Sergey Sharybin
991eac85ff
Sculpt data shouldn't be lost when making topology changes without quads<->tris face converison. General idea: - Go through all grid points of each corner and convert per-corner coordiante to per-face cooredinate - Apply weights and convert new point to per-corner coordinate - Use bilinear interpolation to get needed displacement vector Some additional work was necessery: - Two neighbour corners could have different displacements along common boundary. multires_mdisp_smooth_bounds() makes displacement "symmetrical" - Point could change it's corner, so displacement vector should be flipped in some way. In some cases it's not only flipping, because corner could be mapped with some rotation. It's not solved for triangular faces yet, so only z-axis displacement would be interpolated for tris. More limitations: - Interpolation will give incorrect result after quad<->triangle face conversion. - When face normal was fillped displacement would change it's direction too.
86 lines
3.0 KiB
C++
86 lines
3.0 KiB
C++
/*
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* $Id$
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*
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* ***** BEGIN GPL LICENSE BLOCK *****
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*
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* The Original Code is Copyright (C) 2007 by Nicholas Bishop
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* All rights reserved.
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*
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* The Original Code is: all of this file.
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*
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* Contributor(s): none yet.
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*
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* ***** END GPL LICENSE BLOCK *****
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*/
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#ifndef BKE_MULTIRES_H
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#define BKE_MULTIRES_H
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struct DerivedMesh;
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struct Mesh;
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struct MFace;
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struct Multires;
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struct MultiresModifierData;
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struct ModifierData;
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struct Object;
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struct Scene;
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struct MDisps;
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void multires_mark_as_modified(struct Object *ob);
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void multires_force_update(struct Object *ob);
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void multires_force_render_update(struct Object *ob);
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void multires_force_external_reload(struct Object *ob);
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void multiresModifier_set_levels_from_disps(struct MultiresModifierData *mmd, struct Object *ob);
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struct DerivedMesh *multires_dm_create_from_derived(struct MultiresModifierData*,
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int local_mmd, struct DerivedMesh*, struct Object *, int, int);
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struct MultiresModifierData *find_multires_modifier_before(struct Scene *scene,
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struct ModifierData *lastmd);
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struct DerivedMesh *get_multires_dm(struct Scene *scene, struct MultiresModifierData *mmd,
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struct Object *ob);
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void multiresModifier_del_levels(struct MultiresModifierData *, struct Object *, int direction);
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void multiresModifier_subdivide(struct MultiresModifierData *mmd, struct Object *ob,
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int updateblock, int simple);
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int multiresModifier_reshape(struct Scene *scene, struct MultiresModifierData *mmd,
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struct Object *dst, struct Object *src);
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int multiresModifier_reshapeFromDM(struct Scene *scene, struct MultiresModifierData *mmd,
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struct Object *ob, struct DerivedMesh *srcdm);
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int multiresModifier_reshapeFromDeformMod(struct Scene *scene, struct MultiresModifierData *mmd,
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struct Object *ob, struct ModifierData *md);
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void multires_stitch_grids(struct Object *);
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/* Related to the old multires */
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void multires_free(struct Multires *mr);
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void multires_load_old(struct Object *ob, struct Mesh *me);
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void multires_load_old_250(struct Mesh *);
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void multiresModifier_scale_disp(struct Scene *scene, struct Object *ob);
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void multiresModifier_prepare_join(struct Scene *scene, struct Object *ob, struct Object *to_ob);
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int multires_mdisp_corners(struct MDisps *s);
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void multires_mdisp_smooth_bounds(struct MDisps *disps);
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/* update multires data after topology changing */
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void multires_topology_changed(struct Object *ob);
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#endif
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