config.yaml

# Configuration file - standing

string:
  # Number of segments in the string.
  num_components: 100

  # Temporal frequency.
  temporal_freq_hz: 0.6

  # Spatial frequency.
  spatial_freq_waves_per_unit: 1.5

  # Amplitude of waves (before model transformation).
  amplitude: 1.0

polygon:
  # Cross-section polygon of the string, as (p,q).
  component_pqs:
    - [0.0, 0.0]
    - [1.0, 0.0]
    - [1.0, 1.0]
    - [0.0, 1.0]
  # [(0.0, 0.0), (1.0, 0.0), (1.0, 0.4), (1.5, 0.5), (1.0, 0.6), (1.0, 1.0), (0.0, 1.0)];

  # P vector for cross-section.
  pv: [ 0.0, 0.2, 0.0 ]

  # Q vector for cross-section.
  qv: [ 0.0, 0.0, -2.5 ]

scene:
  background:
    # Background colour.
    colour: [ 0.1, 0.1, 0.3, 1.0]

  strings:
    # For each string:
      # String colour.
      # String position.
      # String scale (non-uniform).
      #  Initially x goes from -0.5 to 0.5, y from +/-AMPLITUDE, z small; plus PQ. This allows those
      #  to be adjusted.
      # Two waves that are summed to make up this string.
        # Factor to apply to spatial frequency of this wave.
        #   (setting this to 1.0 makes it move left, -1.0 moves right)
        # Offset to apply to spatial origin of this wave (positive moves wave right).
        #   (setting this to -0.5 corresponds to a reflection on left edge)
        # Amplitude factor to apply to this wave.
        #   (setting this to 1.0 is an open reflection, -1.0 is a closed reflection)

    - colour: [ 1.0, 0.0, 0.0, 1.0 ]
      pos: [ 0.0, 0.8, 0.0 ]
      scale: [ 4.0, 0.2, 1.0 ]
      waves:
        - spatial_freq_factor: 1.0
          spatial_offset: -0.5
          amplitude: 1.0
        - spatial_freq_factor: 0.0
          spatial_offset: 0.0
          amplitude: 0.0

    - colour: [ 0.0, 1.0, 0.0, 1.0 ]
      pos: [ 0.0, 0, 0.0 ]
      scale: [ 4.0, 0.2, 1.0 ]
      waves:
        - spatial_freq_factor: -1.0
          spatial_offset: -0.5
          amplitude: -1.0
        - spatial_freq_factor: 0.0
          spatial_offset: 0.0
          amplitude: 0.0

    - colour: [ 1.0, 1.0, 0.0, 1.0 ]
      pos: [0.0, -0.8, 0.0]
      scale: [4.0, 0.2, 1.0]
      waves:
        - spatial_freq_factor: 1.0
          spatial_offset: -0.5
          amplitude: 1.0
        - spatial_freq_factor: -1.0
          spatial_offset: -0.5
          amplitude: -1.0

  light:
    #  Light source location (actually this sets the direction only: from here toward origin).
    pos: [-10.0, 10.0, 20.0]


  camera:
    #  Location of the (perspective) camera.
    pos: [0.0, 0.15, 10.0]

    #  Field of view of camera.
    fov_deg: 15.0

    # Near distance (for depth calculations).
    near: 1.0

    # Far distance (for depth calculations).
    far: 20.0

console:
  # Reporting interval (for console reporting of FPS etc).
  report_interval_sec: 1.0