diff options
Diffstat (limited to 'source/blender/editors/mesh/editmesh_knife.c')
| -rw-r--r-- | source/blender/editors/mesh/editmesh_knife.c | 33 |
1 files changed, 19 insertions, 14 deletions
diff --git a/source/blender/editors/mesh/editmesh_knife.c b/source/blender/editors/mesh/editmesh_knife.c index 37e0ef661b6..b5cd9c7f60d 100644 --- a/source/blender/editors/mesh/editmesh_knife.c +++ b/source/blender/editors/mesh/editmesh_knife.c @@ -205,6 +205,12 @@ typedef struct KnifeTool_OpData { BLI_mempool *refs; + /** + * Use this instead of #Object.imat since it's calculated using #invert_m4_m4_safe_ortho + * to support objects with zero scale on a single axis. + */ + float ob_imat[4][4]; + float projmat[4][4]; float projmat_inv[4][4]; /* vector along view z axis (object space, normalized) */ @@ -287,7 +293,7 @@ static void knifetool_draw_angle_snapping(const KnifeTool_OpData *kcd) copy_v3_v3(co_depth, kcd->prev.cage); mul_m4_v3(kcd->ob->obmat, co_depth); ED_view3d_win_to_3d(kcd->vc.v3d, kcd->region, co_depth, kcd->curr.mval, curr_cage_adjust); - mul_m4_v3(kcd->ob->imat, curr_cage_adjust); + mul_m4_v3(kcd->ob_imat, curr_cage_adjust); sub_v3_v3v3(ray_dir, curr_cage_adjust, kcd->prev.cage); } @@ -576,10 +582,8 @@ static void knife_input_ray_segment(KnifeTool_OpData *kcd, ED_view3d_unproject(kcd->vc.region, mval[0], mval[1], ofs, r_origin_ofs); /* transform into object space */ - invert_m4_m4(kcd->ob->imat, kcd->ob->obmat); - - mul_m4_v3(kcd->ob->imat, r_origin); - mul_m4_v3(kcd->ob->imat, r_origin_ofs); + mul_m4_v3(kcd->ob_imat, r_origin); + mul_m4_v3(kcd->ob_imat, r_origin_ofs); } static bool knife_verts_edge_in_face(KnifeVert *v1, KnifeVert *v2, BMFace *f) @@ -625,11 +629,11 @@ static bool knife_verts_edge_in_face(KnifeVert *v1, KnifeVert *v2, BMFace *f) static void knife_recalc_projmat(KnifeTool_OpData *kcd) { - invert_m4_m4(kcd->ob->imat, kcd->ob->obmat); ED_view3d_ob_project_mat_get(kcd->region->regiondata, kcd->ob, kcd->projmat); invert_m4_m4(kcd->projmat_inv, kcd->projmat); - mul_v3_mat3_m4v3(kcd->proj_zaxis, kcd->ob->imat, kcd->vc.rv3d->viewinv[2]); + invert_m4_m4_safe_ortho(kcd->ob_imat, kcd->ob->obmat); + mul_v3_mat3_m4v3(kcd->proj_zaxis, kcd->ob_imat, kcd->vc.rv3d->viewinv[2]); normalize_v3(kcd->proj_zaxis); kcd->is_ortho = ED_view3d_clip_range_get( @@ -941,8 +945,7 @@ static void knife_start_cut(KnifeTool_OpData *kcd) float ofs_local[3]; negate_v3_v3(ofs_local, kcd->vc.rv3d->ofs); - invert_m4_m4(kcd->ob->imat, kcd->ob->obmat); - mul_m4_v3(kcd->ob->imat, ofs_local); + mul_m4_v3(kcd->ob_imat, ofs_local); knife_input_ray_segment(kcd, kcd->curr.mval, 1.0f, origin, origin_ofs); @@ -1744,7 +1747,7 @@ static bool point_is_visible(KnifeTool_OpData *kcd, /* TODO: I think there's a simpler way to get the required raycast ray */ ED_view3d_unproject(kcd->vc.region, s[0], s[1], 0.0f, view); - mul_m4_v3(kcd->ob->imat, view); + mul_m4_v3(kcd->ob_imat, view); /* make p_ofs a little towards view, so ray doesn't hit p's face. */ sub_v3_v3(view, p); @@ -1875,10 +1878,10 @@ static void knife_find_line_hits(KnifeTool_OpData *kcd) ED_view3d_win_to_segment_clipped(kcd->vc.depsgraph, kcd->region, kcd->vc.v3d, s1, v1, v3, true); ED_view3d_win_to_segment_clipped(kcd->vc.depsgraph, kcd->region, kcd->vc.v3d, s2, v2, v4, true); - mul_m4_v3(kcd->ob->imat, v1); - mul_m4_v3(kcd->ob->imat, v2); - mul_m4_v3(kcd->ob->imat, v3); - mul_m4_v3(kcd->ob->imat, v4); + mul_m4_v3(kcd->ob_imat, v1); + mul_m4_v3(kcd->ob_imat, v2); + mul_m4_v3(kcd->ob_imat, v3); + mul_m4_v3(kcd->ob_imat, v4); /* Numeric error, 'v1' -> 'v2', 'v2' -> 'v4' * can end up being ~2000 units apart with an orthogonal perspective. @@ -2644,6 +2647,8 @@ static void knifetool_init(bContext *C, kcd->ob = obedit; kcd->region = CTX_wm_region(C); + invert_m4_m4_safe_ortho(kcd->ob_imat, kcd->ob->obmat); + em_setup_viewcontext(C, &kcd->vc); kcd->em = BKE_editmesh_from_object(kcd->ob); |