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-rw-r--r--src/box3d.cpp14
1 files changed, 13 insertions, 1 deletions
diff --git a/src/box3d.cpp b/src/box3d.cpp
index 0f9f8defe..3397cd6b0 100644
--- a/src/box3d.cpp
+++ b/src/box3d.cpp
@@ -1428,7 +1428,19 @@ box3d_get_perspective(SPBox3D const *box) {
}
void
-box3d_switch_perspectives(SPBox3D *box, Persp3D *old_persp, Persp3D *new_persp) {
+box3d_switch_perspectives(SPBox3D *box, Persp3D *old_persp, Persp3D *new_persp, bool recompute_corners) {
+ if (recompute_corners) {
+ box->orig_corner0.normalize();
+ box->orig_corner7.normalize();
+ double z0 = box->orig_corner0[Proj::Z];
+ double z7 = box->orig_corner7[Proj::Z];
+ NR::Point corner0_screen = box3d_get_corner_screen(box, 0);
+ NR::Point corner7_screen = box3d_get_corner_screen(box, 7);
+
+ box->orig_corner0 = new_persp->tmat.preimage(corner0_screen, z0, Proj::Z);
+ box->orig_corner7 = new_persp->tmat.preimage(corner7_screen, z7, Proj::Z);
+ }
+
persp3d_remove_box (old_persp, box);
persp3d_add_box (new_persp, box);