/* 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);
}
}
/* the arguments are the desired situation */
void smooth_view(bContext *C, View3D *v3d, ARegion *ar, Object *oldcamera, Object *camera,
float *ofs, float *quat, float *dist, float *lens)
{
wmWindowManager *wm= CTX_wm_manager(C);
wmWindow *win= CTX_wm_window(C);
ScrArea *sa= CTX_wm_area(C);
RegionView3D *rv3d= ar->regiondata;
struct SmoothViewStore sms= {0};
short ok= FALSE;
/* initialize sms */
copy_v3_v3(sms.new_ofs, rv3d->ofs);
copy_qt_qt(sms.new_quat, rv3d->viewquat);
sms.new_dist= rv3d->dist;
sms.new_lens= v3d->lens;
sms.to_camera= 0;
/* 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 infact
* there is an active camera which is locked to the view.
*
* In the case where smooth view is moving _to_ a camera we dont 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.new_ofs, ofs);
if(quat) copy_qt_qt(sms.new_quat, quat);
if(dist) sms.new_dist= *dist;
if(lens) sms.new_lens= *lens;
if (camera) {
ED_view3d_from_object(camera, sms.new_ofs, sms.new_quat, &sms.new_dist, &sms.new_lens);
sms.to_camera= 1; /* restore view3d values in end */
}
if (C && U.smooth_viewtx) {
int changed = 0; /* zero means no difference */
if (oldcamera != camera)
changed = 1;
else if (sms.new_dist != rv3d->dist)
changed = 1;
else if (sms.new_lens != v3d->lens)
changed = 1;
else if (!equals_v3v3(sms.new_ofs, rv3d->ofs))
changed = 1;
else if (!equals_v4v4(sms.new_quat, rv3d->viewquat))
changed = 1;
/* The new view is different from the old one
* so animate the view */
if (changed) {
/* original values */
if (oldcamera) {
sms.orig_dist= rv3d->dist; // below function does weird stuff with it...
ED_view3d_from_object(oldcamera, sms.orig_ofs, sms.orig_quat, &sms.orig_dist, &sms.orig_lens);
}
else {
copy_v3_v3(sms.orig_ofs, rv3d->ofs);
copy_qt_qt(sms.orig_quat, rv3d->viewquat);
sms.orig_dist= rv3d->dist;
sms.orig_lens= v3d->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 */
sms.orig_view= rv3d->sms ? rv3d->sms->orig_view : rv3d->view;
rv3d->view= RV3D_VIEW_USER;
}
sms.time_allowed= (double)U.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.new_quat);
invert_qt_qt(q2, sms.orig_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) rv3d->persp= RV3D_PERSP;
rv3d->rflag |= RV3D_NAVIGATING;
/* keep track of running timer! */
if(rv3d->sms==NULL)
rv3d->sms= MEM_mallocN(sizeof(struct SmoothViewStore), "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==0) {
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;
}
if(rv3d->viewlock & RV3D_BOXVIEW)
view3d_boxview_copy(sa, ar);
ED_region_tag_redraw(ar);
}
}
