73 lines
2.2 KiB
C++
73 lines
2.2 KiB
C++
///////////////////////////////////////////////////////////////////////////////
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//
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// Name: SkeletonAnimDef.cpp
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// Author: Rich Cross
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// Contact: rich@wildfiregames.com
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//
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///////////////////////////////////////////////////////////////////////////////
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#include "pmdexp_types.h"
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#include "SkeletonAnimDef.h"
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#include "FilePacker.h"
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///////////////////////////////////////////////////////////////////////////////////////////
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// CSkeletonAnimDef constructor
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CSkeletonAnimDef::CSkeletonAnimDef() : m_Keys(0), m_NumKeys(0), m_NumFrames(0), m_FrameTime(0)
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{
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}
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///////////////////////////////////////////////////////////////////////////////////////////
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// CSkeletonAnimDef destructor
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CSkeletonAnimDef::~CSkeletonAnimDef()
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{
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delete[] m_Keys;
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}
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///////////////////////////////////////////////////////////////////////////////////////////
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// BuildBoneMatrices: build matrices for all bones at the given time (in MS) in this
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// animation
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void CSkeletonAnimDef::BuildBoneMatrices(float time,CMatrix3D* matrices) const
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{
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float fstartframe=time/m_FrameTime;
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u32 startframe=u32(time/m_FrameTime);
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float deltatime=fstartframe-startframe;
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startframe%=m_NumFrames;
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u32 endframe=startframe+1;
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endframe%=m_NumFrames;
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u32 i;
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for (i=0;i<m_NumKeys;i++) {
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const Key& startkey=GetKey(startframe,i);
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const Key& endkey=GetKey(endframe,i);
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CVector3D trans=startkey.m_Translation*(1-deltatime)+endkey.m_Translation*deltatime;
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CQuaternion rot;
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rot.Slerp(startkey.m_Rotation,endkey.m_Rotation,deltatime);
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matrices[i].SetIdentity();
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matrices[i].Rotate(rot);
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matrices[i].Translate(trans);
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}
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}
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///////////////////////////////////////////////////////////////////////////////////////////
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// Save: try to save anim to file
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void CSkeletonAnimDef::Save(const char* filename,const CSkeletonAnimDef* anim)
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{
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CFilePacker packer;
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// pack up all the data
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packer.PackString(anim->m_Name);
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packer.PackRaw(&anim->m_FrameTime,sizeof(anim->m_FrameTime));
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packer.PackRaw(&anim->m_NumKeys,sizeof(anim->m_NumKeys));
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packer.PackRaw(&anim->m_NumFrames,sizeof(anim->m_NumFrames));
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packer.PackRaw(anim->m_Keys,anim->m_NumKeys*anim->m_NumFrames*sizeof(Key));
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// now write it
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packer.Write(filename,FILE_VERSION,"PSSA");
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}
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