Shape Keys

Shape keys allow for non-destructive mesh deformation, enabling smooth animations and morph targets without increasing poly count. They won't be necessary unless explicitly required.

Creating a Shape Key

1. Select Your Mesh: Choose the object that requires a shape key.

2. Navigate to the Object Data Tab: In the Properties panel, go to the Object Data Properties (green triangle icon).

3. Add a Shape Key: Under the Shape Keys section, click the + button. This creates the Basis key (default shape). Click + again to create a new shape key, which will store the edited version of the mesh.

4. Rename the Shape Key: Naming is crucial. Use clear, descriptive names that reflect the intended transformation, such as:

   • Lid_Open

   • Button_Pressed

   • Handle_Rotated

   • Cushion_Deformed

Example: Shape keys in the data tab (Blender)

Editing a Shape Key

1. Select the Shape Key: Ensure the new shape key (not the Basis) is active.

2. Enter Edit Mode: Press Tab or switch to Edit Mode.

3. Modify the Mesh: Move, scale, rotate or adjust vertices to create the desired deformation.

4. Exit Edit Mode: Press Tab to return to Object Mode. The transformation is stored in the selected shape key.

5. Test the Shape Key: Adjust the Value slider under the Shape Keys section (ranges from 0 to 1) to preview the effect.

Shape Keys and GLB Export

Once shape keys are added and properly named, they will be included in the exported GLB file.

• Ensure all transformations are applied (Ctrl + A > Apply All Transforms).

• Check that shape keys function correctly before exporting.

• Use File > Export > glTF 2.0 (.glb) and ensure Shape Keys are enabled in the export settings.