---
title: "Options"
url: "https://help.maxon.net/c4d/en-us/Content/html/TOOLHAIRADDROOT-MDATA_MAINGROUP.html"
section_path: "Simulate Menu > The Simulation System > Hair > Tools, Functions, Modes > HAIR Tools > Add Guides > Options"
element_id: "TOOLHAIRADDROOT"
group_id: "MDATA_MAINGROUP"
description: "This is the radius of the tool itself, within which the guides will be painted onto the surface."
---

## Options

### Radius

Parameter ID: `HAIR_TOOL_ADDROOT_RADIUS` · Range: [0.00..+∞]

This is the radius of the tool itself, within which the guides will be **painted** onto the surface.

### Step

Parameter ID: `HAIR_TOOL_ADDROOT_STEP` · Range: [0..2147483647]

If you **paint** guides onto a surface using click & drag, this setting defines how often guides will be **painted** onto a surface. If this setting is given a value of **10**, guides will be set every 10 pixels for each mouse movement.

### Count

Parameter ID: `HAIR_TOOL_ADDROOT_COUNT` · Range: [1..2147483647]

This is the maximum number of guides that will be set per individual click or each time guides are set (**Step**).

### Length

Parameter ID: `HAIR_TOOL_ADDROOT_LENGTH` · Range: [0..+∞m]

This setting defines the length of the guides that will be **painted** onto the surface.

### Min Spacing

Parameter ID: `HAIR_TOOL_ADDROOT_MINSPACING` · Range: [0..+∞m]

This is the minimum distance between set guides.

### Interpolated

Parameter ID: `HAIR_TOOL_ADDROOT_INTERPOLATE`

If this setting is active, newly created guides will be interpolated between existing guides.

### Strength

Parameter ID: `HAIR_TOOL_ADDROOT_INTERPOLATE_STRENGTH` · Range: [0..100%]

Use this setting to adjust the degree of interpolation of the newly painted Guides. A value of **0%** will result in no interpolation (Guides will stand completely perpendicular to the surface). A value of **100%** will result in complete interpolation. Setting the value to **100%** is not advisable since Guides could result that penetrate the surface - something that should be avoided. A value of around **70%** will deliver the best results.

### Pressure

Parameter ID: `HAIR_TOOL_ADDROOT_PEN`

If you use a graphics tablet, use **Pressure** to define which setting (**None**, **Radius**, **Length**, **Count**) should be affected by the pen.