Background Images issue when having opposite ones or Aligned to View. #69967

New Issue

CobraA · 2019-09-17T06:18:44+02:00

CobraA commented

2019-09-17 06:18:44 +02:00

System Information
Windows 10 64 Bits.
Graphics card GeForce GTX 1080 Ti.

Blender Version
Broken: version: and 2.81 Alpha hash: 28ee0f97c3

Short description of error
The Background Images or Empties have some issues, when you set two opposite ones you get their wireframes shown (Pic1).

If you enable Only Axis Alinged and go to Ortho View they appear as Wireframes(Pic 2) and there is no way to hide them without hiding the Empties themselves, i think this is should be considered as a bug even though there isn't any "technical" one but rather a missing functionality that makes empties or background images useless for working with model sheets.

Exact steps for others to reproduce the error

Have two Background images in each opposite view and enable only one side for each front & back (Pic1).
Enable Only Axis Aligned.
Turn off Display in Perspective(optional).
Go to Ortho View and Rotate you'll see the Background images wireframes(Pic2) floating around your model, no way to hide them except hiding the Empties.

A way to hide these wireframes without hiding the Background Images would do the trick and if users want these Wireframes for selection or whatever then a setting in their Properties.
Pic 1

Pic 2

System Information Windows 10 64 Bits. Graphics card GeForce GTX 1080 Ti. Blender Version Broken: version: and 2.81 Alpha hash: 28ee0f97c33b Short description of error The Background Images or Empties have some issues, when you set two opposite ones you get their wireframes shown (Pic1). If you enable Only Axis Alinged and go to Ortho View they appear as Wireframes(Pic 2) and there is no way to hide them without hiding the Empties themselves, i think this is should be considered as a bug even though there isn't any "technical" one but rather a missing functionality that makes empties or background images useless for working with model sheets. Exact steps for others to reproduce the error - Have two Background images in each opposite view and enable only one side for each front & back (Pic1). - Enable Only Axis Aligned. - Turn off Display in Perspective(optional). - Go to Ortho View and Rotate you'll see the Background images wireframes(Pic2) floating around your model, no way to hide them except hiding the Empties. A way to hide these wireframes without hiding the Background Images would do the trick and if users want these Wireframes for selection or whatever then a setting in their Properties. **Pic 1** ![aze.jpg](https://archive.blender.org/developer/F7752258/aze.jpg) **Pic 2** ![WW.jpg](https://archive.blender.org/developer/F7752256/WW.jpg)

CobraA commented

2019-09-17 06:18:44 +02:00

Added subscriber: @CobraA

Jacques Lucke commented

2019-09-18 12:32:50 +02:00

Added subscriber: @JacquesLucke

Jacques Lucke commented

2019-09-18 12:32:50 +02:00

Please prepare a simple .blend file that allows us to reproduce the issue more easily. (make sure that the image is packed into the file)

CobraA commented

2019-09-18 19:37:38 +02:00

Here is the blend file.
Cryogenic_Chamber.blend

Here is the blend file. [Cryogenic_Chamber.blend](https://archive.blender.org/developer/F7756070/Cryogenic_Chamber.blend)

CobraA commented

2019-10-04 13:49:19 +02:00

Any update on this? it's really bugging me down.

Philipp Oeser commented

2020-01-09 18:03:20 +01:00

Added subscribers: @ideasman42, @lichtwerk

Philipp Oeser commented

2020-01-09 18:03:20 +01:00

I would also think these frames of empty images can get in the way.
[and the way we present the Display Only Axis Aligned option in the UI would make me think these are working just like Display Orthographic & Display Perspective -- acting on both image and frame]
Not sure if this would be considered a bug (probably not), but confirming for now and let @JacquesLucke or @ideasman42 decide.

Not sure about a good solution regarding the opposing Front and Back issue [I think it is best to avoid another option here], but this would hide the frame for the Display Only Axis Aligned case:
P1207: T69967_snippet



diff --git a/source/blender/blenkernel/intern/object.c b/source/blender/blenkernel/intern/object.c
index 1378e862034..2fa9f3c95f9 100644
--- a/source/blender/blenkernel/intern/object.c
+++ b/source/blender/blenkernel/intern/object.c
@@ -2986,6 +2986,16 @@ void BKE_object_empty_draw_type_set(Object *ob, const int value)
 bool BKE_object_empty_image_frame_is_visible_in_view3d(const Object *ob, const RegionView3D *rv3d)
 {
   const char visibility_flag = ob->empty_image_visibility_flag;
+
+  if (visibility_flag & OB_EMPTY_IMAGE_HIDE_NON_AXIS_ALIGNED) {
+    float proj[3];
+    project_plane_v3_v3v3(proj, ob->obmat- [x], rv3d->viewinv[2]);
+    const float proj_length_sq = len_squared_v3(proj);
+    if (proj_length_sq > 1e-5f) {
+      return false;
+    }
+  }
+
   if (rv3d->is_persp) {
     return (visibility_flag & OB_EMPTY_IMAGE_HIDE_PERSPECTIVE) == 0;
   }
@@ -3028,15 +3038,6 @@ bool BKE_object_empty_image_data_is_visible_in_view3d(const Object *ob, const Re
     }
   }
 
