axmol/cocos/editor-support/cocostudio/ActionTimeline/CCSkeletonNode.cpp

/****************************************************************************
Copyright (c) 2014 cocos2d-x.org

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THE SOFTWARE.
****************************************************************************/
#include "CCSkeletonNode.h"

#include "base/CCDirector.h"
#include "math/TransformUtils.h"
#include "renderer/CCRenderer.h"
#include "renderer/ccGLStateCache.h"
#include "renderer/CCGLProgramState.h"
#include <stack>

using namespace cocos2d;
NS_TIMELINE_BEGIN

SkeletonNode* SkeletonNode::create()
{
    SkeletonNode* skeletonNode = new (std::nothrow) SkeletonNode();
    if (skeletonNode && skeletonNode->init())
    {
        skeletonNode->autorelease();
        return skeletonNode;
    }
    CC_SAFE_DELETE(skeletonNode);
    return nullptr;
}


bool SkeletonNode::init()
{
    _rackLength = _rackWidth = 20; 
    updateVertices();
    setGLProgramState(GLProgramState::getOrCreateWithGLProgramName(GLProgram::SHADER_NAME_POSITION_COLOR_NO_MVP));
    _rootSkeleton = this;
    return true;
}

Rect SkeletonNode::getBoundingBox() const
{
    float minx, miny, maxx, maxy = 0;
    minx = miny = maxx = maxy;
    Rect boundingBox = getVisibleSkinsRect();
    bool first = true;
    if (!boundingBox.equals(Rect::ZERO))
    {
        minx = boundingBox.getMinX();
        miny = boundingBox.getMinY();
        maxx = boundingBox.getMaxX();
        maxy = boundingBox.getMaxY();
        first = false;
    }
    auto allbones = getAllSubBones();
    for (const auto& bone : allbones)
    {
        Rect r = RectApplyAffineTransform(bone->getVisibleSkinsRect(),
                                          bone->getNodeToParentAffineTransform(bone->getRootSkeletonNode()));
        if (r.equals(Rect::ZERO))
            continue;

        if (first)
        {
            minx = r.getMinX();
            miny = r.getMinY();
            maxx = r.getMaxX();
            maxy = r.getMaxY();

            first = false;
        }
        else
        {
            minx = MIN(r.getMinX(), minx);
            miny = MIN(r.getMinY(), miny);
            maxx = MAX(r.getMaxX(), maxx);
            maxy = MAX(r.getMaxY(), maxy);
        }
    }
    boundingBox.setRect(minx, miny, maxx - minx, maxy - miny);
    return RectApplyAffineTransform(boundingBox, this->getNodeToParentAffineTransform());;
}

SkeletonNode::SkeletonNode()
    : BoneNode()
{
}

SkeletonNode::~SkeletonNode()
{
}

void SkeletonNode::updateVertices()
{
    if (_rackLength != _squareVertices[6].x - _anchorPointInPoints.x || _rackWidth != _squareVertices[3].y - _anchorPointInPoints.y)
    {
        const float radiusl = _rackLength * .5f;
        const float radiusw = _rackWidth * .5f;
        const float radiusl_2 = radiusl * .25f;
        const float radiusw_2 = radiusw * .25f;
        _squareVertices[5].y = _squareVertices[2].y = _squareVertices[1].y = _squareVertices[6].y
            = _squareVertices[0].x = _squareVertices[4].x = _squareVertices[7].x = _squareVertices[3].x = .0f;
        _squareVertices[5].x = -radiusl; _squareVertices[0].y = -radiusw;
        _squareVertices[6].x =  radiusl;  _squareVertices[3].y = radiusw;
        _squareVertices[1].x =  radiusl_2; _squareVertices[7].y = radiusw_2;
        _squareVertices[2].x = - radiusl_2; _squareVertices[4].y = - radiusw_2;


        for (int i = 0; i < 8; i++)
        {
            _squareVertices[i] += _anchorPointInPoints;
        }

