diff --git a/orx-shapes/src/jvmDemo/kotlin/tunni/DemoTunniAdjuster01.kt b/orx-shapes/src/jvmDemo/kotlin/tunni/DemoTunniAdjuster01.kt
new file mode 100644
index 00000000..69f5ec20
--- /dev/null
+++ b/orx-shapes/src/jvmDemo/kotlin/tunni/DemoTunniAdjuster01.kt
@@ -0,0 +1,31 @@
+package tunni
+
+import contour
+import org.openrndr.application
+import org.openrndr.color.ColorRGBa
+import org.openrndr.extra.shapes.adjust.adjustContour
+import org.openrndr.extra.shapes.tunni.tunniLine
+import org.openrndr.shape.Circle
+import kotlin.math.cos
+
+fun main() {
+    application {
+        program {
+            extend {
+                val c = Circle(drawer.bounds.center, 200.0).contour
+                val c2 = adjustContour(c) {
+                    selectEdges { it -> true }
+                    for (e in edges) {
+                        val tl = e.tunniLine
+                        e.withTunniLine(tl.position(0.5) + tl.normal * cos(seconds)*200.0)
+                    }
+                }
+                for (s in c2.segments) {
+                    drawer.stroke = ColorRGBa.WHITE
+                    drawer.lineSegment(s.tunniLine)
+                }
+                drawer.contour(c2)
+            }
+        }
+    }
+}
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diff --git a/orx-shapes/src/jvmDemo/kotlin/tunni/DemoTunniPoint01.kt b/orx-shapes/src/jvmDemo/kotlin/tunni/DemoTunniPoint01.kt
new file mode 100644
index 00000000..048dbce8
--- /dev/null
+++ b/orx-shapes/src/jvmDemo/kotlin/tunni/DemoTunniPoint01.kt
@@ -0,0 +1,36 @@
+package tunni
+
+import org.openrndr.application
+import org.openrndr.color.ColorRGBa
+import org.openrndr.extra.shapes.tunni.tunniLine
+import org.openrndr.extra.shapes.tunni.tunniPoint
+import org.openrndr.extra.shapes.tunni.withTunniLine
+import org.openrndr.shape.Circle
+import kotlin.math.cos
+
+fun main() {
+    application {
+        program {
+            extend {
+                drawer.clear(ColorRGBa.WHITE)
+                drawer.fill = ColorRGBa.BLACK
+                val c = Circle(drawer.bounds.center, 200.0).contour
+
+                drawer.fill = null
+                for (s in c.segments) {
+                    val tp = s.tunniPoint
+                    println(tp)
+                    drawer.circle(tp, 10.0)
+                    val sc = s.cubic
+                    drawer.lineSegment(sc.control[0], sc.control[1])
+                    //drawer.segment(s.withTunniPoint(tp + (mouse.position - drawer.bounds.center)/2.0))
+                    drawer.segment(s.withTunniLine(s.tunniLine.position(0.5) + s.tunniLine.normal * cos(seconds) * 40.0))
+
+                }
+
+                drawer.contour(c)
+
+            }
+        }
+    }
+}
\ No newline at end of file