func drawGraph(ctx *nanovgo.Context, x, y, w, h, t float32) {
var sx, sy [6]float32
dx := w / 5.0
samples := []float32{
(1 + sinF(t*1.2345+cosF(t*0.33457)*0.44)) * 0.5,
(1 + sinF(t*0.68363+cosF(t*1.3)*1.55)) * 0.5,
(1 + sinF(t*1.1642+cosF(t*0.33457)*1.24)) * 0.5,
(1 + sinF(t*0.56345+cosF(t*1.63)*0.14)) * 0.5,
(1 + sinF(t*1.6245+cosF(t*0.254)*0.3)) * 0.5,
(1 + sinF(t*0.345+cosF(t*0.03)*0.6)) * 0.5,
}
for i := 0; i < 6; i++ {
sx[i] = x + float32(i)*dx
sy[i] = y + h*samples[i]*0.8
}
// Graph background
bg := nanovgo.LinearGradient(x, y, x, y+h, nanovgo.RGBA(0, 160, 192, 0), nanovgo.RGBA(0, 160, 192, 64))
ctx.BeginPath()
ctx.MoveTo(sx[0], sy[0])
for i := 1; i < 6; i++ {
ctx.BezierTo(sx[i-1]+dx*0.5, sy[i-1], sx[i]-dx*0.5, sy[i], sx[i], sy[i])
}
ctx.LineTo(x+w, y+h)
ctx.LineTo(x, y+h)
ctx.SetFillPaint(bg)
ctx.Fill()
// Graph line
ctx.BeginPath()
ctx.MoveTo(sx[0], sy[0]+2)
for i := 1; i < 6; i++ {
ctx.BezierTo(sx[i-1]+dx*0.5, sy[i-1]+2, sx[i]-dx*0.5, sy[i]+2, sx[i], sy[i]+2)
}
ctx.SetStrokeColor(nanovgo.RGBA(0, 0, 0, 32))
ctx.SetStrokeWidth(3.0)
ctx.Stroke()
ctx.BeginPath()
ctx.MoveTo(sx[0], sy[0])
for i := 1; i < 6; i++ {
ctx.BezierTo(sx[i-1]+dx*0.5, sy[i-1], sx[i]-dx*0.5, sy[i], sx[i], sy[i])
}
ctx.SetStrokeColor(nanovgo.RGBA(0, 160, 192, 255))
ctx.SetStrokeWidth(3.0)
ctx.Stroke()
// Graph sample pos
for i := 0; i < 6; i++ {
bg = nanovgo.RadialGradient(sx[i], sy[i]+2, 3.0, 8.0, nanovgo.RGBA(0, 0, 0, 32), nanovgo.RGBA(0, 0, 0, 0))
ctx.BeginPath()
ctx.Rect(sx[i]-10, sy[i]-10+2, 20, 20)
ctx.SetFillPaint(bg)
ctx.Fill()
}
ctx.BeginPath()
for i := 0; i < 6; i++ {
ctx.Circle(sx[i], sy[i], 4.0)
}
ctx.SetFillColor(nanovgo.RGBA(0, 160, 192, 255))
ctx.Fill()
ctx.BeginPath()
for i := 0; i < 6; i++ {
ctx.Circle(sx[i], sy[i], 2.0)
}
ctx.SetFillColor(nanovgo.RGBA(220, 220, 220, 255))
ctx.Fill()
ctx.SetStrokeWidth(1.0)
}