|On this page|
This node reads an image file and automatically traces it, generating a set of faces around areas exceeding a certain brightness threshold. You can control this threshold and the resolution of the resulting faces.
If geometry is wired to this, it will instead trace one of the 2d volumes in the input, such as heightfields.
The image is fit to a 1.0 X/Y square preserving aspect ratio.
Uses / Works in Relation With
Commonly followed by an Extrude SOP to generate beveled objects from logos, scans of geographical maps, etc. It can be animated by reading in a series of images.
Layer to Trace
The name or primitive number of the layer to trace on the input.
If none is present, first primitive will be traced. It must be a two dimensional volume, such as created by heightfield tools or the Volume Slice node.
Position of center of traced image
Scale of traced image.
Rotation about the center of the image.
Minimum brightness level that should be traced.
Add Point Texture
Toggles the creation of point texture UV coordinates.
What channel of the image to use for tracing. Mono will use the brightness of the channel, and red, green, blue and alpha will use those channels if present.
Name of the file to use.
Scale to Size
Loads the file at the specified resolution rather than its actual resolution.
The path to the COP to use.
Which frame(s) to use from a cop composed of a sequence of images.
Which planes to use as the source.
Attempts to remove borders from the trace.
The width of border to remove.
Enables the manual Step Size option
The distance between adjacent points.
Attempts to round corners.
Value controlling corner smoothing.
Fit to Curves
Attempts to map Bezier curves to trace.
Controls the accuracy of curve fitting.
Convert to Poly
Converts Fit to Curves to Polygons.
Level of Detail
Density of Polygon points.
Bridges all holes in the output for proper rendering.
Set this to Black for tracing white shapes on a black background, White for tracing black shapes on a white background, or Same as (0,0) to use the color of pixel (0,0) in the image to automatically guess the background color. For image sequences, you’ll usually want this set to Black or White, in case the shape overlaps pixel (0,0).
The boundary value to use in Custom mode.
What should be done if the specified file does not exist on disk. By default, if no file of the given name exists, the SOP will error. This can be troublesome if the input rotosequence has holes.