Perturbations are applied in layers. Only active layers are included when perturbing the mesh. This mechanism allows you to build subtle deformations on top of the base form. For example, you might Distribute
sin(5x)/5 in Layer 1 of slices to obtain a fivefold division, and then add some Manual ridges along the length in Layer 2. This works for both stacks and slices. Remember that the number slices in the mesh determines the resolution of the overall effect. The following demonstration shows pertubations applied for two layers in slices and three layers in stacks. Smooth shading has been turned OFF in the 'View' menu to show the actual mesh facets.
1. All layers off
2. Slices, Layer 1 only: Distribute Sin(5x)/5.
2. Slices, Layer 2 only: Manual Sin(7x)/7.
2. Slices, Layer 1 + 2.
2. Slices, Layer 1 + 2; Stacks, Layer 1: Manual sin(x)
2. Slices, Layer 1 + 2; Stacks, Layer 1 + 2 Manual sin(5x)/5
2. Slices, Layer 1 + 2; Stacks, Layer 1 + 2 + 3 Manual sin(3x)/3