Interface DrawCommandFactory

Functional Interface:

This is a functional interface and can therefore be used as the assignment target for a lambda expression or method reference.

@FunctionalInterface
public interface DrawCommandFactory

Turns a space and a style into a concrete DrawCommand.

The seam that lets one DrawBuilder serve every primitive: the geometry is captured when the builder is created and the presentation is applied when it is submitted, so there is one fluent chain rather than six near-identical ones.

Method Summary

Modifier and Type	Method	Description
DrawCommand.Primitive	create(DrawSpace space, DrawStyle style)	Build the command this factory was created for.

Method Details

create

DrawCommand.Primitive create(DrawSpace space,
 DrawStyle style)

Build the command this factory was created for.

The return type narrowed from DrawCommand to DrawCommand.Primitive. A lambda is unaffected, since its return type is inferred; an explicit implements DrawCommandFactory whose create was declared to return DrawCommand no longer overrides this and must narrow. The narrowing is what makes a batch unable to carry a highlight — see DrawCommand.Highlight.