[orx-noise] Tidy up demos

Produce 720px wide images.
Use main() = application { for reduced indentation

orx-noise/src/jvmDemo/kotlin/hammersley/DemoHammersley4D01.kt

@@ -7,10 +7,7 @@ import org.openrndr.draw.isolated
 import org.openrndr.extra.camera.Orbital
 import org.openrndr.extra.meshgenerators.sphereMesh
 import org.openrndr.extra.noise.hammersley.hammersley4D
-import org.openrndr.extra.noise.rsequence.rSeq4D
 import org.openrndr.math.Vector4
-import kotlin.math.abs
-import kotlin.math.min
 
 /**
  * Demo that visualizes a 4D Hammersley point set in a 3D space, with colors determined by the 4th dimension.
@@ -25,28 +22,26 @@ import kotlin.math.min
  * of the scene. Rendering occurs within the draw loop, providing continuous visualization
  * of the point distribution.
  */
-fun main() {
-    application {
-        configure {
-            width = 720
-            height = 720
-        }
+fun main() = application {
+    configure {
+        width = 720
+        height = 720
+    }
 
-        program {
-            val sphere = sphereMesh(radius = 0.1)
-            extend(Orbital())
-            extend {
-                val points = (0 until 10000).map {
-                    (hammersley4D(it, 10000) - Vector4(0.5, 0.5, 0.5, 0.0)) * Vector4(10.0, 10.0, 10.0, 1.0)
-                }
-                for (point in points) {
-                    drawer.isolated {
-                        drawer.translate(point.xyz)
-                        drawer.fill = ColorRGBa.RED.toHSVa().shiftHue(point.w * 360.0).toRGBa()
-                        drawer.vertexBuffer(sphere, DrawPrimitive.TRIANGLES)
-                    }
+    program {
+        val sphere = sphereMesh(radius = 0.1)
+        extend(Orbital())
+        extend {
+            val points = (0 until 10000).map {
+                (hammersley4D(it, 10000) - Vector4(0.5, 0.5, 0.5, 0.0)) * Vector4(10.0, 10.0, 10.0, 1.0)
+            }
+            for (point in points) {
+                drawer.isolated {
+                    drawer.translate(point.xyz)
+                    drawer.fill = ColorRGBa.RED.toHSVa().shiftHue(point.w * 360.0).toRGBa()
+                    drawer.vertexBuffer(sphere, DrawPrimitive.TRIANGLES)
                 }
             }
         }
     }
-}
+}