diff options
Diffstat (limited to 'source/blender/editors/space_view3d/view3d_view.c')
| -rw-r--r-- | source/blender/editors/space_view3d/view3d_view.c | 10 |
1 files changed, 7 insertions, 3 deletions
diff --git a/source/blender/editors/space_view3d/view3d_view.c b/source/blender/editors/space_view3d/view3d_view.c index b681f15433c..b2bc071122f 100644 --- a/source/blender/editors/space_view3d/view3d_view.c +++ b/source/blender/editors/space_view3d/view3d_view.c @@ -588,11 +588,13 @@ void viewvector(RegionView3D *rv3d, float coord[3], float vec[3]) normalize_v3(vec); } -void initgrabz(RegionView3D *rv3d, float x, float y, float z) +int initgrabz(RegionView3D *rv3d, float x, float y, float z) { - if(rv3d==NULL) return; + int flip= FALSE; + if(rv3d==NULL) return flip; rv3d->zfac= rv3d->persmat[0][3]*x+ rv3d->persmat[1][3]*y+ rv3d->persmat[2][3]*z+ rv3d->persmat[3][3]; - + if (rv3d->zfac < 0.0f) + flip= TRUE; /* if x,y,z is exactly the viewport offset, zfac is 0 and we don't want that * (accounting for near zero values) * */ @@ -605,6 +607,8 @@ void initgrabz(RegionView3D *rv3d, float x, float y, float z) // -- Aligorith, 2009Aug31 //if (rv3d->zfac < 0.0f) rv3d->zfac = 1.0f; if (rv3d->zfac < 0.0f) rv3d->zfac= -rv3d->zfac; + + return flip; } /* always call initgrabz */ |