From fb87d236edb7e98c5fc526b9829e6bc6b8916828 Mon Sep 17 00:00:00 2001 From: Germano Cavalcante Date: Tue, 3 Aug 2021 17:34:14 -0300 Subject: Fix calculation of 'projmat_dimensions' `r_left`, `r_right`, `r_bottom` and `r_top` were ignoring `clip_near` value when in perspective view. Also rename `projmat` to `winmat` in these cases. --- source/blender/blenlib/BLI_math_geom.h | 4 +- source/blender/blenlib/intern/math_geom.c | 64 +++++++++++++++---------------- 2 files changed, 34 insertions(+), 34 deletions(-) (limited to 'source') diff --git a/source/blender/blenlib/BLI_math_geom.h b/source/blender/blenlib/BLI_math_geom.h index 9ac14a6edfe..bcda25ca533 100644 --- a/source/blender/blenlib/BLI_math_geom.h +++ b/source/blender/blenlib/BLI_math_geom.h @@ -682,14 +682,14 @@ void planes_from_projmat(const float mat[4][4], float near[4], float far[4]); -void projmat_dimensions(const float projmat[4][4], +void projmat_dimensions(const float winmat[4][4], float *r_left, float *r_right, float *r_bottom, float *r_top, float *r_near, float *r_far); -void projmat_dimensions_db(const float projmat[4][4], +void projmat_dimensions_db(const float winmat[4][4], double *r_left, double *r_right, double *r_bottom, diff --git a/source/blender/blenlib/intern/math_geom.c b/source/blender/blenlib/intern/math_geom.c index 803291e4a3b..823e72a91e5 100644 --- a/source/blender/blenlib/intern/math_geom.c +++ b/source/blender/blenlib/intern/math_geom.c @@ -4962,7 +4962,7 @@ void planes_from_projmat(const float mat[4][4], } } -void projmat_dimensions(const float projmat[4][4], +void projmat_dimensions(const float winmat[4][4], float *r_left, float *r_right, float *r_bottom, @@ -4970,27 +4970,27 @@ void projmat_dimensions(const float projmat[4][4], float *r_near, float *r_far) { - bool is_persp = projmat[3][3] == 0.0f; - + const bool is_persp = winmat[3][3] == 0.0f; if (is_persp) { - *r_left = (projmat[2][0] - 1.0f) / projmat[0][0]; - *r_right = (projmat[2][0] + 1.0f) / projmat[0][0]; - *r_bottom = (projmat[2][1] - 1.0f) / projmat[1][1]; - *r_top = (projmat[2][1] + 1.0f) / projmat[1][1]; - *r_near = projmat[3][2] / (projmat[2][2] - 1.0f); - *r_far = projmat[3][2] / (projmat[2][2] + 1.0f); + const float near = winmat[3][2] / (winmat[2][2] - 1.0f); + *r_left = near * ((winmat[2][0] - 1.0f) / winmat[0][0]); + *r_right = near * ((winmat[2][0] + 1.0f) / winmat[0][0]); + *r_bottom = near * ((winmat[2][1] - 1.0f) / winmat[1][1]); + *r_top = near * ((winmat[2][1] + 1.0f) / winmat[1][1]); + *r_near = near; + *r_far = winmat[3][2] / (winmat[2][2] + 1.0f); } else { - *r_left = (-projmat[3][0] - 1.0f) / projmat[0][0]; - *r_right = (-projmat[3][0] + 1.0f) / projmat[0][0]; - *r_bottom = (-projmat[3][1] - 1.0f) / projmat[1][1]; - *r_top = (-projmat[3][1] + 1.0f) / projmat[1][1]; - *r_near = (projmat[3][2] + 1.0f) / projmat[2][2]; - *r_far = (projmat[3][2] - 1.0f) / projmat[2][2]; + *r_left = (-winmat[3][0] - 1.0f) / winmat[0][0]; + *r_right = (-winmat[3][0] + 1.0f) / winmat[0][0]; + *r_bottom = (-winmat[3][1] - 1.0f) / winmat[1][1]; + *r_top = (-winmat[3][1] + 1.0f) / winmat[1][1]; + *r_near = (winmat[3][2] + 1.0f) / winmat[2][2]; + *r_far = (winmat[3][2] - 1.0f) / winmat[2][2]; } } -void projmat_dimensions_db(const float projmat_fl[4][4], +void projmat_dimensions_db(const float winmat_fl[4][4], double *r_left, double *r_right, double *r_bottom, @@ -4998,26 +4998,26 @@ void projmat_dimensions_db(const float projmat_fl[4][4], double *r_near, double *r_far) { - double projmat[4][4]; - copy_m4d_m4(projmat, projmat_fl); - - bool is_persp = projmat[3][3] == 0.0f; + double winmat[4][4]; + copy_m4d_m4(winmat, winmat_fl); + const bool is_persp = winmat[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); + const double near = winmat[3][2] / (winmat[2][2] - 1.0); + *r_left = near * ((winmat[2][0] - 1.0) / winmat[0][0]); + *r_right = near * ((winmat[2][0] + 1.0) / winmat[0][0]); + *r_bottom = near * ((winmat[2][1] - 1.0) / winmat[1][1]); + *r_top = near * ((winmat[2][1] + 1.0) / winmat[1][1]); + *r_near = near; + *r_far = winmat[3][2] / (winmat[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]; + *r_left = (-winmat[3][0] - 1.0) / winmat[0][0]; + *r_right = (-winmat[3][0] + 1.0) / winmat[0][0]; + *r_bottom = (-winmat[3][1] - 1.0) / winmat[1][1]; + *r_top = (-winmat[3][1] + 1.0) / winmat[1][1]; + *r_near = (winmat[3][2] + 1.0) / winmat[2][2]; + *r_far = (winmat[3][2] - 1.0) / winmat[2][2]; } } -- cgit v1.2.3