Don't reshape boxes in the direction of infinite VPs when dragging VPs (fixes resizin...

diff --git a/src/perspective3d.cpp b/src/perspective3d.cpp
index bb4963d119952f831efc4024b009ea0162453786..421725bdbd40018f6fd25506f773c9ee1ea5b6d7 100644 (file)
--- a/src/perspective3d.cpp
+++ b/src/perspective3d.cpp
@@ -296,18 +296,24 @@ Perspective3D::reshape_boxes (Box3D::Axis axes)
         SP3DBox *box = SP_3DBOX (i->data);
         if (axes & Box3D::X) {
             vp = this->get_vanishing_point (Box3D::X);
-            new_pt = vp->get_pos() + box->ratio_x * (box->corners[3] - vp->get_pos());
-            sp_3dbox_move_corner_in_XY_plane (box, 2, new_pt);
+            if (vp->is_finite()) {
+                new_pt = vp->get_pos() + box->ratio_x * (box->corners[3] - vp->get_pos());
+                sp_3dbox_move_corner_in_XY_plane (box, 2, new_pt);
+            }
         }
         if (axes & Box3D::Y) {
             vp = this->get_vanishing_point (Box3D::Y);
-            new_pt = vp->get_pos() + box->ratio_y * (box->corners[0] - vp->get_pos());
-            sp_3dbox_move_corner_in_XY_plane (box, 2, new_pt);
+            if (vp->is_finite()) {
+                new_pt = vp->get_pos() + box->ratio_y * (box->corners[0] - vp->get_pos());
+                sp_3dbox_move_corner_in_XY_plane (box, 2, new_pt);
+            }
         }
         if (axes & Box3D::Z) {
             vp = this->get_vanishing_point (Box3D::Z);
-            new_pt = vp->get_pos() + box->ratio_z * (box->corners[0] - vp->get_pos());
-            sp_3dbox_move_corner_in_Z_direction (box, 4, new_pt);
+            if (vp->is_finite()) {
+                new_pt = vp->get_pos() + box->ratio_z * (box->corners[0] - vp->get_pos());
+                sp_3dbox_move_corner_in_Z_direction (box, 4, new_pt);
+            }
         }                
 
         sp_3dbox_set_shape (box, true);