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/* SPDX-License-Identifier: GPL-2.0-or-later
* Copyright 2001-2002 NaN Holding BV. All rights reserved. */
/** \file
* \ingroup edtransform
*/
#include <stdlib.h>
#include "BLI_math.h"
#include "BLI_math_bits.h"
#include "BLI_string.h"
#include "BKE_context.h"
#include "BKE_unit.h"
#include "ED_screen.h"
#include "UI_interface.h"
#include "BLT_translation.h"
#include "transform.h"
#include "transform_convert.h"
#include "transform_snap.h"
#include "transform_mode.h"
/* -------------------------------------------------------------------- */
/** \name Transform (Curve Shrink/Fatten)
* \{ */
static void applyCurveShrinkFatten(TransInfo *t, const int UNUSED(mval[2]))
{
float ratio;
int i;
char str[UI_MAX_DRAW_STR];
ratio = t->values[0] + t->values_modal_offset[0];
transform_snap_increment(t, &ratio);
applyNumInput(&t->num, &ratio);
t->values_final[0] = ratio;
/* header print for NumInput */
if (hasNumInput(&t->num)) {
char c[NUM_STR_REP_LEN];
outputNumInput(&(t->num), c, &t->scene->unit);
BLI_snprintf(str, sizeof(str), TIP_("Shrink/Fatten: %s"), c);
}
else {
BLI_snprintf(str, sizeof(str), TIP_("Shrink/Fatten: %3f"), ratio);
}
FOREACH_TRANS_DATA_CONTAINER (t, tc) {
TransData *td = tc->data;
for (i = 0; i < tc->data_len; i++, td++) {
if (td->flag & TD_SKIP) {
continue;
}
if (td->val) {
if (td->ival == 0.0f && ratio > 1.0f) {
/* Allow Shrink/Fatten for zero radius. */
*td->val = (ratio - 1.0f) * uint_as_float(POINTER_AS_UINT(t->custom.mode.data));
}
else {
*td->val = td->ival * ratio;
}
/* apply PET */
*td->val = interpf(*td->val, td->ival, td->factor);
CLAMP_MIN(*td->val, 0.0f);
}
}
}
recalcData(t);
ED_area_status_text(t->area, str);
}
void initCurveShrinkFatten(TransInfo *t)
{
t->mode = TFM_CURVE_SHRINKFATTEN;
t->transform = applyCurveShrinkFatten;
initMouseInputMode(t, &t->mouse, INPUT_SPRING);
t->idx_max = 0;
t->num.idx_max = 0;
t->snap[0] = 0.1f;
t->snap[1] = t->snap[0] * 0.1f;
copy_v3_fl(t->num.val_inc, t->snap[0]);
t->num.unit_sys = t->scene->unit.system;
t->num.unit_type[0] = B_UNIT_NONE;
t->flag |= T_NO_CONSTRAINT;
float scale_factor = 0.0f;
if (((t->spacetype == SPACE_VIEW3D) && (t->region->regiontype == RGN_TYPE_WINDOW) &&
(t->data_len_all == 1)) ||
(t->data_len_all == 3 && TRANS_DATA_CONTAINER_FIRST_OK(t)->data[0].val == NULL)) {
/* For cases where only one point on the curve is being transformed and the radius of that
* point is zero, use the factor to multiply the offset of the ratio and allow scaling.
* Note that for bezier curves, 3 TransData equals 1 point in most cases. */
RegionView3D *rv3d = t->region->regiondata;
scale_factor = rv3d->pixsize * t->mouse.factor * t->zfac;
}
t->custom.mode.data = POINTER_FROM_UINT(float_as_uint(scale_factor));
}
/** \} */
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