The above copyright notice and this permission notice shall be included in
all copies or substantial portions of the Software.

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IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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****************************************************************************/

#ifndef __SPRITE_CCSPRITE_FRAME_H__
#define __SPRITE_CCSPRITE_FRAME_H__

#include "2d/Node.h"
#include "2d/AutoPolygon.h"
#include "base/Object.h"
#include "math/Math.h"

NS_AX_BEGIN

class Texture2D;

/**
 * @addtogroup _2d
 * @{
 */

/** @class SpriteFrame
 * @brief A SpriteFrame has:
    - texture: A Texture2D that will be used by the Sprite
    - rectangle: A rectangle of the texture


 You can modify the frame of a Sprite by doing:

 @code
    SpriteFrame* frame = SpriteFrame::createWithTexture(texture, rect);
    sprite->setSpriteFrame(frame);
 @endcode
 */
class AX_DLL SpriteFrame : public Object, public Clonable
{
public:
    /** Create a SpriteFrame with a texture filename, rect in points.
     It is assumed that the frame was not trimmed.
     *
     * @param filename Texture file name.
     * @param rect A specified rect.
     * @return An autoreleased SpriteFrame object.
     */
    static SpriteFrame* create(std::string_view filename, const Rect& rect);

    /** Create a SpriteFrame with a texture filename, rect, rotated, offset and originalSize in pixels.
     The originalSize is the size in pixels of the frame before being trimmed.
     *
     * @param filename Texture filename
     * @param rect A specified rect.
     * @param rotated Is rotated if true.
     * @param offset A specified offset.
     * @param originalSize A specified original size.
     * @return An autoreleased SpriteFrame object.
     */
    static SpriteFrame* create(std::string_view filename,
                               const Rect& rect,
                               bool rotated,
                               const Vec2& offset,
                               const Vec2& originalSize);

    /** Create a SpriteFrame with a texture, rect in points.
     It is assumed that the frame was not trimmed.
     * @param pobTexture The texture pointer.
     * @param rect A specified rect.
     * @return An autoreleased SpriteFrame object.
     */
    static SpriteFrame* createWithTexture(Texture2D* pobTexture, const Rect& rect);

    /** Create a SpriteFrame with a texture, rect, rotated, offset and originalSize in pixels.
     The originalSize is the size in points of the frame before being trimmed.
     * @param pobTexture The texture pointer.
     * @param rect A specified rect.
     * @param rotated Is rotated if true.
     * @param offset A specified offset.
     * @param originalSize A specified original size.
     * @return An autoreleased SpriteFrame object.
     */
    static SpriteFrame* createWithTexture(Texture2D* pobTexture,
                                          const Rect& rect,
                                          bool rotated,
                                          const Vec2& offset,
                                          const Vec2& originalSize);

    // attributes
    /** Get rect of the sprite frame.
     *
     * @return The rect of the sprite frame, in pixels.
     */
    const Rect& getRectInPixels() const { return _rectInPixels; }
    /** Set rect of the sprite frame.
     *
     * @param rectInPixels The rect of the sprite frame, in pixels.
     */
    void setRectInPixels(const Rect& rectInPixels);

    /**Is the sprite frame rotated or not.
     *
     * @return Is rotated if true.
     */
    bool isRotated() const { return _rotated; }
    /** Set rotated of the sprite frame.
     *
     * @param rotated Rotated the sprite frame if true.
     */
    void setRotated(bool rotated) { _rotated = rotated; }

    /** Get rect of the frame.
     *
     * @return The rect of the sprite frame.
     */
    const Rect& getRect() const { return _rect; }
    /** Set rect of the frame.
     *
     * @param rect The rect of the sprite.
     */
    void setRect(const Rect& rect);

    /** Get center rect of the frame.
     *
     * Useful to create 9-slice sprites
     *
     * @return The center rect of the sprite frame in points
     */
    const Rect& getCenterRect() const { return _centerRect; }

    /**
     * setCenterRect
     *
     * Useful to implement "9 sliced" sprites.
     * The sprite will be sliced into a 3 x 3 grid. The four corners of this grid are applied without
     * performing any scaling. The upper- and lower-middle parts are scaled horizontally, and the left- and right-middle
     * parts are scaled vertically. The center is scaled in both directions. Important: The scaling is based the
     * Sprite's trimmed size.
     *
     * Limitations: Does not work when the sprite is part of `SpriteBatchNode`.
     * @param centerRect the Rect in points
     */
    void setCenterRectInPixels(const Rect& centerRect);

    /** hasCenterRect
     @return Whether or not it has a centerRect
     */
    bool hasCenterRect() const;

