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-composition/src/jvmDemo/kotlin/DemoCompositionDrawer02.kt

@@ -4,23 +4,21 @@ import org.openrndr.extra.composition.ClipMode
 import org.openrndr.extra.composition.composition
 import org.openrndr.extra.composition.drawComposition
 
-fun main() {
-    application {
-        program {
-            val cd = drawComposition {
-                fill = null
-                circle(width / 2.0, height / 2.0, 100.0)
+fun main() = application {
+    program {
+        val cd = drawComposition {
+            fill = null
+            circle(width / 2.0, height / 2.0, 100.0)
 
-                fill = ColorRGBa.BLACK
-                clipMode = ClipMode.REVERSE_DIFFERENCE
-                circle(width / 2.0 + 50.0, height / 2.0, 100.0)
-            }
+            fill = ColorRGBa.BLACK
+            clipMode = ClipMode.REVERSE_DIFFERENCE
+            circle(width / 2.0 + 50.0, height / 2.0, 100.0)
+        }
 
 
-            extend {
-                drawer.clear(ColorRGBa.PINK)
-                drawer.composition(cd)
-            }
+        extend {
+            drawer.clear(ColorRGBa.PINK)
+            drawer.composition(cd)
         }
     }
-}
+}