metaforce/Runtime/Character/CSkinRules.cpp

51 lines
1.8 KiB
C++

#include "Runtime/Character/CSkinRules.hpp"
#include "Runtime/CToken.hpp"
#include "Runtime/Character/CPoseAsTransforms.hpp"
#include "Runtime/Graphics/CModel.hpp"
namespace metaforce {
CSkinRules::CSkinRules(CInputStream& in) {
u32 bankCount = in.readUint32Big();
x0_skinBanks.reserve(bankCount);
for (u32 i = 0; i < bankCount; ++i)
x0_skinBanks.emplace_back(in);
u32 virtualBoneCount = in.readUint32Big();
m_virtualBones.reserve(virtualBoneCount);
for (u32 i = 0; i < virtualBoneCount; ++i)
m_virtualBones.emplace_back(in);
u32 poolSz = in.readUint32Big();
m_poolToSkinIdx.reserve(poolSz);
for (u32 i = 0; i < poolSz; ++i)
m_poolToSkinIdx.push_back(in.readUint32Big());
}
void CSkinRules::TransformVerticesCPU(std::vector<std::pair<zeus::CVector3f, zeus::CVector3f>>& vnOut,
const CPoseAsTransforms& pose, const CModel& model) const {
OPTICK_EVENT();
vnOut.resize(m_poolToSkinIdx.size());
for (size_t i = 0; i < m_poolToSkinIdx.size(); ++i) {
const CVirtualBone& vb = m_virtualBones[m_poolToSkinIdx[i]];
zeus::CVector3f origVertex = model.GetPoolVertex(i);
zeus::CVector3f vertex;
zeus::CVector3f origNormal = model.GetPoolNormal(i);
zeus::CVector3f normal;
for (const SSkinWeighting& w : vb.GetWeights()) {
const zeus::CTransform& xf = pose.GetRestToAccumTransform(w.m_id);
vertex += (xf * origVertex) * w.m_weight;
normal += (xf.basis.inverted().transposed() * origNormal) * w.m_weight;
}
vnOut[i] = std::make_pair(vertex, normal.normalized());
}
}
CFactoryFnReturn FSkinRulesFactory(const SObjectTag& tag, CInputStream& in, const CVParamTransfer& params,
CObjectReference* selfRef) {
return TToken<CSkinRules>::GetIObjObjectFor(std::make_unique<CSkinRules>(in));
}
} // namespace metaforce