Secondary Colour Grading > Modifying Geometries >

# Adjusting Tangents and Vertices

Adjust the shape of a geometry by manipulating its tangents and vertices. You can:

- Modify the position of vertices and tangents.
- Add and remove vertices and tangents.
- Break tangents.

Moving Vertices and Tangents

In the Player, you can move vertices and tangents to adjust the shape of a geometry.

To move vertices and tangents:

1. If you are working with a basic shape, right-click it in the Player to convert it to a free-form geometry.
2. In the Secondaries menu, enable Move.
3. Do any of the following:
   - To move a vertex, drag it in the Player.
   - To move multiple vertices, drag from anywhere on the screen without vertices. Then draw a selection box around the vertices you want to move and drag them in the Player.
     TipTo deselect multiple vertices, click away from the selected ones.
   - To modify the shape or curve of a side, move the adjacent tangents. Drag a tangent handle to change its position.

Adding and Removing Vertices

You can add and remove vertices from a geometry. When you add or remove a vertex, the curve is redrawn according to the change of shape.

To add vertices:

1. If you are working with a basic shape, right-click it in the Player to convert it to a free-form geometry.
2. In the Secondaries menu, enable Add Pts or press A.
3. In the Player, move the mouse over the mask border of the geometry you want to modify.

   The current position on the geometry is highlighted.

4. Click the geometry where you want to add a vertex.

   The vertex is added to the geometry.

To remove vertices:

1. In the Secondaries menu, enable Del Pts or press D.
2. In the Player, move the mouse over the mask border of the geometry you want to modify.

   The current vertex on the geometry is highlighted.

3. Click the highlighted vertex.

   The vertex is deleted from the geometry. The shape of the geometry is adjusted according to the change.

Breaking and Repairing Tangents

You can separate two tangent handles (break the tangent) and move them separately. You can also repair broken tangents.

To break and repair tangents:

1. To break and move a tangent handle, Ctrl-click the tangent handle and drag it.
2. To repair a broken tangent handle, Ctrl-click it.