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test/source/blender/blenkernel/intern/displist.cc
Hans Goudey cfa53e0fbe Refactor: Move normals out of MVert, lazy calculation 
As described in T91186, this commit moves mesh vertex normals into a
contiguous array of float vectors in a custom data layer, how face
normals are currently stored.

The main interface is documented in `BKE_mesh.h`. Vertex and face
normals are now calculated on-demand and cached, retrieved with an
"ensure" function. Since the logical state of a mesh is now "has
normals when necessary", they can be retrieved from a `const` mesh.

The goal is to use on-demand calculation for all derived data, but
leave room for eager calculation for performance purposes (modifier
evaluation is threaded, but viewport data generation is not).

**Benefits**
This moves us closer to a SoA approach rather than the current AoS
paradigm. Accessing a contiguous `float3` is much more efficient than
retrieving data from a larger struct. The memory requirements for
accessing only normals or vertex locations are smaller, and at the
cost of more memory usage for just normals, they now don't have to
be converted between float and short, which also simplifies code

In the future, the remaining items can be removed from `MVert`,
leaving only `float3`, which has similar benefits (see T93602).

Removing the combination of derived and original data makes it
conceptually simpler to only calculate normals when necessary.
This is especially important now that we have more opportunities
for temporary meshes in geometry nodes.

**Performance**
In addition to the theoretical future performance improvements by
making `MVert == float3`, I've done some basic performance testing
on this patch directly. The data is fairly rough, but it gives an idea
about where things stand generally.
 - Mesh line primitive 4m Verts: 1.16x faster (36 -> 31 ms),
   showing that accessing just `MVert` is now more efficient.
 - Spring Splash Screen: 1.03-1.06 -> 1.06-1.11 FPS, a very slight
   change that at least shows there is no regression.
 - Sprite Fright Snail Smoosh: 3.30-3.40 -> 3.42-3.50 FPS, a small
   but observable speedup.
 - Set Position Node with Scaled Normal: 1.36x faster (53 -> 39 ms),
   shows that using normals in geometry nodes is faster.
 - Normal Calculation 1.6m Vert Cube: 1.19x faster (25 -> 21 ms),
   shows that calculating normals is slightly faster now.
 - File Size of 1.6m Vert Cube: 1.03x smaller (214.7 -> 208.4 MB),
   Normals are not saved in files, which can help with large meshes.

As for memory usage, it may be slightly more in some cases, but
I didn't observe any difference in the production files I tested.

**Tests**
Some modifiers and cycles test results need to be updated with this
commit, for two reasons:
 - The subdivision surface modifier is not responsible for calculating
   normals anymore. In master, the modifier creates different normals
   than the result of the `Mesh` normal calculation, so this is a bug
   fix.
 - There are small differences in the results of some modifiers that
   use normals because they are not converted to and from `short`
   anymore.

**Future improvements**
 - Remove `ModifierTypeInfo::dependsOnNormals`. Code in each modifier
   already retrieves normals if they are needed anyway.
 - Copy normals as part of a better CoW system for attributes.
 - Make more areas use lazy instead of eager normal calculation.
 - Remove `BKE_mesh_normals_tag_dirty` in more places since that is
   now the default state of a new mesh.
 - Possibly apply a similar change to derived face corner normals.

