*geomvectorupdate
Updates vector entities using input geometries to set vector directions tangent to lines or normal to surfaces.
Syntax
*geomvectorupdate vector_mark_id geom_type geom_mark_id node_tol magnitude parlen reverse update_geom update_mag update_reverse
Type
HyperMesh Tcl Modify Command
Description
This command updates input vectors in such a way that vector direction coincides with line tangent or surface normal at closest to the node point on geometry.
Inputs
- vector_mark_id
- The mark of input vectors to update.
- geom_type
- The input geometry type. Valid values are:
- lines - If specified, then tangent at selected line is used for updated vector direction.
- surfs - If specified, then normal at selected surface is used for updated vector direction.
- geom_mark_id
- The mark of input lines or surfaces used to set vectors direction.
- node_tol
- If positive, then used as proximity tolerance for geometry points. This means that vector is not updated unless closest point of selected geometry is found within the distance specified by node_tol.
- magnitude
- Parameter that specifies the length of updated vector (except for the case when parameter parlen is not zero).
- parlen
- Parameter that specifies the method to calculate resulted vector length. Valid values are:
- 0 - The value specified by magnitude parameter used.
- 1 - Parametric value is used. For curve tangent this is the value of parametric curve derivative. For surface normal the value is defined by the length of cross product of surface parametric derivatives. Parameterization of curves and surfaces is normalized from 0 to 1.
- reverse
- Parameter that specifies direction of resulted vector. Valid values are:
- 0 - Direction coincides with parametric direction of curve or surface normal.
- 1 - Direction is opposite to parametric direction of curve of surface normal.
- update_geom
- A flag (0 or 1) to update vectors direction. If set to 1, then input geometry is used to update vectors direction.
- update_mag
- A flag (0 or 1) to update vectors magnitude. If set to 1, then vectors magnitude is updated.
- update_reverse
- A flag (0 or 1) to update vectors magnitude. If set to 1, then vectors magnitude is updated.
Example
*createmark lines 1 4
*createmark vectors 1 10
*geomvectorupdate 1 lines 1 -1.0 1.0 0 0 1 0 0
Errors
if { [ catch {command_name...} ] } {
# Handle error
}