axmol/extensions/cocostudio/ActionTimeline/CCBoneNode.h

/****************************************************************************
Copyright (c) 2015-2017 Chukong Technologies Inc.

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****************************************************************************/

#ifndef __CCBONENODE_H__
#define __CCBONENODE_H__

#include "base/CCProtocols.h"
#include "2d/CCNode.h"
#include "renderer/CCCustomCommand.h"
#include "ActionTimeline/CCTimelineMacro.h"
#include "CocosStudioExport.h"
#include "ActionTimeline/CCSkinNode.h"

namespace cocos2d
{
namespace backend
{
class ProgramState;
}
}  // namespace cocos2d

NS_TIMELINE_BEGIN

class SkeletonNode;

class CCS_DLL BoneNode : public cocos2d::Node, public cocos2d::BlendProtocol
{
public:
    static BoneNode* create();
    static BoneNode* create(int length);

    using Node::addChild;
    // add child, and add child to bone list and skeleton's sub bone map or add it to skin list
    virtual void addChild(cocos2d::Node* child, int localZOrder, std::string_view name) override;
    virtual void addChild(cocos2d::Node* child, int localZOrder, int tag) override;

    // remove child, and remove child from bone list and skeleton's sub bone map or remove it from skin list
    virtual void removeChild(Node* child, bool cleanup) override;

    // get child bone list
    virtual const cocos2d::Vector<BoneNode*>& getChildBones() const { return _childBones; }
    virtual cocos2d::Vector<BoneNode*>& getChildBones() { return _childBones; }

    // get this bone's root skeleton, return null while bone is not in a skeleton
    virtual SkeletonNode* getRootSkeletonNode() const;

    /**
     * @brief: get all bones in this bone tree
     */
    cocos2d::Vector<BoneNode*> getAllSubBones() const;

    /**
     *@brief: add a skin
     *@param: display, whether display this skin
     */
    virtual void addSkin(SkinNode* skin, bool display);

    /**
     *@brief: add a skin
     *@param: display, whether display this skin
     *@param: hideOthers, whether hide other skins added to this bone
     */
    virtual void addSkin(SkinNode* skin, bool display, bool hideOthers);

    /**
     * @brief: display skin
     * @param: hideOthers, set other skins invisible
     */
    virtual void displaySkin(SkinNode* skin, bool hideOthers);

    /**
     * @brief: display all skins named skinName, if hide display only one skin,
     *         prefer to use display(SkinNode* skin, bool hideOthers = false)
     * @param: hideOthers, set other skins invisible
     */
    virtual void displaySkin(std::string_view skinName, bool hideOthers);

    // get the skins which is visible (displaying skins)
    virtual cocos2d::Vector<SkinNode*> getVisibleSkins() const;

    /**
     * get skins in this bone's children
     */
    virtual const cocos2d::Vector<SkinNode*>& getSkins() const { return _boneSkins; }
    virtual cocos2d::Vector<SkinNode*>& getSkins() { return _boneSkins; }

    /**
     * @brief: get all skins in this bone tree
     */
    cocos2d::Vector<SkinNode*> getAllSubSkins() const;

    // blendFunc
    virtual void setBlendFunc(const cocos2d::BlendFunc& blendFunc) override;
    virtual const cocos2d::BlendFunc& getBlendFunc() const override { return _blendFunc; }

    // debug draw show, bone's debugdraw can be draw when bone is visible
    // when bone's added to skeleton, DebugDrawEnabled controlled by skeleton's DebugDrawEnabled
    virtual void setDebugDrawEnabled(bool isDebugDraw);
    virtual bool isDebugDrawEnabled() const { return _isRackShow; }

    // bone's debug draw's length
    virtual void setDebugDrawLength(float length);
    virtual float getDebugDrawLength() const { return _rackLength; }

    // bone's debug draw's width
    virtual void setDebugDrawWidth(float width);
    virtual float getDebugDrawWidth() const { return _rackWidth; }

    // bone's debug draw's width
    virtual void setDebugDrawColor(const cocos2d::Color4F& color);
    virtual cocos2d::Color4F getDebugDrawColor() const { return _rackColor; }