Differential Revision: https://developer.blender.org/D12770
2022-01-13 14:38:25 -06:00

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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 <cmath>
#include <cstdio>
#include <cstring>
#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_index_range.hh"
#include "BLI_linklist.h"
#include "BLI_listbase.h"
#include "BLI_math.h"
#include "BLI_memarena.h"
#include "BLI_scanfill.h"
#include "BLI_span.hh"
#include "BLI_string.h"
#include "BLI_utildefines.h"
#include "BKE_anim_path.h"
#include "BKE_curve.h"
#include "BKE_displist.h"
#include "BKE_geometry_set.hh"
#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 "BKE_spline.hh"
#include "BKE_vfont.h"
#include "BLI_sys_types.h" /* For #intptr_t support. */
#include "DEG_depsgraph.h"
#include "DEG_depsgraph_query.h"
using blender::IndexRange;
static void 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);
}
MEM_freeN(dl);
}
}
void BKE_displist_free(ListBase *lb)
{
DispList *dl;
while ((dl = (DispList *)BLI_pophead(lb))) {
displist_elem_free(dl);
}
}
DispList *BKE_displist_find(ListBase *lb, int type)
{
LISTBASE_FOREACH (DispList *, dl, lb) {
if (dl->type == type) {
return dl;
}
}
return nullptr;
}
void BKE_displist_copy(ListBase *lbn, const ListBase *lb)
{
BKE_displist_free(lbn);
LISTBASE_FOREACH (const DispList *, dl, lb) {
DispList *dln = (DispList *)MEM_dupallocN(dl);
BLI_addtail(lbn, dln);
dln->verts = (float *)MEM_dupallocN(dl->verts);
dln->nors = (float *)MEM_dupallocN(dl->nors);
dln->index = (int *)MEM_dupallocN(dl->index);
}
}
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 == nullptr) {
dl->nors = (float *)MEM_callocN(sizeof(float[3]), __func__);
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 == nullptr) {
dl->nors = (float *)MEM_callocN(sizeof(float[3]) * dl->nr * dl->parts, __func__);
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(const ListBase *lb, int *totvert, int *totface, int *tottri)
{
LISTBASE_FOREACH (const 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(
const 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 #DispList ********************* */
#ifdef __INTEL_COMPILER
/* ICC with the optimization -02 causes crashes. */
# pragma intel optimization_level 1
#endif
static void curve_to_displist(const Curve *cu,
const ListBase *nubase,
const bool for_render,
ListBase *r_dispbase)
{
const bool editmode = (!for_render && (cu->editnurb || cu->editfont));
LISTBASE_FOREACH (Nurb *, nu, nubase) {
if (nu->hide != 0 && editmode) {
continue;
}
if (!BKE_nurb_check_valid_u(nu)) {
continue;
}
const int resolution = (for_render && cu->resolu_ren != 0) ? cu->resolu_ren : nu->resolu;
const bool is_cyclic = nu->flagu & CU_NURB_CYCLIC;
const BezTriple *bezt_first = &nu->bezt[0];
const BezTriple *bezt_last = &nu->bezt[nu->pntsu - 1];
if (nu->type == CU_BEZIER) {
int samples_len = 0;
for (int i = 1; i < nu->pntsu; i++) {
const BezTriple *prevbezt = &nu->bezt[i - 1];
const BezTriple *bezt = &nu->bezt[i];
if (prevbezt->h2 == HD_VECT && bezt->h1 == HD_VECT) {
samples_len++;
}
else {
samples_len += resolution;
}
}
if (is_cyclic) {
/* If the curve is cyclic, sample the last edge between the last and first points. */
if (bezt_first->h1 == HD_VECT && bezt_last->h2 == HD_VECT) {
