Select more/less functions do not work for curves. #47543

New Issue

Dan · 2016-02-23T14:05:55+01:00

Dan commented

2016-02-23 14:05:55 +01:00

System Information
Windows 7 64 Home, nVidia GTX 970

Blender Version
Broken: 2.76b (f337fea), 2.77 test build 2 (2.76.11) (da81227)

Short description of error
Select more/less functions do not work for curves. Although these functions are present in edit mode while editing curves, they have no effect on them.

On curves with no handles, they should function no differently than they would with edges/vertices. It may be a bit trickier with handles though, as curve handles are selected no differently than curve points, thus using select less/more may not lead to useful results.

It should be noted that you can even use select more/less on grease pencil strokes, just not curves!

Exact steps for others to reproduce the error
Select points on a curve in edit mode, then attempt to use select more or select less.

**System Information** Windows 7 64 Home, nVidia GTX 970 **Blender Version** Broken: 2.76b (f337fea), 2.77 test build 2 (2.76.11) (da81227) **Short description of error** Select more/less functions do not work for curves. Although these functions are present in edit mode while editing curves, they have no effect on them. On curves with no handles, they should function no differently than they would with edges/vertices. It may be a bit trickier with handles though, as curve handles are selected no differently than curve points, thus using select less/more may not lead to useful results. It should be noted that you can even use select more/less on grease pencil strokes, just not curves! **Exact steps for others to reproduce the error** Select points on a curve in edit mode, then attempt to use select more or select less.

Dan commented

2016-02-23 14:05:55 +01:00

Changed status to: 'Open'

Dan commented

2016-02-23 14:05:55 +01:00

Added subscriber: @DoNotCare

Sergey Sharybin commented

2016-02-23 14:16:00 +01:00

Added subscriber: @Sergey

Sergey Sharybin commented

2016-02-23 14:16:00 +01:00

Can't really reproduce the issue. That's why it's really important to provide .blend file which demonstrates the issue, even if the steps sounds simple for you.

Dan commented

2016-02-23 14:59:49 +01:00

Alright, I've figured out the actual issue but I cannot figure out how to edit this bug report. I thought I'd already tested this earlier, but apparently I imagined it.

The real issue is that "select less" does not work on full curve selections that are non-cyclical (closed). There should be no need for a .blend file as I've reproduced this on each of the line curve primitives using the factory default settings:

Create a curve primitive (Bezier, Nurbs Curve, or Path), enter edit mode, select all (points), use select less. Nothing will happen. You can also duplicate the curve many times, and with everything selected, still nothing will happen. The expected result should be that each end of each individual non-cyclical curve should be deselected. Repeating the function should work as it already does.

Alright, I've figured out the actual issue but I cannot figure out how to edit this bug report. I thought I'd already tested this earlier, but apparently I imagined it. The real issue is that "select less" does not work on full curve selections that are non-cyclical (closed). There should be no need for a .blend file as I've reproduced this on each of the line curve primitives using the factory default settings: Create a curve primitive (Bezier, Nurbs Curve, or Path), enter edit mode, select all (points), use select less. Nothing will happen. You can also duplicate the curve many times, and with everything selected, still nothing will happen. The expected result should be that each end of each individual non-cyclical curve should be deselected. Repeating the function should work as it already does.

Sergey Sharybin commented

2016-02-23 15:37:50 +01:00

The crucial step was "Select All". This leads to a situation when behavior of "Select Less" is malformed: it's not clear where one would expect to start deselecting -- middle of a spline, endpoints, single endpoint; what would be behavior for cyclic splines here. Surely there are some semi-reasonable assumptions are possible for splines (where cyclic is a flag and you still have spline start/end CV), but for meshes it'll be really a russian roulette.

So now those tools having predictable and matching behavior for all meshes, curves and surfaces which simply does nothing in such a malformed state.

Surely some tweaks to behavior are possible, but its not a bug and should be handled outside of the bug tracker.

The crucial step was "Select All". This leads to a situation when behavior of "Select Less" is malformed: it's not clear where one would expect to start deselecting -- middle of a spline, endpoints, single endpoint; what would be behavior for cyclic splines here. Surely there are some semi-reasonable assumptions are possible for splines (where cyclic is a flag and you still have spline start/end CV), but for meshes it'll be really a russian roulette. So now those tools having predictable and matching behavior for all meshes, curves and surfaces which simply does nothing in such a malformed state. Surely some tweaks to behavior are possible, but its not a bug and should be handled outside of the bug tracker.

Bastien Montagne commented

2016-03-01 14:54:57 +01:00

Changed status from 'Open' to: 'Archived'

Bastien Montagne closed this issue

2016-03-01 14:54:57 +01:00

Bastien Montagne self-assigned this 2016-03-01 14:54:57 +01:00

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Select more/less functions do not work for curves. #47543