documenting chromatic prefab

docs/guide/prefabs/chromatic.md

@@ -5,37 +5,45 @@ outline: deep
 
 ## Overview
 
-The color scale prefab provides utility functions for generating color scales and returning them in a variety of formats (hex, color3, material, etc.). This prefab can be used standalone or in conjunction with [d3-scale](https://d3js.org/d3-scale). Additionally, these functions implement [chroma.js](https://gka.github.io/chroma.js/) to provide a variety of predefined schemes like [color brewer](https://colorbrewer2.org/#type=sequential&scheme=BuGn&n=3), or your own custom color maps. We are also working on a few schemes of our own to come out later. 
+The color scale prefab provides utility class and methods for generating color scales and returning them in a variety of formats (hex, color3, material, etc.). This prefab can be used standalone or in conjunction with [d3-scale](https://d3js.org/d3-scale). Additionally, these functions implement [chroma.js](https://gka.github.io/chroma.js/) to provide a variety of predefined schemes like [color brewer](https://colorbrewer2.org/#type=sequential&scheme=BuGn&n=3), or your own custom color maps. We are also working on a few schemes of our own to come out later. 
 
 ## Usage
 
-``` js
-//With createPlaneText() returns Mesh
-anu.createPlaneText(name: string, options: {}, scene: Scene);
 
-//With create() returns Mesh
-anu.create('planeText', name: string, scene: Scene, options: {}, data: {});
 
-//With bind() returns Selection
-anu.bind('planeText', scene: Scene, options: {}, data: [{}]);
+``` js
+//returns list of color from scheme name or list of color hex codes
+anu.ordinalChromatic(string | string[]).toColor3()
 
-//With bind() from a Selection returns a new Selection
-Selection.bind('planeText', options: {}, data: [{}]);
+//returns function that accepts int 0-1 and returns corresponding color
+anu.sequentialChromatic(string | string[]).toColor3() 
 ```
 
-## Options
 
-| Property       |      Value      |  Default |
-| ------------- | ------------- | ------------- |
-|   text   | (string) text to be rendered | 'undefined' |
-| size     |   (number) scaling factor to be baked into the vertices    |   1 |
-| opacity |   (number) opacity value between 0 and 1   |    1 |
-| color |   (Color3) color value of the mesh material   |    Color3.White() |
-| font |   (json) json spec of the MSDF text font    |    roboto-standard.json |
-| atlas |   (png) texture atlas of the MSDF text font   |    roboto-standard.png |
+
+## Color and Material Formats
+
+| Method       |    Return | 
+| ------------- | ------------- | 
+|   toColor3(steps)  | returns type of [color3](https://doc.babylonjs.com/typedoc/classes/BABYLON.Color3) length of steps or scheme by default | 
+|   toColor4(steps)  | returns type of [color3](https://doc.babylonjs.com/typedoc/classes/BABYLON.Color4) length of steps or scheme by default | 
+|   toStandardMaterial(steps)  | returns type of [standardMaterial](https://doc.babylonjs.com/typedoc/classes/BABYLON.StandardMaterial) length of steps or scheme by default | 
+|   toPBRMaterialRough(steps)  | returns type of [PBRMetallicRoughnessMaterial](https://doc.babylonjs.com/typedoc/classes/BABYLON.PBRMetallicRoughnessMaterial) length of steps or scheme by default | 
+|   toPBRMaterialGlossy(steps)  | returns type of [PBRSpecularGlossinessMaterial](https://doc.babylonjs.com/typedoc/classes/BABYLON.PBRSpecularGlossinessMaterial) length of steps or scheme by default | 
+
+<!-- 
+## Predefined Schemes
+
+### Ordinal Schemes
+
+
+
+### Sequential Schemes
 
 ## Examples
 
+### Ordinal Examples
+
 ``` js
 let options = {
     text: 'Hello World',
@@ -51,3 +59,5 @@ anu.createPlaneText('text2d', options, scene);
       height="400"
       src="/anu/examples.html?example=text">
   </iframe>
+
+  ### Sequential Examples -->