-  if (visibility_flag & OB_EMPTY_IMAGE_HIDE_NON_AXIS_ALIGNED) {
-    float proj[3];
-    project_plane_v3_v3v3(proj, ob->obmat- [x], rv3d->viewinv[2]);
-    const float proj_length_sq = len_squared_v3(proj);
-    if (proj_length_sq > 1e-5f) {
-      return false;
-    }
-  }
-
   return true;
 }

I would also think these frames of empty images can get in the way. [and the way we present the `Display Only Axis Aligned` option in the UI would make me think these are working just like `Display Orthographic` & `Display Perspective` -- acting on both image and frame] Not sure if this would be considered a bug (probably not), but confirming for now and let @JacquesLucke or @ideasman42 decide. Not sure about a good solution regarding the opposing `Front` and `Back` issue [I think it is best to avoid another option here], but this would hide the frame for the `Display Only Axis Aligned` case: [P1207: T69967_snippet](https://archive.blender.org/developer/P1207.txt) ``` diff --git a/source/blender/blenkernel/intern/object.c b/source/blender/blenkernel/intern/object.c index 1378e862034..2fa9f3c95f9 100644 --- a/source/blender/blenkernel/intern/object.c +++ b/source/blender/blenkernel/intern/object.c @@ -2986,6 +2986,16 @@ void BKE_object_empty_draw_type_set(Object *ob, const int value) bool BKE_object_empty_image_frame_is_visible_in_view3d(const Object *ob, const RegionView3D *rv3d) { const char visibility_flag = ob->empty_image_visibility_flag; + + if (visibility_flag & OB_EMPTY_IMAGE_HIDE_NON_AXIS_ALIGNED) { + float proj[3]; + project_plane_v3_v3v3(proj, ob->obmat- [x], rv3d->viewinv[2]); + const float proj_length_sq = len_squared_v3(proj); + if (proj_length_sq > 1e-5f) { + return false; + } + } + if (rv3d->is_persp) { return (visibility_flag & OB_EMPTY_IMAGE_HIDE_PERSPECTIVE) == 0; } @@ -3028,15 +3038,6 @@ bool BKE_object_empty_image_data_is_visible_in_view3d(const Object *ob, const Re } } - if (visibility_flag & OB_EMPTY_IMAGE_HIDE_NON_AXIS_ALIGNED) { - float proj[3]; - project_plane_v3_v3v3(proj, ob->obmat- [x], rv3d->viewinv[2]); - const float proj_length_sq = len_squared_v3(proj); - if (proj_length_sq > 1e-5f) { - return false; - } - } - return true; } ```

Philipp Oeser commented

2020-01-09 18:03:31 +01:00

Changed status from 'Needs Triage' to: 'Confirmed'

Campbell Barton commented

2020-01-15 16:18:13 +01:00

Changed status from 'Confirmed' to: 'Archived'

Campbell Barton closed this issue

2020-01-15 16:18:13 +01:00

Campbell Barton self-assigned this 2020-01-15 16:18:13 +01:00

Campbell Barton commented

2020-01-15 16:18:13 +01:00

An issue with hiding the frame means these are hard to control/select.

We could hade some logic to hide the frame only when disable-selection is set, although this seems a bit arbitrary.

Closing since this is working as intended.

An issue with hiding the frame means these are hard to control/select. We could hade some logic to hide the frame only when disable-selection is set, although this seems a bit arbitrary. Closing since this is working as intended.

CobraA commented

2020-01-15 17:18:30 +01:00

In #69967#849899, @ideasman42 wrote:
An issue with hiding the frame means these are hard to control/select.

Closing since this is working as intended.

Sure ,this is not particularly a bug but should be a known issue and not just mark the report invalid.

And like what @lichtwerk have said it's getting in the way, so it's not arbitrary as the background images usabilty has changed and brought this problem.

We could hade some logic to hide the frame only when disable-selection is set, although this seems a bit arbitrary.

Yes, adding some logic to hide the frame only when disable-selection will solve it & make it similar to what we had in the 2.7.

> In #69967#849899, @ideasman42 wrote: > An issue with hiding the frame means these are hard to control/select. > > > Closing since this is working as intended. Sure ,this is not particularly a bug but should be a known issue and not just mark the report invalid. And like what @lichtwerk have said it's getting in the way, so it's not arbitrary as the background images usabilty has changed and brought this problem. > We could hade some logic to hide the frame only when disable-selection is set, although this seems a bit arbitrary. Yes, adding some logic to hide the frame only when disable-selection will solve it & make it similar to what we had in the 2.7.

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Background Images issue when having opposite ones or Aligned to View. #69967