Demos: ensure all use fun main() = application {

- Adjust some demo window sizes.
- Replace Random.double by Double.uniform
- Tweak some demos so screenshots look more interesting

orx-shapes/src/jvmDemo/kotlin/tunni/DemoTunniAdjuster01.kt

@@ -8,24 +8,22 @@ import org.openrndr.extra.shapes.tunni.withTunniLine
 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)
-                    }
+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)
             }
+            for (s in c2.segments) {
+                drawer.stroke = ColorRGBa.WHITE
+                drawer.lineSegment(s.tunniLine)
+            }
+            drawer.contour(c2)
         }
     }
-}
+}