samples_len++;
}
else {
samples_len += resolution;
}
}
else {
/* Otherwise, we only need one additional sample to complete the last edge. */
samples_len++;
}
/* Check that there are more than two points so the curve doesn't loop back on itself. This
* needs to be separate from `is_cyclic` because cyclic sampling can work with two points
* and resolution > 1. */
const bool use_cyclic_sample = is_cyclic && (samples_len != 2);
DispList *dl = MEM_cnew<DispList>(__func__);
/* Add one to the length because of 'BKE_curve_forward_diff_bezier'. */
dl->verts = (float *)MEM_mallocN(sizeof(float[3]) * (samples_len + 1), __func__);
BLI_addtail(r_dispbase, dl);
dl->parts = 1;
dl->nr = samples_len;
dl->col = nu->mat_nr;
dl->charidx = nu->charidx;
dl->type = use_cyclic_sample ? DL_POLY : DL_SEGM;
float *data = dl->verts;
for (int i = 1; i < nu->pntsu; i++) {
const BezTriple *prevbezt = &nu->bezt[i - 1];
const BezTriple *bezt = &nu->bezt[i];
if (prevbezt->h2 == HD_VECT && bezt->h1 == HD_VECT) {
copy_v3_v3(data, prevbezt->vec[1]);
data += 3;
}
else {
for (int 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,
resolution,
sizeof(float[3]));
}
data += 3 * resolution;
}
}
if (is_cyclic) {
if (bezt_first->h1 == HD_VECT && bezt_last->h2 == HD_VECT) {
copy_v3_v3(data, bezt_last->vec[1]);
}
else {
for (int j = 0; j < 3; j++) {
BKE_curve_forward_diff_bezier(bezt_last->vec[1][j],
bezt_last->vec[2][j],
bezt_first->vec[0][j],
bezt_first->vec[1][j],
data + j,
resolution,
sizeof(float[3]));
}
}
}
else {
copy_v3_v3(data, bezt_last->vec[1]);
}
}
else if (nu->type == CU_NURBS) {
const int len = (resolution * SEGMENTSU(nu));
DispList *dl = MEM_cnew<DispList>(__func__);
dl->verts = (float *)MEM_mallocN(len * sizeof(float[3]), __func__);
BLI_addtail(r_dispbase, dl);
dl->parts = 1;
dl->nr = len;
dl->col = nu->mat_nr;
dl->charidx = nu->charidx;
dl->type = is_cyclic ? DL_POLY : DL_SEGM;
BKE_nurb_makeCurve(nu, dl->verts, nullptr, nullptr, nullptr, resolution, sizeof(float[3]));
}
else if (nu->type == CU_POLY) {
const int len = nu->pntsu;
DispList *dl = MEM_cnew<DispList>(__func__);
dl->verts = (float *)MEM_mallocN(len * sizeof(float[3]), __func__);
BLI_addtail(r_dispbase, dl);
dl->parts = 1;
dl->nr = len;
dl->col = nu->mat_nr;
dl->charidx = nu->charidx;
dl->type = (is_cyclic && (dl->nr != 2)) ? DL_POLY : DL_SEGM;
float(*coords)[3] = (float(*)[3])dl->verts;
for (int i = 0; i < len; i++) {
const BPoint *bp = &nu->bp[i];
copy_v3_v3(coords[i], bp->vec);
}
}
}
}
void BKE_displist_fill(const ListBase *dispbase,
ListBase *to,
const float normal_proj[3],
const bool flip_normal)
{
if (dispbase == nullptr) {
return;
}
if (BLI_listbase_is_empty(dispbase)) {
return;
}
const int scanfill_flag = BLI_SCANFILL_CALC_REMOVE_DOUBLES | BLI_SCANFILL_CALC_POLYS |
BLI_SCANFILL_CALC_HOLES;
MemArena *sf_arena = BLI_memarena_new(BLI_SCANFILL_ARENA_SIZE, __func__);
short colnr = 0;
int charidx = 0;
bool should_continue = true;
while (should_continue) {
should_continue = false;
bool nextcol = false;
ScanFillContext sf_ctx;
BLI_scanfill_begin_arena(&sf_ctx, sf_arena);
int totvert = 0;
short dl_flag_accum = 0;
short dl_rt_accum = 0;
LISTBASE_FOREACH (const DispList *, dl, dispbase) {
if (dl->type == DL_POLY) {
if (charidx < dl->charidx) {
should_continue = true;
