Duplicating object with cloth physics resets Cloth Cache Start and End values to 1 - 250 #52963

New Issue

jiiim · 2017-09-30T23:15:41+02:00

jiiim commented

2017-09-30 23:15:41 +02:00

System Information
OSX Windows

Blender Version
Broken: 2.79 and previous

Short description of error
Duplicating an object with cloth physics resets Cloth Cache Start and End values to 1 - 250
Also using linked duplicate and "Make Links -> Modifiers" does not retain the values

Exact steps for others to reproduce the error
Create mesh object
Add a cloth physics selection via physics tab
move the Cloth Cache Start and End values or just the End value
Duplicate the object with Shift-D
View the settings on the new object

Also setting the duplicate as linked duplicate (Alt-d) and Make link (alt-l) perform the same behavior

**System Information** OSX Windows **Blender Version** Broken: 2.79 and previous **Short description of error** Duplicating an object with cloth physics resets Cloth Cache Start and End values to 1 - 250 Also using linked duplicate and "Make Links -> Modifiers" does not retain the values **Exact steps for others to reproduce the error** Create mesh object Add a cloth physics selection via physics tab move the Cloth Cache Start and End values or just the End value Duplicate the object with Shift-D View the settings on the new object Also setting the duplicate as linked duplicate (Alt-d) and Make link (alt-l) perform the same behavior

jiiim commented

2017-09-30 23:15:41 +02:00

Changed status to: 'Open'

jiiim commented

2017-09-30 23:15:41 +02:00

Added subscriber: @coffeeDrinker

ronan ducluzeau commented

2017-10-01 14:14:54 +02:00

Added subscriber: @zeauro

ronan ducluzeau commented

2017-10-01 14:14:54 +02:00

It is not a bug. As mentioned in report, it always worked as is. It is rather a known limitation or a badly designed feature.

When you duplicate a mesh object , some of its data may be linked but it does not apply to simulate modifiers.
New object have a new simulate modifier with a new cache specific to this object.

To use the same cache, you can group original object and re-use group instance instead of duplicating object.
Or you can bake simulation in a specific .blend and re-use cache on another .blend by using external cache option.

Unretained cache values may be an indirect way to warn the user that another object refers to another cache.
It may be perceived as an inefficient and inappropriate way to d o it. But in this case : it is a design issue, not a bug.

Development target for modifiers is to create nodes to replace modifiers stack.
https://wiki.blender.org/index.php?title=User:Lucarood/Modifier_Nodes/Proposal

When object will support a node tree containing start/end values for cache, problem will no longer exist.

It is not a bug. As mentioned in report, it always worked as is. It is rather a known limitation or a badly designed feature. When you duplicate a mesh object , some of its data may be linked but it does not apply to simulate modifiers. New object have a new simulate modifier with a new cache specific to this object. To use the same cache, you can group original object and re-use group instance instead of duplicating object. Or you can bake simulation in a specific .blend and re-use cache on another .blend by using external cache option. Unretained cache values may be an indirect way to warn the user that another object refers to another cache. It may be perceived as an inefficient and inappropriate way to d o it. But in this case : it is a design issue, not a bug. Development target for modifiers is to create nodes to replace modifiers stack. https://wiki.blender.org/index.php?title=User:Lucarood/Modifier_Nodes/Proposal When object will support a node tree containing start/end values for cache, problem will no longer exist.

Ray molenkamp commented

2017-10-07 02:19:28 +02:00

Added subscriber: @LazyDodo

Ray molenkamp commented

2017-10-07 02:19:28 +02:00

Changed status from 'Open' to: 'Archived'

Ray molenkamp closed this issue

2017-10-07 02:19:28 +02:00

Ray molenkamp self-assigned this 2017-10-07 02:19:28 +02:00

Ray molenkamp commented

2017-10-07 02:19:28 +02:00

@zeauro when you triage a ticket as 'not a bug' you can archive them

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Duplicating object with cloth physics resets Cloth Cache Start and End values to 1 - 250 #52963