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da6dea5701311f41c7d70429b111b901b6bcf966
blender-archive/source/blender/blenkernel/intern/displist.c
Campbell Barton df2ed1550d Fix T74755: Cap of curve doesn't have smooth shading 
Copy the smooth setting when filling in curve caps.

For drawing this doesn't change behavior as a single normal is used
for all faces.

The difference may be noticed when converting to a mesh or with
modifiers applied.
2021-01-19 17:24:25 +11:00

1878 lines
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/*
* 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) 2001-2002 by NaN Holding BV.
* All rights reserved.
*/
/** \file
* \ingroup bke
*/
#include <math.h>
#include <stdio.h>
#include <string.h>
#include "MEM_guardedalloc.h"
#include "DNA_curve_types.h"
#include "DNA_mesh_types.h"
#include "DNA_object_types.h"
#include "DNA_scene_types.h"
#include "DNA_vfont_types.h"
#include "BLI_bitmap.h"
#include "BLI_linklist.h"
#include "BLI_listbase.h"
#include "BLI_math.h"
#include "BLI_memarena.h"
#include "BLI_scanfill.h"
#include "BLI_string.h"
#include "BLI_utildefines.h"
#include "BKE_anim_path.h"
#include "BKE_curve.h"
#include "BKE_displist.h"
#include "BKE_font.h"
#include "BKE_key.h"
#include "BKE_lattice.h"
#include "BKE_lib_id.h"
#include "BKE_mball.h"
#include "BKE_mball_tessellate.h"
#include "BKE_mesh.h"
#include "BKE_modifier.h"
#include "BKE_object.h"
#include "BLI_sys_types.h" // for intptr_t support
#include "DEG_depsgraph.h"
#include "DEG_depsgraph_query.h"
static void boundbox_displist_object(Object *ob);
void BKE_displist_elem_free(DispList *dl)
{
if (dl) {
if (dl->verts) {
MEM_freeN(dl->verts);
}
if (dl->nors) {
MEM_freeN(dl->nors);
}
if (dl->index) {
MEM_freeN(dl->index);
}
if (dl->bevel_split) {
MEM_freeN(dl->bevel_split);
}
MEM_freeN(dl);
}
}
void BKE_displist_free(ListBase *lb)
{
DispList *dl;
while ((dl = BLI_pophead(lb))) {
BKE_displist_elem_free(dl);
}
}
DispList *BKE_displist_find_or_create(ListBase *lb, int type)
{
LISTBASE_FOREACH (DispList *, dl, lb) {
if (dl->type == type) {
return dl;
}
}
DispList *dl = MEM_callocN(sizeof(DispList), "find_disp");
dl->type = type;
BLI_addtail(lb, dl);
return dl;
}
DispList *BKE_displist_find(ListBase *lb, int type)
{
LISTBASE_FOREACH (DispList *, dl, lb) {
if (dl->type == type) {
return dl;
}
}
return NULL;
}
bool BKE_displist_has_faces(ListBase *lb)
{
LISTBASE_FOREACH (DispList *, dl, lb) {
if (ELEM(dl->type, DL_INDEX3, DL_INDEX4, DL_SURF)) {
return true;
}
}
return false;
}
void BKE_displist_copy(ListBase *lbn, ListBase *lb)
{
BKE_displist_free(lbn);
LISTBASE_FOREACH (const DispList *, dl, lb) {
DispList *dln = MEM_dupallocN(dl);
BLI_addtail(lbn, dln);
dln->verts = MEM_dupallocN(dl->verts);
dln->nors = MEM_dupallocN(dl->nors);
dln->index = MEM_dupallocN(dl->index);
if (dl->bevel_split) {
dln->bevel_split = MEM_dupallocN(dl->bevel_split);
}
}
}
void BKE_displist_normals_add(ListBase *lb)
{
float *vdata, *ndata, nor[3];
float *v1, *v2, *v3, *v4;
float *n1, *n2, *n3, *n4;
int a, b, p1, p2, p3, p4;
LISTBASE_FOREACH (DispList *, dl, lb) {
if (dl->type == DL_INDEX3) {
if (dl->nors == NULL) {
dl->nors = MEM_callocN(sizeof(float[3]), "dlnors");
if (dl->flag & DL_BACK_CURVE) {
dl->nors[2] = -1.0f;
}
else {
dl->nors[2] = 1.0f;
}
}
}
else if (dl->type == DL_SURF) {
if (dl->nors == NULL) {
dl->nors = MEM_callocN(sizeof(float[3]) * dl->nr * dl->parts, "dlnors");
vdata = dl->verts;
ndata = dl->nors;
for (a = 0; a < dl->parts; a++) {
if (BKE_displist_surfindex_get(dl, a, &b, &p1, &p2, &p3, &p4) == 0) {
break;
}
v1 = vdata + 3 * p1;
n1 = ndata + 3 * p1;
v2 = vdata + 3 * p2;
n2 = ndata + 3 * p2;
v3 = vdata + 3 * p3;
n3 = ndata + 3 * p3;
v4 = vdata + 3 * p4;
n4 = ndata + 3 * p4;
for (; b < dl->nr; b++) {
normal_quad_v3(nor, v1, v3, v4, v2);
add_v3_v3(n1, nor);
add_v3_v3(n2, nor);
add_v3_v3(n3, nor);
add_v3_v3(n4, nor);
v2 = v1;
v1 += 3;
v4 = v3;
v3 += 3;
n2 = n1;
n1 += 3;
n4 = n3;
n3 += 3;
}
}
a = dl->parts * dl->nr;
v1 = ndata;
while (a--) {
normalize_v3(v1);
v1 += 3;
}
}
}
}
}
void BKE_displist_count(ListBase *lb, int *totvert, int *totface, int *tottri)
{
LISTBASE_FOREACH (DispList *, dl, lb) {
int vert_tot = 0;
int face_tot = 0;
int tri_tot = 0;
bool cyclic_u = dl->flag & DL_CYCL_U;
bool cyclic_v = dl->flag & DL_CYCL_V;
switch (dl->type) {
case DL_SURF: {
int segments_u = dl->nr - (cyclic_u == false);
int segments_v = dl->parts - (cyclic_v == false);
vert_tot = dl->nr * dl->parts;
face_tot = segments_u * segments_v;
tri_tot = face_tot * 2;
break;
}
case DL_INDEX3: {
vert_tot = dl->nr;
face_tot = dl->parts;
tri_tot = face_tot;
break;
}
case DL_INDEX4: {
vert_tot = dl->nr;
face_tot = dl->parts;
tri_tot = face_tot * 2;
break;
}
case DL_POLY:
case DL_SEGM: {
vert_tot = dl->nr * dl->parts;
break;
}
}
*totvert += vert_tot;
*totface += face_tot;
*tottri += tri_tot;
}
}
bool BKE_displist_surfindex_get(DispList *dl, int a, int *b, int *p1, int *p2, int *p3, int *p4)
{
if ((dl->flag & DL_CYCL_V) == 0 && a == (dl->parts) - 1) {
return false;
}
if (dl->flag & DL_CYCL_U) {
(*p1) = dl->nr * a;
(*p2) = (*p1) + dl->nr - 1;
(*p3) = (*p1) + dl->nr;
(*p4) = (*p2) + dl->nr;
(*b) = 0;
}
else {
(*p2) = dl->nr * a;
(*p1) = (*p2) + 1;
(*p4) = (*p2) + dl->nr;
(*p3) = (*p1) + dl->nr;
(*b) = 1;
}
if ((dl->flag & DL_CYCL_V) && a == dl->parts - 1) {
(*p3) -= dl->nr * dl->parts;
(*p4) -= dl->nr * dl->parts;
}
return true;
}
/* ****************** make displists ********************* */
#ifdef __INTEL_COMPILER
