Interface Stroke

Where the stroke sits relative to the geometric edge. Default 'center'.

Per CanvasRenderingContext2D.setLineDash — empty/omitted = solid.

Miter join fallback threshold. When the miter length exceeds miterLimit * width / 2, the join falls back to a bevel. Default 10 (matching Canvas2D). SVG's default is 4; consumers that want SVG fidelity should set this explicitly when constructing strokes from SVG sources where the attribute was omitted.

Max width ratio (greater / lesser) at which a non-bevel join is preserved when vertexWidths causes adjacent segments to differ. Beyond this ratio the join falls back to bevel. Default 1.5. Ignored when vertexWidths is absent.

Per-anchor RGBA, flat (length = 4 × countPathAnchors(path)). Each value in 0..1. Arc-length interpolated across the tessellated ribbon between consecutive anchors. When set, paint is still required — its opacity (and color, as a placeholder) flow through the shader.

Per-anchor stroke width (length = countPathAnchors(path)). When set, the tessellator interpolates half-widths along each segment to produce a tapered ribbon. width is used as the fallback for any anchor whose entry is missing or non-finite. Pressure-driven pencil strokes use this; pair with pressureToWidth to derive widths from stylus input.

Joins between adjacent segments whose widths differ by more than varyingWidthJoinThreshold (default 1.5×) are forced to bevel regardless of the join setting — miter math is unstable when widths vary across the corner; smooth round joins with mismatched widths are a future enhancement.