forked from bartvdbraak/blender
knife project:
- selecting faces inside the cut now works properly - improve epsilon for detecing if faces are inside a cut (still not perfect)
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284e59d608
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@ -3279,7 +3279,10 @@ void MESH_OT_knife_tool(wmOperatorType *ot)
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static bool edbm_mesh_knife_face_isect(ARegion *ar, LinkNode *polys, BMFace *f, float projmat[4][4])
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{
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float co[3];
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float co_a[3];
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float co_b[3];
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float co_ss_a[2];
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float co_ss_b[2];
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float co_ss[2];
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{
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@ -3289,11 +3292,14 @@ static bool edbm_mesh_knife_face_isect(ARegion *ar, LinkNode *polys, BMFace *f,
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l = BM_FACE_FIRST_LOOP(f);
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BM_loop_calc_face_tangent(l, tangent);
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/* get a point inside the face (tiny offset) - we could be more clever here */
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mul_v3_fl(tangent, 0.02f);
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add_v3_v3v3(co, l->v->co, tangent);
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copy_v3_v3(co_a, l->v->co);
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add_v3_v3v3(co_b, co_a, tangent);
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}
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ED_view3d_project_float_v3_m4(ar, co, co_ss, projmat);
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ED_view3d_project_float_v3_m4(ar, co_a, co_ss_a, projmat);
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ED_view3d_project_float_v3_m4(ar, co_b, co_ss_b, projmat);
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interp_v2_v2v2(co_ss, co_ss_a, co_ss_b, 0.005f);
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/* check */
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{
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@ -3413,11 +3419,18 @@ void EDBM_mesh_knife(bContext *C, LinkNode *polys, bool use_tag)
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int found = false;
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do {
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if (BM_elem_flag_test(l_iter, BM_ELEM_TAG) != false) {
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if (BM_elem_flag_test(l_iter->e, BM_ELEM_TAG) != false) {
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/* now check if the adjacent faces us tagged */
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BMLoop *l_radial_iter = l_iter->radial_next;
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if (l_radial_iter != l_iter) {
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do {
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if (BM_elem_flag_test(l_radial_iter->f, BM_ELEM_TAG)) {
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found = true;
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break;
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}
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} while ((l_iter = l_iter->next) != l_first);
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} while ((l_radial_iter = l_radial_iter->radial_next) != l_iter && (found == false));
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}
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}
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} while ((l_iter = l_iter->next) != l_first && (found == false));
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if (found) {
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// if (edbm_mesh_knife_face_isect(kcd->ar, polys, f, projmat))
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