/* ICC with the optimization -02 causes crashes. */
# pragma intel optimization_level 1
#endif
static void curve_to_displist(Curve *cu,
ListBase *nubase,
ListBase *dispbase,
const bool for_render)
{
DispList *dl;
BezTriple *bezt, *prevbezt;
BPoint *bp;
float *data;
int a, len, resolu;
const bool editmode = (!for_render && (cu->editnurb || cu->editfont));
LISTBASE_FOREACH (Nurb *, nu, nubase) {
if (nu->hide != 0 && editmode) {
continue;
}
if (for_render && cu->resolu_ren != 0) {
resolu = cu->resolu_ren;
}
else {
resolu = nu->resolu;
}
if (!BKE_nurb_check_valid_u(nu)) {
/* pass */
}
else if (nu->type == CU_BEZIER) {
/* count */
len = 0;
a = nu->pntsu - 1;
if (nu->flagu & CU_NURB_CYCLIC) {
a++;
}
prevbezt = nu->bezt;
bezt = prevbezt + 1;
while (a--) {
if (a == 0 && (nu->flagu & CU_NURB_CYCLIC)) {
bezt = nu->bezt;
}
if (prevbezt->h2 == HD_VECT && bezt->h1 == HD_VECT) {
len++;
}
else {
len += resolu;
}
if (a == 0 && (nu->flagu & CU_NURB_CYCLIC) == 0) {
len++;
}
prevbezt = bezt;
bezt++;
}
dl = MEM_callocN(sizeof(DispList), "makeDispListbez");
/* len+1 because of 'forward_diff_bezier' function */
dl->verts = MEM_mallocN((len + 1) * sizeof(float[3]), "dlverts");
BLI_addtail(dispbase, dl);
dl->parts = 1;
dl->nr = len;
dl->col = nu->mat_nr;
dl->charidx = nu->charidx;
data = dl->verts;
/* check that (len != 2) so we don't immediately loop back on ourselves */
if (nu->flagu & CU_NURB_CYCLIC && (dl->nr != 2)) {
dl->type = DL_POLY;
a = nu->pntsu;
}
else {
dl->type = DL_SEGM;
a = nu->pntsu - 1;
}
prevbezt = nu->bezt;
bezt = prevbezt + 1;
while (a--) {
if (a == 0 && dl->type == DL_POLY) {
bezt = nu->bezt;
}
if (prevbezt->h2 == HD_VECT && bezt->h1 == HD_VECT) {
copy_v3_v3(data, prevbezt->vec[1]);
data += 3;
}
else {
int j;
for (j = 0; j < 3; j++) {
BKE_curve_forward_diff_bezier(prevbezt->vec[1][j],
prevbezt->vec[2][j],
bezt->vec[0][j],
bezt->vec[1][j],
data + j,
resolu,
sizeof(float[3]));
}
data += 3 * resolu;
}
if (a == 0 && dl->type == DL_SEGM) {
copy_v3_v3(data, bezt->vec[1]);
}
prevbezt = bezt;
bezt++;
}
}
else if (nu->type == CU_NURBS) {
len = (resolu * SEGMENTSU(nu));
dl = MEM_callocN(sizeof(DispList), "makeDispListsurf");
dl->verts = MEM_mallocN(len * sizeof(float[3]), "dlverts");
BLI_addtail(dispbase, dl);
dl->parts = 1;
dl->nr = len;
dl->col = nu->mat_nr;
dl->charidx = nu->charidx;
data = dl->verts;
if (nu->flagu & CU_NURB_CYCLIC) {
dl->type = DL_POLY;
}
else {
dl->type = DL_SEGM;
}
BKE_nurb_makeCurve(nu, data, NULL, NULL, NULL, resolu, sizeof(float[3]));
}
else if (nu->type == CU_POLY) {
len = nu->pntsu;
dl = MEM_callocN(sizeof(DispList), "makeDispListpoly");
dl->verts = MEM_mallocN(len * sizeof(float[3]), "dlverts");
BLI_addtail(dispbase, dl);
dl->parts = 1;
dl->nr = len;
dl->col = nu->mat_nr;
dl->charidx = nu->charidx;
data = dl->verts;
if ((nu->flagu & CU_NURB_CYCLIC) && (dl->nr != 2)) {
dl->type = DL_POLY;
}
else {
dl->type = DL_SEGM;
}
a = len;
bp = nu->bp;
while (a--) {
copy_v3_v3(data, bp->vec);
bp++;
data += 3;
}
}
}
}
/**
* \param normal_proj: Optional normal that's used to project the scanfill verts into 2d coords.
* Pass this along if known since it saves time calculating the normal.
* This is also used to initialize #DispList.nors (one normal per display list).
* \param flipnormal: Flip the normal (same as passing \a normal_proj negated)
*/
void BKE_displist_fill(ListBase *dispbase,
ListBase *to,
const float normal_proj[3],
const bool flipnormal)
{
ScanFillContext sf_ctx;
ScanFillVert *sf_vert, *sf_vert_new, *sf_vert_last;
ScanFillFace *sf_tri;
MemArena *sf_arena;
DispList *dlnew = NULL;
float *f1;
int colnr = 0, charidx = 0, cont = 1, tot, a, *index, nextcol = 0;
int totvert;
const int scanfill_flag = BLI_SCANFILL_CALC_REMOVE_DOUBLES | BLI_SCANFILL_CALC_POLYS |
BLI_SCANFILL_CALC_HOLES;
if (dispbase == NULL) {
return;
}
if (BLI_listbase_is_empty(dispbase)) {
return;
}
sf_arena = BLI_memarena_new(BLI_SCANFILL_ARENA_SIZE, __func__);
while (cont) {
int dl_flag_accum = 0;
int dl_rt_accum = 0;
cont = 0;
totvert = 0;
nextcol = 0;
BLI_scanfill_begin_arena(&sf_ctx, sf_arena);
LISTBASE_FOREACH (DispList *, dl, dispbase) {
if (dl->type == DL_POLY) {
if (charidx < dl->charidx) {
cont = 1;
}
else if (charidx == dl->charidx) { /* character with needed index */
if (colnr == dl->col) {
sf_ctx.poly_nr++;
/* make editverts and edges */
f1 = dl->verts;
a = dl->nr;
sf_vert = sf_vert_new = NULL;
while (a--) {
sf_vert_last = sf_vert;
sf_vert = BLI_scanfill_vert_add(&sf_ctx, f1);
totvert++;
if (sf_vert_last == NULL) {
sf_vert_new = sf_vert;
}
else {
BLI_scanfill_edge_add(&sf_ctx, sf_vert_last, sf_vert);
}
f1 += 3;
}
if (sf_vert != NULL && sf_vert_new != NULL) {
BLI_scanfill_edge_add(&sf_ctx, sf_vert, sf_vert_new);
}
}
else if (colnr < dl->col) {
/* got poly with next material at current char */
cont = 1;
nextcol = 1;
}
}
dl_flag_accum |= dl->flag;
dl_rt_accum |= dl->rt;
}
}
/* XXX (obedit && obedit->actcol) ? (obedit->actcol - 1) : 0)) { */
if (totvert && (tot = BLI_scanfill_calc_ex(&sf_ctx, scanfill_flag, normal_proj))) {
if (tot) {
dlnew = MEM_callocN(sizeof(DispList), "filldisplist");
dlnew->type = DL_INDEX3;
dlnew->flag = (dl_flag_accum & (DL_BACK_CURVE | DL_FRONT_CURVE));
dlnew->rt = (dl_rt_accum & CU_SMOOTH);
dlnew->col = colnr;
dlnew->nr = totvert;
dlnew->parts = tot;
dlnew->index = MEM_mallocN(sizeof(int[3]) * tot, "dlindex");
dlnew->verts = MEM_mallocN(sizeof(float[3]) * totvert, "dlverts");
if (normal_proj != NULL) {
/* Use a single normal for #DL_INDEX3.
