/*
* All or portions of this file Copyright (c) Amazon.com, Inc. or its affiliates or
* its licensors.
*
* For complete copyright and license terms please see the LICENSE at the root of this
* distribution (the "License"). All use of this software is governed by the License,
* or, if provided, by the license below or the license accompanying this file. Do not
* remove or modify any license notices. This file is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
*
*/
// Original file Copyright Crytek GMBH or its affiliates, used under license.

#ifndef CRYINCLUDE_CRYCOMMON_IFACEGEN_H
#define CRYINCLUDE_CRYCOMMON_IFACEGEN_H
#pragma once


struct SBoneMod
{
    Vec3 trans;
    float scale;
    int bone;
    int knot;
    int vec;
    float w;

    struct SLink
    {
        float wts[3]; // max of 3 key points to link
        int   idx[3];
        SLink()
        {
            Reset();
        }
        void Reset()
        {
            wts[0] = wts[1] = wts[2] = 0.0f;
            idx[0] = idx[1] = idx[2] = -1;
        }
    };

    SLink links[3]; // 3 coordinates
    SBoneMod()
        : w(1.0f)
        , scale(1.0f){}
};

struct IFaceGen
{
    virtual ~IFaceGen(){}
    virtual void FindNearestUVVertexShift(const Vec3& pos, const Vec2& uv, Vec3& shift) const = 0;
    virtual void CalcVertexNormals(void) = 0;
    virtual void CalcVertexPositions(void) = 0;
    virtual void ScaleAttachments() = 0;
    virtual void Drop(void) = 0;
    virtual void CalcMinZ(void) = 0;
    virtual void AutoFaceBack(void) = 0;
    virtual void FaceBack(void) = 0;
    virtual int  Load(void const*, size_t) = 0;
    virtual void Destroy() = 0;
    virtual SBoneMod* GetBoneMod(size_t index) = 0;
    virtual void SetBoneModTrans(size_t index, const Vec3& trans) = 0;
    virtual bool GetBoneModTrans(const char* name, size_t knot, size_t vec, Vec3& trans, float& scale) const = 0;
    virtual void FetchTransform(const IFaceGen* gf) = 0;
};

#endif // CRYINCLUDE_CRYCOMMON_IFACEGEN_H