From c9df0ea1474781e97f9e5fdaa84c6643f14cd889 Mon Sep 17 00:00:00 2001 From: Campbell Barton Date: Thu, 20 Sep 2018 12:00:02 +1000 Subject: 3D View: add a simple un-clipped win_to_ray --- source/blender/editors/space_view3d/view3d_project.c | 18 ++++++++++++++++++ 1 file changed, 18 insertions(+) (limited to 'source/blender/editors/space_view3d/view3d_project.c') diff --git a/source/blender/editors/space_view3d/view3d_project.c b/source/blender/editors/space_view3d/view3d_project.c index 63057e01f20..fa166cbaaab 100644 --- a/source/blender/editors/space_view3d/view3d_project.c +++ b/source/blender/editors/space_view3d/view3d_project.c @@ -406,6 +406,24 @@ bool ED_view3d_win_to_ray_clipped( return ED_view3d_win_to_ray_clipped_ex(ar, v3d, mval, NULL, r_ray_normal, r_ray_start, do_clip_planes); } +/** + * Calculate a 3d viewpoint and direction vector from 2d window coordinates. + * This ray_start is located at the viewpoint, ray_normal is the direction towards mval. + * \param ar The region (used for the window width and height). + * \param mval The area relative 2d location (such as event->mval, converted into float[2]). + * \param r_ray_start The world-space point where the ray intersects the window plane. + * \param r_ray_normal The normalized world-space direction of towards mval. + * + * \note Ignores view near/far clipping, to take this into account use #ED_view3d_win_to_ray_clipped. + */ +void ED_view3d_win_to_ray( + const ARegion *ar, const float mval[2], + float r_ray_start[3], float r_ray_normal[3]) +{ + ED_view3d_win_to_origin(ar, mval, r_ray_start); + ED_view3d_win_to_vector(ar, mval, r_ray_normal); +} + /** * Calculate a normalized 3d direction vector from the viewpoint towards a global location. * In orthographic view the resulting vector will match the view vector. -- cgit v1.2.3