removed console logs

src/webgl/loading.js

@@ -103,6 +103,8 @@ import './p5.Geometry';
  * @param  {String} [fileType]
  * @return {p5.Geometry} the <a href="#/p5.Geometry">p5.Geometry</a> object
  */
+
+let materials = {}; //currently local
 p5.prototype.loadModel = function(path) {
   p5._validateParameters('loadModel', arguments);
   let normalize;
@@ -150,16 +152,37 @@ p5.prototype.loadModel = function(path) {
   } else if (fileType.match(/\.obj$/i)) {
     this.loadStrings(
       path,
-      strings => {
-        parseObj(model, strings);
-
-        if (normalize) {
-          model.normalize();
+      async lines => {
+        const mtlLine = lines.find(line => line.startsWith('mtllib '));
+        const mtlPath = mtlLine ? mtlLine.split(' ')[1] : undefined;
+        // console.log(mtlPath);
+        try{
+          let parsedMaterials=null;
+          if(mtlPath){
+            parsedMaterials=await parseMtl(mtlPath);  // Pass parsed materials to OBJ parsing
+          }
+          if (parsedMaterials){
+            await parseObj(model,lines, parsedMaterials);
+          }else {
+            await parseObj(model,lines); // No MTL file, parse OBJ directly
+          }
+        } catch (error) {
+          if (failureCallback) {
+            failureCallback(error);
+          } else {
+            p5._friendlyError('Error during parsing: ' + error.message);
+          }
         }
+        finally{
 
-        self._decrementPreload();
-        if (typeof successCallback === 'function') {
-          successCallback(model);
+          if (normalize) {
+            model.normalize();
+          }
+
+          self._decrementPreload();
+          if (typeof successCallback === 'function') {
+            successCallback(model);
+          }
         }
       },
       failureCallback
@@ -238,7 +261,7 @@ function parseMtl(mtlPath){ //accepts mtlPath to load file
  *
  * f 4 3 2 1
  */
-function parseObj(model, lines) {
+function parseObj(model, lines, materials= {}) {
   // OBJ allows a face to specify an index for a vertex (in the above example),
   // but it also allows you to specify a custom combination of vertex, UV
   // coordinate, and vertex normal. So, "3/4/3" would mean, "use vertex 3 with
@@ -254,6 +277,8 @@ function parseObj(model, lines) {
     vn: []
   };
   const indexedVerts = {};
+  let currentMaterial = null;
+
 
   for (let line = 0; line < lines.length; ++line) {
     // Each line is a separate object (vertex, face, vertex normal, etc)
@@ -262,7 +287,10 @@ function parseObj(model, lines) {
     const tokens = lines[line].trim().split(/\b\s+/);
 
     if (tokens.length > 0) {
-      if (tokens[0] === 'v' || tokens[0] === 'vn') {
+      if (tokens[0] === 'usemtl') {
+        // Switch to a new material
+        currentMaterial = tokens[1];
+      }else if (tokens[0] === 'v' || tokens[0] === 'vn') {
         // Check if this line describes a vertex or vertex normal.
         // It will have three numeric parameters.
         const vertex = new p5.Vector(
@@ -314,6 +342,16 @@ function parseObj(model, lines) {
               if (loadedVerts.vn[vertParts[2]]) {
                 model.vertexNormals.push(loadedVerts.vn[vertParts[2]].copy());
               }
+              if (currentMaterial && materials[currentMaterial]) {
+                const diffuseColor = materials[currentMaterial].diffuseColor;
+                model.vertexColors.push([
+                  diffuseColor[0] * 255,
+                  diffuseColor[1] * 255,
+                  diffuseColor[2] * 255
+                ]);
+              } else {
+                model.vertexColors.push([255, 255, 255]);
+              }
             }
 
             face.push(vertIndex);