* Counter intuitively, the normal must always be the flipped projection vector. */
dlnew->nors = MEM_mallocN(sizeof(float[3]), "dlnors");
if (flipnormal) {
copy_v3_v3(dlnew->nors, normal_proj);
}
else {
negate_v3_v3(dlnew->nors, normal_proj);
}
}
/* vert data */
f1 = dlnew->verts;
totvert = 0;
for (sf_vert = sf_ctx.fillvertbase.first; sf_vert; sf_vert = sf_vert->next) {
copy_v3_v3(f1, sf_vert->co);
f1 += 3;
/* index number */
sf_vert->tmp.i = totvert;
totvert++;
}
/* index data */
index = dlnew->index;
for (sf_tri = sf_ctx.fillfacebase.first; sf_tri; sf_tri = sf_tri->next) {
index[0] = sf_tri->v1->tmp.i;
index[1] = sf_tri->v2->tmp.i;
index[2] = sf_tri->v3->tmp.i;
if (flipnormal) {
SWAP(int, index[0], index[2]);
}
index += 3;
}
}
BLI_addhead(to, dlnew);
}
BLI_scanfill_end_arena(&sf_ctx, sf_arena);
if (nextcol) {
/* stay at current char but fill polys with next material */
colnr++;
}
else {
/* switch to next char and start filling from first material */
charidx++;
colnr = 0;
}
}
BLI_memarena_free(sf_arena);
/* do not free polys, needed for wireframe display */
}
static void bevels_to_filledpoly(Curve *cu, ListBase *dispbase)
{
const float z_up[3] = {0.0f, 0.0f, -1.0f};
ListBase front, back;
float *fp, *fp1;
int a, dpoly;
BLI_listbase_clear(&front);
BLI_listbase_clear(&back);
LISTBASE_FOREACH (DispList *, dl, dispbase) {
if (dl->type == DL_SURF) {
if ((dl->flag & DL_CYCL_V) && (dl->flag & DL_CYCL_U) == 0) {
if ((cu->flag & CU_BACK) && (dl->flag & DL_BACK_CURVE)) {
DispList *dlnew = MEM_callocN(sizeof(DispList), "filldisp");
BLI_addtail(&front, dlnew);
dlnew->verts = fp1 = MEM_mallocN(sizeof(float[3]) * dl->parts, "filldisp1");
dlnew->nr = dl->parts;
dlnew->parts = 1;
dlnew->type = DL_POLY;
dlnew->flag = DL_BACK_CURVE;
dlnew->col = dl->col;
dlnew->charidx = dl->charidx;
fp = dl->verts;
dpoly = 3 * dl->nr;
a = dl->parts;
while (a--) {
copy_v3_v3(fp1, fp);
fp1 += 3;
fp += dpoly;
}
}
if ((cu->flag & CU_FRONT) && (dl->flag & DL_FRONT_CURVE)) {
DispList *dlnew = MEM_callocN(sizeof(DispList), "filldisp");
BLI_addtail(&back, dlnew);
dlnew->verts = fp1 = MEM_mallocN(sizeof(float[3]) * dl->parts, "filldisp1");
dlnew->nr = dl->parts;
dlnew->parts = 1;
dlnew->type = DL_POLY;
dlnew->flag = DL_FRONT_CURVE;
dlnew->col = dl->col;
dlnew->charidx = dl->charidx;
fp = dl->verts + 3 * (dl->nr - 1);
dpoly = 3 * dl->nr;
a = dl->parts;
while (a--) {
copy_v3_v3(fp1, fp);
fp1 += 3;
fp += dpoly;
}
}
}
}
}
BKE_displist_fill(&front, dispbase, z_up, true);
BKE_displist_fill(&back, dispbase, z_up, false);
BKE_displist_free(&front);
BKE_displist_free(&back);
BKE_displist_fill(dispbase, dispbase, z_up, false);
}
static void curve_to_filledpoly(Curve *cu, ListBase *UNUSED(nurb), ListBase *dispbase)
{
if (!CU_DO_2DFILL(cu)) {
return;
}
if (dispbase->first && ((DispList *)dispbase->first)->type == DL_SURF) {
bevels_to_filledpoly(cu, dispbase);
}
else {
const float z_up[3] = {0.0f, 0.0f, -1.0f};
BKE_displist_fill(dispbase, dispbase, z_up, false);
}
}
/* taper rules:
* - only 1 curve
* - first point left, last point right
* - based on subdivided points in original curve, not on points in taper curve (still)
*/
static float displist_calc_taper(Depsgraph *depsgraph, Scene *scene, Object *taperobj, float fac)
{
DispList *dl;
if (taperobj == NULL || taperobj->type != OB_CURVE) {
return 1.0;
}
dl = taperobj->runtime.curve_cache ? taperobj->runtime.curve_cache->disp.first : NULL;
if (dl == NULL) {
BKE_displist_make_curveTypes(depsgraph, scene, taperobj, false, false);
dl = taperobj->runtime.curve_cache->disp.first;
}
if (dl) {
float minx, dx, *fp;
int a;
/* horizontal size */
minx = dl->verts[0];
dx = dl->verts[3 * (dl->nr - 1)] - minx;
if (dx > 0.0f) {
fp = dl->verts;
for (a = 0; a < dl->nr; a++, fp += 3) {
if ((fp[0] - minx) / dx >= fac) {
/* interpolate with prev */
if (a > 0) {
float fac1 = (fp[-3] - minx) / dx;
float fac2 = (fp[0] - minx) / dx;
if (fac1 != fac2) {
return fp[1] * (fac1 - fac) / (fac1 - fac2) + fp[-2] * (fac - fac2) / (fac1 - fac2);
}
}
return fp[1];
}
}
return fp[-2]; // last y coord
}
}
return 1.0;
}
float BKE_displist_calc_taper(
Depsgraph *depsgraph, Scene *scene, Object *taperobj, int cur, int tot)
{
float fac = ((float)cur) / (float)(tot - 1);
return displist_calc_taper(depsgraph, scene, taperobj, fac);
}
void BKE_displist_make_mball(Depsgraph *depsgraph, Scene *scene, Object *ob)
{
if (!ob || ob->type != OB_MBALL) {
return;
}
if (ob == BKE_mball_basis_find(scene, ob)) {
if (ob->runtime.curve_cache) {
BKE_displist_free(&(ob->runtime.curve_cache->disp));
}
else {
ob->runtime.curve_cache = MEM_callocN(sizeof(CurveCache), "CurveCache for MBall");
}
BKE_mball_polygonize(depsgraph, scene, ob, &ob->runtime.curve_cache->disp);
BKE_mball_texspace_calc(ob);
object_deform_mball(ob, &ob->runtime.curve_cache->disp);
/* NOP for MBALLs anyway... */
