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

/****************************************************************************
Copyright (c) 2015 Chukong Technologies Inc.
 
http://www.cocos2d-x.org

Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
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The above copyright notice and this permission notice shall be included in
all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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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);

    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);

    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