}
else if (charidx == dl->charidx) { /* character with needed index */
if (colnr == dl->col) {
sf_ctx.poly_nr++;
/* Make verts and edges. */
ScanFillVert *sf_vert = nullptr;
ScanFillVert *sf_vert_last = nullptr;
ScanFillVert *sf_vert_new = nullptr;
for (int i = 0; i < dl->nr; i++) {
sf_vert_last = sf_vert;
sf_vert = BLI_scanfill_vert_add(&sf_ctx, &dl->verts[3 * i]);
totvert++;
if (sf_vert_last == nullptr) {
sf_vert_new = sf_vert;
}
else {
BLI_scanfill_edge_add(&sf_ctx, sf_vert_last, sf_vert);
}
}
if (sf_vert != nullptr && sf_vert_new != nullptr) {
BLI_scanfill_edge_add(&sf_ctx, sf_vert, sf_vert_new);
}
}
else if (colnr < dl->col) {
/* got poly with next material at current char */
should_continue = true;
nextcol = true;
}
}
dl_flag_accum |= dl->flag;
dl_rt_accum |= dl->rt;
}
}
const int triangles_len = BLI_scanfill_calc_ex(&sf_ctx, scanfill_flag, normal_proj);
if (totvert != 0 && triangles_len != 0) {
DispList *dlnew = MEM_cnew<DispList>(__func__);
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 = triangles_len;
dlnew->index = (int *)MEM_mallocN(sizeof(int[3]) * triangles_len, __func__);
dlnew->verts = (float *)MEM_mallocN(sizeof(float[3]) * totvert, __func__);
/* vert data */
int i;
LISTBASE_FOREACH_INDEX (ScanFillVert *, sf_vert, &sf_ctx.fillvertbase, i) {
copy_v3_v3(&dlnew->verts[3 * i], sf_vert->co);
sf_vert->tmp.i = i; /* Index number. */
}
/* index data */
int *index = dlnew->index;
LISTBASE_FOREACH (ScanFillFace *, sf_tri, &sf_ctx.fillfacebase) {
index[0] = sf_tri->v1->tmp.i;
index[1] = flip_normal ? sf_tri->v3->tmp.i : sf_tri->v2->tmp.i;
index[2] = flip_normal ? sf_tri->v2->tmp.i : sf_tri->v3->tmp.i;
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(const Curve *cu, ListBase *dispbase)
{
ListBase front = {nullptr, nullptr};
ListBase back = {nullptr, nullptr};
LISTBASE_FOREACH (const 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_cnew<DispList>(__func__);
BLI_addtail(&front, dlnew);
dlnew->verts = (float *)MEM_mallocN(sizeof(float[3]) * dl->parts, __func__);
dlnew->nr = dl->parts;
dlnew->parts = 1;
dlnew->type = DL_POLY;
dlnew->flag = DL_BACK_CURVE;
dlnew->col = dl->col;
dlnew->charidx = dl->charidx;
const float *old_verts = dl->verts;
float *new_verts = dlnew->verts;
for (int i = 0; i < dl->parts; i++) {
copy_v3_v3(new_verts, old_verts);
new_verts += 3;
old_verts += 3 * dl->nr;
}
}
if ((cu->flag & CU_FRONT) && (dl->flag & DL_FRONT_CURVE)) {
DispList *dlnew = MEM_cnew<DispList>(__func__);
BLI_addtail(&back, dlnew);
dlnew->verts = (float *)MEM_mallocN(sizeof(float[3]) * dl->parts, __func__);
dlnew->nr = dl->parts;
dlnew->parts = 1;
dlnew->type = DL_POLY;
dlnew->flag = DL_FRONT_CURVE;
dlnew->col = dl->col;
dlnew->charidx = dl->charidx;
const float *old_verts = dl->verts + 3 * (dl->nr - 1);
float *new_verts = dlnew->verts;
for (int i = 0; i < dl->parts; i++) {
copy_v3_v3(new_verts, old_verts);
new_verts += 3;
old_verts += 3 * dl->nr;
}
}
}
}
}
const float z_up[3] = {0.0f, 0.0f, -1.0f};
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(const Curve *cu, 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,
const Scene *scene,
Object *taperobj,
float fac)
{
if (taperobj == nullptr || taperobj->type != OB_CURVE) {
return 1.0;
}
DispList *dl = taperobj->runtime.curve_cache ?
