Manual/Graph/Global Style
There are two sets of style features to affect the look of the knot: Knot Display and Knot Style.
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Knot Display
The style options in Knot Display affect the entire graph, and they affect how the graph is displayed but its shape is not altered. These features are those that can be changed on an exported SVG without changing the path control points. These options can be selected on the Knot Display dialog.
Colors
Depending on the design there may be multiple ropes that make the knot, specifying multiple colors will cycle the defined colors when drawing each rope. If only a single color is defined, the entire knot will have that color. Knotter also supports automatic coloring that assigns a distinct color to each rope in the knot, this may be useful to study the topology of that knot.
A knot with a single color
The same knot with two user defined color
The same knot with automatic coloring
Width
The width is the thickness of the rope tied in the knot.
Width 30px
Width 5px
Joint Style
If the knot style results in some sharp angles, this affects how they are displayed.
Bevel
Miter
Round
Pattern
Change the pattern used to draw the knot. Note that SVG export does not support pattern and that antialiasing may blur the pattern details.
Solid Pattern
Dense 2 Pattern
Diagonal Cross Pattern
Borders
Borders can be customized via the Borders dialog. Each new border is added on top of the previous one and has its own color and width.
A knot without borders
A knot with three borders
Knot Style
The options in Knot Style instead affect the shape itself, they can be customized on a subset of the graph. Their exact meaning depends on the edge type and cusp shape. Every feature in Knot Style can be configured using the Knot Style dialog and on a per-node basis via the Selection Style dialog.
Curve
Size of the curve control handles, its behaviour depends on the edge type. In general, it controls the way a ropes approaches the center of an edge and the cusp point.
Gap
Distance between the ends of a loop then a rope passes under another rope. It may change meaning for different edge types.
Angle
Minimum angle between edges for which a cusp shall be drawn.
Distance
Distance of the cusp point from the node position.
Style
The style used to draw a cusp.
