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/bezierpatch/DemoBezierPatches01.kt

@@ -15,23 +15,21 @@ import org.openrndr.shape.ShapeContour
  * but one can manually create any other 4-segment closed contour
  * to use in bezier patches.
  */
-fun main() {
-    application {
-        configure {
-            width = 800
-            height = 800
-        }
-        program {
-            val c0 = Circle(width / 3.0, height / 2.0, 150.0).contour
-            val bp0 = bezierPatch(c0)
+fun main() = application {
+    configure {
+        width = 800
+        height = 800
+    }
+    program {
+        val c0 = Circle(width / 3.0, height / 2.0, 150.0).contour
+        val bp0 = bezierPatch(c0)
 
-            val c1 = Circle(2.0*width / 3.0, height / 2.0, 150.0).contour
-            val bp1 = bezierPatch(c1)
+        val c1 = Circle(2.0 * width / 3.0, height / 2.0, 150.0).contour
+        val bp1 = bezierPatch(c1)
 
 
-            extend {
-                drawer.bezierPatches(listOf(bp0, bp1))
-            }
+        extend {
+            drawer.bezierPatches(listOf(bp0, bp1))
         }
     }
-}
+}