/* the arguments are the desired situation */
void ED_view3d_smooth_view_ex(
/* avoid passing in the context */
wmWindowManager *wm, wmWindow *win, ScrArea *sa,
View3D *v3d, ARegion *ar, Object *oldcamera, Object *camera,
const float *ofs, const float *quat, const float *dist, const float *lens,
const int smooth_viewtx)
{
RegionView3D *rv3d = ar->regiondata;
struct SmoothView3DStore sms = {{0}};
bool ok = false;
/* initialize sms */
view3d_smooth_view_state_backup(&sms.dst, v3d, rv3d);
view3d_smooth_view_state_backup(&sms.src, v3d, rv3d);
/* if smoothview runs multiple times... */
if (rv3d->sms == NULL) {
view3d_smooth_view_state_backup(&sms.org, v3d, rv3d);
sms.org_view = rv3d->view;
}
else {
sms.org = rv3d->sms->org;
sms.org_view = rv3d->sms->org_view;
}
/* sms.to_camera = false; */ /* initizlized to zero anyway */
/* note on camera locking, this is a little confusing but works ok.
* we may be changing the view 'as if' there is no active camera, but in fact
* there is an active camera which is locked to the view.
*
* In the case where smooth view is moving _to_ a camera we don't want that
* camera to be moved or changed, so only when the camera is not being set should
* we allow camera option locking to initialize the view settings from the camera.
*/
if (camera == NULL && oldcamera == NULL) {
ED_view3d_camera_lock_init(v3d, rv3d);
}
/* store the options we want to end with */
if (ofs) copy_v3_v3(sms.dst.ofs, ofs);
if (quat) copy_qt_qt(sms.dst.quat, quat);
if (dist) sms.dst.dist = *dist;
if (lens) sms.dst.lens = *lens;
if (camera) {
sms.dst.dist = ED_view3d_offset_distance(camera->obmat, ofs, VIEW3D_DIST_FALLBACK);
ED_view3d_from_object(camera, sms.dst.ofs, sms.dst.quat, &sms.dst.dist, &sms.dst.lens);
sms.to_camera = true; /* restore view3d values in end */
}
/* skip smooth viewing for render engine draw */
if (smooth_viewtx && v3d->drawtype != OB_RENDER) {
bool changed = false; /* zero means no difference */
if (oldcamera != camera)
changed = true;
else if (sms.dst.dist != rv3d->dist)
changed = true;
else if (sms.dst.lens != v3d->lens)
changed = true;
else if (!equals_v3v3(sms.dst.ofs, rv3d->ofs))
changed = true;
else if (!equals_v4v4(sms.dst.quat, rv3d->viewquat))
changed = true;
/* The new view is different from the old one
* so animate the view */
if (changed) {
/* original values */
if (oldcamera) {
sms.src.dist = ED_view3d_offset_distance(oldcamera->obmat, rv3d->ofs, 0.0f);
/* this */
ED_view3d_from_object(oldcamera, sms.src.ofs, sms.src.quat, &sms.src.dist, &sms.src.lens);
}
/* grid draw as floor */
if ((rv3d->viewlock & RV3D_LOCKED) == 0) {
/* use existing if exists, means multiple calls to smooth view wont loose the original 'view' setting */
rv3d->view = RV3D_VIEW_USER;
}
sms.time_allowed = (double)smooth_viewtx / 1000.0;
/* if this is view rotation only
* we can decrease the time allowed by
* the angle between quats
* this means small rotations wont lag */
if (quat && !ofs && !dist) {
float vec1[3] = {0, 0, 1}, vec2[3] = {0, 0, 1};
float q1[4], q2[4];
invert_qt_qt(q1, sms.dst.quat);
invert_qt_qt(q2, sms.src.quat);
mul_qt_v3(q1, vec1);
mul_qt_v3(q2, vec2);
/* scale the time allowed by the rotation */
sms.time_allowed *= (double)angle_v3v3(vec1, vec2) / M_PI; /* 180deg == 1.0 */
}
/* ensure it shows correct */
if (sms.to_camera) {
/* use ortho if we move from an ortho view to an ortho camera */
rv3d->persp = (((rv3d->is_persp == false) &&
(camera->type == OB_CAMERA) &&
(((Camera *)camera->data)->type == CAM_ORTHO)) ?