(DispList *)taperobj->runtime.curve_cache->disp.first :
nullptr;
if (dl == nullptr) {
BKE_displist_make_curveTypes(depsgraph, scene, taperobj, false);
dl = (DispList *)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 coordinate. */
}
}
return 1.0;
}
float BKE_displist_calc_taper(
Depsgraph *depsgraph, const Scene *scene, Object *taperobj, int cur, int tot)
{
const 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_cnew<CurveCache>(__func__);
}
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);
}
}
static ModifierData *curve_get_tessellate_point(const Scene *scene,
const Object *ob,
const bool for_render,
const bool editmode)
{
VirtualModifierData virtualModifierData;
ModifierData *md = BKE_modifiers_get_virtual_modifierlist(ob, &virtualModifierData);
ModifierMode required_mode = for_render ? eModifierMode_Render : eModifierMode_Realtime;
if (editmode) {
required_mode = (ModifierMode)((int)required_mode | eModifierMode_Editmode);
}
ModifierData *pretessellatePoint = nullptr;
for (; md; md = md->next) {
const ModifierTypeInfo *mti = BKE_modifier_get_info((ModifierType)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;
}
void BKE_curve_calc_modifiers_pre(Depsgraph *depsgraph,
const Scene *scene,
Object *ob,
ListBase *source_nurb,
ListBase *target_nurb,
const bool for_render)
{
const Curve *cu = (const Curve *)ob->data;
BKE_modifiers_clear_errors(ob);
const bool editmode = (!for_render && (cu->editnurb || cu->editfont));
ModifierMode required_mode = for_render ? eModifierMode_Render : eModifierMode_Realtime;
if (editmode) {
required_mode = (ModifierMode)((int)required_mode | eModifierMode_Editmode);
}
ModifierApplyFlag apply_flag = (ModifierApplyFlag)0;
if (editmode) {
apply_flag = MOD_APPLY_USECACHE;
}
if (for_render) {
apply_flag = MOD_APPLY_RENDER;
}
float *keyVerts = nullptr;
float(*deformedVerts)[3] = nullptr;
int numVerts = 0;
if (!editmode) {
int numElems = 0;
keyVerts = BKE_key_evaluate_object(ob, &numElems);
if (keyVerts) {
BLI_assert(BKE_keyblock_curve_element_count(source_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(source_nurb, keyVerts, &numVerts);
}
}
const ModifierEvalContext mectx = {depsgraph, ob, apply_flag};
ModifierData *pretessellatePoint = curve_get_tessellate_point(scene, ob, for_render, editmode);
if (pretessellatePoint) {
VirtualModifierData virtualModifierData;
for (ModifierData *md = BKE_modifiers_get_virtual_modifierlist(ob, &virtualModifierData); md;
md = md->next) {
const ModifierTypeInfo *mti = BKE_modifier_get_info((ModifierType)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(source_nurb, &numVerts);
}
mti->deformVerts(md, &mectx, nullptr, deformedVerts, numVerts);
if (md == pretessellatePoint) {
break;
}
}
}
if (deformedVerts) {
BKE_curve_nurbs_vert_coords_apply(target_nurb, deformedVerts, false);
MEM_freeN(deformedVerts);
}
if (keyVerts) { /* these are not passed through modifier stack */
BKE_curve_nurbs_key_vert_tilts_apply(target_nurb, keyVerts);
}
if (keyVerts) {
MEM_freeN(keyVerts);
}
}
/**
* \return True if the deformed curve control point data should be implicitly
* converted directly to a mesh, or false if it can be left as curve data via #CurveEval.
*/
static bool do_curve_implicit_mesh_conversion(const Curve *curve,
ModifierData *first_modifier,
const Scene *scene,
const ModifierMode required_mode)
{
/* Skip implicit filling and conversion to mesh when using "fast text editing". */
if (curve->flag & CU_FAST) {
return false;
}
/* Do implicit conversion to mesh with the object bevel mode. */
if (curve->bevel_mode == CU_BEV_MODE_OBJECT && curve->bevobj != nullptr) {
return true;
}
/* 2D curves are sometimes implicitly filled and converted to a mesh. */
if (CU_DO_2DFILL(curve)) {
return true;
}
/* Curve objects with implicit "tube" meshes should convert implicitly to a mesh. */
if (curve->extrude != 0.0f || curve->bevel_radius != 0.0f) {
return true;
}
/* If a non-geometry-nodes modifier is enabled before a nodes modifier,
* force conversion to mesh, since only the nodes modifier supports curve data. */
ModifierData *md = first_modifier;
for (; md; md = md->next) {
if (BKE_modifier_is_enabled(scene, md, required_mode)) {
if (md->type == eModifierType_Nodes) {
break;
}
return true;
}
}
return false;
}
static GeometrySet curve_calc_modifiers_post(Depsgraph *depsgraph,
const Scene *scene,
Object *ob,
const ListBase *dispbase,
const bool for_render)
{
const Curve *cu = (const Curve *)ob->data;
const bool editmode = (!for_render && (cu->editnurb || cu->editfont));
const bool use_cache = !for_render;
ModifierApplyFlag apply_flag = for_render ? MOD_APPLY_RENDER : (ModifierApplyFlag)0;
ModifierMode required_mode = for_render ? eModifierMode_Render : eModifierMode_Realtime;
if (editmode) {
required_mode = (ModifierMode)((int)required_mode | eModifierMode_Editmode);
}
const ModifierEvalContext mectx_deform = {
depsgraph, ob, editmode ? (ModifierApplyFlag)(apply_flag | MOD_APPLY_USECACHE) : apply_flag};
const ModifierEvalContext mectx_apply = {
depsgraph,
ob,
use_cache ? (ModifierApplyFlag)(apply_flag | MOD_APPLY_USECACHE) : apply_flag};
ModifierData *pretessellatePoint = curve_get_tessellate_point(scene, ob, for_render, editmode);
VirtualModifierData virtualModifierData;
ModifierData *md = pretessellatePoint == nullptr ?
