Added sphere inversion, updated README.md

orx-mesh-generators/README.md

@@ -1,3 +1,37 @@
 # orx-mesh-generators
 
-Simple mesh generators for OPENRNDR
+Simple mesh generators for OPENRNDR
+
+##### usage
+
+```kotlin
+val sphere = sphereMesh(32, 32, 4.0)
+val unitSphere = sphereMesh()
+val cube = boxMesh()
+val box = boxMesh(2.0, 4.0, 2.0)
+```
+
+## API
+
+```kotlin
+fun sphereMesh(
+    sides: Int = 16,
+    segments: Int = 16,
+    radius: Double = 1.0,
+    invert: Boolean = false): VertexBuffer
+
+fun groundPlaneMesh(
+    width: Double = 1.0,
+    height: Double = 1.0,
+    widthSegments: Int = 1,
+    heightSegments: Int): VertexBuffer
+
+fun boxMesh(
+    width: Double = 1.0,
+    height: Double = 1.0,
+    depth: Double = 1.0,
+    widthSegments: Int = 1,
+    heightSegments: Int = 1,
+    depthSegments: Int = 1,
+    invert: Boolean = false): VertexBuffer
+```