    // get bone's bounding box, depends on getVisibleSkinsRect, apply on node to parent's transform
    cocos2d::Rect getBoundingBox() const override;

    /**
     *get displayings rect in self transform
     */
    virtual cocos2d::Rect getVisibleSkinsRect() const;

    // transform & draw
    virtual void draw(cocos2d::Renderer* renderer, const cocos2d::Mat4& transform, uint32_t flags) override;

    // set local zorder, and dirty the debugdraw to make debugdraw's render layer right
    virtual void setLocalZOrder(int localZOrder) override;

    // set name, and replace the subbone map in skeleton
    virtual void setName(std::string_view name) override;

    // set visible, and dirty the debugdraw to make debugdraw's render layer right
    virtual void setVisible(bool visible) override;

    // set contentsize, and recalculate debugdraw
    virtual void setContentSize(const cocos2d::Size& contentSize) override;

    // set localzorder, and recalculate debugdraw
    virtual void setAnchorPoint(const cocos2d::Vec2& anchorPoint) override;

#ifdef CC_STUDIO_ENABLED_VIEW
    // hit test , bonePoint is in self coordinate
    virtual bool isPointOnRack(const cocos2d::Vec2& bonePoint);
#endif

    CC_CONSTRUCTOR_ACCESS : BoneNode() = default;
    virtual ~BoneNode();
    virtual bool init() override;

protected:
    virtual void addToChildrenListHelper(Node* child);
    virtual void removeFromChildrenListHelper(Node* child);

    // add bone to children bone list, and add bone to skeleton's subbone map
    virtual void addToBoneList(BoneNode* bone);

    // remove bone from children bone list, and remove bone from skeleton's subbone map
    virtual void removeFromBoneList(BoneNode* bone);

    // add skin to skin list
    virtual void addToSkinList(SkinNode* skin);

    // remove skin from skin list
    virtual void removeFromSkinList(SkinNode* skin);

    // sort all _children ,  bone list and skin list
    virtual void sortAllChildren() override;

    virtual void updateVertices();
    virtual void updateColor() override;

    // bone's color and opacity cannot cascade to bone
    virtual void updateDisplayedColor(const cocos2d::Color3B& parentColor) override;
    virtual void updateDisplayedOpacity(uint8_t parentOpacity) override;
    virtual void disableCascadeOpacity() override;
    virtual void disableCascadeColor() override;

    // override Node::visit, just visit bones in children
    virtual void visit(cocos2d::Renderer* renderer,
                       const cocos2d::Mat4& parentTransform,
                       uint32_t parentFlags) override;

    // a help function for SkeletonNode
    // for batch bone's draw to _rootSkeleton
    virtual void batchBoneDrawToSkeleton(BoneNode* bone) const;

    // a help function for SkeletonNode
    // @param bone, visit bone's skins
    virtual void visitSkins(cocos2d::Renderer* renderer, BoneNode* bone) const;

    // a help function for SkeletonNode
    // set bone's rootSkeleton = skeleton
    void setRootSkeleton(BoneNode* bone, SkeletonNode* skeleton) const;

protected:
    cocos2d::CustomCommand _customCommand;
    cocos2d::backend::UniformLocation _mvpLocation;

    cocos2d::BlendFunc _blendFunc = cocos2d::BlendFunc::ALPHA_NON_PREMULTIPLIED;

    bool _isRackShow            = false;
    cocos2d::Color4F _rackColor = cocos2d::Color4F::WHITE;
    float _rackLength           = 50.0f;
    float _rackWidth            = 20.0f;

    cocos2d::Vector<BoneNode*> _childBones;
    cocos2d::Vector<SkinNode*> _boneSkins;
    SkeletonNode* _rootSkeleton = nullptr;

private:
    struct VertexData
    {
        cocos2d::Color4F squareColor;
        cocos2d::Vec3 noMVPVertices;
    };

    cocos2d::Vec2 _squareVertices[4];
    VertexData _vertexData[4];

    CC_DISALLOW_COPY_AND_ASSIGN(BoneNode);
};

NS_TIMELINE_END
#endif  //__CCBONENODE_H__