Added orx-no-clear

orx-no-clear/README.md

@@ -0,0 +1,21 @@
+# orx-no-clear
+
+A simple OPENRNDR Extension that provides the classical drawing-without-clearing-the-screen functionality that
+OPENRNDR does not support natively.
+
+#### Usage
+
+```
+class NoClearProgram: Program() {
+
+    override fun setup() {
+        backgroundColor = ColorRGBa.PINK
+        extend(NoClear())
+    }
+
+    override fun draw() {
+        drawer.circle(Math.cos(seconds) * width / 2.0 + width / 2.0, Math.sin(seconds * 0.24) * height / 2.0 + height / 2.0, 20.0)
+    }
+}
+
+```