474 lines
12 KiB
C
474 lines
12 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) 2005 by the Blender Foundation.
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* All rights reserved.
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*
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* Contributor(s): Daniel Dunbar
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* Ton Roosendaal,
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* Ben Batt,
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* Brecht Van Lommel,
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* Campbell Barton
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*
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* ***** END GPL LICENSE BLOCK *****
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*
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*/
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/** \file blender/modifiers/intern/MOD_wave.c
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* \ingroup modifiers
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*/
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#include "BLI_math.h"
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#include "DNA_meshdata_types.h"
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#include "DNA_scene_types.h"
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#include "DNA_object_types.h"
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#include "BLI_utildefines.h"
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#include "BKE_DerivedMesh.h"
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#include "BKE_object.h"
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#include "BKE_deform.h"
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#include "BKE_scene.h"
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#include "depsgraph_private.h"
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#include "MEM_guardedalloc.h"
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#include "RE_shader_ext.h"
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#include "MOD_modifiertypes.h"
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#include "MOD_util.h"
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static void initData(ModifierData *md)
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{
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WaveModifierData *wmd = (WaveModifierData*) md; // whadya know, moved here from Iraq
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wmd->flag |= (MOD_WAVE_X | MOD_WAVE_Y | MOD_WAVE_CYCL
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| MOD_WAVE_NORM_X | MOD_WAVE_NORM_Y | MOD_WAVE_NORM_Z);
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wmd->objectcenter = NULL;
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wmd->texture = NULL;
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wmd->map_object = NULL;
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wmd->height= 0.5f;
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wmd->width= 1.5f;
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wmd->speed= 0.25f;
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wmd->narrow= 1.5f;
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wmd->lifetime= 0.0f;
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wmd->damp= 10.0f;
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wmd->falloff= 0.0f;
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wmd->texmapping = MOD_WAV_MAP_LOCAL;
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wmd->defgrp_name[0] = 0;
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}
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static void copyData(ModifierData *md, ModifierData *target)
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{
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WaveModifierData *wmd = (WaveModifierData*) md;
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WaveModifierData *twmd = (WaveModifierData*) target;
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twmd->damp = wmd->damp;
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twmd->flag = wmd->flag;
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twmd->height = wmd->height;
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twmd->lifetime = wmd->lifetime;
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twmd->narrow = wmd->narrow;
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twmd->speed = wmd->speed;
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twmd->startx = wmd->startx;
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twmd->starty = wmd->starty;
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twmd->timeoffs = wmd->timeoffs;
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twmd->width = wmd->width;
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twmd->falloff = wmd->falloff;
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twmd->objectcenter = wmd->objectcenter;
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twmd->texture = wmd->texture;
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twmd->map_object = wmd->map_object;
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twmd->texmapping = wmd->texmapping;
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strncpy(twmd->defgrp_name, wmd->defgrp_name, 32);
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}
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static int dependsOnTime(ModifierData *UNUSED(md))
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{
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return 1;
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}
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static void foreachObjectLink(
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ModifierData *md, Object *ob,
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ObjectWalkFunc walk, void *userData)
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{
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WaveModifierData *wmd = (WaveModifierData*) md;
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walk(userData, ob, &wmd->objectcenter);
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walk(userData, ob, &wmd->map_object);
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}
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static void foreachIDLink(ModifierData *md, Object *ob,
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IDWalkFunc walk, void *userData)
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{
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WaveModifierData *wmd = (WaveModifierData*) md;
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walk(userData, ob, (ID **)&wmd->texture);
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foreachObjectLink(md, ob, (ObjectWalkFunc)walk, userData);
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}
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static void updateDepgraph(ModifierData *md, DagForest *forest,
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Scene *UNUSED(scene),
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Object *UNUSED(ob),
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DagNode *obNode)
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{
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WaveModifierData *wmd = (WaveModifierData*) md;
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if(wmd->objectcenter) {
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DagNode *curNode = dag_get_node(forest, wmd->objectcenter);
