Moved ParseObjMaterial to Geom namespace

Author: photonstorm

src/geom/mesh/ParseObjMaterial.js

@@ -0,0 +1,72 @@
+/**
+ * @author       Richard Davey <rich@photonstorm.com>
+ * @copyright    2020 Photon Storm Ltd.
+ * @license      {@link https://opensource.org/licenses/MIT|MIT License}
+ */
+
+var GetColor = require('../../display/color/GetColor');
+
+/**
+ * Takes a Wavefront Material file and extracts the diffuse reflectivity of the named
+ * materials, converts them to integer color values and returns them.
+ *
+ * This is used internally by the `addOBJ` and `addModel` methods, but is exposed for
+ * public consumption as well.
+ *
+ * Note this only works with diffuse values, specified in the `Kd r g b` format, where
+ * `g` and `b` are optional, but `r` is required. It does not support spectral rfl files,
+ * or any other material statement (such as `Ka` or `Ks`)
+ *
+ * @method Phaser.Geom.Mesh.ParseObjMaterial
+ * @since 3.50.0
+ *
+ * @param {string} mtl - The OBJ MTL file as a raw string, i.e. loaded via `this.load.text`.
+ *
+ * @return {object} The parsed material colors, where each property of the object matches the material name.
+ */
+var ParseObjMaterial = function (mtl)
+{
+    var output = {};
+
+    var lines = mtl.split('\n');
+
+    var currentMaterial = '';
+
+    for (var i = 0; i < lines.length; i++)
+    {
+        var line = lines[i].trim();
+
+        if (line.indexOf('#') === 0 || line === '')
+        {
+            continue;
+        }
+
+        var lineItems = line.replace(/\s\s+/g, ' ').trim().split(' ');
+
+        switch (lineItems[0].toLowerCase())
+        {
+            case 'newmtl':
+            {
+                currentMaterial = lineItems[1];
+                break;
+            }
+
+            //  The diffuse reflectivity of the current material
+            //  Support r, [g], [b] format, where g and b are optional
+            case 'kd':
+            {
+                var r = Math.floor(lineItems[1] * 255);
+                var g = (lineItems.length >= 2) ? Math.floor(lineItems[2] * 255) : r;
+                var b = (lineItems.length >= 3) ? Math.floor(lineItems[3] * 255) : r;
+
+                output[currentMaterial] = GetColor(r, g, b);
+
+                break;
+            }
+        }
+    }
+
+    return output;
+};
+
+module.exports = ParseObjMaterial;

src/geom/mesh/index.js

@@ -12,6 +12,7 @@ var Mesh = {
 
     Face: require('./Face'),
     ParseObj: require('./ParseObj'),
+    ParseObjMaterial: require('./ParseObjMaterial'),
     Vertex: require('./Vertex')
 
 };