[orx-shapes] Add selection stacks and selection parameters

orx-shapes/src/jvmDemo/kotlin/DemoAdjustContour06.kt

@@ -0,0 +1,42 @@
+import org.openrndr.application
+import org.openrndr.color.ColorRGBa
+import org.openrndr.extra.shapes.adjust.adjustContour
+import org.openrndr.shape.Circle
+import kotlin.math.cos
+
+fun main() {
+    application {
+        configure {
+            width = 800
+            height = 800
+        }
+        program {
+            extend {
+                var contour =
+                    Circle(drawer.bounds.center, 300.0).contour
+
+                contour = adjustContour(contour) {
+                    parameters.clearSelectedVertices = true
+                    parameters.selectInsertedVertices = true
+
+
+
+                    for (i in 0 until 4) {
+                        val splitT = cos(seconds + i * Math.PI*0.5)*0.2+0.5
+                        selectEdges { it -> true }
+                        for (e in edges) {
+                            e.splitAt(splitT)
+                        }
+                        // as a resut of the clearSelectedVertices and selectInsertedVertices settings
+                        // the vertex selection is set to the newly inserted vertices
+                        for ((index, v) in vertices.withIndex()) {
+                            v.scale(cos(seconds + i + index) * 0.5 * (1.0 / (1.0 + i)) + 1.0, drawer.bounds.center)
+                        }
+                    }
+                }
+                drawer.stroke = ColorRGBa.RED
+                drawer.contour(contour)
+            }
+        }
+    }
+}