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 Command
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.