boundbox_displist_object(ob);
}
}
void BKE_displist_make_mball_forRender(Depsgraph *depsgraph,
Scene *scene,
Object *ob,
ListBase *dispbase)
{
BKE_mball_polygonize(depsgraph, scene, ob, dispbase);
BKE_mball_texspace_calc(ob);
object_deform_mball(ob, dispbase);
}
static ModifierData *curve_get_tessellate_point(Scene *scene,
Object *ob,
const bool for_render,
const bool editmode)
{
VirtualModifierData virtualModifierData;
ModifierData *md = BKE_modifiers_get_virtual_modifierlist(ob, &virtualModifierData);
ModifierData *pretessellatePoint;
int required_mode;
if (for_render) {
required_mode = eModifierMode_Render;
}
else {
required_mode = eModifierMode_Realtime;
}
if (editmode) {
required_mode |= eModifierMode_Editmode;
}
pretessellatePoint = NULL;
for (; md; md = md->next) {
const ModifierTypeInfo *mti = BKE_modifier_get_info(md->type);
if (!BKE_modifier_is_enabled(scene, md, required_mode)) {
continue;
}
if (mti->type == eModifierTypeType_Constructive) {
return pretessellatePoint;
}
if (ELEM(md->type, eModifierType_Hook, eModifierType_Softbody, eModifierType_MeshDeform)) {
pretessellatePoint = md;
/* this modifiers are moving point of tessellation automatically
* (some of them even can't be applied on tessellated curve), set flag
* for information button in modifier's header
*/
md->mode |= eModifierMode_ApplyOnSpline;
}
else if (md->mode & eModifierMode_ApplyOnSpline) {
pretessellatePoint = md;
}
}
return pretessellatePoint;
}
/* Return true if any modifier was applied. */
static bool curve_calc_modifiers_pre(
Depsgraph *depsgraph, Scene *scene, Object *ob, ListBase *nurb, const bool for_render)
{
VirtualModifierData virtualModifierData;
ModifierData *md = BKE_modifiers_get_virtual_modifierlist(ob, &virtualModifierData);
ModifierData *pretessellatePoint;
Curve *cu = ob->data;
int numElems = 0, numVerts = 0;
const bool editmode = (!for_render && (cu->editnurb || cu->editfont));
ModifierApplyFlag apply_flag = 0;
float(*deformedVerts)[3] = NULL;
float *keyVerts = NULL;
int required_mode;
bool modified = false;
BKE_modifiers_clear_errors(ob);
if (editmode) {
apply_flag |= MOD_APPLY_USECACHE;
}
if (for_render) {
apply_flag |= MOD_APPLY_RENDER;
required_mode = eModifierMode_Render;
}
else {
required_mode = eModifierMode_Realtime;
}
const ModifierEvalContext mectx = {depsgraph, ob, apply_flag};
pretessellatePoint = curve_get_tessellate_point(scene, ob, for_render, editmode);
if (editmode) {
required_mode |= eModifierMode_Editmode;
}
if (!editmode) {
keyVerts = BKE_key_evaluate_object(ob, &numElems);
if (keyVerts) {
BLI_assert(BKE_keyblock_curve_element_count(nurb) == numElems);
/* split coords from key data, the latter also includes
* tilts, which is passed through in the modifier stack.
* this is also the reason curves do not use a virtual
* shape key modifier yet. */
deformedVerts = BKE_curve_nurbs_key_vert_coords_alloc(nurb, keyVerts, &numVerts);
}
}
if (pretessellatePoint) {
for (; md; md = md->next) {
const ModifierTypeInfo *mti = BKE_modifier_get_info(md->type);
if (!BKE_modifier_is_enabled(scene, md, required_mode)) {
continue;
}
if (mti->type != eModifierTypeType_OnlyDeform) {
continue;
}
if (!deformedVerts) {
deformedVerts = BKE_curve_nurbs_vert_coords_alloc(nurb, &numVerts);
}
mti->deformVerts(md, &mectx, NULL, deformedVerts, numVerts);
modified = true;
if (md == pretessellatePoint) {
break;
}
}
}
if (deformedVerts) {
BKE_curve_nurbs_vert_coords_apply(nurb, deformedVerts, false);
MEM_freeN(deformedVerts);
}
if (keyVerts) { /* these are not passed through modifier stack */
BKE_curve_nurbs_key_vert_tilts_apply(nurb, keyVerts);
}
if (keyVerts) {
MEM_freeN(keyVerts);
}
return modified;
}
static float (*displist_vert_coords_alloc(ListBase *dispbase, int *r_vert_len))[3]
{
float(*allverts)[3], *fp;
*r_vert_len = 0;
LISTBASE_FOREACH (DispList *, dl, dispbase) {
*r_vert_len += (dl->type == DL_INDEX3) ? dl->nr : dl->parts * dl->nr;
}
allverts = MEM_mallocN(sizeof(float[3]) * (*r_vert_len), "displist_vert_coords_alloc allverts");
fp = (float *)allverts;
LISTBASE_FOREACH (DispList *, dl, dispbase) {
int offs = 3 * ((dl->type == DL_INDEX3) ? dl->nr : dl->parts * dl->nr);
memcpy(fp, dl->verts, sizeof(float) * offs);
fp += offs;
}
return allverts;
}
static void displist_vert_coords_apply(ListBase *dispbase, float (*allverts)[3])
{
const float *fp;
fp = (float *)allverts;
LISTBASE_FOREACH (DispList *, dl, dispbase) {
int offs = 3 * ((dl->type == DL_INDEX3) ? dl->nr : dl->parts * dl->nr);
memcpy(dl->verts, fp, sizeof(float) * offs);
fp += offs;
}
}
static void curve_calc_modifiers_post(Depsgraph *depsgraph,
Scene *scene,
Object *ob,
ListBase *nurb,
ListBase *dispbase,
Mesh **r_final,
const bool for_render,
const bool force_mesh_conversion)
{
VirtualModifierData virtualModifierData;
