fl::ScaleUp Class Reference

Detailed Description

Effect wrapper that upscales delegate effects using bilinear interpolation.

ScaleUp renders a delegate effect at a lower resolution and then scales the result up to the target display size using bilinear filtering. This creates smooth interpolation between pixels, making the upscaling less noticeable than nearest-neighbor scaling.

Note

The delegate effect is rendered at the lower resolution defined by the XYMap passed to the constructor, then expanded to the display resolution.

Definition at line 68 of file scale_up.h.

#include <scale_up.h>

Inheritance diagram for fl::ScaleUp:

Collaboration diagram for fl::ScaleUp:

Public Member Functions
	ScaleUp (const XYMap &xymap, Fx2dPtr fx)
	Construct a ScaleUp effect wrapper.
void	draw (DrawContext context) override
	Render the effect by drawing delegate at low-res and scaling up.
void	expand (fl::span< const CRGB > input, fl::span< CRGB > output, u16 width, u16 height, const XYMap &mXyMap)
	Expand a low-resolution buffer to high-resolution using bilinear interpolation.
fl::string	fxName () const override
Public Member Functions inherited from fl::Fx2d
	Fx2d (const XYMap &xyMap)
u16	getHeight () const
u16	getWidth () const
XYMap &	getXYMap ()
const XYMap &	getXYMap () const
void	setXYMap (const XYMap &xyMap)
u16	xyMap (u16 x, u16 y) const
Public Member Functions inherited from fl::Fx
	Fx (u16 numLeds)
u16	getNumLeds () const
virtual bool	hasFixedFrameRate (float *fps) const
virtual void	pause (fl::u32 now)
virtual void	resume (fl::u32 now)

Private Member Functions
void	noExpand (fl::span< const CRGB > input, fl::span< CRGB > output, u16 width, u16 height)
	Direct copy without expansion (used when resolutions match)

Private Attributes
Fx2dPtr	mDelegate
	The wrapped effect that renders at low resolution.
fl::vector_psram< CRGB >	mSurface
	Low-resolution render buffer.

Additional Inherited Members
Public Types inherited from fl::Fx
using	DrawContext = ::fl::DrawContext
Protected Member Functions inherited from fl::Fx
virtual	~Fx () FL_NOEXCEPT
Protected Attributes inherited from fl::Fx2d
XYMap	mXyMap
Protected Attributes inherited from fl::Fx
u16	mNumLeds

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The documentation for this class was generated from the following files:

• fl/fx/2d/scale_up.h
• fl/fx/2d/scale_up.cpp.hpp