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dag_add_relation(forest, curNode, obNode, DAG_RL_OB_DATA,
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"Wave Modifier");
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}
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if(wmd->map_object) {
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DagNode *curNode = dag_get_node(forest, wmd->map_object);
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dag_add_relation(forest, curNode, obNode, DAG_RL_OB_DATA,
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"Wave Modifer");
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}
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}
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static CustomDataMask requiredDataMask(Object *UNUSED(ob), ModifierData *md)
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{
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WaveModifierData *wmd = (WaveModifierData *)md;
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CustomDataMask dataMask = 0;
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/* ask for UV coordinates if we need them */
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if(wmd->texture && wmd->texmapping == MOD_WAV_MAP_UV)
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dataMask |= CD_MASK_MTFACE;
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/* ask for vertexgroups if we need them */
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if(wmd->defgrp_name[0])
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dataMask |= CD_MASK_MDEFORMVERT;
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return dataMask;
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}
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static void wavemod_get_texture_coords(WaveModifierData *wmd, Object *ob,
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DerivedMesh *dm,
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float (*co)[3], float (*texco)[3],
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int numVerts)
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{
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int i;
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int texmapping = wmd->texmapping;
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if(texmapping == MOD_WAV_MAP_OBJECT) {
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if(wmd->map_object)
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invert_m4_m4(wmd->map_object->imat, wmd->map_object->obmat);
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else /* if there is no map object, default to local */
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texmapping = MOD_WAV_MAP_LOCAL;
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}
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/* UVs need special handling, since they come from faces */
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if(texmapping == MOD_WAV_MAP_UV) {
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if(CustomData_has_layer(&dm->faceData, CD_MTFACE)) {
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MFace *mface = dm->getTessFaceArray(dm);
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MFace *mf;
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char *done = MEM_callocN(sizeof(*done) * numVerts,
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"get_texture_coords done");
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int numFaces = dm->getNumTessFaces(dm);
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char uvname[32];
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MTFace *tf;
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validate_layer_name(&dm->faceData, CD_MTFACE, wmd->uvlayer_name, uvname);
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tf = CustomData_get_layer_named(&dm->faceData, CD_MTFACE, uvname);
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/* verts are given the UV from the first face that uses them */
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for(i = 0, mf = mface; i < numFaces; ++i, ++mf, ++tf) {
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if(!done[mf->v1]) {
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texco[mf->v1][0] = tf->uv[0][0];
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texco[mf->v1][1] = tf->uv[0][1];
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texco[mf->v1][2] = 0;
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done[mf->v1] = 1;
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}
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if(!done[mf->v2]) {
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texco[mf->v2][0] = tf->uv[1][0];
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texco[mf->v2][1] = tf->uv[1][1];
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texco[mf->v2][2] = 0;
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done[mf->v2] = 1;
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}
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if(!done[mf->v3]) {
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texco[mf->v3][0] = tf->uv[2][0];
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texco[mf->v3][1] = tf->uv[2][1];
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texco[mf->v3][2] = 0;
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done[mf->v3] = 1;
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}
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if(!done[mf->v4]) {
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texco[mf->v4][0] = tf->uv[3][0];
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texco[mf->v4][1] = tf->uv[3][1];
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texco[mf->v4][2] = 0;
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done[mf->v4] = 1;
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}
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}
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/* remap UVs from [0, 1] to [-1, 1] */
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for(i = 0; i < numVerts; ++i) {
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texco[i][0] = texco[i][0] * 2 - 1;
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texco[i][1] = texco[i][1] * 2 - 1;
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}
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MEM_freeN(done);
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return;
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} else /* if there are no UVs, default to local */
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texmapping = MOD_WAV_MAP_LOCAL;
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}
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for(i = 0; i < numVerts; ++i, ++co, ++texco) {
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switch(texmapping) {
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case MOD_WAV_MAP_LOCAL:
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copy_v3_v3(*texco, *co);
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break;
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case MOD_WAV_MAP_GLOBAL:
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mul_v3_m4v3(*texco, ob->obmat, *co);
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break;
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case MOD_WAV_MAP_OBJECT:
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mul_v3_m4v3(*texco, ob->obmat, *co);
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mul_m4_v3(wmd->map_object->imat, *texco);
