BL_SkinDeformer.cpp

Go to the documentation of this file.

/*
 * $Id: BL_SkinDeformer.cpp 36523 2011-05-06 20:18:42Z blendix $
 *
 * ***** BEGIN GPL LICENSE BLOCK *****
 *
 * 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 2
 * 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, write to the Free Software Foundation,
 * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
 *
 * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
 * All rights reserved.
 *
 * The Original Code is: all of this file.
 *
 * Contributor(s): none yet.
 *
 * ***** END GPL LICENSE BLOCK *****
 */

#if defined(WIN32) && !defined(FREE_WINDOWS)
#pragma warning (disable : 4786)
#endif //WIN32

#include "BL_SkinDeformer.h"
#include "CTR_Map.h"
#include "STR_HashedString.h"
#include "RAS_IPolygonMaterial.h"
#include "RAS_MeshObject.h"

//#include "BL_ArmatureController.h"
#include "DNA_armature_types.h"
#include "DNA_action_types.h"
#include "DNA_mesh_types.h"
#include "DNA_meshdata_types.h"
#include "BLI_utildefines.h"
#include "BKE_armature.h"
#include "BKE_action.h"
#include "MT_Point3.h"

extern "C"{
        #include "BKE_lattice.h"
}
 

#include "BLI_blenlib.h"
#include "BLI_math.h"

#define __NLA_DEFNORMALS
//#undef __NLA_DEFNORMALS

BL_SkinDeformer::BL_SkinDeformer(BL_DeformableGameObject *gameobj,
                                                                struct Object *bmeshobj, 
                                                                class RAS_MeshObject *mesh,
                                                                BL_ArmatureObject* arma)
                                                        :       //
                                                        BL_MeshDeformer(gameobj, bmeshobj, mesh),
                                                        m_armobj(arma),
                                                        m_lastArmaUpdate(-1),
                                                        //m_defbase(&bmeshobj->defbase),
                                                        m_releaseobject(false),
                                                        m_poseApplied(false),
                                                        m_recalcNormal(true)
{
        copy_m4_m4(m_obmat, bmeshobj->obmat);
};

BL_SkinDeformer::BL_SkinDeformer(
        BL_DeformableGameObject *gameobj,
        struct Object *bmeshobj_old,    // Blender object that owns the new mesh
        struct Object *bmeshobj_new,    // Blender object that owns the original mesh
        class RAS_MeshObject *mesh,
        bool release_object,
        bool recalc_normal,
        BL_ArmatureObject* arma)        :       
                BL_MeshDeformer(gameobj, bmeshobj_old, mesh),
                m_armobj(arma),
                m_lastArmaUpdate(-1),
                //m_defbase(&bmeshobj_old->defbase),
                m_releaseobject(release_object),
                m_recalcNormal(recalc_normal)
        {
                // this is needed to ensure correct deformation of mesh:
                // the deformation is done with Blender's armature_deform_verts() function
                // that takes an object as parameter and not a mesh. The object matrice is used
                // in the calculation, so we must use the matrix of the original object to
                // simulate a pure replacement of the mesh.
                copy_m4_m4(m_obmat, bmeshobj_new->obmat);
        }

BL_SkinDeformer::~BL_SkinDeformer()
{
        if(m_releaseobject && m_armobj)
                m_armobj->Release();
}

void BL_SkinDeformer::Relink(CTR_Map<class CTR_HashedPtr, void*>*map)
{
        if (m_armobj) {
                void **h_obj = (*map)[m_armobj];

                if (h_obj)
                        m_armobj = (BL_ArmatureObject*)(*h_obj);
                else
                        m_armobj=NULL;
        }

        BL_MeshDeformer::Relink(map);
}

bool BL_SkinDeformer::Apply(RAS_IPolyMaterial *mat)
{
        RAS_MeshSlot::iterator it;
        RAS_MeshMaterial *mmat;
        RAS_MeshSlot *slot;
        size_t i, nmat, imat;

        // update the vertex in m_transverts
        if (!Update())
                return false;

        if (m_transverts) {
                // the vertex cache is unique to this deformer, no need to update it
                // if it wasn't updated! We must update all the materials at once
                // because we will not get here again for the other material
                nmat = m_pMeshObject->NumMaterials();
                for (imat=0; imat<nmat; imat++) {
                        mmat = m_pMeshObject->GetMeshMaterial(imat);
                        if(!mmat->m_slots[(void*)m_gameobj])
                                continue;

                        slot = *mmat->m_slots[(void*)m_gameobj];

                        // for each array
                        for(slot->begin(it); !slot->end(it); slot->next(it)) {
                                // for each vertex
                                // copy the untransformed data from the original mvert
                                for(i=it.startvertex; i<it.endvertex; i++) {
                                        RAS_TexVert& v = it.vertex[i];
                                        v.SetXYZ(m_transverts[v.getOrigIndex()]);
                                }
                        }
                }
        }
        return true;
}

RAS_Deformer *BL_SkinDeformer::GetReplica()
{
        BL_SkinDeformer *result;

        result = new BL_SkinDeformer(*this);
        /* there is m_armobj that must be fixed but we cannot do it now, it will be done in Relink */
        result->ProcessReplica();
        return result;
}

void BL_SkinDeformer::ProcessReplica()
{
        BL_MeshDeformer::ProcessReplica();
        m_lastArmaUpdate = -1;
        m_releaseobject = false;
}

//void where_is_pose (Object *ob);
//void armature_deform_verts(Object *armOb, Object *target, float (*vertexCos)[3], int numVerts, int deformflag); 
bool BL_SkinDeformer::UpdateInternal(bool shape_applied)
{
        /* See if the armature has been updated for this frame */
        if (PoseUpdated()){     
                float obmat[4][4];      // the original object matrice 

                /* XXX note: where_is_pose() (from BKE_armature.h) calculates all matrices needed to start deforming */
                /* but it requires the blender object pointer... */
                Object* par_arma = m_armobj->GetArmatureObject();

                if(!shape_applied) {
                        /* store verts locally */
                        VerifyStorage();
                
                        /* duplicate */
                        for (int v =0; v<m_bmesh->totvert; v++)
                                VECCOPY(m_transverts[v], m_bmesh->mvert[v].co);
                }

                m_armobj->ApplyPose();

                // save matrix first
                copy_m4_m4(obmat, m_objMesh->obmat);
                // set reference matrix
                copy_m4_m4(m_objMesh->obmat, m_obmat);

                armature_deform_verts( par_arma, m_objMesh, NULL, m_transverts, NULL, m_bmesh->totvert, ARM_DEF_VGROUP, NULL, NULL );
                
                // restore matrix 
                copy_m4_m4(m_objMesh->obmat, obmat);

#ifdef __NLA_DEFNORMALS
                if (m_recalcNormal)
                        RecalcNormals();
#endif

                /* Update the current frame */
                m_lastArmaUpdate=m_armobj->GetLastFrame();

                m_armobj->RestorePose();
                /* dynamic vertex, cannot use display list */
                m_bDynamic = true;
                /* indicate that the m_transverts and normals are up to date */
                return true;
        }

        return false;
}

bool BL_SkinDeformer::Update(void)
{
        return UpdateInternal(false);
}

/* XXX note: I propose to drop this function */
void BL_SkinDeformer::SetArmature(BL_ArmatureObject *armobj)
{
        // only used to set the object now
        m_armobj = armobj;
}