lineModifiernode

Line Modifier Attributes

Shape: Determines the shape of the line modifier. There will be no effect outside the bounds of the selected shape. The Dropoff graph attribute is defined relative to the shape, such that the right edge of the dropoff is the outer edge of the shape, and the left is the shape’s center.
Width Scale: Multiplies the current line width. A value of 1.0 will have no effect and a value of zero will scale the width to zero.
Width Offset: Adds on to the current line width. A value of 0.0 will have no effect and a value of 1.0 will increase the width by one.
Opacity Scale: Multiplies the current line opacity. A value of 1.0 will have no effect and a value of zero will scale the opacity to zero.
Opacity Offset: Adds on to the current line opacity. A value of 0.0 will have no effect and a value of 1.0 will make the lines fully opaque.
Surface Offset: Adds on to the current line surface offset. A value of 0.0 will have no effect and a value of 1.0 will increase the offset by 1.0. Negative values will clamp on when an offset of 0 is achieved.
Line Extend: Adds on to the current line extend. A value of 0.0 will have no effect and a value of 1.0 will increase the extend by 1.0. Negative values will clamp when an extend of 0 is achieved.
Modify Color: If this option is turned on the color value is blended with the line color based on the dropoff value.
Color: If Modify Color is turned on, then this color is blended into the local line color based on the dropoff value.
Dropoff: Determines the range of effect within the bounds of the modifier. If the dropoff is set to a constant value of 1.0 (horizontal line) then lines will be uniformly modified inside the bounds of the dropoff shape, with a hard transition at the shape edge. If the right edge of the dropoff is instead ramped down to zero the transition will be gradual, with no modulation at the shape edge, and with increasing modulation towards its center. The dropoff graph attribute is defined relative to the shape, such that the right edge of the dropoff is the outer edge of the shape, and the left is the shape’s center.
Dropoff Noise: Modulates the dropoff value with a 3D noise. It can provide variation for the parameters being modulated. For example the tube width can be randomized or wiggled in a noisy fashion using this attribute.
Noise Frequency: Controls how detailed the Dropoff Noise is. Lower values result in a smoother noise. The 3D noise is defined relative to the local space of the line modifier shape.

Brush Tube Attributes

In order for these settings to have any effect they require that a Paint Effects brush be used with tubes turned on.

Force: Acts as a force pushing tubes away from the center of the line modifier shape. Positive values push away from the center while negative values push towards the center. To have an effect this requires that a brush be used with tubes turned on. For example, use this to push Paint Effects trees as if with the wind.
Directional Force: Acts as a force pushing tubes along the local x axis of the line modifier shape. To have an effect this requires that a brush be used with tubes turned on.
Displacement: Acts as a displacement pushing tubes away from the center of the line modifier shape. Positive values push away from the center while negative values push towards the center. This is similar to the force attribute, but tube segments further down the tube are not affected by the offset. To have an effect this requires that a brush be used with tubes turned on.
Directional Displacement: Acts as a displacement pushing tubes along the local x axis of the line modifier shape. To have an effect this requires that a brush be used with tubes turned on. This is similar to the directional force attribute, but tube segments further down the tube are not affected by the offset.
Tube Scale: Can be used to scale the length and width of generated Paint Effects tubes. A value of 1.0 will have no effect and a value of 0.0 scales the tubes to nothing, resulting in no tubes generated. The behavior is similar to modifying the brush’s Global Scale. To have an effect this requires that a brush be used with tubes turned on.
Tube Dropout: Can be used to reduce the number of Paint Effects tubes generated. A value of 0.0 will have no effect and a value of 1.0 will result in no tubes generated. To have an effect this requires that a brush be used with tubes turned on.
Leaf Scale: Multiplies the size of leaves used by the Paint Effects brush. A value of 1.0 will have no effect and a value of 0.5 will reduce leaf size by half. To have an effect this requires that a brush be used with tubes turned on.
Leaf Dropout: Adds on to the current leaf dropout value used by the Paint Effects brush. A value of 0.0 will have no effect and a value of 1.0 will increase the dropout by 1.0. To have an effect this requires that a brush be used with tubes turned on.
Flower Scale: Multiplies the size of flowers used by the Paint Effects brush. A value of 1.0 has no effect and a value of 0.5 reduces flower size by half. To have an effect this requires that a brush be used with tubes turned on.
Flower Dropout: This value adds on to the current flower dropout value used by the Paint Effects brush. A value of 0.0 has no effect and a value of 1.0 increases the dropout by 1.0. To have an effect this requires that a brush be used with tubes turned on.
Branch Dropout: This value adds on to the current branch dropout value used by the Paint Effects brush. A value of 0.0 has no effect and a value of 1.0 increases the dropout by 1.0. To have an effect this requires that a brush be used with tubes turned on.
Twig Dropout: This value adds on to the current branch dropout value used by the Paint Effects brush. A value of 0.0 has no effect and a value of 1.0 increases the dropout by 1.0. To have an effect this requires that a brush be used with tubes turned on.