Module shading 

Shaded fills — gradient patterns and Gouraud-shaded triangles.

Replaces Splash::shadedFill and Splash::gouraudTriangleShadedFill.

Module layout (named for orientation; visibility varies)

• axial — crate::AxialPattern: linear gradient along an axis vector
• radial — crate::RadialPattern: gradient between two circles
• function — crate::FunctionPattern: PDF function sampled per pixel
• gouraud — gouraud_triangle_fill: vertex-coloured triangle scan

Entry point

shaded_fill is a thin wrapper around fill::fill / fill::eo_fill that passes the pattern as a PipeSrc::Pattern. The gradient patterns implement Pattern and are injected by the caller (typically pdf_bridge).

Modules

axial

Axial (linear) gradient pattern (PDF §8.7.4.5, type 2).

function

Function-based shading pattern.

gouraud

Gouraud-shaded triangle fill — Splash::gouraudTriangleShadedFill.

radial

Radial gradient pattern (PDF §8.7.4.5, type 3).

Functions

shaded_fill

Fill path using a shading pattern as the colour source.