diff --git a/src/box3d.cpp b/src/box3d.cpp
index 4044b5647350bdfe772d67a09fbdb5080c5ae509..0f9f8defef022a47478642686c918c858cf98c8e 100644 (file)
--- a/src/box3d.cpp
+++ b/src/box3d.cpp
box3d_swap_coords(box, Proj::Z, true);
}
+static void
+box3d_check_for_swapped_coords(SPBox3D *box, Proj::Axis axis, bool smaller) {
+ box->orig_corner0.normalize();
+ box->orig_corner7.normalize();
+
+ if ((box->orig_corner0[axis] < box->orig_corner7[axis]) != smaller) {
+ box->swapped = (Box3D::Axis) (box->swapped | Proj::toAffine(axis));
+ } else {
+ box->swapped = (Box3D::Axis) (box->swapped & ~Proj::toAffine(axis));
+ }
+}
+
+static void
+box3d_exchange_coords(SPBox3D *box) {
+ box->orig_corner0.normalize();
+ box->orig_corner7.normalize();
+
+ for (int i = 0; i < 3; ++i) {
+ if (box->swapped & Box3D::axes[i]) {
+ double tmp = box->orig_corner0[i];
+ box->orig_corner0[i] = box->orig_corner7[i];
+ box->orig_corner7[i] = tmp;
+ }
+ }
+}
+
+void
+box3d_check_for_swapped_coords(SPBox3D *box) {
+ box3d_check_for_swapped_coords(box, Proj::X, false);
+ box3d_check_for_swapped_coords(box, Proj::Y, false);
+ box3d_check_for_swapped_coords(box, Proj::Z, true);
+
+ box3d_exchange_coords(box);
+}
+
void
box3d_add_to_selection(SPBox3D *box) {
Persp3D *persp = box3d_get_perspective(box);