{ {% for body in bodies %}
    {% if not forloop.first %}, {% endif %}
    "{{body.name}}": [
      {% for fixture in body.fixtures %}{% if not forloop.first %} ,{% endif %}
      {
        "isSensor": {{fixture.isSensor}},
        "filter": {
          "categoryBits": {{fixture.filter_categoryBits}},
          "maskBits": {{fixture.filter_maskBits}}
        },

        {% if fixture.isCircle %}
          "circle": {
            "radius": {{fixture.radius|floatformat:3}},
            "position": [
              {{fixture.center.x|floatformat:3}},
              {{fixture.center.y|floatformat:3}}
            ]
          }
        {% else %}
          "polygons":[ 
            {% for polygon in fixture.polygons %}{% if not forloop.first %} ,{% endif %}
            [ {% for point in polygon %} {% if not forloop.first %}, {% endif %} {{point.x}}, {{point.y}} {% endfor %} ]
            {% endfor %}
          ]
        {% endif %}
      }
      {% endfor %}
    ]
    {% endfor %}
  }