Class: RubySpriter::Utils::SpritesheetSplitter

Inherits:
Object
  • Object
show all
Defined in:
lib/ruby_spriter/utils/spritesheet_splitter.rb

Overview

Splits a spritesheet into individual frame images

Instance Method Summary collapse

Instance Method Details

#split_into_frames(spritesheet_file, output_dir, columns, rows, frames) ⇒ Object

Split spritesheet into individual frames

Parameters:

  • spritesheet_file (String) —

    Path to spritesheet PNG

  • output_dir (String) —

    Directory to save individual frames

  • columns (Integer) —

    Number of columns in grid

  • rows (Integer) —

    Number of rows in grid

  • frames (Integer) —

    Total number of frames to extract



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# File 'lib/ruby_spriter/utils/spritesheet_splitter.rb', line 16

def split_into_frames(spritesheet_file, output_dir, columns, rows, frames)
  FileUtils.mkdir_p(output_dir)

  OutputFormatter.header("Extracting Frames")
  OutputFormatter.indent("Splitting spritesheet into #{frames} frames to disk...")
  OutputFormatter.indent("Output directory: #{output_dir}")

  # Get spritesheet dimensions

  dimensions = get_image_dimensions(spritesheet_file)
  tile_width = dimensions[:width] / columns
  tile_height = dimensions[:height] / rows

  # Extract each frame

  spritesheet_basename = File.basename(spritesheet_file, '.*')

  frames.times do |i|
    frame_number = i + 1
    row = i / columns
    col = i % columns

    x_offset = col * tile_width
    y_offset = row * tile_height

    frame_filename = "FR#{format('%03d', frame_number)}_#{spritesheet_basename}.png"
    frame_path = File.join(output_dir, frame_filename)

    extract_tile(spritesheet_file, frame_path, tile_width, tile_height, x_offset, y_offset)
  end

  OutputFormatter.indent("✅ Frames extracted successfully\n")
end