void RenderTerrainNode::loadData()
{
if (!isLeaf())
{
for (int i = 0; i < 4; ++i)
{
m_children[i]->loadData();
}
}
else
{
createRenderData();
setMaterialInstance(m_terrain->getMaterialInstance());
}
}
void MD5Model::loadMesh(const char *filename) {
// sanity check
if (!filename)
throw Exception("MD5Model::loadMesh(): filename is NULL");
// attempt to open file for reading
std::ifstream fin(filename, std::ifstream::in);
// was open successful?
if (!fin.is_open()) {
std::string msg = std::string("MD5Model::loadMesh(): unable to open ") +
std::string(filename) + std::string(" for reading");
throw Exception(msg);
}
// read in file version
std::string str;
getNextToken(fin, &str);
// token must read "MD5Version"
if (str != "MD5Version")
throw Exception("MD5Model::loadMesh(): expected 'MD5Version'");
// get version #
int ver = readInt(fin);
// must be version 10
if (ver != 10)
throw Exception("MD5Model::loadMesh(): MD5Version must be 10");
// clear any data before reading file
clear();
// read in all of the MD5Model elements
readElements(fin);
// close input file (should be done destructor anyway...)
fin.close();
// calculate vertex positions and normals from information in joints
// 模型pose姿势中，多个骨骼节点初始位置+连续weight位置变换（骨骼节点开始的位置 + weightPos经过joint四元数旋转的位置）* 权重 的结果作为顶点的位置。
buildVerts();
// 直接叉乘，规范化，将单位面法向量作为每个顶点的法向量
buildNormals();
createRenderData();
}
