hitlib::LedStrand::LayerSpan Struct Reference

Which pixels a layer owns. More...

#include <led_strand.hpp>

Public Attributes
uint8_t	start
	First pixel.
uint8_t	width
	Pixels.
uint8_t	stride
	0 draws one span; otherwise repeat it every N pixels.
bool	continuous
	With stride, sample the animation at the strand-wide pixel index rather than restarting it in each repeat.

Detailed Description

Which pixels a layer owns.

Member Data Documentation

start

uint8_t hitlib::LedStrand::LayerSpan::start

First pixel.

width

uint8_t hitlib::LedStrand::LayerSpan::width

Pixels.

0 means "to the end of the strand".

stride

uint8_t hitlib::LedStrand::LayerSpan::stride

0 draws one span; otherwise repeat it every N pixels.

A repeat is never wider than N, so a span wider than the stride (width 0 included) shows its first N pixels in each and no pixel is drawn twice.

continuous

bool hitlib::LedStrand::LayerSpan::continuous

With stride, sample the animation at the strand-wide pixel index rather than restarting it in each repeat.

This is the difference between one scroll cut into windows (what spliceMask()'s shared overlay does) and N synchronized copies of it. The motion runs across the whole strand as well, so a scroll, a bounce or a sparkle passes through every window rather than the first alone.