diff options
Diffstat (limited to 'source/blender/editors/space_view3d/view3d_utils.c')
-rw-r--r-- | source/blender/editors/space_view3d/view3d_utils.c | 33 |
1 files changed, 33 insertions, 0 deletions
diff --git a/source/blender/editors/space_view3d/view3d_utils.c b/source/blender/editors/space_view3d/view3d_utils.c index 8a219cd96d1..3e788f2d643 100644 --- a/source/blender/editors/space_view3d/view3d_utils.c +++ b/source/blender/editors/space_view3d/view3d_utils.c @@ -510,6 +510,39 @@ bool ED_view3d_persp_ensure(const Depsgraph *depsgraph, View3D *v3d, ARegion *re /** \} */ /* -------------------------------------------------------------------- */ +/** \name Camera View Utilities + * + * Utilities for manipulating the camera-view. + * \{ */ + +bool ED_view3d_camera_view_zoom_scale(RegionView3D *rv3d, const float scale) +{ + const float camzoom_init = rv3d->camzoom; + float zoomfac = BKE_screen_view3d_zoom_to_fac(rv3d->camzoom); + /* Clamp both before and after conversion to prevent NAN on negative values. */ + + zoomfac = zoomfac * scale; + CLAMP(zoomfac, RV3D_CAMZOOM_MIN_FACTOR, RV3D_CAMZOOM_MAX_FACTOR); + rv3d->camzoom = BKE_screen_view3d_zoom_from_fac(zoomfac); + CLAMP(rv3d->camzoom, RV3D_CAMZOOM_MIN, RV3D_CAMZOOM_MAX); + return (rv3d->camzoom != camzoom_init); +} + +bool ED_view3d_camera_view_pan(ARegion *region, const float event_ofs[2]) +{ + RegionView3D *rv3d = region->regiondata; + const float camdxy_init[2] = {rv3d->camdx, rv3d->camdy}; + const float zoomfac = BKE_screen_view3d_zoom_to_fac(rv3d->camzoom) * 2.0f; + rv3d->camdx += event_ofs[0] / (region->winx * zoomfac); + rv3d->camdy += event_ofs[1] / (region->winy * zoomfac); + CLAMP(rv3d->camdx, -1.0f, 1.0f); + CLAMP(rv3d->camdy, -1.0f, 1.0f); + return (camdxy_init[0] != rv3d->camdx) || (camdxy_init[1] != rv3d->camdy); +} + +/** \} */ + +/* -------------------------------------------------------------------- */ /** \name Camera Lock API * * Lock the camera to the 3D Viewport, allowing view manipulation to transform the camera. |