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Edge & Vertex Slide

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Edge & Vertex Slide
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Introduction​

Edge and Vertex Slide allows you to move geometry along the existing surface of your mesh. Unlike a standard move operation, which can distort the object's volume, sliding constrains the movement to the existing edges, preserving the overall shape while adjusting topology.

Resources

Access guides on sliding geometry and maintaining curvature.

Links

Explore Blender's Edge and Vertex Slide tools.

Videos

Watch tutorials on refining mesh topology.

Basic Usage​

Vertex Slide​

  1. Select: Select one or more vertices.
  2. Activate: Press G twice (G, G).
  3. Slide: Move the mouse to slide the vertex along one of its connected edges.
  4. Confirm: Left-click to confirm.

Edge Slide​

  1. Select: Select an edge or an edge loop (Alt + Click).
  2. Activate: Press G twice (G, G).
  3. Slide: Move the mouse to slide the edge between the adjacent edge loops.

Advanced Controls​

While the slide tool is active (before confirming):

  • Even (E): Forces the sliding edge to match the shape of the adjacent edge loop.
  • Flipped (F): When "Even" is active, this toggles which adjacent loop is used as the reference shape.
  • Clamp (Alt or C): Toggles clamping, allowing you to slide vertices beyond the end of the edge (extending the edge direction).

Summary​

Edge and Vertex Slide are critical for refining topology without destroying the object's silhouette.

Key Takeaways:

  • Shortcut: G, G is the universal slide shortcut.
  • Preserves Volume: Keeps vertices on the existing "rails" of the mesh.
  • Even Mode: Essential for straightening edge loops or matching curvature.

Documentation for Methodology​

What to document when using Slide Tools

In Your Method Section​

Mention the use of slide tools when discussing topology refinement or edge flow correction. It is often a sub-step in a larger modeling process.

In Your Decision Log​

Record the following when using this technique:

  • Purpose (e.g., "Redistributing vertices for better deformation" or "Sharpening a corner")
  • Use of "Even" mode (if used to straighten lines)

Verification​

Check that vertices haven't been merged unintentionally (unless Auto Merge is on). Ensure that sliding hasn't created overlapping geometry.

Example Methodology Statement​

"After adding the loop cuts, the vertices were adjusted using Vertex Slide (GG) to evenly distribute the topology across the curved surface, ensuring smooth shading."