[orx-shapes] Add circle inversion primitives and demo examples

orx-shapes/src/jvmDemo/kotlin/primitives/DemoCircleInversion01.kt

@@ -0,0 +1,18 @@
+package primitives
+
+import org.openrndr.application
+import org.openrndr.extra.shapes.primitives.invert
+import org.openrndr.shape.Circle
+
+fun main() = application {
+    configure {
+        width = 720
+        height = 720
+    }
+    program {
+        extend {
+            val c = Circle(drawer.bounds.center, 100.0)
+            drawer.circle(c.invert(mouse.position),10.0)
+        }
+    }
+}

orx-shapes/src/jvmDemo/kotlin/primitives/DemoCircleInversion02.kt

@@ -0,0 +1,48 @@
+package primitives
+
+import org.openrndr.application
+import org.openrndr.color.ColorRGBa
+import org.openrndr.extra.shapes.primitives.invert
+import org.openrndr.extra.shapes.primitives.invertConformal
+import org.openrndr.math.Polar
+import org.openrndr.shape.Circle
+
+fun main() = application {
+    configure {
+        width = 720
+        height = 720
+    }
+    program {
+        extend {
+            val p = Polar(seconds * 36.0, 100.0).cartesian + drawer.bounds.center
+            val mc = Circle(p, 100.0)
+
+            // check if p is inside any of the circles
+            for (j in 0 until 10) {
+                for (i in 0 until 10) {
+                    val c = Circle(i * width / 10.0 + width / 20.0, j * height / 10.0 + height / 20.0, 36.0)
+                    if (p in c) {
+                        drawer.clear(ColorRGBa.WHITE)
+                        drawer.fill = ColorRGBa.BLACK
+                        drawer.stroke = null
+                        drawer.circle(mc.invertConformal(c))
+                        break
+                    }
+                }
+
+            }
+
+            drawer.stroke = null
+            drawer.fill = ColorRGBa.WHITE
+
+            for (j in 0 until 10) {
+                for (i in 0 until 10) {
+                    val c = Circle(i * width / 10.0 + width / 20.0, j * height / 10.0 + height / 20.0, 36.0)
+                    if (p !in c) {
+                        drawer.circle(mc.invertConformal(c))
+                    }
+                }
+            }
+        }
+    }
+}