Add example for specularMaterial()

Author: JetStarBlues

src/webgl/material.js

@@ -712,36 +712,45 @@ p5.prototype.emissiveMaterial = function(v1, v2, v3, a) {
  * @param  {Number} [alpha] alpha value relative to current color range
  *                                 (default is 0-255)
  * @chainable
- */
-
-/**
- * @method specularMaterial
- * @param  {Number}        v1      red or hue value relative to
- *                                 the current color range
- * @param  {Number}        v2      green or saturation value
- *                                 relative to the current color range
- * @param  {Number}        v3      blue or brightness value
- *                                 relative to the current color range
- * @param  {Number}        [alpha]
- * @chainable
  *
  * @example
  * <div>
  * <code>
  * function setup() {
  *   createCanvas(100, 100, WEBGL);
+ *   noStroke();
  * }
+ *
  * function draw() {
  *   background(0);
- *   ambientLight(50);
- *   pointLight(250, 250, 250, 100, 100, 30);
+ *
+ *   ambientLight(60);
+ *
+ *   // add point light to showcase specular material
+ *   let locX = mouseX - width / 2;
+ *   let locY = mouseY - height / 2;
+ *   pointLight(255, 255, 255, locX, locY, 50);
+ *
  *   specularMaterial(250);
- *   sphere(40);
+ *   shininess(50);
+ *   torus(30, 10, 64, 64);
  * }
  * </code>
  * </div>
  * @alt
- * diffused radiating light source from top right of canvas
+ * torus with specular material
+ */
+
+/**
+ * @method specularMaterial
+ * @param  {Number}        v1      red or hue value relative to
+ *                                 the current color range
+ * @param  {Number}        v2      green or saturation value
+ *                                 relative to the current color range
+ * @param  {Number}        v3      blue or brightness value
+ *                                 relative to the current color range
+ * @param  {Number}        [alpha]
+ * @chainable
  */
 
 /**