LEDController/internal/patterns/experiment.go

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package patterns
import "math"
var sineoffset int = 0
var lastSineSpeed uint16 = 0
func Sinewave(w int, h int, bgColor RGBcolor, fgColor RGBcolor, speed uint16) [][]RGBcolor {
if speed != lastSineSpeed {
lastSineSpeed = speed
sineoffset = 0
}
sineoffset += int(speed/40)
background := FillPanelRGB(w,h,bgColor)
for x := 0; x < w; x++ {
y := int(math.Round((math.Sin(float64(x+sineoffset))+1) / 2 * float64(h-1)))
background[x][y] = fgColor
}
return background
}
var lastSinePos int = 0
func SineChase(w int, h int, bgColor RGBcolor, fgColor RGBcolor, speed uint16) [][]RGBcolor {
if speed != lastSineSpeed {
lastSineSpeed = speed
lastSinePos = 0
}
background := FillPanelRGB(w,h,bgColor)
y := int(math.Round((math.Sin(float64(lastSinePos))+1) / 2 * float64(h-1)))
background[lastSinePos][y] = fgColor
lastSinePos += 1
if lastSinePos >= w {
lastSinePos = 0
}
return background
}
func ZigZag(w int, h int) [][]RGBcolor {
var bgColor = [3]byte{0,0,0}
var fgColor = [3]byte{255,0,0}
//var a = [5]int{2, 4, 6, 8, 10}
background := FillPanelRGB(w,h,bgColor)
for x := 0; x < w; x++ {
y := x % (h-1)
background[x][y] = fgColor
}
return background
}