axmol/extensions/cocostudio/Skin.cpp

/****************************************************************************
Copyright (c) 2013-2017 Chukong Technologies Inc.
Copyright (c) 2021 Bytedance Inc.

https://axmolengine.github.io/

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

#include "2d/SpriteFrame.h"
#include "2d/SpriteFrameCache.h"
#include "base/Director.h"
#include "renderer/Renderer.h"

#include "Skin.h"
#include "TransformHelp.h"
#include "Armature.h"

USING_NS_AX;

namespace cocostudio
{

#if AX_SPRITEBATCHNODE_RENDER_SUBPIXEL
#    define RENDER_IN_SUBPIXEL
#else
#    define RENDER_IN_SUBPIXEL(__ARGS__) (ceil(__ARGS__))
#endif

Skin* Skin::create()
{
    Skin* skin = new Skin();
    if (skin->init())
    {
        skin->autorelease();
        return skin;
    }
    AX_SAFE_DELETE(skin);
    return nullptr;
}

Skin* Skin::createWithSpriteFrameName(std::string_view pszSpriteFrameName)
{
    Skin* skin = new Skin();
    if (skin->initWithSpriteFrameName(pszSpriteFrameName))
    {
        skin->autorelease();
        return skin;
    }
    AX_SAFE_DELETE(skin);
    return nullptr;
}

Skin* Skin::create(std::string_view pszFileName)
{
    Skin* skin = new Skin();
    if (skin->initWithFile(pszFileName))
    {
        skin->autorelease();
        return skin;
    }
    AX_SAFE_DELETE(skin);
    return nullptr;
}

Skin::Skin() : _bone(nullptr), _armature(nullptr), _displayName(), _skinTransform(Mat4::IDENTITY) {}

bool Skin::initWithSpriteFrameName(std::string_view spriteFrameName)
{
    CCAssert(spriteFrameName != "", "");

    SpriteFrame* pFrame = SpriteFrameCache::getInstance()->findFrame(spriteFrameName);
    bool ret            = true;

    if (pFrame != nullptr)
    {
        ret = initWithSpriteFrame(pFrame);
    }
    else
    {
        AXLOG("Can't find CCSpriteFrame with %s. Please check your .plist file", spriteFrameName.data());
        ret = false;
    }

    _displayName = spriteFrameName;

    return ret;
}

bool Skin::initWithFile(std::string_view filename)
{
    bool ret = Sprite::initWithFile(filename);

    _displayName = filename;

    return ret;
}

void Skin::setSkinData(const BaseData& var)
{
    _skinData = var;

    setScaleX(_skinData.scaleX);
    setScaleY(_skinData.scaleY);
    setRotationSkewX(AX_RADIANS_TO_DEGREES(_skinData.skewX));
    setRotationSkewY(AX_RADIANS_TO_DEGREES(-_skinData.skewY));
    setPosition(_skinData.x, _skinData.y);

    _skinTransform = getNodeToParentTransform();
    updateArmatureTransform();
}

const BaseData& Skin::getSkinData() const
{
    return _skinData;
}

void Skin::updateArmatureTransform()
{
    _transform = TransformConcat(_bone->getNodeToArmatureTransform(), _skinTransform);
    //    if(_armature && _armature->getBatchNode())
    //    {
    //        _transform = TransformConcat(_transform, _armature->getNodeToParentTransform());
    //    }
}

void Skin::updateTransform()
{
    // If it is not visible, or one of its ancestors is not visible, then do nothing:
    if (!_visible)
    {
        _quad.br.vertices.setZero();
        _quad.tl.vertices.setZero();
        _quad.tr.vertices.setZero();
        _quad.bl.vertices.setZero();
    }
    else
    {
        //
        // calculate the Quad based on the Affine Matrix
        //
        Mat4 transform = getNodeToParentTransform();

        Size& size = _rect.size;

        float x1 = _offsetPosition.x;
        float y1 = _offsetPosition.y;

        float x2 = x1 + size.width;
        float y2 = y1 + size.height;

        if (_flippedX)
        {
            std::swap(x1, x2);
        }
        if (_flippedY)
        {
            std::swap(y1, y2);
        }

        float x = transform.m[12];
        float y = transform.m[13];

        float cr  = transform.m[0];
        float sr  = transform.m[1];
        float cr2 = transform.m[5];
        float sr2 = -transform.m[4];
        float ax  = x1 * cr - y1 * sr2 + x;
        float ay  = x1 * sr + y1 * cr2 + y;

        float bx = x2 * cr - y1 * sr2 + x;
        float by = x2 * sr + y1 * cr2 + y;

        float cx = x2 * cr - y2 * sr2 + x;
        float cy = x2 * sr + y2 * cr2 + y;

        float dx = x1 * cr - y2 * sr2 + x;
        float dy = x1 * sr + y2 * cr2 + y;

        _quad.bl.vertices.set(RENDER_IN_SUBPIXEL(ax), RENDER_IN_SUBPIXEL(ay), _positionZ);
        _quad.br.vertices.set(RENDER_IN_SUBPIXEL(bx), RENDER_IN_SUBPIXEL(by), _positionZ);
        _quad.tl.vertices.set(RENDER_IN_SUBPIXEL(dx), RENDER_IN_SUBPIXEL(dy), _positionZ);
        _quad.tr.vertices.set(RENDER_IN_SUBPIXEL(cx), RENDER_IN_SUBPIXEL(cy), _positionZ);
    }

    // MARMALADE CHANGE: ADDED CHECK FOR nullptr, TO PERMIT SPRITES WITH NO BATCH NODE / TEXTURE ATLAS
    if (_textureAtlas)
    {
        _textureAtlas->updateQuad(&_quad, _textureAtlas->getTotalQuads());
    }
}

Mat4 Skin::getNodeToWorldTransform() const
{
    return TransformConcat(_bone->getArmature()->getNodeToWorldTransform(), _transform);
}

Mat4 Skin::getNodeToWorldTransformAR() const
{
    Mat4 displayTransform = _transform;
    Vec2 anchorPoint      = _anchorPointInPoints;

    anchorPoint = PointApplyTransform(anchorPoint, displayTransform);

    displayTransform.m[12] = anchorPoint.x;
    displayTransform.m[13] = anchorPoint.y;

    return TransformConcat(_bone->getArmature()->getNodeToWorldTransform(), displayTransform);
}

void Skin::draw(Renderer* renderer, const Mat4& /*transform*/, uint32_t flags)
{
    auto mv = Director::getInstance()->getMatrix(MATRIX_STACK_TYPE::MATRIX_STACK_MODELVIEW);

    auto& pipelineDescriptor        = _quadCommand.getPipelineDescriptor();
    pipelineDescriptor.programState = getProgramState();

    // TODO: implement z order
    _quadCommand.init(_globalZOrder, _texture, _blendFunc, &_quad, 1, mv, flags);

    renderer->addCommand(&_quadCommand);
}

void Skin::setBone(Bone* bone)
{
    _bone = bone;
    if (Armature* armature = _bone->getArmature())
    {
        _armature = armature;
    }
}

Bone* Skin::getBone() const
{
    return _bone;
}

}  // namespace cocostudio