        _transformUpdated = _transformDirty = _inverseDirty = _contentSizeDirty = true;
    }
}

void SkeletonNode::updateColor()
{
    for (unsigned int i = 0; i < 8; i++)
    {
        _squareColors[i] = _rackColor;
    }
    _transformUpdated = _transformDirty = _inverseDirty = _contentSizeDirty = true;
}


void SkeletonNode::visit(Renderer *renderer, const Mat4& parentTransform, uint32_t parentFlags)
{
    BoneNode::visit(renderer, parentTransform, parentFlags);
    if (_visible && _isRackShow)
    {
        _customCommand.init(_globalZOrder, parentTransform, parentFlags);
        _customCommand.func = CC_CALLBACK_0(SkeletonNode::onDraw, this, parentTransform, parentFlags);
        renderer->addCommand(&_customCommand);
        for (int i = 0; i < 8; ++i)
        {
            Vec4 pos;
            pos.x = _squareVertices[i].x; pos.y = _squareVertices[i].y; pos.z = _positionZ;
            pos.w = 1;
            _modelViewTransform.transformVector(&pos);
            _noMVPVertices[i] = Vec3(pos.x, pos.y, pos.z) / pos.w;
        }

        this->draw(renderer, parentTransform, parentFlags);
        _batchBoneCommand.init(_globalZOrder, parentTransform, parentFlags);
        _batchBoneCommand.func = CC_CALLBACK_0(SkeletonNode::batchDrawAllSubBones, this, parentTransform);
        renderer->addCommand(&_batchBoneCommand);
    }
}

void SkeletonNode::batchDrawAllSubBones(const Mat4 &transform)
{
    if (_subDrawBonesDirty)
    {
        updateAllDrawBones();
    }
    if (_subDrawBonesOrderDirty)
        sortAllDrawBones();

    _batchedVeticesCount = 0;
    for (const auto& bone : _subDrawBones)
    {
        batchBoneDrawToSkeleton(bone);
    }
    Vec3* vetices = _batchedBoneVetices.data();
    Color4F* veticesColor = _batchedBoneColors.data();
    getGLProgram()->use();
    getGLProgram()->setUniformsForBuiltins(transform);

    GL::enableVertexAttribs(GL::VERTEX_ATTRIB_FLAG_POSITION | GL::VERTEX_ATTRIB_FLAG_COLOR);

#ifdef EMSCRIPTEN
    setGLBufferData(vetices, _batchedVeticesCount * sizeof(Vec3), 0);
    glVertexAttribPointer(GLProgram::VERTEX_ATTRIB_POSITION, 3, GL_FLOAT, GL_FALSE, 0, 0);

    setGLBufferData(veticesColor, _batchedVeticesCount * sizeof(Color4F), 1);
    glVertexAttribPointer(GLProgram::VERTEX_ATTRIB_COLOR, 4, GL_FLOAT, GL_FALSE, 0, 0);
#else
    glBindBuffer(GL_ARRAY_BUFFER, 0);
    glVertexAttribPointer(GLProgram::VERTEX_ATTRIB_POSITION, 3, GL_FLOAT, GL_FALSE, 0, vetices);
    glVertexAttribPointer(GLProgram::VERTEX_ATTRIB_COLOR, 4, GL_FLOAT, GL_FALSE, 0, veticesColor);
#endif // EMSCRIPTEN

    GL::blendFunc(_blendFunc.src, _blendFunc.dst);
    
