[orx-delegate-magic, orx-envelopes] Add orx-delegate-magic, orx-envelopes

orx-delegate-magic/src/jvmDemo/kotlin/DemoSpring01.kt

@@ -0,0 +1,33 @@
+import org.openrndr.application
+import org.openrndr.extra.delegatemagic.dynamics.springForcing
+import org.openrndr.extra.delegatemagic.smoothing.smoothing
+import kotlin.random.Random
+
+fun main() = application {
+    program {
+        val state = object {
+            var x = width / 2.0
+            var y = height / 2.0
+            var radius = 5.0
+        }
+
+        val sx by springForcing(state::x, k = 10.0)
+        val sy by springForcing(state::y)
+        val sradius by springForcing(state::radius)
+        extend {
+            if (Random.nextDouble() < 0.01) {
+                state.radius = Random.nextDouble(10.0, 200.0)
+            }
+
+            if (Random.nextDouble() < 0.01) {
+                state.x = Random.nextDouble(0.0, width.toDouble())
+            }
+
+            if (Random.nextDouble() < 0.01) {
+                state.y = Random.nextDouble(10.0, height.toDouble())
+            }
+
+            drawer.circle(sx, sy, sradius)
+        }
+    }
+}