ModifierData *md = BKE_modifiers_get_virtual_modifierlist(ob, &virtualModifierData);
ModifierData *pretessellatePoint;
Curve *cu = ob->data;
int required_mode = 0, totvert = 0;
const bool editmode = (!for_render && (cu->editnurb || cu->editfont));
Mesh *modified = NULL, *mesh_applied;
float(*vertCos)[3] = NULL;
int useCache = !for_render;
ModifierApplyFlag apply_flag = 0;
if (for_render) {
apply_flag |= MOD_APPLY_RENDER;
required_mode = eModifierMode_Render;
}
else {
required_mode = eModifierMode_Realtime;
}
const ModifierEvalContext mectx_deform = {
depsgraph, ob, editmode ? apply_flag | MOD_APPLY_USECACHE : apply_flag};
const ModifierEvalContext mectx_apply = {
depsgraph, ob, useCache ? apply_flag | MOD_APPLY_USECACHE : apply_flag};
pretessellatePoint = curve_get_tessellate_point(scene, ob, for_render, editmode);
if (editmode) {
required_mode |= eModifierMode_Editmode;
}
if (pretessellatePoint) {
md = pretessellatePoint->next;
}
if (r_final && *r_final) {
BKE_id_free(NULL, *r_final);
}
for (; md; md = md->next) {
const ModifierTypeInfo *mti = BKE_modifier_get_info(md->type);
if (!BKE_modifier_is_enabled(scene, md, required_mode)) {
continue;
}
/* If we need normals, no choice, have to convert to mesh now. */
bool need_normal = mti->dependsOnNormals != NULL && mti->dependsOnNormals(md);
/* XXX 2.8 : now that batch cache is stored inside the ob->data
* we need to create a Mesh for each curve that uses modifiers. */
if (modified == NULL /* && need_normal */) {
if (vertCos != NULL) {
displist_vert_coords_apply(dispbase, vertCos);
}
if (ELEM(ob->type, OB_CURVE, OB_FONT) && (cu->flag & CU_DEFORM_FILL)) {
curve_to_filledpoly(cu, nurb, dispbase);
}
modified = BKE_mesh_new_nomain_from_curve_displist(ob, dispbase);
}
if (mti->type == eModifierTypeType_OnlyDeform ||
(mti->type == eModifierTypeType_DeformOrConstruct && !modified)) {
if (modified) {
if (!vertCos) {
vertCos = BKE_mesh_vert_coords_alloc(modified, &totvert);
}
if (need_normal) {
BKE_mesh_ensure_normals(modified);
}
mti->deformVerts(md, &mectx_deform, modified, vertCos, totvert);
}
else {
if (!vertCos) {
vertCos = displist_vert_coords_alloc(dispbase, &totvert);
}
mti->deformVerts(md, &mectx_deform, NULL, vertCos, totvert);
}
}
else {
if (!r_final) {
/* makeDisplistCurveTypes could be used for beveling, where derived mesh
* is totally unnecessary, so we could stop modifiers applying
* when we found constructive modifier but derived mesh is unwanted result
*/
break;
}
if (modified) {
if (vertCos) {
Mesh *temp_mesh = (Mesh *)BKE_id_copy_ex(
NULL, &modified->id, NULL, LIB_ID_COPY_LOCALIZE);
BKE_id_free(NULL, modified);
modified = temp_mesh;
BKE_mesh_vert_coords_apply(modified, vertCos);
}
}
else {
if (vertCos) {
displist_vert_coords_apply(dispbase, vertCos);
}
if (ELEM(ob->type, OB_CURVE, OB_FONT) && (cu->flag & CU_DEFORM_FILL)) {
curve_to_filledpoly(cu, nurb, dispbase);
}
modified = BKE_mesh_new_nomain_from_curve_displist(ob, dispbase);
}
if (vertCos) {
/* Vertex coordinates were applied to necessary data, could free it */
MEM_freeN(vertCos);
vertCos = NULL;
}
if (need_normal) {
BKE_mesh_ensure_normals(modified);
}
mesh_applied = mti->modifyMesh(md, &mectx_apply, modified);
if (mesh_applied) {
/* Modifier returned a new derived mesh */
if (modified && modified != mesh_applied) { /* Modifier */
BKE_id_free(NULL, modified);
}
modified = mesh_applied;
}
}
}
if (vertCos) {
if (modified) {
Mesh *temp_mesh = (Mesh *)BKE_id_copy_ex(NULL, &modified->id, NULL, LIB_ID_COPY_LOCALIZE);
BKE_id_free(NULL, modified);
modified = temp_mesh;
BKE_mesh_vert_coords_apply(modified, vertCos);
BKE_mesh_calc_normals_mapping_simple(modified);
MEM_freeN(vertCos);
}
else {
displist_vert_coords_apply(dispbase, vertCos);
MEM_freeN(vertCos);
vertCos = NULL;
}
}
if (r_final) {
if (force_mesh_conversion && !modified) {
/* XXX 2.8 : This is a workaround for by some deeper technical debts:
* - DRW Batch cache is stored inside the ob->data.
* - Curve data is not COWed for instances that use different modifiers.
* This can causes the modifiers to be applied on all user of the same data-block
* (see T71055)
*
* The easy workaround is to force to generate a Mesh that will be used for display data
* since a Mesh output is already used for generative modifiers.
* However it does not fix problems with actual edit data still being shared.
*
* The right solution would be to COW the Curve data block at the input of the modifier
* stack just like what the mesh modifier does.
* */
modified = BKE_mesh_new_nomain_from_curve_displist(ob, dispbase);
}
if (modified) {
/* XXX2.8(Sybren): make sure the face normals are recalculated as well */
BKE_mesh_ensure_normals(modified);
/* Special tweaks, needed since neither BKE_mesh_new_nomain_from_template() nor
* BKE_mesh_new_nomain_from_curve_displist() properly duplicate mat info...
