Merge pull request #219 from AnalyticalGraphicsInc/absolute-paths

Handle mtl and texture absolute paths

CHANGES.md

@@ -4,6 +4,7 @@ Change Log
 ### 3.?.? ????-??-??
 
 * Added back `inputUpAxis` and `outputUpAxis`. [#211](https://github.com/AnalyticalGraphicsInc/obj2gltf/pull/211)
+* Fixed handling of mtl and texture absolute paths. [#219](https://github.com/AnalyticalGraphicsInc/obj2gltf/pull/219)
 * Fixed specular image not being decoded when referenced by other textures. [#217](https://github.com/AnalyticalGraphicsInc/obj2gltf/pull/217)
 * Fixed parsing faces that reference non-existing attributes. [#218](https://github.com/AnalyticalGraphicsInc/obj2gltf/pull/218)
 

lib/loadMtl.js

@@ -89,7 +89,7 @@ function loadMtl(mtlPath, options) {
             texturePath = texturePath.split(/\s+/).pop();
         }
         texturePath = texturePath.replace(/\\/g, '/');
-        return path.normalize(path.join(mtlDirectory, texturePath));
+        return path.normalize(path.resolve(mtlDirectory, texturePath));
     }
 
     function parseLine(line) {

lib/loadObj.js

@@ -478,7 +478,7 @@ function finishLoading(nodes, mtlPaths, objPath, usesMaterials, options) {
 
 function normalizeMtlPath(mtlPath, objDirectory) {
     mtlPath = mtlPath.replace(/\\/g, '/');
-    return path.normalize(path.join(objDirectory, mtlPath));
+    return path.normalize(path.resolve(objDirectory, mtlPath));
 }
 
 function loadMtls(mtlPaths, objPath, options) {

specs/data/box-missing-mtllib/box-missing-mtllib.obj

@@ -1,6 +1,6 @@
 # Blender v2.78 (sub 0) OBJ File: ''
 # www.blender.org
-mtllib box.mtl
+mtllib /box.mtl
 o Cube
 v -1.000000 -1.000000 1.000000
 v -1.000000 1.000000 1.000000

specs/data/box-missing-texture/box-missing-texture.mtl

@@ -10,4 +10,4 @@ Ke 0.000000 0.000000 0.000000
 Ni 1.000000
 d 1.000000
 illum 2
-map_Kd cesium.png
+map_Kd /cesium.png

specs/lib/loadObjSpec.js

@@ -1,5 +1,6 @@
 'use strict';
 const Cesium = require('cesium');
+const path = require('path');
 
 const loadObj = require('../../lib/loadObj');
 const obj2gltf = require('../../lib/obj2gltf');
@@ -354,6 +355,7 @@ describe('loadObj', () => {
         const data = await loadObj(objMissingMtllibPath, options);
         expect(data.materials.length).toBe(0);
         expect(spy.calls.argsFor(0)[0].indexOf('ENOENT') >= 0).toBe(true);
+        expect(spy.calls.argsFor(0)[0].indexOf(path.resolve('/box.mtl')) >= 0).toBe(true);
         expect(spy.calls.argsFor(1)[0].indexOf('Attempting to read the material file from within the obj directory instead.') >= 0).toBe(true);
         expect(spy.calls.argsFor(2)[0].indexOf('ENOENT') >= 0).toBe(true);
         expect(spy.calls.argsFor(3)[0].indexOf('Could not read material file') >= 0).toBe(true);
@@ -431,6 +433,7 @@ describe('loadObj', () => {
         const baseColorTexture = data.materials[0].pbrMetallicRoughness.baseColorTexture;
         expect(baseColorTexture).toBeUndefined();
         expect(spy.calls.argsFor(0)[0].indexOf('ENOENT') >= 0).toBe(true);
+        expect(spy.calls.argsFor(0)[0].indexOf(path.resolve('/cesium.png')) >= 0).toBe(true);
         expect(spy.calls.argsFor(1)[0].indexOf('Attempting to read the texture file from within the obj directory instead.') >= 0).toBe(true);
         expect(spy.calls.argsFor(2)[0].indexOf('ENOENT') >= 0).toBe(true);
         expect(spy.calls.argsFor(3)[0].indexOf('Could not read texture file') >= 0).toBe(true);