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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_string.h"
#include "BLI_task.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 (Rotation - Trackball) Element
* \{ */
/**
* \note Small arrays / data-structures should be stored copied for faster memory access.
*/
struct TransDataArgs_Trackball {
const TransInfo *t;
const TransDataContainer *tc;
const float axis[3];
const float angle;
float mat_final[3][3];
};
static void transdata_elem_trackball(const TransInfo *t,
const TransDataContainer *tc,
TransData *td,
const float axis[3],
const float angle,
const float mat_final[3][3])
{
float mat_buf[3][3];
const float(*mat)[3] = mat_final;
if (t->flag & T_PROP_EDIT) {
axis_angle_normalized_to_mat3(mat_buf, axis, td->factor * angle);
mat = mat_buf;
}
ElementRotation(t, tc, td, mat, t->around);
}
static void transdata_elem_trackball_fn(void *__restrict iter_data_v,
const int iter,
const TaskParallelTLS *__restrict UNUSED(tls))
{
struct TransDataArgs_Trackball *data = iter_data_v;
TransData *td = &data->tc->data[iter];
if (td->flag & TD_SKIP) {
return;
}
transdata_elem_trackball(data->t, data->tc, td, data->axis, data->angle, data->mat_final);
}
/** \} */
/* -------------------------------------------------------------------- */
/** \name Transform (Rotation - Trackball)
* \{ */
static void applyTrackballValue_calc_axis_angle(const TransInfo *t,
const float phi[2],
float r_axis[3],
float *r_angle)
{
float axis1[3], axis2[3];
normalize_v3_v3(axis1, t->persinv[0]);
normalize_v3_v3(axis2, t->persinv[1]);
mul_v3_v3fl(r_axis, axis1, phi[0]);
madd_v3_v3fl(r_axis, axis2, phi[1]);
*r_angle = normalize_v3(r_axis);
}
static void applyTrackballValue(TransInfo *t, const float axis[3], const float angle)
{
float mat_final[3][3];
int i;
axis_angle_normalized_to_mat3(mat_final, axis, angle);
FOREACH_TRANS_DATA_CONTAINER (t, tc) {
if (tc->data_len < TRANSDATA_THREAD_LIMIT) {
TransData *td = tc->data;
for (i = 0; i < tc->data_len; i++, td++) {
if (td->flag & TD_SKIP) {
continue;
}
transdata_elem_trackball(t, tc, td, axis, angle, mat_final);
}
}
else {
struct TransDataArgs_Trackball data = {
.t = t,
.tc = tc,
.axis = {UNPACK3(axis)},
.angle = angle,
};
copy_m3_m3(data.mat_final, mat_final);
TaskParallelSettings settings;
BLI_parallel_range_settings_defaults(&settings);
BLI_task_parallel_range(0, tc->data_len, &data, transdata_elem_trackball_fn, &settings);
}
}
}
static void applyTrackball(TransInfo *t, const int UNUSED(mval[2]))
{
char str[UI_MAX_DRAW_STR];
size_t ofs = 0;
float phi[2];
copy_v2_v2(phi, t->values);
transform_snap_increment(t, phi);
applyNumInput(&t->num, phi);
copy_v2_v2(t->values_final, phi);
if (hasNumInput(&t->num)) {
char c[NUM_STR_REP_LEN * 2];
outputNumInput(&(t->num), c, &t->scene->unit);
ofs += BLI_snprintf_rlen(str + ofs,
sizeof(str) - ofs,
TIP_("Trackball: %s %s %s"),
&c[0],
&c[NUM_STR_REP_LEN],
t->proptext);
}
else {
ofs += BLI_snprintf_rlen(str + ofs,
sizeof(str) - ofs,
TIP_("Trackball: %.2f %.2f %s"),
RAD2DEGF(phi[0]),
RAD2DEGF(phi[1]),
t->proptext);
}
if (t->flag & T_PROP_EDIT_ALL) {
ofs += BLI_snprintf_rlen(
str + ofs, sizeof(str) - ofs, TIP_(" Proportional size: %.2f"), t->prop_size);
}
float axis_final[3], angle_final;
applyTrackballValue_calc_axis_angle(t, phi, axis_final, &angle_final);
applyTrackballValue(t, axis_final, angle_final);
recalcData(t);
ED_area_status_text(t->area, str);
}
static void applyTrackballMatrix(TransInfo *t, float mat_xform[4][4])
{
const float phi[2] = {UNPACK2(t->values_final)};
float axis_final[3], angle_final;
applyTrackballValue_calc_axis_angle(t, phi, axis_final, &angle_final);
float mat3[3][3], mat4[4][4];
axis_angle_normalized_to_mat3(mat3, axis_final, angle_final);
copy_m4_m3(mat4, mat3);
transform_pivot_set_m4(mat4, t->center_global);
mul_m4_m4m4(mat_xform, mat4, mat_xform);
}
void initTrackball(TransInfo *t)
{
t->mode = TFM_TRACKBALL;
t->transform = applyTrackball;
t->transform_matrix = applyTrackballMatrix;
initMouseInputMode(t, &t->mouse, INPUT_TRACKBALL);
t->idx_max = 1;
t->num.idx_max = 1;
t->snap[0] = DEG2RAD(5.0);
t->snap[1] = DEG2RAD(1.0);
copy_v3_fl(t->num.val_inc, t->snap[1]);
t->num.unit_sys = t->scene->unit.system;
t->num.unit_use_radians = (t->scene->unit.system_rotation == USER_UNIT_ROT_RADIANS);
t->num.unit_type[0] = B_UNIT_ROTATION;
t->num.unit_type[1] = B_UNIT_ROTATION;
t->flag |= T_NO_CONSTRAINT;
}
/** \} */
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