    /** Get offset of the frame.
     *
     * @return The offset of the sprite frame, in pixels.
     */
    const Vec2& getOffsetInPixels() const;
    /** Set offset of the frame.
     *
     * @param offsetInPixels The offset of the sprite frame, in pixels.
     */
    void setOffsetInPixels(const Vec2& offsetInPixels);

    /** Get original size of the trimmed image.
     *
     * @return The original size of the trimmed image, in pixels.
     */
    const Vec2& getOriginalSizeInPixels() const { return _originalSizeInPixels; }
    /** Set original size of the trimmed image.
     *
     * @param sizeInPixels The original size of the trimmed image, in pixels.
     */
    void setOriginalSizeInPixels(const Vec2& sizeInPixels) { _originalSizeInPixels = sizeInPixels; }

    /** Get original size of the trimmed image.
     *
     * @return The original size of the trimmed image.
     */
    const Vec2& getOriginalSize() const { return _originalSize; }
    /** Set original size of the trimmed image.
     *
     * @param sizeInPixels The original size of the trimmed image.
     */
    void setOriginalSize(const Vec2& sizeInPixels) { _originalSize = sizeInPixels; }

    /** Get texture of the frame.
     *
     * @return The texture of the sprite frame.
     */
    Texture2D* getTexture();
    /** Set texture of the frame, the texture is retained.
     *
     * @param pobTexture The texture of the sprite frame.
     */
    void setTexture(Texture2D* pobTexture);

    /** Get offset of the frame.
     *
     * @return The offset of the sprite frame.
     */
    const Vec2& getOffset() const;
    /** Set offset of the frame.
     *
     * @param offsets The offset of the sprite frame.
     */
    void setOffset(const Vec2& offsets);

    /** Get anchor point of the frame.
     *
     * @return The anchor point of the sprite frame.
     */
    const Vec2& getAnchorPoint() const;
    /** Set anchor point of the frame.
     *
     * @param anchorPoint The anchor point of the sprite frame.
     */
    void setAnchorPoint(const Vec2& anchorPoint);
    /** Check if anchor point is defined for the frame.
     *
     * @return true if anchor point is available.
     */
    bool hasAnchorPoint() const;

    // Overrides
    virtual SpriteFrame* clone() const override;

    /** Set the polygon info for polygon mesh sprites
     *
     * @param polygonInfo triangle mesh of the sprite
     */
    void setPolygonInfo(const PolygonInfo& polygonInfo);

    /** Get the polygonInfo for this sprite
     *
     * @return a reference to the polygonInfo structure
     */
    const PolygonInfo& getPolygonInfo() const;

    /** Check if sprite frame is a polygon sprite
     *
     * @return true if polygonInfo is available
     */
    bool hasPolygonInfo() const;

    /**
     * @lua NA
     */
    SpriteFrame();

    /**
     * @lua NA
     */
    virtual ~SpriteFrame();

    /** Initializes a SpriteFrame with a texture, rect in points.
     It is assumed that the frame was not trimmed.
     */
    bool initWithTexture(Texture2D* pobTexture, const Rect& rect);

    /** Initializes a SpriteFrame with a texture filename, rect in points;
     It is assumed that the frame was not trimmed.
     */
    bool initWithTextureFilename(std::string_view filename, const Rect& rect);

    /** Initializes a SpriteFrame with a texture, rect, rotated, offset and originalSize in pixels.
     The originalSize is the size in points of the frame before being trimmed.
     */
    bool initWithTexture(Texture2D* pobTexture,
                         const Rect& rect,
                         bool rotated,
                         const Vec2& offset,
                         const Vec2& originalSize);

    /** Initializes a SpriteFrame with a texture, rect, rotated, offset and originalSize in pixels.
     The originalSize is the size in pixels of the frame before being trimmed.

     @since v1.1
     */
    bool initWithTextureFilename(std::string_view filename,
                                 const Rect& rect,
                                 bool rotated,
                                 const Vec2& offset,
                                 const Vec2& originalSize);

protected:
    Vec2 _offset;
    Vec2 _anchorPoint;
    Vec2 _originalSize;
    Rect _rectInPixels;
    bool _rotated;
    Rect _rect;
    Rect _centerRect;
    Vec2 _offsetInPixels;
    Vec2 _originalSizeInPixels;
    Texture2D* _texture;
    std::string _textureFilename;
    PolygonInfo _polygonInfo;
};

// end of _2d group
/// @}

NS_AX_END

#endif  //__SPRITE_CCSPRITE_FRAME_H__