Describe cropping transformation parameters.

Values

• crop_top_left_corner: tuple representing coords (in [0, 1] range) of top left corner of the visible part of video
• crop_size: tuple representing width and height (in [0, 1] range) of the visible part of video
• cropped_video_position: optional atom, describe whether cropped video part should remain in cropped part or should be in position of video before transformation. For more reference see Examples section below.

Examples

Struct describing transformation, which displays only bottom right quarter of input video, with cropped part remaining in its position:

iex> alias Membrane.VideoCompositor.Transformations.Cropping
Membrane.VideoCompositor.Transformations.Cropping
iex> %Cropping{
  crop_top_left_corner: {0.5, 0.5},
  crop_size: {0.5, 0.5},
  cropped_video_position: :crop_part_position # can be omitted, this is default value
}
%Membrane.VideoCompositor.Transformations.Cropping{
  crop_top_left_corner: {0.5, 0.5},
  crop_size: {0.5, 0.5},
  cropped_video_position: :crop_part_position
}

Struct describing transformation, which displays only right part of input video in left part of input video:

iex> alias Membrane.VideoCompositor.Transformations.Cropping
  Membrane.VideoCompositor.Transformations.Cropping
  iex> %Cropping{
    crop_top_left_corner: {0.5, 0.0},
    crop_size: {0.5, 1.0},
    cropped_video_position: :input_position
  }
  %Membrane.VideoCompositor.Transformations.Cropping{
    crop_top_left_corner: {0.5, 0.0},
    crop_size: {0.5, 1.0},
    cropped_video_position: :input_position
  }