India/cocos2d-x/cocos/3d/CCMeshVertexIndexData.cpp

/****************************************************************************
 Copyright (c) 2014-2016 Chukong Technologies Inc.
 Copyright (c) 2017-2018 Xiamen Yaji Software Co., Ltd.

 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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 all copies or substantial portions of the Software.

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#include <list>
#include <fstream>
#include <iostream>
#include <sstream>

#include "3d/CCMeshVertexIndexData.h"
#include "3d/CCObjLoader.h"
#include "3d/CCSprite3DMaterial.h"
#include "3d/CCMesh.h"
#include "3d/CCBundle3D.h"

#include "base/ccMacros.h"
#include "base/CCEventCustom.h"
#include "base/CCEventListenerCustom.h"
#include "base/CCEventDispatcher.h"
#include "base/CCEventType.h"
#include "base/CCDirector.h"
#include "renderer/ccGLStateCache.h"


using namespace std;

NS_CC_BEGIN


/////////////////////////////////////////////////////////////////////////////////////////////////////////////
MeshIndexData* MeshIndexData::create(const std::string& id, MeshVertexData* vertexData, IndexBuffer* indexbuffer, const AABB& aabb)
{
    auto meshindex = new (std::nothrow) MeshIndexData();
    
    meshindex->_id = id;
    meshindex->_indexBuffer = indexbuffer;
    meshindex->_vertexData = vertexData;
    indexbuffer->retain();
    meshindex->_aabb = aabb;
    
    meshindex->autorelease();
    return meshindex;
}

const VertexBuffer* MeshIndexData::getVertexBuffer() const
{
    return _vertexData->getVertexBuffer();
}

MeshIndexData::MeshIndexData()
: _indexBuffer(nullptr)
, _vertexData(nullptr)
, _primitiveType(GL_TRIANGLES)
{
    
}
MeshIndexData::~MeshIndexData()
{
    CC_SAFE_RELEASE(_indexBuffer);
}

MeshVertexData* MeshVertexData::create(const MeshData& meshdata)
{
    auto vertexdata = new (std::nothrow) MeshVertexData();
    int pervertexsize = meshdata.getPerVertexSize();
    vertexdata->_vertexBuffer = VertexBuffer::create(pervertexsize, (int)(meshdata.vertex.size() / (pervertexsize / 4)));
    vertexdata->_vertexData = VertexData::create();
    CC_SAFE_RETAIN(vertexdata->_vertexData);
    CC_SAFE_RETAIN(vertexdata->_vertexBuffer);
    
    int offset = 0;
    for (const auto& it : meshdata.attribs) {
        vertexdata->_vertexData->setStream(vertexdata->_vertexBuffer, VertexStreamAttribute(offset, it.vertexAttrib, it.type, it.size));
        offset += it.attribSizeBytes;
    }
    
    vertexdata->_attribs = meshdata.attribs;
    
    if(vertexdata->_vertexBuffer)
    {
        vertexdata->_vertexBuffer->updateVertices((void*)&meshdata.vertex[0], (int)meshdata.vertex.size() * 4 / vertexdata->_vertexBuffer->getSizePerVertex(), 0);
    }
    
    bool needCalcAABB = (meshdata.subMeshAABB.size() != meshdata.subMeshIndices.size());
    for (size_t i = 0, size = meshdata.subMeshIndices.size(); i < size; ++i) {

        auto& index = meshdata.subMeshIndices[i];
        auto indexBuffer = IndexBuffer::create(IndexBuffer::IndexType::INDEX_TYPE_SHORT_16, (int)(index.size()));
        indexBuffer->updateIndices(&index[0], (int)index.size(), 0);
        std::string id = (i < meshdata.subMeshIds.size() ? meshdata.subMeshIds[i] : "");
        MeshIndexData* indexdata = nullptr;
        if (needCalcAABB)
        {
            auto aabb = Bundle3D::calculateAABB(meshdata.vertex, meshdata.getPerVertexSize(), index);
            indexdata = MeshIndexData::create(id, vertexdata, indexBuffer, aabb);
        }
        else
            indexdata = MeshIndexData::create(id, vertexdata, indexBuffer, meshdata.subMeshAABB[i]);
        
        vertexdata->_indexs.pushBack(indexdata);
    }
    
    vertexdata->autorelease();
    return vertexdata;
}

MeshIndexData* MeshVertexData::getMeshIndexDataById(const std::string& id) const
{
    for (auto it : _indexs) {
        if (it->getId() == id)
            return it;
    }
    return nullptr;
}

bool MeshVertexData::hasVertexAttrib(int attrib) const
{
    for (const auto& it : _attribs) {
        if (it.vertexAttrib == attrib)
            return true;
    }
    return false;
}

MeshVertexData::MeshVertexData()
: _vertexData(nullptr)
, _vertexBuffer(nullptr)
, _vertexCount(0)
{
    
}
MeshVertexData::~MeshVertexData()
{
    CC_SAFE_RELEASE(_vertexData);
    CC_SAFE_RELEASE(_vertexBuffer);
    _indexs.clear();
}

NS_CC_END