sellmair

private class PatternDetectorConnector(
	private val first: PatternDetector, 
	private val second: PatternDetector): PatternDetector {
	
	override fun findPatterns(data: List<Weight>): List<Pattern> {
	val firstPatterns = first.findPatterns(data)
	val secondPatterns = seconnd.findPatterns(data)
	return firstPatterns + secondPatterns
}

sellmair

```
 interface PatternDetector {
	fun findPatterns(data: List<Weight>): List<Pattern>
}
```

sellmair

interface Stage : ReadMeasureSettings, ReadTimestamp {
    interface Pending : Stage, ReadRawImage
    interface ShapeDetection : Stage, ReadPreparedImage
    interface FeatureDetection : Stage, ReadPreparedImage, ReadShapes
    interface PersonDetection : Stage, ReadPreparedImage, ReadFeatures
    interface Measurement : Stage, ReadPeople
}

sellmair

val Request<out ReadRawImage>.image get() = Request.imageOf(this)
val Request<out ReadTimestamp>.timestamp get() = Request.timestampOf(this)
val Request<out ReadMeasureSettings>.measureSettings get() = Request.measureSettingsOf(this)
val Request<out ReadPreparedImage>.image get() = Request.preparedImageOf(this)
val Request<out ReadPreparedImage>.scaledImage get() = Request.scaledPreparedImageOf(this)
val Request<out ReadShapes>.shapes get() = Request.shapesOf(this)
val Request<out ReadFeatures>.features get() = Request.featuresOf(this)
val Request<out ReadPeople>.people get() = Request.peopleOf(this)

sellmair

class Request<T>(
    private val image: Image?,
    private val timestamp: Timestamp?,
    private val measureSettings: MeasureSettings?,
    private val preparedImage: Mat?,
    private val scaledPreparedImage: Mat?,
    private val shapes: List<Shape>?,
    private val features: List<Feature>?,
    private val people: List<Person>?) {

sellmair

interface ReadRawImage
interface ReadTimestamp
interface ReadMeasureSettings
interface ReadPreparedImage
interface ReadShapes
interface ReadFeatures
interface ReadPeople

sellmair

/*
* This is our Request type. It is basically a holder for all 
* information we could wish from it. But we cannot read anything from it directly. 
* It has a type param T.
* T is not used anywhere in Request directly, hence why it is called Phantom Type.
*/
class Request<T> (
  private val image: Image?, 
  private val timestamp: Timestamp?, 
  private val measureSettings: MeasureSettings?,

sellmair

/**
* This is our base request. 
* It contains the image taken by the camera
* The timestamp when it was taken (because it obviously matters)
* And some additional settings for the measure algorithm
*/
open class Request(
  val image: Image, 
  val timestamp: Timestamp, 
  val settings: MeasureSettings)