*/
BLI_strncpy(modified->id.name, cu->id.name, sizeof(modified->id.name));
*((short *)modified->id.name) = ID_ME;
MEM_SAFE_FREE(modified->mat);
/* Set flag which makes it easier to see what's going on in a debugger. */
modified->id.tag |= LIB_TAG_COPIED_ON_WRITE_EVAL_RESULT;
modified->mat = MEM_dupallocN(cu->mat);
modified->totcol = cu->totcol;
(*r_final) = modified;
}
else {
(*r_final) = NULL;
}
}
else if (modified != NULL) {
/* Pretty stupid to generate that whole mesh if it's unused, yet we have to free it. */
BKE_id_free(NULL, modified);
}
}
static void displist_surf_indices(DispList *dl)
{
int a, b, p1, p2, p3, p4;
int *index;
dl->totindex = 0;
index = dl->index = MEM_mallocN(sizeof(int[4]) * (dl->parts + 1) * (dl->nr + 1),
"index array nurbs");
for (a = 0; a < dl->parts; a++) {
if (BKE_displist_surfindex_get(dl, a, &b, &p1, &p2, &p3, &p4) == 0) {
break;
}
for (; b < dl->nr; b++, index += 4) {
index[0] = p1;
index[1] = p2;
index[2] = p4;
index[3] = p3;
dl->totindex++;
p2 = p1;
p1++;
p4 = p3;
p3++;
}
}
}
void BKE_displist_make_surf(Depsgraph *depsgraph,
Scene *scene,
Object *ob,
ListBase *dispbase,
Mesh **r_final,
const bool for_render,
const bool for_orco)
{
ListBase nubase = {NULL, NULL};
Curve *cu = ob->data;
DispList *dl;
float *data;
int len;
bool force_mesh_conversion = false;
if (!for_render && cu->editnurb) {
BKE_nurbList_duplicate(&nubase, BKE_curve_editNurbs_get(cu));
}
else {
BKE_nurbList_duplicate(&nubase, &cu->nurb);
}
if (!for_orco) {
force_mesh_conversion = curve_calc_modifiers_pre(depsgraph, scene, ob, &nubase, for_render);
}
LISTBASE_FOREACH (Nurb *, nu, &nubase) {
if (!(for_render || nu->hide == 0) || !BKE_nurb_check_valid_uv(nu)) {
continue;
}
int resolu = nu->resolu, resolv = nu->resolv;
if (for_render) {
if (cu->resolu_ren) {
resolu = cu->resolu_ren;
}
if (cu->resolv_ren) {
resolv = cu->resolv_ren;
}
}
if (nu->pntsv == 1) {
len = SEGMENTSU(nu) * resolu;
dl = MEM_callocN(sizeof(DispList), "makeDispListsurf");
dl->verts = MEM_mallocN(len * sizeof(float[3]), "dlverts");
BLI_addtail(dispbase, dl);
dl->parts = 1;
dl->nr = len;
dl->col = nu->mat_nr;
dl->charidx = nu->charidx;
/* dl->rt will be used as flag for render face and */
/* CU_2D conflicts with R_NOPUNOFLIP */
dl->rt = nu->flag & ~CU_2D;
data = dl->verts;
if (nu->flagu & CU_NURB_CYCLIC) {
dl->type = DL_POLY;
}
else {
dl->type = DL_SEGM;
}
BKE_nurb_makeCurve(nu, data, NULL, NULL, NULL, resolu, sizeof(float[3]));
}
else {
len = (nu->pntsu * resolu) * (nu->pntsv * resolv);
dl = MEM_callocN(sizeof(DispList), "makeDispListsurf");
dl->verts = MEM_mallocN(len * sizeof(float[3]), "dlverts");
BLI_addtail(dispbase, dl);
dl->col = nu->mat_nr;
dl->charidx = nu->charidx;
/* dl->rt will be used as flag for render face and */
/* CU_2D conflicts with R_NOPUNOFLIP */
dl->rt = nu->flag & ~CU_2D;
data = dl->verts;
dl->type = DL_SURF;
dl->parts = (nu->pntsu * resolu); /* in reverse, because makeNurbfaces works that way */
dl->nr = (nu->pntsv * resolv);
if (nu->flagv & CU_NURB_CYCLIC) {
dl->flag |= DL_CYCL_U; /* reverse too! */
}
if (nu->flagu & CU_NURB_CYCLIC) {
dl->flag |= DL_CYCL_V;
}
BKE_nurb_makeFaces(nu, data, 0, resolu, resolv);
/* gl array drawing: using indices */
displist_surf_indices(dl);
}
}
if (!for_orco) {
BKE_nurbList_duplicate(&ob->runtime.curve_cache->deformed_nurbs, &nubase);
curve_calc_modifiers_post(
depsgraph, scene, ob, &nubase, dispbase, r_final, for_render, force_mesh_conversion);
}
BKE_nurbList_free(&nubase);
}
static void rotateBevelPiece(const Curve *cu,
const BevPoint *bevp,
const BevPoint *nbevp,
const DispList *dlb,
const float bev_blend,
const float widfac,
const float radius_factor,
float **r_data)
{
float *data = *r_data;
const float *fp = dlb->verts;
for (int b = 0; b < dlb->nr; b++, fp += 3, data += 3) {
if (cu->flag & CU_3D) {
float vec[3], quat[4];
vec[0] = fp[1] + widfac;
vec[1] = fp[2];
vec[2] = 0.0;
if (nbevp == NULL) {
copy_v3_v3(data, bevp->vec);
copy_qt_qt(quat, bevp->quat);
}
else {
interp_v3_v3v3(data, bevp->vec, nbevp->vec, bev_blend);
interp_qt_qtqt(quat, bevp->quat, nbevp->quat, bev_blend);
}
mul_qt_v3(quat, vec);
data[0] += radius_factor * vec[0];
data[1] += radius_factor * vec[1];
data[2] += radius_factor * vec[2];
}
else {
float sina, cosa;
if (nbevp == NULL) {
copy_v3_v3(data, bevp->vec);
sina = bevp->sina;
cosa = bevp->cosa;
}
else {
interp_v3_v3v3(data, bevp->vec, nbevp->vec, bev_blend);
/* perhaps we need to interpolate angles instead. but the thing is
* cosa and sina are not actually sine and cosine
*/
sina = nbevp->sina * bev_blend + bevp->sina * (1.0f - bev_blend);
cosa = nbevp->cosa * bev_blend + bevp->cosa * (1.0f - bev_blend);
}
data[0] += radius_factor * (widfac + fp[1]) * sina;
data[1] += radius_factor * (widfac + fp[1]) * cosa;
data[2] += radius_factor * fp[2];
}
}
*r_data = data;
}
static void fillBevelCap(Nurb *nu, DispList *dlb, float *prev_fp, ListBase *dispbase)
{
DispList *dl;
dl = MEM_callocN(sizeof(DispList), "makeDispListbev2");
dl->verts = MEM_mallocN(sizeof(float[3]) * dlb->nr, "dlverts");
memcpy(dl->verts, prev_fp, sizeof(float[3]) * dlb->nr);
dl->type = DL_POLY;
dl->parts = 1;
dl->nr = dlb->nr;
dl->col = nu->mat_nr;
dl->charidx = nu->charidx;
/* dl->rt will be used as flag for render face and */
/* CU_2D conflicts with R_NOPUNOFLIP */
dl->rt = nu->flag & ~CU_2D;
BLI_addtail(dispbase, dl);
}
static void calc_bevfac_segment_mapping(
BevList *bl, float bevfac, float spline_length, int *r_bev, float *r_blend)
{
float normlen, normsum = 0.0f;
float *seglen = bl->seglen;
int *segbevcount = bl->segbevcount;
int bevcount = 0, nr = bl->nr;
float bev_fl = bevfac * (bl->nr - 1);
*r_bev = (int)bev_fl;
while (bevcount < nr - 1) {
normlen = *seglen / spline_length;
if (normsum + normlen > bevfac) {
bev_fl = bevcount + (bevfac - normsum) / normlen * *segbevcount;
