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/primitives/DemoPulley01.kt

@@ -6,23 +6,21 @@ import org.openrndr.extra.shapes.primitives.Pulley
 import org.openrndr.math.Vector2
 import org.openrndr.shape.Circle
 
-fun main() {
-    application {
-        configure {
-            width = 720
-            height = 720
-        }
-        program {
-            extend {
-                drawer.clear(ColorRGBa.BLACK)
-                drawer.stroke = ColorRGBa.WHITE
-                drawer.fill = ColorRGBa.PINK
-                val pulley = Pulley(
-                    Circle(drawer.bounds.center - Vector2(100.0, 100.0), 150.0),
-                    Circle(drawer.bounds.center + Vector2(150.0, 150.0), 75.0)
-                )
-                drawer.contour(pulley.contour)
-            }
+fun main() = application {
+    configure {
+        width = 720
+        height = 720
+    }
+    program {
+        extend {
+            drawer.clear(ColorRGBa.BLACK)
+            drawer.stroke = ColorRGBa.WHITE
+            drawer.fill = ColorRGBa.PINK
+            val pulley = Pulley(
+                Circle(drawer.bounds.center - Vector2(100.0, 100.0), 150.0),
+                Circle(drawer.bounds.center + Vector2(150.0, 150.0), 75.0)
+            )
+            drawer.contour(pulley.contour)
         }
     }
-}
+}