forked from bartvdbraak/blender
knife tool: use the squared distance for comparison.
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@ -1595,7 +1595,8 @@ static float knife_snap_size(KnifeTool_OpData *kcd, float maxsize)
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static KnifeEdge *knife_find_closest_edge(KnifeTool_OpData *kcd, float p[3], float cagep[3], BMFace **fptr, bool *is_space)
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{
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BMFace *f;
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float co[3], cageco[3], sco[2], maxdist = knife_snap_size(kcd, kcd->ethresh);
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float co[3], cageco[3], sco[2];
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float maxdist = knife_snap_size(kcd, kcd->ethresh);
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if (kcd->ignore_vert_snapping)
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maxdist *= 0.5f;
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@ -1610,10 +1611,11 @@ static KnifeEdge *knife_find_closest_edge(KnifeTool_OpData *kcd, float p[3], flo
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kcd->curr.bmface = f;
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if (f) {
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const float maxdist_sq = maxdist * maxdist;
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KnifeEdge *cure = NULL;
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ListBase *lst;
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Ref *ref;
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float dis, curdis = FLT_MAX;
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float dis_sq, curdis_sq = FLT_MAX;
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knife_project_v2(kcd, cageco, sco);
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@ -1626,8 +1628,8 @@ static KnifeEdge *knife_find_closest_edge(KnifeTool_OpData *kcd, float p[3], flo
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knife_project_v2(kcd, kfe->v1->cageco, kfe->v1->sco);
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knife_project_v2(kcd, kfe->v2->cageco, kfe->v2->sco);
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dis = dist_to_line_segment_v2(sco, kfe->v1->sco, kfe->v2->sco);
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if (dis < curdis && dis < maxdist) {
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dis_sq = dist_squared_to_line_segment_v2(sco, kfe->v1->sco, kfe->v2->sco);
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if (dis_sq < curdis_sq && dis_sq < maxdist_sq) {
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if (kcd->vc.rv3d->rflag & RV3D_CLIPPING) {
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float lambda = line_point_factor_v2(sco, kfe->v1->sco, kfe->v2->sco);
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float vec[3];
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@ -1636,12 +1638,12 @@ static KnifeEdge *knife_find_closest_edge(KnifeTool_OpData *kcd, float p[3], flo
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if (ED_view3d_clipping_test(kcd->vc.rv3d, vec, true) == 0) {
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cure = kfe;
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curdis = dis;
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curdis_sq = dis_sq;
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}
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}
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else {
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cure = kfe;
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curdis = dis;
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curdis_sq = dis_sq;
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}
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}
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}
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