*r_bev = (int)bev_fl;
*r_blend = bev_fl - *r_bev;
break;
}
normsum += normlen;
bevcount += *segbevcount;
segbevcount++;
seglen++;
}
}
static void calc_bevfac_spline_mapping(
BevList *bl, float bevfac, float spline_length, int *r_bev, float *r_blend)
{
const float len_target = bevfac * spline_length;
BevPoint *bevp = bl->bevpoints;
float len_next = 0.0f, len = 0.0f;
int i = 0, nr = bl->nr;
while (nr--) {
bevp++;
len_next = len + bevp->offset;
if (len_next > len_target) {
break;
}
len = len_next;
i++;
}
*r_bev = i;
*r_blend = (len_target - len) / bevp->offset;
}
static void calc_bevfac_mapping_default(
BevList *bl, int *r_start, float *r_firstblend, int *r_steps, float *r_lastblend)
{
*r_start = 0;
*r_steps = bl->nr;
*r_firstblend = 1.0f;
*r_lastblend = 1.0f;
}
static void calc_bevfac_mapping(Curve *cu,
BevList *bl,
Nurb *nu,
int *r_start,
float *r_firstblend,
int *r_steps,
float *r_lastblend)
{
float tmpf, total_length = 0.0f;
int end = 0, i;
if ((BKE_nurb_check_valid_u(nu) == false) ||
/* not essential, but skips unnecessary calculation */
(min_ff(cu->bevfac1, cu->bevfac2) == 0.0f && max_ff(cu->bevfac1, cu->bevfac2) == 1.0f)) {
calc_bevfac_mapping_default(bl, r_start, r_firstblend, r_steps, r_lastblend);
return;
}
if (ELEM(cu->bevfac1_mapping, CU_BEVFAC_MAP_SEGMENT, CU_BEVFAC_MAP_SPLINE) ||
ELEM(cu->bevfac2_mapping, CU_BEVFAC_MAP_SEGMENT, CU_BEVFAC_MAP_SPLINE)) {
for (i = 0; i < SEGMENTSU(nu); i++) {
total_length += bl->seglen[i];
}
}
switch (cu->bevfac1_mapping) {
case CU_BEVFAC_MAP_RESOLU: {
const float start_fl = cu->bevfac1 * (bl->nr - 1);
*r_start = (int)start_fl;
*r_firstblend = 1.0f - (start_fl - (*r_start));
break;
}
case CU_BEVFAC_MAP_SEGMENT: {
calc_bevfac_segment_mapping(bl, cu->bevfac1, total_length, r_start, r_firstblend);
*r_firstblend = 1.0f - *r_firstblend;
break;
}
case CU_BEVFAC_MAP_SPLINE: {
calc_bevfac_spline_mapping(bl, cu->bevfac1, total_length, r_start, r_firstblend);
*r_firstblend = 1.0f - *r_firstblend;
break;
}
}
switch (cu->bevfac2_mapping) {
case CU_BEVFAC_MAP_RESOLU: {
const float end_fl = cu->bevfac2 * (bl->nr - 1);
end = (int)end_fl;
*r_steps = 2 + end - *r_start;
*r_lastblend = end_fl - end;
break;
}
case CU_BEVFAC_MAP_SEGMENT: {
calc_bevfac_segment_mapping(bl, cu->bevfac2, total_length, &end, r_lastblend);
*r_steps = end - *r_start + 2;
break;
}
case CU_BEVFAC_MAP_SPLINE: {
calc_bevfac_spline_mapping(bl, cu->bevfac2, total_length, &end, r_lastblend);
*r_steps = end - *r_start + 2;
break;
}
}
if (end < *r_start || (end == *r_start && *r_lastblend < 1.0f - *r_firstblend)) {
SWAP(int, *r_start, end);
tmpf = *r_lastblend;
*r_lastblend = 1.0f - *r_firstblend;
*r_firstblend = 1.0f - tmpf;
*r_steps = end - *r_start + 2;
}
if (*r_start + *r_steps > bl->nr) {
*r_steps = bl->nr - *r_start;
*r_lastblend = 1.0f;
}
}
static void do_makeDispListCurveTypes(Depsgraph *depsgraph,
Scene *scene,
Object *ob,
ListBase *dispbase,
const bool for_render,
const bool for_orco,
Mesh **r_final)
{
Curve *cu = ob->data;
/* we do allow duplis... this is only displist on curve level */
if (!ELEM(ob->type, OB_SURF, OB_CURVE, OB_FONT)) {
return;
}
if (ob->type == OB_SURF) {
BKE_displist_make_surf(depsgraph, scene, ob, dispbase, r_final, for_render, for_orco);
}
else if (ELEM(ob->type, OB_CURVE, OB_FONT)) {
ListBase dlbev;
ListBase nubase = {NULL, NULL};
bool force_mesh_conversion = false;
BKE_curve_bevelList_free(&ob->runtime.curve_cache->bev);
/* We only re-evaluate path if evaluation is not happening for orco.
* If the calculation happens for orco, we should never free data which
* was needed before and only not needed for orco calculation.
*/
if (!for_orco) {
if (ob->runtime.curve_cache->path) {
free_path(ob->runtime.curve_cache->path);
}
ob->runtime.curve_cache->path = NULL;
}
if (ob->type == OB_FONT) {
BKE_vfont_to_curve_nubase(ob, FO_EDIT, &nubase);
}
else {
BKE_nurbList_duplicate(&nubase, BKE_curve_nurbs_get(cu));
}
if (!for_orco) {
force_mesh_conversion = curve_calc_modifiers_pre(depsgraph, scene, ob, &nubase, for_render);
}
BKE_curve_bevelList_make(ob, &nubase, for_render);
/* If curve has no bevel will return nothing */
BKE_curve_bevel_make(ob, &dlbev);
/* no bevel or extrude, and no width correction? */
if (!dlbev.first && cu->width == 1.0f) {
curve_to_displist(cu, &nubase, dispbase, for_render);
}
else {
const float widfac = cu->width - 1.0f;
BevList *bl = ob->runtime.curve_cache->bev.first;
Nurb *nu = nubase.first;
for (; bl && nu; bl = bl->next, nu = nu->next) {
float *data;
if (bl->nr == 0) { /* blank bevel lists can happen */
continue;
}
/* exception handling; curve without bevel or extrude, with width correction */
if (BLI_listbase_is_empty(&dlbev)) {
DispList *dl = MEM_callocN(sizeof(DispList), "makeDispListbev");
dl->verts = MEM_mallocN(sizeof(float[3]) * bl->nr, "dlverts");
BLI_addtail(dispbase, dl);
if (bl->poly != -1) {
dl->type = DL_POLY;
}
else {
dl->type = DL_SEGM;
dl->flag = (DL_FRONT_CURVE | DL_BACK_CURVE);
}
dl->parts = 1;
dl->nr = bl->nr;
dl->col = nu->mat_nr;
dl->charidx = nu->charidx;
/* dl->rt will be used as flag for render face and */
/* CU_2D conflicts with R_NOPUNOFLIP */
dl->rt = nu->flag & ~CU_2D;
int a = dl->nr;
BevPoint *bevp = bl->bevpoints;
data = dl->verts;
while (a--) {
data[0] = bevp->vec[0] + widfac * bevp->sina;
data[1] = bevp->vec[1] + widfac * bevp->cosa;
data[2] = bevp->vec[2];
bevp++;
data += 3;
}
}
else {
ListBase bottom_capbase = {NULL, NULL};
ListBase top_capbase = {NULL, NULL};
float bottom_no[3] = {0.0f};
float top_no[3] = {0.0f};
float first_blend = 0.0f, last_blend = 0.0f;
int start, steps = 0;
if (nu->flagu & CU_NURB_CYCLIC) {
calc_bevfac_mapping_default(bl, &start, &first_blend, &steps, &last_blend);
}
else {
if (fabsf(cu->bevfac2 - cu->bevfac1) < FLT_EPSILON) {
continue;
}
calc_bevfac_mapping(cu, bl, nu, &start, &first_blend, &steps, &last_blend);
