static int slide_point_modal(bContext *C, wmOperator *op, const wmEvent *event)
{
SlidePointData *data = (SlidePointData *)op->customdata;
BezTriple *bezt = &data->point->bezt;
float co[2], dco[2];
switch (event->type) {
case LEFTALTKEY:
case RIGHTALTKEY:
case LEFTSHIFTKEY:
case RIGHTSHIFTKEY:
if (ELEM(event->type, LEFTALTKEY, RIGHTALTKEY)) {
if (data->action == SLIDE_ACTION_FEATHER)
data->overall_feather = (event->val == KM_PRESS);
else
data->curvature_only = (event->val == KM_PRESS);
}
if (ELEM(event->type, LEFTSHIFTKEY, RIGHTSHIFTKEY))
data->accurate = (event->val == KM_PRESS);
/* fall-through */ /* update CV position */
case MOUSEMOVE:
{
ScrArea *sa = CTX_wm_area(C);
ARegion *ar = CTX_wm_region(C);
ED_mask_mouse_pos(sa, ar, event->mval, co);
sub_v2_v2v2(dco, co, data->co);
if (data->action == SLIDE_ACTION_HANDLE) {
float delta[2], offco[2];
sub_v2_v2v2(delta, data->handle, data->co);
sub_v2_v2v2(offco, co, data->co);
if (data->accurate)
mul_v2_fl(offco, 0.2f);
add_v2_v2(offco, data->co);
add_v2_v2(offco, delta);
BKE_mask_point_set_handle(data->point, offco, data->curvature_only, data->handle, data->vec);
}
else if (data->action == SLIDE_ACTION_POINT) {
float delta[2];
copy_v2_v2(delta, dco);
if (data->accurate)
mul_v2_fl(delta, 0.2f);
add_v2_v2v2(bezt->vec[0], data->vec[0], delta);
add_v2_v2v2(bezt->vec[1], data->vec[1], delta);
add_v2_v2v2(bezt->vec[2], data->vec[2], delta);
}
else if (data->action == SLIDE_ACTION_FEATHER) {
float vec[2], no[2], p[2], c[2], w, offco[2];
float *weight = NULL;
float weight_scalar = 1.0f;
int overall_feather = data->overall_feather || data->initial_feather;
add_v2_v2v2(offco, data->feather, dco);
if (data->uw) {
/* project on both sides and find the closest one,
* prevents flickering when projecting onto both sides can happen */
const float u_pos = BKE_mask_spline_project_co(data->spline, data->point,
data->uw->u, offco, MASK_PROJ_NEG);
const float u_neg = BKE_mask_spline_project_co(data->spline, data->point,
data->uw->u, offco, MASK_PROJ_POS);
float dist_pos = FLT_MAX;
float dist_neg = FLT_MAX;
float co_pos[2];
float co_neg[2];
float u;
if (u_pos > 0.0f && u_pos < 1.0f) {
BKE_mask_point_segment_co(data->spline, data->point, u_pos, co_pos);
dist_pos = len_squared_v2v2(offco, co_pos);
}
if (u_neg > 0.0f && u_neg < 1.0f) {
BKE_mask_point_segment_co(data->spline, data->point, u_neg, co_neg);
dist_neg = len_squared_v2v2(offco, co_neg);
}
u = dist_pos < dist_neg ? u_pos : u_neg;
if (u > 0.0f && u < 1.0f) {
data->uw->u = u;
data->uw = BKE_mask_point_sort_uw(data->point, data->uw);
weight = &data->uw->w;
weight_scalar = BKE_mask_point_weight_scalar(data->spline, data->point, u);
if (weight_scalar != 0.0f) {
weight_scalar = 1.0f / weight_scalar;
}
BKE_mask_point_normal(data->spline, data->point, data->uw->u, no);
BKE_mask_point_segment_co(data->spline, data->point, data->uw->u, p);
}
}
else {
weight = &bezt->weight;
/* weight_scalar = 1.0f; keep as is */
copy_v2_v2(no, data->no);
copy_v2_v2(p, bezt->vec[1]);
}
if (weight) {
sub_v2_v2v2(c, offco, p);
project_v2_v2v2(vec, c, no);
w = len_v2(vec);
if (overall_feather) {
float delta;
if (dot_v2v2(no, vec) <= 0.0f)
w = -w;
delta = w - data->weight * data->weight_scalar;
if (data->orig_spline == NULL) {
/* restore weight for currently sliding point, so orig_spline would be created
* with original weights used
*/
*weight = data->weight;
data->orig_spline = BKE_mask_spline_copy(data->spline);
}
slide_point_delta_all_feather(data, delta);
}
else {
if (dot_v2v2(no, vec) <= 0.0f)
w = 0.0f;
if (data->orig_spline) {
/* restore possible overall feather changes */
slide_point_restore_spline(data);
BKE_mask_spline_free(data->orig_spline);
data->orig_spline = NULL;
}
if (weight_scalar != 0.0f) {
*weight = w * weight_scalar;
}
}
}
}
WM_event_add_notifier(C, NC_MASK | NA_EDITED, data->mask);
DAG_id_tag_update(&data->mask->id, 0);
break;
}
case LEFTMOUSE:
if (event->val == KM_RELEASE) {
Scene *scene = CTX_data_scene(C);
/* dont key sliding feather uw's */
if ((data->action == SLIDE_ACTION_FEATHER && data->uw) == FALSE) {
if (IS_AUTOKEY_ON(scene)) {
ED_mask_layer_shape_auto_key(data->masklay, CFRA);
}
}
WM_event_add_notifier(C, NC_MASK | NA_EDITED, data->mask);
DAG_id_tag_update(&data->mask->id, 0);
free_slide_point_data(op->customdata); /* keep this last! */
return OPERATOR_FINISHED;
}
break;
case ESCKEY:
cancel_slide_point(op->customdata);
WM_event_add_notifier(C, NC_MASK | NA_EDITED, data->mask);
DAG_id_tag_update(&data->mask->id, 0);
free_slide_point_data(op->customdata); /* keep this last! */
return OPERATOR_CANCELLED;
}
return OPERATOR_RUNNING_MODAL;
}
void project_plane_v2_v2v2(float c[2], const float v[2], const float v_plane[2])
{
float delta[2];
project_v2_v2v2(delta, v, v_plane);
sub_v2_v2v2(c, v, delta);
}
