diff options
Diffstat (limited to 'source/blender/editors/space_view3d/view3d_project.c')
| -rw-r--r-- | source/blender/editors/space_view3d/view3d_project.c | 68 |
1 files changed, 56 insertions, 12 deletions
diff --git a/source/blender/editors/space_view3d/view3d_project.c b/source/blender/editors/space_view3d/view3d_project.c index 767df04c0b0..3cc0857c8a7 100644 --- a/source/blender/editors/space_view3d/view3d_project.c +++ b/source/blender/editors/space_view3d/view3d_project.c @@ -367,19 +367,19 @@ bool ED_view3d_clip_segment(const RegionView3D *rv3d, float ray_start[3], float * \param r_ray_co The world-space point where the ray intersects the window plane. * \param r_ray_normal The normalized world-space direction of towards mval. * \param r_ray_start The world-space starting point of the ray. - * \param do_clip Optionally clip the start of the ray by the view clipping planes. + * \param do_clip_planes Optionally clip the start of the ray by the view clipping planes. * \return success, false if the ray is totally clipped. */ -bool ED_view3d_win_to_ray_ex( +bool ED_view3d_win_to_ray_clipped_ex( const ARegion *ar, const View3D *v3d, const float mval[2], - float r_ray_co[3], float r_ray_normal[3], float r_ray_start[3], bool do_clip) + float r_ray_co[3], float r_ray_normal[3], float r_ray_start[3], bool do_clip_planes) { float ray_end[3]; view3d_win_to_ray_segment(ar, v3d, mval, r_ray_co, r_ray_normal, r_ray_start, ray_end); /* bounds clipping */ - if (do_clip) { + if (do_clip_planes) { return ED_view3d_clip_segment(ar->regiondata, r_ray_start, ray_end); } @@ -396,14 +396,32 @@ bool ED_view3d_win_to_ray_ex( * \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. - * \param do_clip Optionally clip the start of the ray by the view clipping planes. + * \param do_clip_planes Optionally clip the start of the ray by the view clipping planes. * \return success, false if the ray is totally clipped. */ -bool ED_view3d_win_to_ray( +bool ED_view3d_win_to_ray_clipped( const ARegion *ar, const View3D *v3d, const float mval[2], - float r_ray_start[3], float r_ray_normal[3], const bool do_clip) + float r_ray_start[3], float r_ray_normal[3], const bool do_clip_planes) { - return ED_view3d_win_to_ray_ex(ar, v3d, mval, NULL, r_ray_normal, r_ray_start, do_clip); + 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); } /** @@ -537,6 +555,31 @@ 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], const bool do_clip, + 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, do_clip)) { + 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], const bool do_clip, + 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, do_clip, r_out); +} + /** * Calculate a 3d difference vector from 2d window offset. * note that ED_view3d_calc_zfac() must be called first to determine @@ -630,16 +673,17 @@ void ED_view3d_win_to_vector(const ARegion *ar, const float mval[2], float out[3 * \param mval The area relative 2d location (such as event->mval, converted into float[2]). * \param r_ray_start The world-space starting point of the segment. * \param r_ray_end The world-space end point of the segment. - * \param do_clip Optionally clip the ray by the view clipping planes. + * \param do_clip_planes Optionally clip the ray by the view clipping planes. * \return success, false if the segment is totally clipped. */ -bool ED_view3d_win_to_segment(const ARegion *ar, View3D *v3d, const float mval[2], - float r_ray_start[3], float r_ray_end[3], const bool do_clip) +bool ED_view3d_win_to_segment_clipped( + const ARegion *ar, View3D *v3d, const float mval[2], + float r_ray_start[3], float r_ray_end[3], const bool do_clip_planes) { view3d_win_to_ray_segment(ar, v3d, mval, NULL, NULL, r_ray_start, r_ray_end); /* bounds clipping */ - if (do_clip) { + if (do_clip_planes) { return ED_view3d_clip_segment((RegionView3D *)ar->regiondata, r_ray_start, r_ray_end); } |