Helper class to draw scanlines. More...

#include <Scanline.hh>

Public Member Functions
	Scanline (const PixelOperations< Pixel > &pixelOps)

void	draw (std::span< const Pixel > src1, std::span< const Pixel > src2, std::span< Pixel > dst, unsigned factor)
	Draws a scanline. More...

Pixel	darken (Pixel p, unsigned factor) const
	Darken one pixel. More...

Pixel	darken (Pixel p1, Pixel p2, unsigned factor) const
	Darken and blend two pixels. More...

Detailed Description

template<std::unsigned_integral Pixel>
class openmsx::Scanline< Pixel >

Helper class to draw scanlines.

Definition at line 45 of file Scanline.hh.

Constructor & Destructor Documentation

template<std::unsigned_integral Pixel>

openmsx::Scanline< Pixel >::Scanline ( const PixelOperations< Pixel > & pixelOps )

explicit

Definition at line 183 of file Scanline.cc.

template<std::unsigned_integral Pixel>

Pixel openmsx::Scanline< Pixel >::darken	(	Pixel	p,
		unsigned	factor
	)		const

Darken one pixel.

Typically used to implement drawBlank().

Definition at line 211 of file Scanline.cc.

template<std::unsigned_integral Pixel>

Pixel openmsx::Scanline< Pixel >::darken	(	Pixel	p1,
		Pixel	p2,
		unsigned	factor
	)		const

Darken and blend two pixels.

Definition at line 217 of file Scanline.cc.

template<std::unsigned_integral Pixel>

void openmsx::Scanline< Pixel >::draw	(	std::span< const Pixel >	src1,
		std::span< const Pixel >	src2,
		std::span< Pixel >	dst,
		unsigned	factor
	)

Draws a scanline.

The scanline will be the average of the two input lines and darkened by a certain factor.

Parameters

src1	First input line.
src2	Second input line.
dst	Output line.
factor	Darkness factor, 0 means completely black, 255 means no darkening.

Definition at line 190 of file Scanline.cc.

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