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break;
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}
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}
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}
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static void waveModifier_do(WaveModifierData *md,
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Scene *scene, Object *ob, DerivedMesh *dm,
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float (*vertexCos)[3], int numVerts)
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{
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WaveModifierData *wmd = (WaveModifierData*) md;
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MVert *mvert = NULL;
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MDeformVert *dvert = NULL;
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int defgrp_index;
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float ctime = BKE_curframe(scene);
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float minfac =
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(float)(1.0 / exp(wmd->width * wmd->narrow * wmd->width * wmd->narrow));
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float lifefac = wmd->height;
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float (*tex_co)[3] = NULL;
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const int wmd_axis= wmd->flag & (MOD_WAVE_X|MOD_WAVE_Y);
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const float falloff= wmd->falloff;
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float falloff_fac= 1.0f; /* when falloff == 0.0f this stays at 1.0f */
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if(wmd->flag & MOD_WAVE_NORM && ob->type == OB_MESH)
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mvert = dm->getVertArray(dm);
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if(wmd->objectcenter){
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float mat[4][4];
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/* get the control object's location in local coordinates */
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invert_m4_m4(ob->imat, ob->obmat);
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mul_m4_m4m4(mat, wmd->objectcenter->obmat, ob->imat);
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wmd->startx = mat[3][0];
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wmd->starty = mat[3][1];
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}
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/* get the index of the deform group */
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defgrp_index = defgroup_name_index(ob, wmd->defgrp_name);
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if(defgrp_index >= 0){
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dvert = dm->getVertDataArray(dm, CD_MDEFORMVERT);
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}
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if(wmd->damp == 0) wmd->damp = 10.0f;
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if(wmd->lifetime != 0.0f) {
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float x = ctime - wmd->timeoffs;
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if(x > wmd->lifetime) {
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lifefac = x - wmd->lifetime;
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if(lifefac > wmd->damp) lifefac = 0.0;
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else lifefac =
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(float)(wmd->height * (1.0f - sqrtf(lifefac / wmd->damp)));
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}
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}
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if(wmd->texture) {
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tex_co = MEM_mallocN(sizeof(*tex_co) * numVerts,
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"waveModifier_do tex_co");
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wavemod_get_texture_coords(wmd, ob, dm, vertexCos, tex_co, numVerts);
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}
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if(lifefac != 0.0f) {
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/* avoid divide by zero checks within the loop */
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float falloff_inv= falloff ? 1.0f / falloff : 1.0f;
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int i;
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for(i = 0; i < numVerts; i++) {
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float *co = vertexCos[i];
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float x = co[0] - wmd->startx;
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float y = co[1] - wmd->starty;
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float amplit= 0.0f;
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float def_weight= 1.0f;
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/* get weights */
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if(dvert) {
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def_weight= defvert_find_weight(&dvert[i], defgrp_index);
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/* if this vert isn't in the vgroup, don't deform it */
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if(def_weight == 0.0f) {
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continue;
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}
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}
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switch(wmd_axis) {
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case MOD_WAVE_X|MOD_WAVE_Y:
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amplit = sqrtf(x*x + y*y);
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break;
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case MOD_WAVE_X:
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amplit = x;
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break;
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case MOD_WAVE_Y:
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amplit = y;
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break;
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}
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/* this way it makes nice circles */
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amplit -= (ctime - wmd->timeoffs) * wmd->speed;
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if(wmd->flag & MOD_WAVE_CYCL) {
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amplit = (float)fmodf(amplit - wmd->width, 2.0f * wmd->width)
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+ wmd->width;
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}
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if(falloff != 0.0f) {
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float dist = 0.0f;
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switch(wmd_axis) {
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case MOD_WAVE_X|MOD_WAVE_Y:
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dist = sqrtf(x*x + y*y);
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break;
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case MOD_WAVE_X:
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dist = fabsf(x);
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break;
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case MOD_WAVE_Y:
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dist = fabsf(y);
