Slide a vertex
Move a selected vertex along an existing connected edge. This constrained edit differs from a free move.
Before you start
Connect Codex to Show3D and identify the mesh and vertex to adjust. This operation currently uses the agent’s mesh-edit actions rather than a dedicated interface tool.
Use the operation
Reposition a vertex toward a specified neighboring vertex or direction while keeping its connections.
- Ask Codex to inspect the mesh topology and identify both the source vertex and intended neighbor.
- Describe a small movement, for example: “Slide this corner 20% toward the next vertex on the rim, keeping the other corners fixed.”
- Inspect the resulting face shapes. If topology changed since inspection, have Codex inspect again before the next edit.
Controls and choices
| Controls | What changes |
|---|---|
| Target | At a vertex with several connected edges, specify which neighboring vertex or direction to follow. The operation should not guess the intended branch. |
| Factor | 0.2 moves one fifth of the distance to the chosen target. Reaching the neighbor’s position does not automatically weld the two vertices. |
| Merge when needed | Use Merge when the goal is to combine vertices topologically; use Slide to adjust spacing while retaining distinct vertices. |
See what changes
Before
A vertex on an edge
After
The vertex moved along the edge
Check the result
Check that the adjacent faces remain usable and the intended edge spacing improves. Reduce the movement if a face becomes too narrow or folds.
Practice in Show3D
Open the editor and follow the steps with your own scene.