MOD_shapekey.c

Go to the documentation of this file.

/*
* $Id: MOD_shapekey.c 35178 2011-02-25 13:57:17Z jesterking $
*
* ***** 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) 2005 by the Blender Foundation.
* All rights reserved.
*
* Contributor(s): Daniel Dunbar
*                 Ton Roosendaal,
*                 Ben Batt,
*                 Brecht Van Lommel,
*                 Campbell Barton
*
* ***** END GPL LICENSE BLOCK *****
*
*/

#include "BLI_math.h"

#include "DNA_key_types.h"

#include "BLI_utildefines.h"


#include "BKE_cdderivedmesh.h"
#include "BKE_key.h"
#include "BKE_particle.h"

#include "MOD_modifiertypes.h"

#include "MEM_guardedalloc.h"

static void deformVerts(ModifierData *md, Object *ob,
                                                DerivedMesh *UNUSED(derivedData),
                                                float (*vertexCos)[3],
                                                int numVerts,
                                                int UNUSED(useRenderParams),
                                                int UNUSED(isFinalCalc))
{
        KeyBlock *kb= ob_get_keyblock(ob);
        float (*deformedVerts)[3];

        if(kb && kb->totelem == numVerts) {
                deformedVerts= (float(*)[3])do_ob_key(md->scene, ob);
                if(deformedVerts) {
                        memcpy(vertexCos, deformedVerts, sizeof(float)*3*numVerts);
                        MEM_freeN(deformedVerts);
                }
        }
}

static void deformMatrices(ModifierData *md, Object *ob, DerivedMesh *derivedData,
                                                   float (*vertexCos)[3], float (*defMats)[3][3], int numVerts)
{
        Key *key= ob_get_key(ob);
        KeyBlock *kb= ob_get_keyblock(ob);
        float scale[3][3];

        (void)vertexCos; /* unused */

        if(kb && kb->totelem==numVerts && kb!=key->refkey) {
                int a;

                if(ob->shapeflag & OB_SHAPE_LOCK) scale_m3_fl(scale, 1);
                else scale_m3_fl(scale, kb->curval);

                for(a=0; a<numVerts; a++)
                        copy_m3_m3(defMats[a], scale);
        }

        deformVerts(md, ob, derivedData, vertexCos, numVerts, 0, 0);
}

static void deformVertsEM(ModifierData *md, Object *ob,
                                                struct EditMesh *UNUSED(editData),
                                                DerivedMesh *derivedData,
                                                float (*vertexCos)[3],
                                                int numVerts)
{
        Key *key= ob_get_key(ob);

        if(key && key->type == KEY_RELATIVE)
                deformVerts(md, ob, derivedData, vertexCos, numVerts, 0, 0);
}

static void deformMatricesEM(ModifierData *UNUSED(md), Object *ob,
                                                struct EditMesh *UNUSED(editData),
                                                DerivedMesh *UNUSED(derivedData),
                                                float (*vertexCos)[3],
                                                float (*defMats)[3][3],
                                                int numVerts)
{
        Key *key= ob_get_key(ob);
        KeyBlock *kb= ob_get_keyblock(ob);
        float scale[3][3];

        (void)vertexCos; /* unused */

        if(kb && kb->totelem==numVerts && kb!=key->refkey) {
                int a;
                scale_m3_fl(scale, kb->curval);

                for(a=0; a<numVerts; a++)
                        copy_m3_m3(defMats[a], scale);
        }
}

ModifierTypeInfo modifierType_ShapeKey = {
        /* name */              "ShapeKey",
        /* structName */        "ShapeKeyModifierData",
        /* structSize */        sizeof(ShapeKeyModifierData),
        /* type */              eModifierTypeType_OnlyDeform,
        /* flags */             eModifierTypeFlag_AcceptsCVs
                                                        | eModifierTypeFlag_SupportsEditmode,

        /* copyData */          NULL,
        /* deformVerts */       deformVerts,
        /* deformMatrices */    deformMatrices,
        /* deformVertsEM */     deformVertsEM,
        /* deformMatricesEM */  deformMatricesEM,
        /* applyModifier */     NULL,
        /* applyModifierEM */   NULL,
        /* initData */          NULL,
        /* requiredDataMask */  NULL,
        /* freeData */          NULL,
        /* isDisabled */        NULL,
        /* updateDepgraph */    NULL,
        /* dependsOnTime */     NULL,
        /* dependsOnNormals */  NULL,
        /* foreachObjectLink */ NULL,
        /* foreachIDLink */     NULL
};