Use these options to set what happens when you select Mesh Tools > Paint Transfer Attributes Tool. In the Paint Attributes section there are some attributes unique to the Paint Transfer Attributes Weights Tool.
Specifies the name of the attribute being painted. When painting Transfer Attribute Weights, this is <nodename>.weights. Use this drop-down list to select other attributes to paint (for example, the transfer weights of other transfer attribute nodes).
Sets a filter so that only transfer attribute nodes display on the menu for the button above this one. You are painting Transfer Attribute weights with the tool, so you do not need to change this filter.
Select which paint operation you want to perform on the selected cluster.
Replaces the vertex weight with the weight set for the brush.
Adds the vertex weight to the weight set for the brush.
Scales the vertex weight by the weight factor set for the brush.
Averages the weights of adjacent vertices to produce a smoother transition between weights.
Set the weight value to apply when you perform any of the painting operations.
A value of 0 (black) indicates that the original (un-deformed) mesh value should be used, whereas a value of 1 (white) indicates that the value transferred from the source mesh should be applied. Any value in between blends between the two.
Set the minimum and maximum possible paint values. By default, you can paint values between 0 and 1. Setting the Min/Max Values you can extend or narrow the range of values.
Negative values are useful for subtracting weight. For example, if you set Min Value to -1, Value to -0.5, and select Add for the operation, you subtract 0.5 from the weight of vertices you paint.
Positive values are used as multipliers.
Select whether you want to clamp the values within a specified range, regardless of the Value set when you paint.
Turn this on to clamp the lower value to the Clamp Value specified below. For example, if you clamp Lower and set the lower Clamp Value to 0.5, the values you paint will never be less than 0.5, even if you set the Value to 0.25.
Turn this on to clamp the upper value to the Clamp Value specified below. For example, if you clamp Upper, set the upper Clamp Value to 0.75, and set Value to 1, the values you paint will never be greater than 0.75.
Set the Lower and Upper values for clamping.
Click Flood to apply the brush settings to all the weights on the selected cluster. The result depends on the brush settings defined when you perform the flood.
If you are painting a three channel attribute (RGB or XYZ), select the channel you want to paint. Attribute weight is a single channel attribute, therefore you do not need to change this setting.