/*
* $Id$
*
* ***** 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 "stddef.h"

#include "DNA_scene_types.h"
#include "DNA_object_types.h"

#include "BKE_cdderivedmesh.h"
#include "BKE_scene.h"
#include "BKE_subsurf.h"

#include "MOD_modifiertypes.h"

#include "CCGSubSurf.h"

static void initData(ModifierData *md)
{
	SubsurfModifierData *smd = (SubsurfModifierData*) md;

	smd->levels = 1;
	smd->renderLevels = 2;
	smd->flags |= eSubsurfModifierFlag_SubsurfUv;
}

static void copyData(ModifierData *md, ModifierData *target)
{
	SubsurfModifierData *smd = (SubsurfModifierData*) md;
	SubsurfModifierData *tsmd = (SubsurfModifierData*) target;

	tsmd->flags = smd->flags;
	tsmd->levels = smd->levels;
	tsmd->renderLevels = smd->renderLevels;
	tsmd->subdivType = smd->subdivType;
}

static void freeData(ModifierData *md)
{
	SubsurfModifierData *smd = (SubsurfModifierData*) md;

	if(smd->mCache) {
		ccgSubSurf_free(smd->mCache);
	}
	if(smd->emCache) {
		ccgSubSurf_free(smd->emCache);
	}
}

static int isDisabled(ModifierData *md, int useRenderParams)
{
	SubsurfModifierData *smd = (SubsurfModifierData*) md;
	int levels= (useRenderParams)? smd->renderLevels: smd->levels;

	return get_render_subsurf_level(&md->scene->r, levels) == 0;
}

static DerivedMesh *applyModifier(
		ModifierData *md, Object *ob, DerivedMesh *derivedData,
  int useRenderParams, int isFinalCalc)
{
	SubsurfModifierData *smd = (SubsurfModifierData*) md;
	DerivedMesh *result;

	result = subsurf_make_derived_from_derived(derivedData, smd,
			useRenderParams, NULL, isFinalCalc, 0);
	
	if(useRenderParams || !isFinalCalc) {
		DerivedMesh *cddm= CDDM_copy(result);
		result->release(result);
		result= cddm;
	}

	return result;
}

static DerivedMesh *applyModifierEM(
		ModifierData *md, Object *ob, struct EditMesh *editData,
  DerivedMesh *derivedData)
{
	SubsurfModifierData *smd = (SubsurfModifierData*) md;
	DerivedMesh *result;

	result = subsurf_make_derived_from_derived(derivedData, smd, 0,
			NULL, 0, 1);

	return result;
}


ModifierTypeInfo modifierType_Subsurf = {
	/* name */              "Subsurf",
	/* structName */        "SubsurfModifierData",
	/* structSize */        sizeof(SubsurfModifierData),
	/* type */              eModifierTypeType_Constructive,
	/* flags */             eModifierTypeFlag_AcceptsMesh
							| eModifierTypeFlag_SupportsMapping
							| eModifierTypeFlag_SupportsEditmode
							| eModifierTypeFlag_EnableInEditmode
							| eModifierTypeFlag_AcceptsCVs,

	/* copyData */          copyData,
	/* deformVerts */       0,
	/* deformVertsEM */     0,
	/* deformMatricesEM */  0,
	/* applyModifier */     applyModifier,
	/* applyModifierEM */   applyModifierEM,
	/* initData */          initData,
	/* requiredDataMask */  0,
	/* freeData */          freeData,
	/* isDisabled */        isDisabled,
	/* updateDepgraph */    0,
	/* dependsOnTime */     0,
	/* foreachObjectLink */ 0,
	/* foreachIDLink */     0,
};