skindata.h

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/*
**  Command & Conquer Generals Zero Hour(tm)
**  Copyright 2025 Electronic Arts Inc.
**
**  This program is free software: you can redistribute it and/or modify
**  it under the terms of the GNU General Public License as published by
**  the Free Software Foundation, either version 3 of the License, or
**  (at your option) any later version.
**
**  This program is distributed in the hope that it will be useful,
**  but WITHOUT ANY WARRANTY; without even the implied warranty of
**  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
**  GNU General Public License for more details.
**
**  You should have received a copy of the GNU General Public License
**  along with this program.  If not, see <http://www.gnu.org/licenses/>.
*/
 
/* $Header: /Commando/Code/Tools/max2w3d/skindata.h 6     10/28/97 6:08p Greg_h $ */
/*********************************************************************************************** 
 ***                            Confidential - Westwood Studios                              *** 
 *********************************************************************************************** 
 *                                                                                             * 
 *                 Project Name : Commando Tools - WWSkin                                      * 
 *                                                                                             * 
 *                     $Archive:: /Commando/Code/Tools/max2w3d/skindata.h                     $* 
 *                                                                                             * 
 *                      $Author:: Greg_h                                                      $* 
 *                                                                                             * 
 *                     $Modtime:: 10/21/97 2:04p                                              $* 
 *                                                                                             * 
 *                    $Revision:: 6                                                           $* 
 *                                                                                             * 
 *---------------------------------------------------------------------------------------------* 
 * Functions:                                                                                  * 
 * - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - */
 
 
#ifndef SKINDATA_H
#define SKINDATA_H
 
#include "Max.h"
#include "namedsel.h"
 
/*
** InfluenceStruct - structure which stores the bone 
** influence information for a single vertex.
*/
struct InfluenceStruct
{
    /*
    ** vertices can be influenced by up to two bones.
    */
    int     BoneIdx[2];
    float       BoneWeight[2];
 
    InfluenceStruct(void) { BoneIdx[0] = -1; BoneIdx[1] = -1; BoneWeight[0] = 1.0f; BoneWeight[1] = 0.0f; }
    
    void Set_Influence(int boneidx) {
        // TODO: make this actually let you set two bones with
        // weighting values.  Need UI to furnish this info...
        BoneIdx[0] = boneidx;
    }
};
 
 
/*
** SkinDataClass - a class which contains the bone influence data
** for the modifier.  One of these will be hung off of the 
** ModContext...
*/
class SkinDataClass : public LocalModData
{
 
public:
 
    SkinDataClass(void) { Held = FALSE; Valid = FALSE; }
 
    SkinDataClass(Mesh *mesh)
    {
        VertSel = mesh->vertSel;
        VertData.SetCount(mesh->getNumVerts());
        for (int i=0; i<VertData.Count(); i++) {
            VertData[i].BoneIdx[0] = VertData[i].BoneIdx[1] = -1;
            VertData[i].BoneWeight[0] = 1.0f;
            VertData[i].BoneWeight[1] = 0.0f;
        }
        Valid = TRUE;
        Held = FALSE;
    }
 
    void Invalidate() { Valid = FALSE; }
 
    BOOL IsValid() { return Valid; }
 
    void Validate(Mesh *mesh)
    {
        if (!Valid)
        {
            VertSel.SetSize(mesh->vertSel.GetSize(),1);
            VertData.SetCount(mesh->getNumVerts());
            Valid = TRUE;
        }
    }
 
    virtual LocalModData * Clone(void) 
    { 
        SkinDataClass * newdata = new SkinDataClass();
        newdata->VertSel = VertSel;
        newdata->VertData = VertData;
        return newdata;
    }
 
    void Add_Influence(int boneidx) 
    {
        /*
        ** Make this INode influence all currently selected vertices
        */
        for (int i=0; i<VertData.Count(); i++) {
            if (VertSel[i]) {
                VertData[i].Set_Influence(boneidx);
            }
        }
    }
 
    IOResult Save(ISave *isave);
    IOResult Load(ILoad *iload);
 
public:
 
    BOOL                            Valid;
    BOOL                            Held;
    
    /*
    ** Current selection
    */
    BitArray                        VertSel;
    
    /*
    ** Named selection sets
    */
    NamedSelSetList          VertSelSets;
 
    /*
    ** Vertex influence data
    */
    Tab<InfluenceStruct>        VertData;
 
    /*
    ** Load/Save chunk ID's
    */
    enum {
        FLAGS_CHUNK =                0x0000,
        VERT_SEL_CHUNK =          0x0010, 
        NAMED_SEL_SETS_CHUNK =  0x0020,
        INFLUENCE_DATA_CHUNK =  0x0030
    };
 
};
 
 
#endif