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ビデオコントロール

説明​

このコンポーネントにより、エンティティはマテリアルに適用されたテクスチャのビデオ再生を制御できる。 これは、Studioコンフィギュレーターでビデオが設定されると自動的に追加されます。 プログラムでビデオを追加する場合、再生コントロールを有効にするには、このコンポーネントを手動で追加する必要がある。

プロパティ​

プロパティタイプデフォルト説明
volumenumber1How loud the video will be played. A value between 0 and 1.
loopbooleanfalseWhether the video restarts after it finishes
pausedbooleanfalseWhether the video is currently paused
speednumber1The playback speed of the video. Also affects the pitch of the audio.
positionalbooleanfalseWhether the video's audio is played positionally
refDistancenumber1Only applied if positional is true. The distance at which the audio begins to diminish in volume. Must be a non-negative value.
distanceModelstring'inverse'Only applied if positional is true. The algorithm used to reduce volume as the distance increases between this video source and the listener. Allowed values: 'linear', 'inverse', 'exponential'
rolloffFactornumber1Only applied if positional is true. How quickly volume is reduced as distance increases. The acceptable range varies depending on the distanceModel: linear: 0–1, inverse: 0–∞, exponential: 0–∞
maxDistancenumber10000Only applied if positional is true and distanceModel is 'linear'. Beyond this distance, the volume will not reduce further. Must be a positive value.

機能​

Get​

Returns a read-only reference.

Example

ecs.VideoControls.get(world, component.eid)

Set​

Ensures the component exists on the entity, then assigns the (optional) data to the component.

Example

ecs.VideoControls.set(world, component.eid, {
  url: './assets/video.mp4',
  volume: 1,
  loop: false,
  paused: false,
  speed: 1,
  positional: false,
  refDistance: 1,
  distanceModel: 'inverse',
  rolloffFactor: 1,
  maxDistance: 10000
})

Mutate​

Perform an update to the component within a callback function. Return true to indicate no changes made.

Example

ecs.VideoControls.mutate(world, component.eid, (cursor) => {
  cursor.volume = 0.5;
  cursor.loop = true;
  return false;
})

Remove​

Removes the component from the entity.

Example

ecs.VideoControls.remove(world, component.eid)

Has​

Returns true if the component is present on the entity.

Example

ecs.VideoControls.has(world, component.eid)

Reset​

Adds, or resets the component to its default state.

Example

ecs.VideoControls.reset(world, component.eid)

Advanced Functions​

Cursor​

Returns a mutable reference. Cursors are reused so only one cursor for each component can exist at a time.

Example
ecs.VideoControls.cursor(world, component.eid)

Acquire​

Same behavior as cursor, but commit must be called after the cursor is done being used.

Example
ecs.VideoControls.acquire(world, component.eid)

Commit​

Called after acquire. An optional third argument determines whether the cursor was mutated or not.

Example
ecs.VideoControls.commit(world, component.eid)
ecs.VideoControls.commit(world, component.eid, false)

Dirty​

Mark the entity as having been mutated. Only needed in a specific case where systems are mutating data.

Example
ecs.VideoControls.dirty(world, component.eid)