BKE_modifiers_get_virtual_modifierlist(ob, &virtualModifierData) :
pretessellatePoint->next;
GeometrySet geometry_set;
if (ob->type == OB_SURF || do_curve_implicit_mesh_conversion(cu, md, scene, required_mode)) {
Mesh *mesh = BKE_mesh_new_nomain_from_curve_displist(ob, dispbase);
geometry_set.replace_mesh(mesh);
}
else {
std::unique_ptr<CurveEval> curve_eval = curve_eval_from_dna_curve(
*cu, ob->runtime.curve_cache->deformed_nurbs);
geometry_set.replace_curve(curve_eval.release());
}
for (; md; md = md->next) {
const ModifierTypeInfo *mti = BKE_modifier_get_info((ModifierType)md->type);
if (!BKE_modifier_is_enabled(scene, md, required_mode)) {
continue;
}
if (md->type == eModifierType_Nodes) {
mti->modifyGeometrySet(md, &mectx_apply, &geometry_set);
continue;
}
if (!geometry_set.has_mesh()) {
geometry_set.replace_mesh(BKE_mesh_new_nomain(0, 0, 0, 0, 0));
}
Mesh *mesh = geometry_set.get_mesh_for_write();
if (mti->type == eModifierTypeType_OnlyDeform) {
int totvert;
float(*vertex_coords)[3] = BKE_mesh_vert_coords_alloc(mesh, &totvert);
if (mti->dependsOnNormals != nullptr && mti->dependsOnNormals(md)) {
BKE_mesh_vertex_normals_ensure(mesh);
}
mti->deformVerts(md, &mectx_deform, mesh, vertex_coords, totvert);
BKE_mesh_vert_coords_apply(mesh, vertex_coords);
MEM_freeN(vertex_coords);
}
else {
if (mti->dependsOnNormals != nullptr && mti->dependsOnNormals(md)) {
BKE_mesh_vertex_normals_ensure(mesh);
}
Mesh *output_mesh = mti->modifyMesh(md, &mectx_apply, mesh);
if (mesh != output_mesh) {
geometry_set.replace_mesh(output_mesh);
}
}
}
if (geometry_set.has_mesh()) {
Mesh *final_mesh = geometry_set.get_mesh_for_write();
BKE_mesh_ensure_normals_for_display(final_mesh);
BLI_strncpy(final_mesh->id.name, cu->id.name, sizeof(final_mesh->id.name));
*((short *)final_mesh->id.name) = ID_ME;
}
return geometry_set;
}
static void displist_surf_indices(DispList *dl)
{
int b, p1, p2, p3, p4;
dl->totindex = 0;
int *index = dl->index = (int *)MEM_mallocN(sizeof(int[4]) * (dl->parts + 1) * (dl->nr + 1),
__func__);
for (int 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++;
}
}
}
static void evaluate_surface_object(Depsgraph *depsgraph,
const Scene *scene,
Object *ob,
const bool for_render,
ListBase *r_dispbase,
Mesh **r_final)
{
BLI_assert(ob->type == OB_SURF);
const Curve *cu = (const Curve *)ob->data;
ListBase *deformed_nurbs = &ob->runtime.curve_cache->deformed_nurbs;
if (!for_render && cu->editnurb) {
BKE_nurbList_duplicate(deformed_nurbs, BKE_curve_editNurbs_get_for_read(cu));
}
else {
BKE_nurbList_duplicate(deformed_nurbs, &cu->nurb);
}
BKE_curve_calc_modifiers_pre(depsgraph, scene, ob, deformed_nurbs, deformed_nurbs, for_render);
LISTBASE_FOREACH (const Nurb *, nu, deformed_nurbs) {
if (!(for_render || nu->hide == 0) || !BKE_nurb_check_valid_uv(nu)) {
continue;
}
const int resolu = (for_render && cu->resolu_ren) ? cu->resolu_ren : nu->resolu;
const int resolv = (for_render && cu->resolv_ren) ? cu->resolv_ren : nu->resolv;
if (nu->pntsv == 1) {
const int len = SEGMENTSU(nu) * resolu;
DispList *dl = MEM_cnew<DispList>(__func__);
dl->verts = (float *)MEM_mallocN(len * sizeof(float[3]), __func__);
BLI_addtail(r_dispbase, dl);
dl->parts = 1;
dl->nr = len;
dl->col = nu->mat_nr;
