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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) 2011 by Bastien Montagne.
* All rights reserved.
*
* Contributor(s): None yet.
*
* ***** END GPL LICENSE BLOCK *****
*
*/
/** \file blender/modifiers/intern/MOD_weightvg_util.h
* \ingroup modifiers
*/
#ifndef __MOD_WEIGHTVG_UTIL_H__
#define __MOD_WEIGHTVG_UTIL_H__
struct CurveMapping;
struct DerivedMesh;
struct Object;
struct Tex;
struct Scene;
struct RNG;
/*
* XXX I'd like to make modified weights visible in WeightPaint mode,
* but couldn't figure a way to do this...
* Maybe this will need changes in mesh_calc_modifiers (DerivedMesh.c)?
* Or the WeightPaint mode code itself?
*/
/**************************************
* Util functions. *
**************************************/
/* We cannot divide by zero (what a surprise...).
* So if -MOD_WEIGHTVGROUP_DIVMODE_ZEROFLOOR < weightf < MOD_WEIGHTVGROUP_DIVMODE_ZEROFLOOR,
* we clamp weightf to this value (or its negative version).
* Also used to avoid null power factor.
*/
#define MOD_WVG_ZEROFLOOR 1.0e-32f
/* Maps new_w weights in place, using either one of the predefined functions, or a custom curve.
* Return values are in new_w.
* If indices is not NULL, it must be a table of same length as org_w and new_w, mapping to the real
* vertex index (in case the weight tables do not cover the whole vertices...).
* cmap might be NULL, in which case curve mapping mode will return unmodified data.
*/
void weightvg_do_map(int num, float *new_w, short mode, struct CurveMapping *cmap, struct RNG *rng);
/* Applies new_w weights to org_w ones, using either a texture, vgroup or constant value as factor.
* Return values are in org_w.
* If indices is not NULL, it must be a table of same length as org_w and new_w, mapping to the real
* vertex index (in case the weight tables do not cover the whole vertices...).
* XXX The standard "factor" value is assumed in [0.0, 1.0] range. Else, weird results might appear.
*/
void weightvg_do_mask(int num, const int *indices, float *org_w, const float *new_w, Object *ob,
DerivedMesh *dm, float fact, const char defgrp_name[MAX_VGROUP_NAME],
struct Scene *scene, Tex *texture, int tex_use_channel, int tex_mapping,
Object *tex_map_object, const char *tex_uvlayer_name);
/* Applies weights to given vgroup (defgroup), and optionally add/remove vertices from the group.
* If indices is not NULL, it must be a table of same length as weights, mapping to the real
* vertex index (in case the weight table does not cover the whole vertices...).
*/
void weightvg_update_vg(MDeformVert *dvert, int defgrp_idx, MDeformWeight **dws, int num,
const int *indices, const float *weights, const bool do_add,
const float add_thresh, const bool do_rem, const float rem_thresh);
#endif /* __MOD_WEIGHTVG_UTIL_H__ */
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