diff options
author | Campbell Barton <ideasman42@gmail.com> | 2018-09-20 04:21:34 +0300 |
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committer | Campbell Barton <ideasman42@gmail.com> | 2018-09-20 04:24:13 +0300 |
commit | 470407ec3bac11ae5a5c6174a6e9630caa1a42f7 (patch) | |
tree | 37d0e26c090702d8d8f9057ab32afdd6e973004c /source/blender/editors | |
parent | 0acc1b4c6c42a4f3b056b805bdc3c25f0666954d (diff) |
3D View: point-on-plane from screen location utility
Diffstat (limited to 'source/blender/editors')
-rw-r--r-- | source/blender/editors/include/ED_view3d.h | 8 | ||||
-rw-r--r-- | source/blender/editors/space_view3d/view3d_project.c | 25 |
2 files changed, 33 insertions, 0 deletions
diff --git a/source/blender/editors/include/ED_view3d.h b/source/blender/editors/include/ED_view3d.h index 82411ba7401..781fd8eaac0 100644 --- a/source/blender/editors/include/ED_view3d.h +++ b/source/blender/editors/include/ED_view3d.h @@ -236,6 +236,14 @@ void ED_view3d_win_to_3d_int( const struct View3D *v3d, const struct ARegion *ar, const float depth_pt[3], const int mval[2], float r_out[3]); +bool ED_view3d_win_to_3d_on_plane( + const struct ARegion *ar, + const float plane[4], const float mval[2], + float r_out[3]); +bool ED_view3d_win_to_3d_on_plane_int( + const struct ARegion *ar, + const float plane[4], const int mval[2], + float r_out[3]); void ED_view3d_win_to_delta(const struct ARegion *ar, const float mval[2], float out[3], const float zfac); void ED_view3d_win_to_origin(const struct ARegion *ar, const float mval[2], float out[3]); void ED_view3d_win_to_vector(const struct ARegion *ar, const float mval[2], float out[3]); diff --git a/source/blender/editors/space_view3d/view3d_project.c b/source/blender/editors/space_view3d/view3d_project.c index 767df04c0b0..d5b6c60563f 100644 --- a/source/blender/editors/space_view3d/view3d_project.c +++ b/source/blender/editors/space_view3d/view3d_project.c @@ -537,6 +537,31 @@ void ED_view3d_win_to_3d_int( ED_view3d_win_to_3d(v3d, ar, depth_pt, mval_fl, r_out); } +bool ED_view3d_win_to_3d_on_plane( + const ARegion *ar, + const float plane[4], const float mval[2], + float r_out[3]) +{ + float ray_co[3], ray_no[3]; + ED_view3d_win_to_origin(ar, mval, ray_co); + ED_view3d_win_to_vector(ar, mval, ray_no); + float lambda; + if (isect_ray_plane_v3(ray_co, ray_no, plane, &lambda, false)) { + madd_v3_v3v3fl(r_out, ray_co, ray_no, lambda); + return true; + } + return false; +} + +bool ED_view3d_win_to_3d_on_plane_int( + const ARegion *ar, + const float plane[4], const int mval[2], + float r_out[3]) +{ + const float mval_fl[2] = {mval[0], mval[1]}; + return ED_view3d_win_to_3d_on_plane(ar, plane, mval_fl, r_out); +} + /** * Calculate a 3d difference vector from 2d window offset. * note that ED_view3d_calc_zfac() must be called first to determine |