diff options
Diffstat (limited to 'source/blender/editors/mesh/editmesh_knife.c')
| -rw-r--r-- | source/blender/editors/mesh/editmesh_knife.c | 258 |
1 files changed, 118 insertions, 140 deletions
diff --git a/source/blender/editors/mesh/editmesh_knife.c b/source/blender/editors/mesh/editmesh_knife.c index 787b79f0d6e..621155bc696 100644 --- a/source/blender/editors/mesh/editmesh_knife.c +++ b/source/blender/editors/mesh/editmesh_knife.c @@ -209,6 +209,8 @@ typedef struct KnifeTool_OpData { bool is_ortho; float ortho_extent; + float ortho_extent_center[3]; + float clipsta, clipend; enum { @@ -226,14 +228,8 @@ typedef struct KnifeTool_OpData { /* use to check if we're currently dragging an angle snapped line */ bool is_angle_snapping; - - enum { - ANGLE_FREE, - ANGLE_0, - ANGLE_45, - ANGLE_90, - ANGLE_135 - } angle_snapping; + bool angle_snapping; + float angle; const float (*cagecos)[3]; } KnifeTool_OpData; @@ -941,98 +937,66 @@ static void knife_finish_cut(KnifeTool_OpData *kcd) static void knifetool_draw_angle_snapping(const KnifeTool_OpData *kcd) { - bglMats mats; - double u[3], u1[2], u2[2], v1[3], v2[3], dx, dy; - double wminx, wminy, wmaxx, wmaxy; - - /* make u the window coords of prevcage */ - view3d_get_transformation(kcd->ar, kcd->vc.rv3d, kcd->ob, &mats); - gluProject(kcd->prev.cage[0], kcd->prev.cage[1], kcd->prev.cage[2], - mats.modelview, mats.projection, mats.viewport, - &u[0], &u[1], &u[2]); - - /* make u1, u2 the points on window going through u at snap angle */ - wminx = kcd->ar->winrct.xmin; - wmaxx = kcd->ar->winrct.xmin + kcd->ar->winx; - wminy = kcd->ar->winrct.ymin; - wmaxy = kcd->ar->winrct.ymin + kcd->ar->winy; - - switch (kcd->angle_snapping) { - case ANGLE_0: - u1[0] = wminx; - u2[0] = wmaxx; - u1[1] = u2[1] = u[1]; - break; - case ANGLE_90: - u1[0] = u2[0] = u[0]; - u1[1] = wminy; - u2[1] = wmaxy; - break; - case ANGLE_45: - /* clip against left or bottom */ - dx = u[0] - wminx; - dy = u[1] - wminy; - if (dy > dx) { - u1[0] = wminx; - u1[1] = u[1] - dx; - } - else { - u1[0] = u[0] - dy; - u1[1] = wminy; - } - /* clip against right or top */ - dx = wmaxx - u[0]; - dy = wmaxy - u[1]; - if (dy > dx) { - u2[0] = wmaxx; - u2[1] = u[1] + dx; - } - else { - u2[0] = u[0] + dy; - u2[1] = wmaxy; - } - break; - case ANGLE_135: - /* clip against right or bottom */ - dx = wmaxx - u[0]; - dy = u[1] - wminy; - if (dy > dx) { - u1[0] = wmaxx; - u1[1] = u[1] - dx; - } - else { - u1[0] = u[0] + dy; - u1[1] = wminy; - } - /* clip against left or top */ - dx = u[0] - wminx; - dy = wmaxy - u[1]; - if (dy > dx) { - u2[0] = wminx; - u2[1] = u[1] + dx; - } - else { - u2[0] = u[0] - dy; - u2[1] = wmaxy; + float v1[3], v2[3]; + float planes[4][4]; + + planes_from_projmat( + (float (*)[4])kcd->projmat, + planes[2], planes[0], planes[3], planes[1], NULL, NULL); + + /* ray-cast all planes */ + { + float ray_dir[3]; + float ray_hit_best[2][3] = {{UNPACK3(kcd->prev.cage)}, {UNPACK3(kcd->curr.cage)}}; + float lambda_best[2] = {-FLT_MAX, FLT_MAX}; + int i; + + /* we (sometimes) need the lines to be at the same depth before projecting */ +#if 0 + sub_v3_v3v3(ray_dir, kcd->curr.cage, kcd->prev.cage); +#else + { + float curr_cage_adjust[3]; + float co_depth[3]; + + copy_v3_v3(co_depth, kcd->prev.cage); + mul_m4_v3(kcd->ob->obmat, co_depth); + ED_view3d_win_to_3d(kcd->ar, co_depth, kcd->curr.mval, curr_cage_adjust); + mul_m4_v3(kcd->ob->imat, curr_cage_adjust); + + sub_v3_v3v3(ray_dir, curr_cage_adjust, kcd->prev.cage); + } +#endif + + for (i = 0; i < 4; i++) { + float ray_hit[3]; + float lambda_test; + if (isect_ray_plane_v3(kcd->prev.cage, ray_dir, planes[i], &lambda_test, false)) { + madd_v3_v3v3fl(ray_hit, kcd->prev.cage, ray_dir, lambda_test); + if (lambda_test < 0.0f) { + if (lambda_test > lambda_best[0]) { + copy_v3_v3(ray_hit_best[0], ray_hit); + lambda_best[0] = lambda_test; + } + } + else { + if (lambda_test < lambda_best[1]) { + copy_v3_v3(ray_hit_best[1], ray_hit); + lambda_best[1] = lambda_test; + } + } } - break; - default: - return; - } + } - /* unproject u1 and u2 back into object space */ - gluUnProject(u1[0], u1[1], 0.0, - mats.modelview, mats.projection, mats.viewport, - &v1[0], &v1[1], &v1[2]); - gluUnProject(u2[0], u2[1], 0.0, - mats.modelview, mats.projection, mats.viewport, - &v2[0], &v2[1], &v2[2]); + copy_v3_v3(v1, ray_hit_best[0]); + copy_v3_v3(v2, ray_hit_best[1]); + } UI_ThemeColor(TH_TRANSFORM); glLineWidth(2.0); glBegin(GL_LINES); - glVertex3dv(v1); - glVertex3dv(v2); + glVertex3fv(v1); + glVertex3fv(v2); glEnd(); } @@ -1065,7 +1029,7 @@ static void knifetool_draw(const bContext *C, ARegion *UNUSED(ar), void *arg) glMultMatrixf(kcd->ob->obmat); if (kcd->mode == MODE_DRAGGING) { - if (kcd->angle_snapping != ANGLE_FREE) + if (kcd->is_angle_snapping) knifetool_draw_angle_snapping(kcd); glColor3ubv(kcd->colors.line); @@ -1281,20 +1245,29 @@ static bool knife_ray_intersect_face( return false; } -/* Calculate maximum excursion from (0,0,0) of mesh */ +/** + * Calculate the center and maximum excursion of mesh. + */ static void calc_ortho_extent(KnifeTool_OpData *kcd) { BMIter iter; BMVert *v; BMesh *bm = kcd->em->bm; - float max_xyz = 0.0f; - int i; + float min[3], max[3]; - BM_ITER_MESH (v, &iter, bm, BM_VERTS_OF_MESH) { - for (i = 0; i < 3; i++) - max_xyz = max_ff(max_xyz, fabsf(v->co[i])); + INIT_MINMAX(min, max); + + if (kcd->cagecos) { + minmax_v3v3_v3_array(min, max, kcd->cagecos, bm->totvert); + } + else { + BM_ITER_MESH (v, &iter, bm, BM_VERTS_OF_MESH) { + minmax_v3v3_v3(min, max, v->co); + } } - kcd->ortho_extent = max_xyz; + + kcd->ortho_extent = len_v3v3(min, max) / 2; + mid_v3_v3v3(kcd->ortho_extent_center, min, max); } static BMElem *bm_elem_from_knife_vert(KnifeVert *kfv, KnifeEdge **r_kfe) @@ -1482,14 +1455,20 @@ static bool point_is_visible( /* Clip the line (v1, v2) to planes perpendicular to it and distances d from * the closest point on the line to the origin */ -static void clip_to_ortho_planes(float v1[3], float v2[3], float d) +static void clip_to_ortho_planes(float v1[3], float v2[3], const float center[3], const float d) { - float closest[3]; - const float origin[3] = {0.0f, 0.0f, 0.0f}; + float closest[3], dir[3]; + + sub_v3_v3v3(dir, v1, v2); + normalize_v3(dir); + + /* could be v1 or v2 */ + sub_v3_v3(v1, center); + project_plane_v3_v3v3(closest, v1, dir); + add_v3_v3(closest, center); - closest_to_line_v3(closest, origin, v1, v2); - dist_ensure_v3_v3fl(v1, closest, d); - dist_ensure_v3_v3fl(v2, closest, d); + madd_v3_v3v3fl(v1, closest, dir, d); + madd_v3_v3v3fl(v2, closest, dir, -d); } static void set_linehit_depth(KnifeTool_OpData *kcd, KnifeLineHit *lh) @@ -1573,8 +1552,8 @@ static void knife_find_line_hits(KnifeTool_OpData *kcd) if (kcd->is_ortho && (kcd->vc.rv3d->persp != RV3D_CAMOB)) { if (kcd->ortho_extent == 0.0f) calc_ortho_extent(kcd); - clip_to_ortho_planes(v1, v3, kcd->ortho_extent + 10.0f); - clip_to_ortho_planes(v2, v4, kcd->ortho_extent + 10.0f); + clip_to_ortho_planes(v1, v3, kcd->ortho_extent_center, kcd->ortho_extent + 10.0f); + clip_to_ortho_planes(v2, v4, kcd->ortho_extent_center, kcd->ortho_extent + 10.0f); } /* First use bvh tree to find faces, knife edges, and knife verts that might @@ -2124,42 +2103,41 @@ static KnifeVert *knife_find_closest_vert(KnifeTool_OpData *kcd, float p[3], flo return NULL; } +/** + * Snaps a 2d vector to an angle, relative to \a v_ref. + */ +static float snap_v2_angle(float r[2], const float v[2], const float v_ref[2], float angle_snap) +{ + float m2[2][2]; + float v_unit[2]; + float angle, angle_delta; + + BLI_ASSERT_UNIT_V2(v_ref); + + normalize_v2_v2(v_unit, v); + angle = angle_signed_v2v2(v_unit, v_ref); + angle_delta = (roundf(angle / angle_snap) * angle_snap) - angle; + rotate_m2(m2, angle_delta); + + mul_v2_m2v2(r, m2, v); + return angle + angle_delta; +} + /* update both kcd->curr.mval and kcd->mval to snap to required angle */ static bool knife_snap_angle(KnifeTool_OpData *kcd) { - float dx, dy; - float w, abs_tan; + const float dvec_ref[2] = {0.0f, 1.0f}; + float dvec[2], dvec_snap[2]; + float snap_step = DEG2RADF(45); - dx = kcd->curr.mval[0] - kcd->prev.mval[0]; - dy = kcd->curr.mval[1] - kcd->prev.mval[1]; - if (dx == 0.0f && dy == 0.0f) + sub_v2_v2v2(dvec, kcd->curr.mval, kcd->prev.mval); + if (is_zero_v2(dvec)) { return false; - - if (dx == 0.0f) { - kcd->angle_snapping = ANGLE_90; - kcd->curr.mval[0] = kcd->prev.mval[0]; } - w = dy / dx; - abs_tan = fabsf(w); - if (abs_tan <= 0.4142f) { /* tan(22.5 degrees) = 0.4142 */ - kcd->angle_snapping = ANGLE_0; - kcd->curr.mval[1] = kcd->prev.mval[1]; - } - else if (abs_tan < 2.4142f) { /* tan(67.5 degrees) = 2.4142 */ - if (w > 0) { - kcd->angle_snapping = ANGLE_45; - kcd->curr.mval[1] = kcd->prev.mval[1] + dx; - } - else { - kcd->angle_snapping = ANGLE_135; - kcd->curr.mval[1] = kcd->prev.mval[1] - dx; - } - } - else { - kcd->angle_snapping = ANGLE_90; - kcd->curr.mval[0] = kcd->prev.mval[0]; - } + kcd->angle = snap_v2_angle(dvec_snap, dvec, dvec_ref, snap_step); + + add_v2_v2v2(kcd->curr.mval, kcd->prev.mval, dvec_snap); copy_v2_v2(kcd->mval, kcd->curr.mval); @@ -2175,7 +2153,7 @@ static int knife_update_active(KnifeTool_OpData *kcd) /* view matrix may have changed, reproject */ knife_project_v2(kcd, kcd->prev.cage, kcd->prev.mval); - if (kcd->angle_snapping != ANGLE_FREE && kcd->mode == MODE_DRAGGING) { + if (kcd->angle_snapping && (kcd->mode == MODE_DRAGGING)) { kcd->is_angle_snapping = knife_snap_angle(kcd); } else { |