dl->charidx = nu->charidx;
dl->rt = nu->flag;
float *data = dl->verts;
if (nu->flagu & CU_NURB_CYCLIC) {
dl->type = DL_POLY;
}
else {
dl->type = DL_SEGM;
}
BKE_nurb_makeCurve(nu, data, nullptr, nullptr, nullptr, resolu, sizeof(float[3]));
}
else {
const int len = (nu->pntsu * resolu) * (nu->pntsv * resolv);
DispList *dl = MEM_cnew<DispList>(__func__);
dl->verts = (float *)MEM_mallocN(len * sizeof(float[3]), __func__);
BLI_addtail(r_dispbase, dl);
dl->col = nu->mat_nr;
dl->charidx = nu->charidx;
dl->rt = nu->flag;
float *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);
}
}
curve_to_filledpoly(cu, r_dispbase);
GeometrySet geometry_set = curve_calc_modifiers_post(
depsgraph, scene, ob, r_dispbase, for_render);
if (!geometry_set.has_mesh()) {
geometry_set.replace_mesh(BKE_mesh_new_nomain(0, 0, 0, 0, 0));
}
MeshComponent &mesh_component = geometry_set.get_component_for_write<MeshComponent>();
*r_final = mesh_component.release();
}
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 == nullptr) {
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 == nullptr) {
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(const Nurb *nu,
const DispList *dlb,
const float *prev_fp,
ListBase *dispbase)
{
DispList *dl = MEM_cnew<DispList>(__func__);
dl->verts = (float *)MEM_mallocN(sizeof(float[3]) * dlb->nr, __func__);
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 = nu->flag;
BLI_addtail(dispbase, dl);
}
static void calc_bevfac_segment_mapping(
const BevList *bl, float bevfac, float spline_length, int *r_bev, float *r_blend)
{
float 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) {
float 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(
const 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(
const 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(const Curve *cu,
const BevList *bl,
const 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 GeometrySet evaluate_curve_type_object(Depsgraph *depsgraph,
const Scene *scene,
Object *ob,
const bool for_render,
ListBase *r_dispbase)
{
BLI_assert(ELEM(ob->type, OB_CURVE, OB_FONT));
const Curve *cu = (const Curve *)ob->data;
ListBase *deformed_nurbs = &ob->runtime.curve_cache->deformed_nurbs;
if (ob->type == OB_FONT) {
BKE_vfont_to_curve_nubase(ob, FO_EDIT, deformed_nurbs);
}
else {
BKE_nurbList_duplicate(deformed_nurbs, BKE_curve_nurbs_get_for_read(cu));
}
BKE_curve_calc_modifiers_pre(depsgraph, scene, ob, deformed_nurbs, deformed_nurbs, for_render);
BKE_curve_bevelList_make(ob, deformed_nurbs, for_render);
if ((cu->flag & CU_PATH) ||
DEG_get_eval_flags_for_id(depsgraph, &ob->id) & DAG_EVAL_NEED_CURVE_PATH) {
BKE_anim_path_calc_data(ob);
}
/* If curve has no bevel will return nothing */
ListBase dlbev = BKE_curve_bevel_make(cu);
/* no bevel or extrude, and no width correction? */
if (BLI_listbase_is_empty(&dlbev) && cu->offset == 1.0f) {
curve_to_displist(cu, deformed_nurbs, for_render, r_dispbase);
}
else {
const float widfac = cu->offset - 1.0f;
const BevList *bl = (BevList *)ob->runtime.curve_cache->bev.first;
const Nurb *nu = (Nurb *)deformed_nurbs->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_cnew<DispList>("makeDispListbev");
