*morphmanualapplyenvelope

Syntax

*morphmanualapplyenvelope e_entity_type e_mark_id f_entity_type f_mark_id mode mbias fbias integ envelope undisplayed

Type

HyperMesh Tcl Modify Command

Description

This command can only be used after *morphmanualinit.

If mode is 0, no other information is required, the difference in positions of the nodes between the *morphmanualinit command and the *morphmanualapplyenvelope is converted into a morph.

If mode is 1, then temporary handles are created for all moving and fixed nodes to determine the stretching of the affected elements. If integ is 0, a general domain is temporarily created for the affected elements. If integ is 1, the domains currently in the model are used. If integ is 2, 1D, 2D, 3D, and edge domains are temporarily created for the affected elements but the 2D domains are not partitioned. If integ is 3, then handle influences are applied using a spatial relationship rather than through a domain. If integ is 4, only the selected moving nodes are moved and all others are held fixed. If integ is 5, 1D, 2D, 3D, and edge domains are temporarily created for the affected elements and the 2D domains are partitioned. Any handles created due to partitioning are moved based on their distance from the moving and fixed nodes. If integ is 6, then handle influences are applied using the Kriging algorithm. If integ is 7, then handle influences extend only up to a given distance (if envelope is positive) or a given multiple of the applied perturbations (if envelope is negative) away from the moving nodes.

The bias factors function as they would for handles except that all moving nodes will have the mbias value and all fixed nodes will have the fbias value.

If mode is set to 2, then the previous *morphmanualapplyenvelope command is rejected and the nodes are left in their manually perturbed positions. The model is still 'initialized' and thus another *morphmanualapplyenvelope command can be called after a reject. To restore the model to the way it was, call *morphmanualrestore.

If mode is set to 3 then the memory set aside by *morphmanualinit is freed, and *morphmanualapplyenvelope can no longer be used until another *morphmanualinit command is called. It is good practice to use this mode to free memory which is no longer needed.

If integ is set to 3, 6, or 7, nodes on undisplayed elements and components can be morphed, fixed, or excluded depending on the value sent in for undisplayed.

Inputs

e_entity_type

Must be set to elems.

e_entity_mark

The mark ID of the affected elements. Valid values are 1 and 2.

f_entity_type

Must be set to nodes.

f_entity_mark

The mark ID of the fixed nodes. Valid values are 1 and 2.

mode

0 - Apply as node perturbations

1 - Apply as handles

2 - Reject last *morphmanualapplyenvelope command

3 - Clear memory set aside by *morphmanualinit

mbias

Bias factor for moving nodes on affected elements.

fbias

Bias factor for fixed nodes on affected elements.

integ

0 - Free edges (a single general domain)

1 - Use existing domains

2 - Inferred edges (1D, 2D, 3D, and edge domains - no partitioning)

3 - Morph all nodes using a proximity algorithm

4 - Morph all moving nodes and fix the unselected nodes

5 - Partitioned edges (1D, 2D, 3D, and edge domains with partitioning)

6 - Morph all nodes using the Kriging algorithm

7 - Morph all nodes within an envelope around the moving nodes

envelope

If positive, all nodes beyond the given distance away from the moving nodes will be fixed.

If negative, all nodes beyond a distance calculated by multiplying the total perturbation of each moving node by the absolute value of the envelope and extended away from each moving node will be fixed.

If integ is set to 7, the calculated distance defines an envelope around the moving nodes within which the morphing of those nodes will linearly taper from fully matching the nearest moving node to zero at the edge of the envelope. If any fixed nodes are within the envelope they will also reduce the morphing of nearby nodes.

undisplayed

If integ is set to 3, 6, or 7, nodes which are not displayed can be affected by the morphing. This defines how undisplayed nodes are handled:

0 - Morph nodes on undisplayed elements

1 - Fix nodes on undisplayed elements, they will function just like nodes on the fixed mark

2 - Exclude nodes on undisplayed elements, they will not be morphed nor affect the morphing

Example

To manually move nodes and apply them to the mesh as if they were handles using internally generated domains with inferred edges, then reject the changes:

*morphmanualinit
(any commands which move nodes)
*createmark nodes 1 21 22 23
*createmark elems 1 "all"
*morphmanualapplyenvelope elems 1 nodes 1 1 1.0 1.0 2 0.0 0
*morphmanualrestore

Errors

if { [ catch {command_name...} ] } {
   # Handle error
}

Version History

12.0.110