}
LISTBASE_FOREACH (DispList *, dlb, &dlbev) {
/* for each part of the bevel use a separate displblock */
DispList *dl = MEM_callocN(sizeof(DispList), "makeDispListbev1");
dl->verts = data = MEM_mallocN(sizeof(float[3]) * dlb->nr * steps, "dlverts");
BLI_addtail(dispbase, dl);
dl->type = DL_SURF;
dl->flag = dlb->flag & (DL_FRONT_CURVE | DL_BACK_CURVE);
if (dlb->type == DL_POLY) {
dl->flag |= DL_CYCL_U;
}
if ((bl->poly >= 0) && (steps > 2)) {
dl->flag |= DL_CYCL_V;
}
dl->parts = steps;
dl->nr = dlb->nr;
dl->col = nu->mat_nr;
dl->charidx = nu->charidx;
/* dl->rt will be used as flag for render face and */
/* CU_2D conflicts with R_NOPUNOFLIP */
dl->rt = nu->flag & ~CU_2D;
dl->bevel_split = BLI_BITMAP_NEW(steps, "bevel_split");
/* for each point of poly make a bevel piece */
BevPoint *bevp_first = bl->bevpoints;
BevPoint *bevp_last = &bl->bevpoints[bl->nr - 1];
BevPoint *bevp = &bl->bevpoints[start];
for (int i = start, a = 0; a < steps; i++, bevp++, a++) {
float radius_factor = 1.0;
float *cur_data = data;
if (cu->taperobj == NULL) {
radius_factor = bevp->radius;
}
else {
float taper_factor;
if (cu->flag & CU_MAP_TAPER) {
float len = (steps - 3) + first_blend + last_blend;
if (a == 0) {
taper_factor = 0.0f;
}
else if (a == steps - 1) {
taper_factor = 1.0f;
}
else {
taper_factor = ((float)a - (1.0f - first_blend)) / len;
}
}
else {
float len = bl->nr - 1;
taper_factor = (float)i / len;
if (a == 0) {
taper_factor += (1.0f - first_blend) / len;
}
else if (a == steps - 1) {
taper_factor -= (1.0f - last_blend) / len;
}
}
radius_factor = displist_calc_taper(depsgraph, scene, cu->taperobj, taper_factor);
}
if (bevp->split_tag) {
BLI_BITMAP_ENABLE(dl->bevel_split, a);
}
/* rotate bevel piece and write in data */
if ((a == 0) && (bevp != bevp_last)) {
rotateBevelPiece(
cu, bevp, bevp + 1, dlb, 1.0f - first_blend, widfac, radius_factor, &data);
}
else if ((a == steps - 1) && (bevp != bevp_first)) {
rotateBevelPiece(
cu, bevp, bevp - 1, dlb, 1.0f - last_blend, widfac, radius_factor, &data);
}
else {
rotateBevelPiece(cu, bevp, NULL, dlb, 0.0f, widfac, radius_factor, &data);
}
if ((cu->flag & CU_FILL_CAPS) && !(nu->flagu & CU_NURB_CYCLIC)) {
if (a == 1) {
fillBevelCap(nu, dlb, cur_data - 3 * dlb->nr, &bottom_capbase);
copy_v3_v3(bottom_no, bevp->dir);
}
if (a == steps - 1) {
fillBevelCap(nu, dlb, cur_data, &top_capbase);
negate_v3_v3(top_no, bevp->dir);
}
}
}
/* gl array drawing: using indices */
displist_surf_indices(dl);
}
if (bottom_capbase.first) {
BKE_displist_fill(&bottom_capbase, dispbase, bottom_no, false);
BKE_displist_fill(&top_capbase, dispbase, top_no, false);
BKE_displist_free(&bottom_capbase);
BKE_displist_free(&top_capbase);
}
}
}
BKE_displist_free(&dlbev);
}
if (!(cu->flag & CU_DEFORM_FILL)) {
curve_to_filledpoly(cu, &nubase, dispbase);
}
if (!for_orco) {
if ((cu->flag & CU_PATH) ||
DEG_get_eval_flags_for_id(depsgraph, &ob->id) & DAG_EVAL_NEED_CURVE_PATH) {
calc_curvepath(ob, &nubase);
}
BKE_nurbList_duplicate(&ob->runtime.curve_cache->deformed_nurbs, &nubase);
curve_calc_modifiers_post(
depsgraph, scene, ob, &nubase, dispbase, r_final, for_render, force_mesh_conversion);
}
if (cu->flag & CU_DEFORM_FILL && !ob->runtime.data_eval) {
curve_to_filledpoly(cu, &nubase, dispbase);
}
BKE_nurbList_free(&nubase);
}
}
void BKE_displist_make_curveTypes(
Depsgraph *depsgraph, Scene *scene, Object *ob, const bool for_render, const bool for_orco)
{
ListBase *dispbase;
/* The same check for duplis as in do_makeDispListCurveTypes.
* Happens when curve used for constraint/bevel was converted to mesh.
* check there is still needed for render displist and orco displists. */
if (!ELEM(ob->type, OB_SURF, OB_CURVE, OB_FONT)) {
return;
}
BKE_object_free_derived_caches(ob);
if (!ob->runtime.curve_cache) {
ob->runtime.curve_cache = MEM_callocN(sizeof(CurveCache), "CurveCache for curve types");
}
dispbase = &(ob->runtime.curve_cache->disp);
Mesh *mesh_eval = NULL;
do_makeDispListCurveTypes(depsgraph, scene, ob, dispbase, for_render, for_orco, &mesh_eval);
if (mesh_eval != NULL) {
BKE_object_eval_assign_data(ob, &mesh_eval->id, true);
}
boundbox_displist_object(ob);
}
void BKE_displist_make_curveTypes_forRender(Depsgraph *depsgraph,
Scene *scene,
Object *ob,
ListBase *dispbase,
Mesh **r_final,
const bool for_orco)
{
if (ob->runtime.curve_cache == NULL) {
ob->runtime.curve_cache = MEM_callocN(sizeof(CurveCache), "CurveCache for Curve");
}
do_makeDispListCurveTypes(depsgraph, scene, ob, dispbase, true, for_orco, r_final);
}
void BKE_displist_minmax(ListBase *dispbase, float min[3], float max[3])
{
const float *vert;
int a, tot = 0;
int doit = 0;
LISTBASE_FOREACH (DispList *, dl, dispbase) {
tot = (dl->type == DL_INDEX3) ? dl->nr : dl->nr * dl->parts;
vert = dl->verts;
for (a = 0; a < tot; a++, vert += 3) {
minmax_v3v3_v3(min, max, vert);
}
doit |= (tot != 0);
}
if (!doit) {
/* there's no geometry in displist, use zero-sized boundbox */
zero_v3(min);
zero_v3(max);
}
}
/* this is confusing, there's also min_max_object, applying the obmat... */
static void boundbox_displist_object(Object *ob)
{
if (ELEM(ob->type, OB_CURVE, OB_SURF, OB_FONT)) {
/* Curve's BB is already calculated as a part of modifier stack,
* here we only calculate object BB based on final display list.
*/
/* object's BB is calculated from final displist */
if (ob->runtime.bb == NULL) {
ob->runtime.bb = MEM_callocN(sizeof(BoundBox), "boundbox");
}
Mesh *mesh_eval = BKE_object_get_evaluated_mesh(ob);
if (mesh_eval) {
BKE_object_boundbox_calc_from_mesh(ob, mesh_eval);
}
else {
float min[3], max[3];
INIT_MINMAX(min, max);
BKE_displist_minmax(&ob->runtime.curve_cache->disp, min, max);
BKE_boundbox_init_from_minmax(ob->runtime.bb, min, max);
ob->runtime.bb->flag &= ~BOUNDBOX_DIRTY;
}
}
}
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