hm_getsurfacenormal

Gets the normals of the surfaces connected to the node or point whose ID is given as the argument.

Syntax

hm_getsurfacenormal entityType entityID

Type

HyperMesh Tcl Query

Description

Gets the normals of the surfaces connected to the node or point whose ID is given as the argument.

Inputs

entityType: The type of entity. Only nodes or points are supported.
entityID: ID of the entity.

Examples

The result is returned as a list: { nsurfs x1 y1 z1 surf_id1 x2 y2 z2 surf_id2 … }

Where nsurfs is the number of surfaces attached to the point, xn yn zn are direction cosines of the normal of the surface having ID surf_idn. If no surfaces are attached, the list consists of the single number 0.

Suppose that node with ID 100 is located on a shared edge between surfaces having IDs 10 an 11. To retrieve the normals at attached surfaces:

set node_norms [ hm_getsurfacenormal nodes 100 ]
   2 1.697E-001 7.988E-001 5.771E-001 10 1.699E-001 7.969E-001 5.796E-001 11

To get x cosine of the normal to surface 10 at this node:

lindex $node_norms 0
   1.697E-001

This function queries all surfaces connected to a given node to obtain the normal on each surface at a given node or point location.

Errors

None.