MOD_bevel.c

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/*
 * ***** 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 "MEM_guardedalloc.h"

#include "BLI_utildefines.h"
#include "BLI_string.h"

#include "BKE_bmesh.h"
#include "BKE_cdderivedmesh.h"
#include "BKE_modifier.h"
#include "BKE_particle.h"

#include "MOD_util.h"


static void initData(ModifierData *md)
{
    BevelModifierData *bmd = (BevelModifierData*) md;

    bmd->value = 0.1f;
    bmd->res = 1;
    bmd->flags = 0;
    bmd->val_flags = 0;
    bmd->lim_flags = 0;
    bmd->e_flags = 0;
    bmd->bevel_angle = 30;
    bmd->defgrp_name[0] = '\0';
}

static void copyData(ModifierData *md, ModifierData *target)
{
    BevelModifierData *bmd = (BevelModifierData*) md;
    BevelModifierData *tbmd = (BevelModifierData*) target;

    tbmd->value = bmd->value;
    tbmd->res = bmd->res;
    tbmd->flags = bmd->flags;
    tbmd->val_flags = bmd->val_flags;
    tbmd->lim_flags = bmd->lim_flags;
    tbmd->e_flags = bmd->e_flags;
    tbmd->bevel_angle = bmd->bevel_angle;
    BLI_strncpy(tbmd->defgrp_name, bmd->defgrp_name, sizeof(tbmd->defgrp_name));
}

static CustomDataMask requiredDataMask(Object *UNUSED(ob), ModifierData *md)
{
    BevelModifierData *bmd = (BevelModifierData *)md;
    CustomDataMask dataMask = 0;

    /* ask for vertexgroups if we need them */
    if(bmd->defgrp_name[0]) dataMask |= CD_MASK_MDEFORMVERT;

    return dataMask;
}

static DerivedMesh *applyModifier(ModifierData *md, Object *UNUSED(ob),
                        DerivedMesh *derivedData,
                        int UNUSED(useRenderParams),
                        int UNUSED(isFinalCalc))
{
    DerivedMesh *result;
    BME_Mesh *bm;

    /*bDeformGroup *def;*/
    int /*i,*/ options, defgrp_index = -1;
    BevelModifierData *bmd = (BevelModifierData*) md;

    options = bmd->flags|bmd->val_flags|bmd->lim_flags|bmd->e_flags;

    /*if ((options & BME_BEVEL_VWEIGHT) && bmd->defgrp_name[0]) {
        defgrp_index = defgroup_name_index(ob, bmd->defgrp_name);
        if (defgrp_index < 0) {
            options &= ~BME_BEVEL_VWEIGHT;
        }
    }*/

    bm = BME_derivedmesh_to_bmesh(derivedData);
    BME_bevel(bm,bmd->value,bmd->res,options,defgrp_index,bmd->bevel_angle,NULL);
    result = BME_bmesh_to_derivedmesh(bm,derivedData);
    BME_free_mesh(bm);

    CDDM_calc_normals(result);

    return result;
}

static DerivedMesh *applyModifierEM(ModifierData *md, Object *ob,
                        EditMesh *UNUSED(editData),
                        DerivedMesh *derivedData)
{
    return applyModifier(md, ob, derivedData, 0, 1);
}


ModifierTypeInfo modifierType_Bevel = {
    /* name */              "Bevel",
    /* structName */        "BevelModifierData",
    /* structSize */        sizeof(BevelModifierData),
    /* type */              eModifierTypeType_Constructive,
    /* flags */             eModifierTypeFlag_AcceptsMesh
                            | eModifierTypeFlag_SupportsEditmode
                            | eModifierTypeFlag_EnableInEditmode,

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