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break;
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}
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falloff_fac = (1.0f - (dist * falloff_inv));
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CLAMP(falloff_fac, 0.0f, 1.0f);
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}
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/* GAUSSIAN */
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if((falloff_fac != 0.0f) && (amplit > -wmd->width) && (amplit < wmd->width)) {
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amplit = amplit * wmd->narrow;
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amplit = (float)(1.0f / expf(amplit * amplit) - minfac);
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/*apply texture*/
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if(wmd->texture) {
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TexResult texres;
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texres.nor = NULL;
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get_texture_value(wmd->texture, tex_co[i], &texres);
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amplit *= texres.tin;
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}
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/*apply weight & falloff */
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amplit *= def_weight * falloff_fac;
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if(mvert) {
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/* move along normals */
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if(wmd->flag & MOD_WAVE_NORM_X) {
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co[0] += (lifefac * amplit) * mvert[i].no[0] / 32767.0f;
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}
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if(wmd->flag & MOD_WAVE_NORM_Y) {
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co[1] += (lifefac * amplit) * mvert[i].no[1] / 32767.0f;
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}
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if(wmd->flag & MOD_WAVE_NORM_Z) {
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co[2] += (lifefac * amplit) * mvert[i].no[2] / 32767.0f;
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}
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}
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else {
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/* move along local z axis */
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co[2] += lifefac * amplit;
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}
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}
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}
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}
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if(wmd->texture) MEM_freeN(tex_co);
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}
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static void deformVerts(ModifierData *md, Object *ob,
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DerivedMesh *derivedData,
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float (*vertexCos)[3],
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int numVerts,
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int UNUSED(useRenderParams),
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int UNUSED(isFinalCalc))
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{
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DerivedMesh *dm= derivedData;
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WaveModifierData *wmd = (WaveModifierData *)md;
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if(wmd->flag & MOD_WAVE_NORM)
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dm= get_cddm(ob, NULL, dm, vertexCos);
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else if(wmd->texture || wmd->defgrp_name[0])
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dm= get_dm(ob, NULL, dm, NULL, 0);
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waveModifier_do(wmd, md->scene, ob, dm, vertexCos, numVerts);
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if(dm != derivedData)
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dm->release(dm);
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}
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static void deformVertsEM(
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ModifierData *md, Object *ob, struct BMEditMesh *editData,
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DerivedMesh *derivedData, float (*vertexCos)[3], int numVerts)
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{
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DerivedMesh *dm= derivedData;
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WaveModifierData *wmd = (WaveModifierData *)md;
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if(wmd->flag & MOD_WAVE_NORM)
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dm= get_cddm(ob, editData, dm, vertexCos);
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else if(wmd->texture || wmd->defgrp_name[0])
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dm= get_dm(ob, editData, dm, NULL, 0);
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waveModifier_do(wmd, md->scene, ob, dm, vertexCos, numVerts);
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if(dm != derivedData)
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dm->release(dm);
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}
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ModifierTypeInfo modifierType_Wave = {
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/* name */ "Wave",
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/* structName */ "WaveModifierData",
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/* structSize */ sizeof(WaveModifierData),
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/* type */ eModifierTypeType_OnlyDeform,
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/* flags */ eModifierTypeFlag_AcceptsCVs
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| eModifierTypeFlag_SupportsEditmode,
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/* copyData */ copyData,
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/* deformVerts */ deformVerts,
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/* deformMatrices */ NULL,
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/* deformVertsEM */ deformVertsEM,
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/* deformMatricesEM */ NULL,
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/* applyModifier */ NULL,
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/* applyModifierEM */ NULL,
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/* initData */ initData,
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/* requiredDataMask */ requiredDataMask,
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/* freeData */ NULL,
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/* isDisabled */ NULL,
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/* updateDepgraph */ updateDepgraph,
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/* dependsOnTime */ dependsOnTime,
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/* dependsOnNormals */ NULL,
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/* foreachObjectLink */ foreachObjectLink,
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/* foreachIDLink */ foreachIDLink,
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};
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