Class: Stagecraft::Loaders::GLTF

Inherits:
Object
  • Object
show all
Defined in:
lib/stagecraft/loaders/gltf_loader.rb

Defined Under Namespace

Classes: Result

Constant Summary collapse

ATTRIBUTE_NAMES = 
{
  POSITION: :position,
  NORMAL: :normal,
  TEXCOORD_0: :uv,
  TEXCOORD_1: :uv1,
  TANGENT: :tangent,
  COLOR_0: :color,
  JOINTS_0: :joints,
  WEIGHTS_0: :weights
}.freeze
TOPOLOGIES = 
{
  points: :point_list,
  lines: :line_list,
  line_strip: :line_strip,
  triangles: :triangle_list,
  triangle_strip: :triangle_strip
}.freeze

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(document) ⇒ GLTF

Returns a new instance of GLTF.



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# File 'lib/stagecraft/loaders/gltf_loader.rb', line 34

def initialize(document)
  @document = document
  @textures = {}
  @materials = {}
end

Class Method Details

.load(source) ⇒ Object 



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# File 'lib/stagecraft/loaders/gltf_loader.rb', line 26

def self.load(source)
  require "rgltf"
  require "texel"

  document = source.is_a?(Rgltf::Document) ? source : Rgltf.load(source)
  new(document).convert
end

Instance Method Details

#convert ⇒ Object 



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# File 'lib/stagecraft/loaders/gltf_loader.rb', line 40

def convert
  source_scenes = @document.scenes
  converted = source_scenes.map { |scene| convert_scene(scene) }
  default_index = @document.default_scene && source_scenes.index(@document.default_scene)
  default_index ||= 0
  default_scene = converted[default_index] || convert_scene(nil)
  mapping = @scene_mappings.fetch(default_scene.object_id)
  Result.new(
    scene: default_scene,
    scenes: converted.empty? ? [default_scene] : converted,
    animations: convert_animations(mapping),
    cameras: converted_cameras(mapping)
  )
end