====== Partial Decimation ======

Reduce overall mesh resolution while keeping details you want.
{{:3d_modeling:blender:partial-decimation.jpg|}}

Use weight painting to indicate which areas of the model are affected more or less the decimate modifier.

**Set the whole mesh to a weight of 1**\\
  - Create a vertex group
  - Go into edit mode.
  - A slider called 'weight' appears, with a value of 1.
  - Click the 'assign' button to set the whole model to weight 1.

**Paint the areas you want to preserve**\\
  - Switch to weight paint mode. The 3D model looks red. This is weight 1.
  - Paint the areas you want to preserve. 
  - Set your brush to 0 to fully preserve the original resolution in those areas. 
  - Set your brush to a value between 0 and 1 if you want to reduce the resolution, but not as strongly as the rest of the model (0.4 for example).

**Set up a decimate modifier**
  - enter the vertex group in the modifier to see the result.