BoneChain.h

#pragma once

namespace ParaEngine
{
    class Bone;
    struct AnimIndex;

    // find calculate the middle joint.
    // pelvis(20)->waist(21)->chest(23)->necklow(43)->neck(61) 
    //           ->but(22)
    struct CBoneChain
    {
        struct BoneItem {
            int nBoneID;
            float fWeight;
        };
        BoneItem m_boneChain[4];
        int m_nBoneCount;
    public:
        CBoneChain(int bBoneCount = 4);;
        void SetStartBone(Bone* allBones, int nStart, const int* m_boneLookup = NULL);
        void RotateBoneChain(const Vector3& vAxis, Bone* allBones, int nMaxBoneNum, float fAngle, const AnimIndex& CurrentAnim, const AnimIndex& BlendingAnim, float blendingFactor, IAttributeFields* pAnimInstance = NULL);
    };
}