Campbell Barton
4ca67869cc
Opted to keep includes if they are used indirectly (even if removing is possible).
72 lines
2.1 KiB
C
72 lines
2.1 KiB
C
/*
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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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* Contributor(s): Campbell Barton
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*
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* ***** END GPL LICENSE BLOCK *****
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*/
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/** \file blender/modifiers/intern/MOD_meshcache_util.c
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* \ingroup modifiers
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*/
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#include "BLI_utildefines.h"
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#include "BLI_math.h"
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#include "DNA_modifier_types.h"
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#include "MOD_meshcache_util.h"
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void MOD_meshcache_calc_range(const float frame, const char interp,
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const int frame_tot,
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int r_index_range[2], float *r_factor)
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{
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if (interp == MOD_MESHCACHE_INTERP_NONE) {
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r_index_range[0] = r_index_range[1] = max_ii(0, min_ii(frame_tot - 1, iroundf(frame)));
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*r_factor = 1.0f; /* dummy */
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}
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else {
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const float tframe = floorf(frame);
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const float range = frame - tframe;
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r_index_range[0] = (int)tframe;
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if (range <= FRAME_SNAP_EPS) {
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/* we're close enough not to need blending */
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r_index_range[1] = r_index_range[0];
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*r_factor = 1.0f; /* dummy */
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}
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else {
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/* blend between 2 frames */
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r_index_range[1] = r_index_range[0] + 1;
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*r_factor = range;
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}
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/* clamp */
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if ((r_index_range[0] >= frame_tot) ||
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(r_index_range[1] >= frame_tot))
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{
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r_index_range[0] = r_index_range[1] = frame_tot - 1;
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*r_factor = 1.0f; /* dummy */
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}
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else if ((r_index_range[0] < 0) ||
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(r_index_range[1] < 0))
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{
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r_index_range[0] = r_index_range[1] = 0;
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*r_factor = 1.0f; /* dummy */
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}
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}
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}
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