func main() {
// Connecting
log.Println("Trying to connect to localhost:1972 ...")
conn, err := gobci.Connect("localhost:1972")
if err != nil {
log.Fatal(err)
}
defer conn.Close()
// Getting header information
log.Println("Requesting header data ...")
header, err := conn.GetHeader()
if err != nil {
log.Fatal(err)
}
for {
// Getting samples
log.Println("Requesting sample data ...")
var amountOfSamples uint32 = 100
if header.NSamples < amountOfSamples {
log.Fatal("Not enough samples avialable")
}
samples, err := conn.GetData(0, 0)
if err != nil {
log.Fatal(err)
}
// Visualizing the channels
channels := make([]channelXYer, header.NChannels)
for _, sample := range samples {
for i := uint32(0); i < header.NChannels; i++ {
channels[i].Values = append(channels[i].Values, sample[i])
}
}
log.Println("Plotting samples ...")
plt, err := plot.New()
plotutil.AddLinePoints(plt,
"CH0", plotter.XYer(channels[0]),
"CH1", plotter.XYer(channels[1]),
"CH2", plotter.XYer(channels[2]))
log.Println("Saving plot to output.jpg ...")
plt.Save(10*vg.Inch, 5*vg.Inch, "output.jpg")
}
log.Println("Done")
}
func (c *Calibrate) Update(entity *ecs.Entity, dt float32) {
if c.frameIndex != 0 {
return
}
var (
cal *CalibrateComponent
ok bool
)
if cal, ok = entity.ComponentFast(cal).(*CalibrateComponent); !ok {
return
}
// Render the image again
plt, err := plot.New()
if err != nil {
log.Fatal(err)
}
plotutil.AddLinePoints(plt,
"CH"+strconv.Itoa(int(cal.ChannelIndex)), plotter.XYer(c.channels[cal.ChannelIndex]))
img := image.NewRGBA(image.Rect(0, 0, 3*dpi, 3*dpi))
canv := vgimg.NewWith(vgimg.UseImage(img))
plt.Draw(draw.New(canv))
bgTexture := engi.NewImageRGBA(img)
// Give it to engi
erender := &engi.RenderComponent{
Display: engi.NewRegion(engi.NewTexture(bgTexture), 0, 0, 3*dpi, 3*dpi),
Scale: engi.Point{1, 1},
Transparency: 1,
Color: color.RGBA{255, 255, 255, 255},
}
erender.SetPriority(engi.HUDGround)
entity.AddComponent(erender)
}
