In [16]:

    

import json

with open("steve-walking-rotation.json") as f: 
    j = json.load(f)
    out_j = []
    last_rotation = 10000
    for l in j: 
        
        if l["rotation"] != last_rotation: 
            out_j.append({
                    "time": float(l["timestamp"] - 1484941465098)/1000.0,
                    "rotation": -1*l["rotation"] + 90,
                })
            last_rotation = l["rotation"]

with open("steve-walking-rotation-out.json", "w") as f: 
    json.dump(out_j, f, indent=4)


    

In [1]:

    

# convert rotation json to new json format
# format found here: https://docs.google.com/document/d/1miKwDYnjdYtGWoPyTIBrjXlq3iuWFY5paQ5gzWWdKsk/edit

import json
import math
math.pi


    

    
Out[1]:





3.141592653589793

In [4]:

    

with open("rotations.json") as f: 
    j = json.load(f)
    new_rotations = []
    for i in range(len(j)): 
        if i != 0: 
            r1 = j[i - 1]
            r2 = j[i]
            
            r1_f = ( (r1["rotation"]+180) / 360.0) * 2.0 * math.pi
            r1_s = ( (r1["rotation"]) / 360.0) * 2.0 * math.pi
            
            new_rotation = {"orientations": [r1_f, r1_s], 
                           "start": r1["time"],
                           "end": r2["time"]}
            new_rotations.append(new_rotation)
            
    lr_f = ((j[-1]["rotation"]+180) / 360.0) * 2.0 * math.pi
    lr_s = ((j[-1]["rotation"]) / 360.0) * 2.0 * math.pi
    
    last_rotation = {"orientations": [lr_f, lr_s], 
                           "start": j[-1]["time"],
                           "end": 900000 }
    new_rotations.append(last_rotation)
    
#     new_subtitles = []
#     for rotation in new_rotations: 
#         new_subtitles.append({"start": rotation["start"], "end": rotation["end"], "text": ""})
        
#     out_json = {"videos": [{"fn": "../video/nocuts.mp4"}],
#                "subtitles": new_subtitles, 
#                "orientation": new_rotations}
#     with open("spec-files/nocuts.json", "w") as f: 
#         json.dump(out_json, f, indent=4)

    with open("spec-files/nocuts.json") as f_old: 
        j_old = json.load(f_old)
        j_old["orientation"] = new_rotations
        
    with open("spec-files/nocuts.json", "w") as f_new:
        json.dump(j_old, f, indent=4)


    

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