RV3D_ORTHO : RV3D_PERSP);
}
rv3d->rflag |= RV3D_NAVIGATING;
/* not essential but in some cases the caller will tag the area for redraw,
* and in that case we can get a flicker of the 'org' user view but we want to see 'src' */
view3d_smooth_view_state_restore(&sms.src, v3d, rv3d);
/* keep track of running timer! */
if (rv3d->sms == NULL) {
rv3d->sms = MEM_mallocN(sizeof(struct SmoothView3DStore), "smoothview v3d");
}
*rv3d->sms = sms;
if (rv3d->smooth_timer) {
WM_event_remove_timer(wm, win, rv3d->smooth_timer);
}
/* TIMER1 is hardcoded in keymap */
rv3d->smooth_timer = WM_event_add_timer(wm, win, TIMER1, 1.0 / 100.0); /* max 30 frs/sec */
ok = true;
}
}
/* if we get here nothing happens */
if (ok == false) {
if (sms.to_camera == false) {
copy_v3_v3(rv3d->ofs, sms.dst.ofs);
copy_qt_qt(rv3d->viewquat, sms.dst.quat);
rv3d->dist = sms.dst.dist;
v3d->lens = sms.dst.lens;
ED_view3d_camera_lock_sync(v3d, rv3d);
}
if (rv3d->viewlock & RV3D_BOXVIEW) {
view3d_boxview_copy(sa, ar);
}
ED_region_tag_redraw(ar);
}
}
/* only meant for timer usage */
static int view3d_smoothview_invoke(bContext *C, wmOperator *UNUSED(op), const wmEvent *event)
{
View3D *v3d = CTX_wm_view3d(C);
RegionView3D *rv3d = CTX_wm_region_view3d(C);
struct SmoothView3DStore *sms = rv3d->sms;
float step, step_inv;
/* escape if not our timer */
if (rv3d->smooth_timer == NULL || rv3d->smooth_timer != event->customdata)
return OPERATOR_PASS_THROUGH;
if (sms->time_allowed != 0.0)
step = (float)((rv3d->smooth_timer->duration) / sms->time_allowed);
else
step = 1.0f;
/* end timer */
if (step >= 1.0f) {
/* if we went to camera, store the original */
if (sms->to_camera) {
rv3d->persp = RV3D_CAMOB;
view3d_smooth_view_state_restore(&sms->org, v3d, rv3d);
}
else {
view3d_smooth_view_state_restore(&sms->dst, v3d, rv3d);
ED_view3d_camera_lock_sync(v3d, rv3d);
ED_view3d_camera_lock_autokey(v3d, rv3d, C, true, true);
}
if ((rv3d->viewlock & RV3D_LOCKED) == 0) {
rv3d->view = sms->org_view;
}
MEM_freeN(rv3d->sms);
rv3d->sms = NULL;
WM_event_remove_timer(CTX_wm_manager(C), CTX_wm_window(C), rv3d->smooth_timer);
rv3d->smooth_timer = NULL;
rv3d->rflag &= ~RV3D_NAVIGATING;
}
else {
/* ease in/out */
step = (3.0f * step * step - 2.0f * step * step * step);
step_inv = 1.0f - step;
interp_v3_v3v3(rv3d->ofs, sms->src.ofs, sms->dst.ofs, step);
interp_qt_qtqt(rv3d->viewquat, sms->src.quat, sms->dst.quat, step);
rv3d->dist = sms->dst.dist * step + sms->src.dist * step_inv;
v3d->lens = sms->dst.lens * step + sms->src.lens * step_inv;
ED_view3d_camera_lock_sync(v3d, rv3d);
if (ED_screen_animation_playing(CTX_wm_manager(C))) {
ED_view3d_camera_lock_autokey(v3d, rv3d, C, true, true);
}
}
if (rv3d->viewlock & RV3D_BOXVIEW)
view3d_boxview_copy(CTX_wm_area(C), CTX_wm_region(C));
/* note: this doesn't work right because the v3d->lens is now used in ortho mode r51636,
* when switching camera in quad-view the other ortho views would zoom & reset.
*
* For now only redraw all regions when smoothview finishes.
*/
if (step >= 1.0f) {
WM_event_add_notifier(C, NC_SPACE | ND_SPACE_VIEW3D, v3d);
}
else {
ED_region_tag_redraw(CTX_wm_region(C));
}
return OPERATOR_FINISHED;
}
/* only meant for timer usage */
static int view3d_smoothview_invoke(bContext *C, wmOperator *UNUSED(op), wmEvent *event)
{
View3D *v3d = CTX_wm_view3d(C);
RegionView3D *rv3d= CTX_wm_region_view3d(C);
struct SmoothViewStore *sms= rv3d->sms;
float step, step_inv;
/* escape if not our timer */
if(rv3d->smooth_timer==NULL || rv3d->smooth_timer!=event->customdata)
return OPERATOR_PASS_THROUGH;
if(sms->time_allowed != 0.0)
step = (float)((rv3d->smooth_timer->duration)/sms->time_allowed);
else
step = 1.0f;
/* end timer */
if(step >= 1.0f) {
/* if we went to camera, store the original */
if(sms->to_camera) {
rv3d->persp= RV3D_CAMOB;
copy_v3_v3(rv3d->ofs, sms->orig_ofs);
copy_qt_qt(rv3d->viewquat, sms->orig_quat);
rv3d->dist = sms->orig_dist;
v3d->lens = sms->orig_lens;
}
else {
copy_v3_v3(rv3d->ofs, sms->new_ofs);
copy_qt_qt(rv3d->viewquat, sms->new_quat);
rv3d->dist = sms->new_dist;
v3d->lens = sms->new_lens;
ED_view3d_camera_lock_sync(v3d, rv3d);
}
if((rv3d->viewlock & RV3D_LOCKED)==0) {
rv3d->view= sms->orig_view;
}
MEM_freeN(rv3d->sms);
rv3d->sms= NULL;
WM_event_remove_timer(CTX_wm_manager(C), CTX_wm_window(C), rv3d->smooth_timer);
rv3d->smooth_timer= NULL;
rv3d->rflag &= ~RV3D_NAVIGATING;
}
else {
int i;
/* ease in/out */
if (step < 0.5f) step = (float)pow(step*2.0f, 2.0)/2.0f;
else step = (float)1.0f-(powf(2.0f*(1.0f-step),2.0f)/2.0f);
step_inv = 1.0f-step;
for (i=0; i<3; i++)
rv3d->ofs[i] = sms->new_ofs[i] * step + sms->orig_ofs[i]*step_inv;
interp_qt_qtqt(rv3d->viewquat, sms->orig_quat, sms->new_quat, step);
rv3d->dist = sms->new_dist * step + sms->orig_dist*step_inv;
v3d->lens = sms->new_lens * step + sms->orig_lens*step_inv;
ED_view3d_camera_lock_sync(v3d, rv3d);
}
if(rv3d->viewlock & RV3D_BOXVIEW)
view3d_boxview_copy(CTX_wm_area(C), CTX_wm_region(C));
WM_event_add_notifier(C, NC_SPACE|ND_SPACE_VIEW3D, v3d);
return OPERATOR_FINISHED;
}