Trimble Business Center

Hello,

We use the feature code library for field to finish purposes.  In TBC we process our feature library for our field work and have line control codes for various curved 3d lines.  In TBC these become line strings.

In Civil 3d the same, a 3d curved line, would be represented by feature lines.

TBC will not export fully functional items to Civil 3d, i.e. like line string to feature line (and this is understandable, these are proprietary solutions to curved 3d lines).  So we export dxf files.

When a curved 3d line string is exported from TBC to a dxf file, the curved portions of the line strings, become multi-nodal segments that are interpolated along the line string arc.

We have noticed that there is no way to control the rate at which the multi-nodes are created along the arc.  In Civil 3d, you set a mid ordinate value.  I have not been able to find a setting that governs this in TBC.

Second, when we export a 3d curved line string that was generated by four or more points the rate of multi-node creation is much, much more than the same exact 3d curved line string that was generated by only three points.  That seems really weird.  What should govern is the rate of change of the arc, the radius and how close to the real thing the user wants the software to produce.  This should be done by setting an allowable mid ordinate distance.  We aren't aware that TBC has this functionality or setting flexibility, but should.

#1, please add this to the to do list.

#2, does anyone have a better understanding of how this works within TBC to dxf?

Thank you for your input.  I am excited to hear Trimble respond.

Hello,

We use the feature code library for field to finish purposes.  In TBC we process our feature library for our field work and have line control codes for various curved 3d lines.  In TBC these become line strings.

In Civil 3d the same, a 3d curved line, would be represented by feature lines.

TBC will not export fully functional items to Civil 3d, i.e. like line string to feature line (and this is understandable, these are proprietary solutions to curved 3d lines).  So we export dxf files.

When a curved 3d line string is exported from TBC to a dxf file, the curved portions of the line strings, become multi-nodal segments that are interpolated along the line string arc.

We have noticed that there is no way to control the rate at which the multi-nodes are created along the arc.  In Civil 3d, you set a mid ordinate value.  I have not been able to find a setting that governs this in TBC.

Second, when we export a 3d curved line string that was generated by four or more points the rate of multi-node creation is much, much more than the same exact 3d curved line string that was generated by only three points.  That seems really weird.  What should govern is the rate of change of the arc, the radius and how close to the real thing the user wants the software to produce.  This should be done by setting an allowable mid ordinate distance.  We aren't aware that TBC has this functionality or setting flexibility, but should.

#1, please add this to the to do list.

#2, does anyone have a better understanding of how this works within TBC to dxf?

Thank you for your input.  I am excited to hear Trimble respond.