Surface Class

The Surface is a path-based drawing API. A call to CreatePath is used to create a path, then one of StrokePath or FillPath is used to draw it.

This allows the users of Canvas to optimize for animation of either the path or the stroke/fill objects independently.

This also keeps the API minimal. There are no convenience functions in this class. Those are provided via higher-level classes, such as LineSegments or SurfaceUtil.

Show Uno properties and methods

Interface of Surface

Begin(DrawContext, framebuffer, float) uno

(TEMPORARY) This is the GL entrypoint to start drawing to a framebuffer.

CreatePath(IList<LineSegment>, FillRule) : SurfacePath uno

Creates a pth from the provided list of segments.

Dispose uno

Frees up all resources associated with this surface. All paths and prepared objects are invalid after a call to this method. However, whethere they are actually freed now, or when Unprepare or DisposePath is called is undefined. This means it must always be safe to call those two fucntions, even on an disposed Surface.

DisposePath(SurfacePath) uno

Disposes of a path object created by CreatePath.

Draw(DrawContext, Element, ISurfaceDrawable) uno

DrawLocal(ISurfaceDrawable) uno

Call this method instead of drawable.Draw directly. This will configure the canvas correctly.

ElementSize : float2 uno

End uno

Ends drawing. All drawing called after Begin and to now must be completed by now. This copies the resulting image to the desired output setup in Begin.