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-view-box/src/jvmDemo/kotlin/DemoProxyProgram01.kt

@@ -5,34 +5,41 @@ import org.openrndr.extra.viewbox.viewBox
 import org.openrndr.math.Vector2
 import kotlin.math.cos
 
+/**
+ * Demonstrates how to use a proxy program inside a [viewBox],
+ * how the main program can access its variables and methods,
+ * and execute its `extend` block by calling its `draw()` method.
+ */
 fun Program.program01() {
     var color: ColorRGBa by this.userProperties
     color = ColorRGBa.WHITE
 
-    var someFunction : ()->Unit by this.userProperties
+    var someFunction: () -> Unit by this.userProperties
     someFunction = {
         color = ColorRGBa(Math.random(), Math.random(), Math.random())
     }
 
     extend {
         drawer.fill = color
-        drawer.circle(Vector2(width/2.0, height/2.0), cos(seconds) * 50.0 + 50.0)
+        drawer.circle(Vector2(width / 2.0, height / 2.0), cos(seconds) * 50.0 + 50.0)
     }
 }
 
-fun main() {
-    application {
-        program {
-            val proxyBox = viewBox(drawer.bounds).apply { program01() }
-            var color: ColorRGBa by proxyBox.userProperties
-            var someFunction: () -> Unit by proxyBox.userProperties
-            color = ColorRGBa.PINK
-            extend {
-                if (Math.random() < 0.01) {
-                    someFunction()
-                }
-                proxyBox.draw()
+fun main() = application {
+    configure {
+        width = 720
+        height = 360
+    }
+    program {
+        val proxyBox = viewBox(drawer.bounds).apply { program01() }
+        var color: ColorRGBa by proxyBox.userProperties
+        val someFunction: () -> Unit by proxyBox.userProperties
+        color = ColorRGBa.PINK
+        extend {
+            if (Math.random() < 0.01) {
+                someFunction()
             }
+            proxyBox.draw()
         }
     }
-}
+}