Merge remote-tracking branch 'origin/main' into main

README.md

@@ -55,7 +55,7 @@ The app was built using `Vue.js`, and communicates with Speckle through our `Gra
 
 The `server/` folder contains all code related to the app's backend.
 
-We're using a [FastAPI](https://link) server, written in Python, as well as our Python SDK to communicate with the [public Speckle server](https://speckle.xyz). The server contains two basic routes:
+We're using a [FastAPI](https://link) API framework with a Uvicorn server implementation, written in Python, as well as our Python SDK to communicate with the [public Speckle server](https://speckle.xyz). The server contains two basic routes:
 
 - **`diff-check/STREAM_ID/CURRENT_COMMIT_ID/PREV_COMMIT_ID`**
   
@@ -94,6 +94,12 @@ Some basic familiarity with python, POST requests, and API routing is recommende
   ```
   *If you're experiencing pip install issues, check that you are running these commands as an administrator!*
   
+ To deploy the server, open a command window in VSCode and navigate to your server folder. Run:
+ 
+ ```shell
+ uvicorn main:app --reload
+ ```
+  
 ## Frontend walkthrough requirements
 
 Some basic familiarity with JS and the Vue framework is recommended.
@@ -102,6 +108,13 @@ Some basic familiarity with JS and the Vue framework is recommended.
 - Install `vue CLI` - [Instructions here](https://cli.vuejs.org/guide/installation.html)
 - Install `vue dev tools` for Chrome [here](https://chrome.google.com/webstore/detail/vuejs-devtools/nhdogjmejiglipccpnnnanhbledajbpd)
 
+ To deploy the server, open a command window in VSCode and navigate to your frontend folder. Run:
+ 
+ ```shell
+ npm install
+ npm run serve
+ ```
+
 ## App testing requirements
 
 We're using [Rhino 7](https://www.rhino3d.com/download/), Grasshopper for Rhino, and Revit 2021 for our 3D model comparisons. You can 

server/mesh_diff.py

@@ -10,8 +10,7 @@ from specklepy.objects.geometry import Brep, Point, Mesh
 from specklepy.objects import Base
 from specklepy.objects.other import RenderMaterial
 
-COLORS = [-6426, -13108, -19790, -26215, -
-          32640, -39322, -45747, -52429, -59111, -65536]
+COLORS = [-6426, -13108, -19790, -26215, -32640, -39322, -45747, -52429, -59111, -65536]
 WHITE = -1
 
 
@@ -70,7 +69,8 @@ class SpeckleMeshDiff:
         """Checks if a specific diff commit already exists in the diff_branch"""
         branch_commits: Branch = self.client.branch.get(
             self.stream_id, self.diff_branch, 50)
-
+        if(branch_commits is None):
+            return None
         for commit in branch_commits.commits.items:
             if commit.message == f"{self.commit_current}-{self.commit_prev}":
                 return commit
@@ -234,7 +234,7 @@ class SpeckleMeshDiff:
     @staticmethod
     def receive_data(client: SpeckleClient, stream_id: str, commit_id: str) -> Base:
         """Get the data from a commit on the Speckle server"""
-        transport = ServerTransport(client, stream_id)
+        transport = ServerTransport(stream_id, client)
 
         commit = client.commit.get(stream_id, commit_id)
         res = operations.receive(commit.referencedObject, transport)