Notch Notch Manual 0.9.23
 Light | Dark
Freehand Mask

Freehand Mask

Generates an image mask from hand drawn shapes.



Method #

This node generates a black and white mask sketched by clicking and dragging with the left most button in the viewport. When the right button is pressed the mask is cleared.

Notch must be paused to draw new masks.

This node can be connected to any node which accepts an image input.


These properties control the core behaviours of the node.

ActiveEnables or disables the effect. Disabling the effect means it will no longer compute, so disabling a node when not in use can improve performance.
Preview In ViewportPreview the effect blended with alpha in the viewport.
Preview RGB In ViewportPreview the colour values in the viewport.
Preview Alpha In ViewportPreview the alpha values in the viewport.
WidthThe resolution of the effect along its width.
HeightThe resolution of the effect along its height.
Update Time ModeHow the generator updates with relation to the timecode.
  • Locked To Timecode : The generator animations are locked to the timecode and the same time will always yield the same result.
  • Running / Loopable : The generator animations are disconnected from the timecode and will loop seamlessly at the end of the layer.
Static Image (Process Only Once)Only process the image once, making a more efficient scene. Animated Post-FX nodes will not function with this enabled.
FeatherMakes a blur which follows around the edges of the curve mask shape.
Show Point PropertiesShows the position and bezier controls for all the points individually in the property panel.
Editor ColourChange the colour of the curve mask line, visualised in the viewport.

These properties control how the generators are coloured and blended with other images.

ColourChange the colour of the generated image.
Blend AmountThe amount the generator is blended with the output.
Blend ModeChoose how the image blends with the scene. See Blend Modes for details.
  • Solid : The generator is solid, with a filled alpha channel.
  • Blend : The generator RGBA values have matching alpha channels.
  • Pre-Mul Blend : The RGB values are solid white, and the generator colours are stored in the alpha channel alpha. Usually gives the best results for colour blending.

These properties contain an array of all the points included to create the mask.


NameDescriptionTypical Input
Colour RampSpecify a range of colours the generator can use through its gradient.Colour Ramp
Transform ModifierApply the transforms of another node to this node.Null
Target NodeModifiy the rotations of the node to always direct the z axis towards the input.Null
Local Transform OverrideApply the transforms of another node to this node, relative to its parent.Null