#ifdef CC_STUDIO_ENABLED_VIEW
    glLineWidth(1);
    glEnable(GL_LINE_SMOOTH);
    glHint(GL_LINE_SMOOTH_HINT, GL_DONT_CARE);
    for(int i= 0; i < _batchedVeticesCount; i += 8)
    {
        glDrawArrays(GL_TRIANGLE_FAN, i, 4);
        glDrawArrays(GL_LINE_LOOP, i + 4, 4);
    }
    CC_INCREMENT_GL_DRAWN_BATCHES_AND_VERTICES(1, _batchedVeticesCount);
#else
    for (int i = 0; i < _batchedVeticesCount; i += 4)
    {
        glDrawArrays(GL_TRIANGLE_FAN, i, 4);
    }
    CC_INCREMENT_GL_DRAWN_BATCHES_AND_VERTICES(1, _batchedVeticesCount);
#endif //CC_STUDIO_ENABLED_VIEW
}


void SkeletonNode::onDraw(const Mat4 &transform, uint32_t flags)
{
    getGLProgram()->use();
    getGLProgram()->setUniformsForBuiltins(transform);

    GL::enableVertexAttribs(GL::VERTEX_ATTRIB_FLAG_POSITION | GL::VERTEX_ATTRIB_FLAG_COLOR);

    //
    // Attributes
    //
#ifdef EMSCRIPTEN
    setGLBufferData(_noMVPVertices, 8 * sizeof(Vec3), 0);
    glVertexAttribPointer(GLProgram::VERTEX_ATTRIB_POSITION, 3, GL_FLOAT, GL_FALSE, 0, 0);

    setGLBufferData(_squareColors, 8 * sizeof(Color4F), 1);
    glVertexAttribPointer(GLProgram::VERTEX_ATTRIB_COLOR, 4, GL_FLOAT, GL_FALSE, 0, 0);
#else
    glBindBuffer(GL_ARRAY_BUFFER, 0);
    glVertexAttribPointer(GLProgram::VERTEX_ATTRIB_POSITION, 3, GL_FLOAT, GL_FALSE, 0, _noMVPVertices);
    glVertexAttribPointer(GLProgram::VERTEX_ATTRIB_COLOR, 4, GL_FLOAT, GL_FALSE, 0, _squareColors);
#endif // EMSCRIPTEN

    GL::blendFunc(_blendFunc.src, _blendFunc.dst);

    glDrawArrays(GL_TRIANGLE_STRIP, 0, 4);
    glDrawArrays(GL_TRIANGLE_STRIP, 4, 4);

    CC_INCREMENT_GL_DRAWN_BATCHES_AND_VERTICES(1, 8);
}

void SkeletonNode::changeSkins(const std::map<std::string, std::string>& boneSkinNameMap)
{
    for (auto &boneskin : boneSkinNameMap)
    {
        auto bone = getBoneNode(boneskin.first);
        if ( nullptr != bone)
            bone->displaySkin(boneskin.second, true);
    }
}

void SkeletonNode::changeSkins(const std::string& skinGroupName)
{
    auto suit = _skinGroupMap.find(skinGroupName);
    if (suit != _skinGroupMap.end())
    {
        changeSkins(suit->second);
    }
}

BoneNode* SkeletonNode::getBoneNode(const std::string& boneName)
{
    auto iter = _subBonesMap.find(boneName);
    if (iter != _subBonesMap.end())
    {
        return iter->second;
    }
    return nullptr;
}

const Map<std::string, BoneNode*>& SkeletonNode::getAllSubBonesMap() const
{
    return _subBonesMap;
}

void SkeletonNode::addSkinGroup(std::string groupName, std::map<std::string, std::string> boneSkinNameMap)
{
    _skinGroupMap.insert(std::make_pair(groupName, boneSkinNameMap));
}

void SkeletonNode::updateAllDrawBones()
{
    _subDrawBones.clear();
    for (const auto& bonepair : _subBonesMap)
    {
        auto bone = bonepair.second;
        if (bone->isVisible() && bone->isDebugDrawEnabled())
            _subDrawBones.pushBack(bone);
    }
    _subDrawBonesDirty = false;
}

void SkeletonNode::sortAllDrawBones()
{
    std::sort(_subDrawBones.begin(), _subDrawBones.end(), nodeComparisonLess);
    _subDrawBonesOrderDirty = false;
}

NS_TIMELINE_END