[orx-chataigne] Add Chataigne support (#130)

orx-chataigne/src/demo/kotlin/ChataigneOSCDemo.kt

@@ -0,0 +1,29 @@
+import org.openrndr.application
+import org.openrndr.color.ColorRGBa
+import org.openrndr.extra.osc.OSC
+
+fun main() = application {
+
+    configure {
+        width = 500
+        height = 500
+    }
+
+   /* Find the Chataigne example project in /resources */
+    class SceneVariables : ChataigneOSC(OSC(portIn = 9005, portOut = 12001)) {
+        val myRadius: Double by DoubleChannel("/myRadius")
+        val myOpacity: Double by DoubleChannel("/myOpacity")
+        val myColor: ColorRGBa by ColorChannel("/myColor")
+    }
+
+    program {
+        val animation = SceneVariables()
+
+        extend {
+            animation.update(seconds)
+
+            drawer.fill = animation.myColor.opacify(animation.myOpacity)
+            drawer.circle(width/2.0, height/2.0, animation.myRadius * 250)
+        }
+    }
+}

orx-chataigne/src/main/kotlin/ChataigneOSC.kt

@@ -0,0 +1,53 @@
+import org.openrndr.color.ColorRGBa
+import org.openrndr.extra.osc.OSC
+import java.awt.Color
+import kotlin.reflect.KProperty
+
+open class ChataigneOSC(
+        val osc: OSC
+) {
+    inner class DoubleChannel(key:String) {
+        private var currentDouble = 0.0
+
+        init {
+            osc.listen(key) {
+                currentDouble = (it[0] as Float).toDouble()
+            }
+        }
+
+        operator fun getValue(thisRef: Any?, property: KProperty<*>):Double {
+            return currentDouble
+        }
+
+        operator fun setValue(thisRef: Any?, property: KProperty<*>, value: Double) {
+            print("$value")
+        }
+    }
+
+    inner class ColorChannel(key:String) {
+        private var currentColor = ColorRGBa.BLACK
+
+        init {
+            println(key)
+            osc.listen(key) {
+                val c = it[0] as Color
+                currentColor = ColorRGBa(c.red/255.0, c.green/255.0, c.blue/255.0, c.alpha/255.0)
+            }
+        }
+
+        operator fun getValue(thisRef: Any?, property: KProperty<*>):ColorRGBa {
+            return currentColor
+        }
+        operator fun setValue(thisRef: Any?, property: KProperty<*>, value: Double) {
+            print("$value")
+        }
+    }
+
+    fun update(seconds: Double) {
+        osc.send("/setTime", seconds.toFloat())
+    }
+
+    init {
+        println("setup Chataigne with OSC ${osc.address} in:${osc.portIn} out:${osc.portOut}")
+    }
+}