#include "CPoseAsTransforms.hpp"
#include "CCharLayoutInfo.hpp"

namespace urde {

CPoseAsTransforms::CPoseAsTransforms(u8 boneCount) : x1_count(boneCount), xd0_transformArr(new Transform[boneCount]) {}

bool CPoseAsTransforms::ContainsDataFor(const CSegId& id) const {
  const std::pair<CSegId, CSegId>& link = x8_links[id];
  return link.first.IsValid() || link.second.IsValid();
}

void CPoseAsTransforms::Clear() {
  for (u32 i = 0; i < 100; ++i)
    x8_links[i] = std::make_pair(CSegId(), CSegId());
  xd4_lastInserted = 0;
  x0_nextId = 0;
}

void CPoseAsTransforms::AccumulateScaledTransform(const CSegId& id, zeus::CMatrix3f& rotation, float scale) const {
  rotation.addScaledMatrix(GetRotation(id), scale);
}

const zeus::CTransform& CPoseAsTransforms::GetTransform(const CSegId& id) const {
  const std::pair<CSegId, CSegId>& link = x8_links[id];
  assert(link.second.IsValid());
  return xd0_transformArr[link.second].m_originToAccum;
}

const zeus::CTransform& CPoseAsTransforms::GetRestToAccumTransform(const CSegId& id) const {
  const std::pair<CSegId, CSegId>& link = x8_links[id];
  assert(link.second.IsValid());
  return xd0_transformArr[link.second].m_restPoseToAccum;
}

const zeus::CVector3f& CPoseAsTransforms::GetOffset(const CSegId& id) const {
  const std::pair<CSegId, CSegId>& link = x8_links[id];
  assert(link.second.IsValid());
  return xd0_transformArr[link.second].m_originToAccum.origin;
}

const zeus::CMatrix3f& CPoseAsTransforms::GetRotation(const CSegId& id) const {
  const std::pair<CSegId, CSegId>& link = x8_links[id];
  assert(link.second.IsValid());
  return xd0_transformArr[link.second].m_originToAccum.basis;
}

void CPoseAsTransforms::Insert(const CSegId& id, const zeus::CMatrix3f& rotation, const zeus::CVector3f& offset,
                               const zeus::CVector3f& restOffset) {
  Transform& xfOut = xd0_transformArr[x0_nextId];
  xfOut.m_originToAccum = zeus::CTransform(rotation, offset);
  xfOut.m_restPoseToAccum = xfOut.m_originToAccum * zeus::CTransform::Translate(-restOffset);

  std::pair<CSegId, CSegId>& link = x8_links[id];
  link.first = xd4_lastInserted;
  link.second = x0_nextId;
  xd4_lastInserted = id;
  ++x0_nextId;
}

} // namespace urde