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/* SPDX-License-Identifier: GPL-2.0-or-later
* Copyright 2001-2002 NaN Holding BV. All rights reserved. */
/** \file
* \ingroup edcurve
*/
#include "DNA_object_types.h"
#include "DNA_scene_types.h"
#include "MEM_guardedalloc.h"
#include "BLI_listbase.h"
#include "BLI_math.h"
#include "BKE_curve.h"
#include "BKE_fcurve.h"
#include "BKE_layer.h"
#include "DEG_depsgraph.h"
#include "DEG_depsgraph_build.h"
#include "ED_curve.h"
#include "ED_view3d.h"
#include "curve_intern.h"
/* -------------------------------------------------------------------- */
/** \name Cursor Picking API
* \{ */
static void ED_curve_pick_vert__do_closest(void *userData,
Nurb *nu,
BPoint *bp,
BezTriple *bezt,
int beztindex,
bool handles_visible,
const float screen_co[2])
{
struct {
BPoint *bp;
BezTriple *bezt;
Nurb *nurb;
float dist;
int hpoint, select;
float mval_fl[2];
bool is_changed;
} *data = userData;
uint8_t flag;
float dist_test;
if (bp) {
flag = bp->f1;
}
else {
BLI_assert(handles_visible || beztindex == 1);
if (beztindex == 0) {
flag = bezt->f1;
}
else if (beztindex == 1) {
flag = bezt->f2;
}
else {
flag = bezt->f3;
}
}
dist_test = len_manhattan_v2v2(data->mval_fl, screen_co);
if ((flag & SELECT) == data->select) {
dist_test += 5.0f;
}
if (bezt && beztindex == 1) {
dist_test += 3.0f; /* middle points get a small disadvantage */
}
if (dist_test < data->dist) {
data->dist = dist_test;
data->bp = bp;
data->bezt = bezt;
data->nurb = nu;
data->hpoint = bezt ? beztindex : 0;
data->is_changed = true;
}
UNUSED_VARS_NDEBUG(handles_visible);
}
bool ED_curve_pick_vert_ex(ViewContext *vc,
short sel,
const int dist_px,
Nurb **r_nurb,
BezTriple **r_bezt,
BPoint **r_bp,
short *r_handle,
Base **r_base)
{
/* (sel == 1): selected gets a disadvantage */
/* in nurb and bezt or bp the nearest is written */
/* return 0 1 2: handlepunt */
struct {
BPoint *bp;
BezTriple *bezt;
Nurb *nurb;
float dist;
int hpoint, select;
float mval_fl[2];
bool is_changed;
} data = {NULL};
data.dist = dist_px;
data.hpoint = 0;
data.select = sel;
data.mval_fl[0] = vc->mval[0];
data.mval_fl[1] = vc->mval[1];
uint bases_len;
Base **bases = BKE_view_layer_array_from_bases_in_edit_mode_unique_data(
vc->view_layer, vc->v3d, &bases_len);
for (uint base_index = 0; base_index < bases_len; base_index++) {
Base *base = bases[base_index];
data.is_changed = false;
ED_view3d_viewcontext_init_object(vc, base->object);
ED_view3d_init_mats_rv3d(vc->obedit, vc->rv3d);
nurbs_foreachScreenVert(vc, ED_curve_pick_vert__do_closest, &data, V3D_PROJ_TEST_CLIP_DEFAULT);
if (r_base && data.is_changed) {
*r_base = base;
}
}
MEM_freeN(bases);
*r_nurb = data.nurb;
*r_bezt = data.bezt;
*r_bp = data.bp;
if (r_handle) {
*r_handle = data.hpoint;
}
return (data.bezt || data.bp);
}
bool ED_curve_pick_vert(ViewContext *vc,
short sel,
Nurb **r_nurb,
BezTriple **r_bezt,
BPoint **r_bp,
short *r_handle,
Base **r_base)
{
return ED_curve_pick_vert_ex(
vc, sel, ED_view3d_select_dist_px(), r_nurb, r_bezt, r_bp, r_handle, r_base);
}
/** \} */
/* -------------------------------------------------------------------- */
/** \name Selection Queries
* \{ */
void ED_curve_nurb_vert_selected_find(
Curve *cu, View3D *v3d, Nurb **r_nu, BezTriple **r_bezt, BPoint **r_bp)
{
/* In nu and (bezt or bp) selected are written if there's 1 sel. */
/* If more points selected in 1 spline: return only nu, bezt and bp are 0. */
ListBase *editnurb = &cu->editnurb->nurbs;
BezTriple *bezt1;
BPoint *bp1;
int a;
*r_nu = NULL;
*r_bezt = NULL;
*r_bp = NULL;
LISTBASE_FOREACH (Nurb *, nu1, editnurb) {
if (nu1->type == CU_BEZIER) {
bezt1 = nu1->bezt;
a = nu1->pntsu;
while (a--) {
if (BEZT_ISSEL_ANY_HIDDENHANDLES(v3d, bezt1)) {
if (!ELEM(*r_nu, NULL, nu1)) {
*r_nu = NULL;
*r_bp = NULL;
*r_bezt = NULL;
return;
}
if (*r_bezt || *r_bp) {
*r_bp = NULL;
*r_bezt = NULL;
}
else {
*r_bezt = bezt1;
*r_nu = nu1;
}
}
bezt1++;
}
}
else {
bp1 = nu1->bp;
a = nu1->pntsu * nu1->pntsv;
while (a--) {
if (bp1->f1 & SELECT) {
if (!ELEM(*r_nu, NULL, nu1)) {
*r_bp = NULL;
*r_bezt = NULL;
*r_nu = NULL;
return;
}
if (*r_bezt || *r_bp) {
*r_bp = NULL;
*r_bezt = NULL;
}
else {
*r_bp = bp1;
*r_nu = nu1;
}
}
bp1++;
}
}
}
}
bool ED_curve_active_center(Curve *cu, float center[3])
{
Nurb *nu = NULL;
void *vert = NULL;
if (!BKE_curve_nurb_vert_active_get(cu, &nu, &vert)) {
return false;
}
if (nu->type == CU_BEZIER) {
BezTriple *bezt = (BezTriple *)vert;
copy_v3_v3(center, bezt->vec[1]);
}
else {
BPoint *bp = (BPoint *)vert;
copy_v3_v3(center, bp->vec);
}
return true;
}
/** \} */
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