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author | Campbell Barton <ideasman42@gmail.com> | 2020-07-19 14:27:13 +0300 |
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committer | Campbell Barton <ideasman42@gmail.com> | 2020-07-19 14:27:13 +0300 |
commit | 8c90910dcc3ac56ecaa3f0d0ed1a43a423ff687f (patch) | |
tree | 713ac786e3470efe7f3e04625e5b4945d274f042 /source/blender/blenlib/intern | |
parent | ccd2af43b3ab83dc873010faade1b2916553291a (diff) |
Fix T66937: Blank view on navigation with auto-deph & large clip-end
Diffstat (limited to 'source/blender/blenlib/intern')
-rw-r--r-- | source/blender/blenlib/intern/math_geom.c | 31 |
1 files changed, 31 insertions, 0 deletions
diff --git a/source/blender/blenlib/intern/math_geom.c b/source/blender/blenlib/intern/math_geom.c index d3dc4729617..2891279bb63 100644 --- a/source/blender/blenlib/intern/math_geom.c +++ b/source/blender/blenlib/intern/math_geom.c @@ -4880,6 +4880,37 @@ void projmat_dimensions(const float projmat[4][4], } } +void projmat_dimensions_db(const float projmat_fl[4][4], + double *r_left, + double *r_right, + double *r_bottom, + double *r_top, + double *r_near, + double *r_far) +{ + double projmat[4][4]; + copy_m4d_m4(projmat, projmat_fl); + + bool is_persp = projmat[3][3] == 0.0f; + + if (is_persp) { + *r_left = (projmat[2][0] - 1.0) / projmat[0][0]; + *r_right = (projmat[2][0] + 1.0) / projmat[0][0]; + *r_bottom = (projmat[2][1] - 1.0) / projmat[1][1]; + *r_top = (projmat[2][1] + 1.0) / projmat[1][1]; + *r_near = projmat[3][2] / (projmat[2][2] - 1.0); + *r_far = projmat[3][2] / (projmat[2][2] + 1.0); + } + else { + *r_left = (-projmat[3][0] - 1.0) / projmat[0][0]; + *r_right = (-projmat[3][0] + 1.0) / projmat[0][0]; + *r_bottom = (-projmat[3][1] - 1.0) / projmat[1][1]; + *r_top = (-projmat[3][1] + 1.0) / projmat[1][1]; + *r_near = (projmat[3][2] + 1.0) / projmat[2][2]; + *r_far = (projmat[3][2] - 1.0) / projmat[2][2]; + } +} + /** * Creates a projection matrix for a small region of the viewport. * |