epaper::LineCommand Struct Reference

Command for drawing a line between two points. More...

#include <commands.hpp>

Collaboration diagram for epaper::LineCommand:

Public Member Functions
constexpr	LineCommand (Point from_pt, Point to_pt, Color c=Color::Black, DotPixel w=DotPixel::Pixel1x1, LineStyle s=LineStyle::Solid) noexcept
	Construct a line command with specified parameters.

Public Attributes
Point	from
	Starting point.
Point	to
	Ending point.
Color	color
	Line color.
DotPixel	width
	Line width.
LineStyle	style
	Line style (solid/dotted)

Detailed Description

Command for drawing a line between two points.

Encapsulates all parameters needed to draw a line using Bresenham's algorithm. Constructed via LineBuilder for type-safe, expressive creation.

Member Semantics:

• from, to: Line endpoints in logical coordinate space (pre-orientation)
• color: Pixel color (mode-dependent rendering via ColorManager)
• width: Line thickness (DotPixel::Pixel1x1 = 1px, Pixel2x2 = 2px, etc.)
• style: Solid (all pixels) or Dotted (alternating pixels)

Implementation Notes:

• Width > 1px implemented by drawing parallel offset lines
• Dotted style: draws pixel at even step indices only (step % 2 == 0)
• Coordinates validated/clipped during rendering, not at construction

See also

LineBuilder, Graphics::draw_line()

Constructor & Destructor Documentation

LineCommand()

constexpr epaper::LineCommand::LineCommand ( Point  from_pt, Point  to_pt, Color  c = Color::Black, DotPixel  w = DotPixel::Pixel1x1, LineStyle  s = LineStyle::Solid  )

inlineconstexprnoexcept

Construct a line command with specified parameters.

Parameters

from_pt	Starting point
to_pt	Ending point
c	Line color (default: Black)
w	Line width (default: 1x1)
s	Line style (default: Solid)

Member Data Documentation

color

Color epaper::LineCommand::color

Line color.

Examples

/mnt/nas/libepaper/include/epaper/draw/commands.hpp.

from

Point epaper::LineCommand::from

Starting point.

Examples

/mnt/nas/libepaper/include/epaper/draw/commands.hpp.

style

LineStyle epaper::LineCommand::style

Line style (solid/dotted)

Examples

/mnt/nas/libepaper/include/epaper/draw/commands.hpp.

to

Point epaper::LineCommand::to

Ending point.

Examples

/mnt/nas/libepaper/include/epaper/draw/commands.hpp.

width

DotPixel epaper::LineCommand::width

Line width.

Examples

/mnt/nas/libepaper/include/epaper/draw/commands.hpp.

---

The documentation for this struct was generated from the following file:

• include/epaper/draw/commands.hpp