dl->verts = (float *)MEM_mallocN(sizeof(float[3]) * bl->nr, "dlverts");
BLI_addtail(r_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 = nu->flag;
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 = {nullptr, nullptr};
ListBase top_capbase = {nullptr, nullptr};
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_cnew<DispList>(__func__);
dl->verts = data = (float *)MEM_mallocN(sizeof(float[3]) * dlb->nr * steps, __func__);
BLI_addtail(r_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 = nu->flag;
/* 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 == nullptr) {
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 (cu->taper_radius_mode == CU_TAPER_RADIUS_MULTIPLY) {
radius_factor *= bevp->radius;
}
else if (cu->taper_radius_mode == CU_TAPER_RADIUS_ADD) {
radius_factor += bevp->radius;
}
}
/* 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, nullptr, 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, r_dispbase, bottom_no, false);
BKE_displist_fill(&top_capbase, r_dispbase, top_no, false);
BKE_displist_free(&bottom_capbase);
BKE_displist_free(&top_capbase);
}
}
}
}
BKE_displist_free(&dlbev);
curve_to_filledpoly(cu, r_dispbase);
return curve_calc_modifiers_post(depsgraph, scene, ob, r_dispbase, for_render);
}
void BKE_displist_make_curveTypes(Depsgraph *depsgraph,
const Scene *scene,
Object *ob,
const bool for_render)
{
BLI_assert(ELEM(ob->type, OB_SURF, OB_CURVE, OB_FONT));
Curve &cow_curve = *(Curve *)ob->data;
BKE_object_free_derived_caches(ob);
cow_curve.curve_eval = nullptr;
ob->runtime.curve_cache = MEM_cnew<CurveCache>(__func__);
ListBase *dispbase = &ob->runtime.curve_cache->disp;
if (ob->type == OB_SURF) {
Mesh *mesh_eval;
evaluate_surface_object(depsgraph, scene, ob, for_render, dispbase, &mesh_eval);
BKE_object_eval_assign_data(ob, &mesh_eval->id, true);
}
else {
GeometrySet geometry = evaluate_curve_type_object(depsgraph, scene, ob, for_render, dispbase);
if (geometry.has_curve()) {
/* Assign the evaluated curve to the object's "data_eval". In addition to the curve_eval
* added to the curve here, it will also contain a copy of the original curve's data. This is
* essential, because it maintains the expected behavior for evaluated curve data from before
* the CurveEval data type was introduced, when an evaluated object's curve data was just a
* copy of the original curve and everything else ended up in #CurveCache. */
CurveComponent &curve_component = geometry.get_component_for_write<CurveComponent>();
cow_curve.curve_eval = curve_component.get_for_write();
BKE_object_eval_assign_data(ob, &cow_curve.id, false);
}
ob->runtime.geometry_set_eval = new GeometrySet(std::move(geometry));
}
BKE_object_boundbox_calc_from_evaluated_geometry(ob);
}
void BKE_displist_minmax(const ListBase *dispbase, float min[3], float max[3])
{
bool doit = false;
LISTBASE_FOREACH (const DispList *, dl, dispbase) {
const int tot = (ELEM(dl->type, DL_INDEX3, DL_INDEX4)) ? dl->nr : dl->nr * dl->parts;
for (const int i : IndexRange(tot)) {
minmax_v3v3_v3(min, max, &dl->verts[i * 3]);
}
if (tot != 0) {
doit = true;
}
}
if (!doit) {
/* there's no geometry in displist, use zero-sized boundbox */
zero_v3(min);
zero_v3(max);
}
}
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