[orx-shapes] Add WIP ContourAdjuster framework

orx-shapes/src/commonMain/kotlin/utilities/FromContours.kt

@@ -0,0 +1,28 @@
+package org.openrndr.extra.shapes.utilities
+
+import org.openrndr.shape.ShapeContour
+import org.openrndr.shape.contour
+
+/**
+ * Create a contour from a list of contours
+ */
+fun ShapeContour.Companion.fromContours(contours: List<ShapeContour>, closed: Boolean, connectEpsilon:Double=1E-6) : ShapeContour {
+    val contours = contours.filter { !it.empty }
+    if (contours.isEmpty()) {
+        return EMPTY
+    }
+    return contour {
+        moveTo(contours.first().position(0.0))
+        for (c in contours.windowed(2,1,true)) {
+            copy(c[0])
+            if (c.size == 2) {
+                if (c[0].position(1.0).distanceTo(c[1].position(0.0)) > connectEpsilon ) {
+                    lineTo(c[1].position(0.0))
+                }
+            }
+        }
+        if (closed) {
+            close()
+        }
+    }
+}