當前位置: 首頁>>代碼示例>>TypeScript>>正文


TypeScript pointer.touchBBox方法代碼示例

本文整理匯總了TypeScript中@interactjs/utils.pointer.touchBBox方法的典型用法代碼示例。如果您正苦於以下問題:TypeScript pointer.touchBBox方法的具體用法?TypeScript pointer.touchBBox怎麽用?TypeScript pointer.touchBBox使用的例子?那麽, 這裏精選的方法代碼示例或許可以為您提供幫助。您也可以進一步了解該方法所在@interactjs/utils.pointer的用法示例。


在下文中一共展示了pointer.touchBBox方法的1個代碼示例,這些例子默認根據受歡迎程度排序。您可以為喜歡或者感覺有用的代碼點讚,您的評價將有助於係統推薦出更棒的TypeScript代碼示例。

示例1: updateGestureProps

function updateGestureProps ({ interaction, iEvent, event, phase }: GestureSignalArg) {
  if (interaction.prepared.name !== 'gesture') { return }

  const pointers = interaction.pointers.map((p) => p.pointer)
  const starting = phase === 'start'
  const ending = phase === 'end'
  const deltaSource = interaction.interactable.options.deltaSource

  iEvent.touches = [pointers[0], pointers[1]]

  if (starting) {
    iEvent.distance = utils.pointer.touchDistance(pointers, deltaSource)
    iEvent.box      = utils.pointer.touchBBox(pointers)
    iEvent.scale    = 1
    iEvent.ds       = 0
    iEvent.angle    = utils.pointer.touchAngle(pointers, deltaSource)
    iEvent.da       = 0

    interaction.gesture.startDistance = iEvent.distance
    interaction.gesture.startAngle = iEvent.angle
  }
  else if (ending || event instanceof InteractEvent) {
    const prevEvent = interaction.prevEvent as GestureEvent

    iEvent.distance = prevEvent.distance
    iEvent.box      = prevEvent.box
    iEvent.scale    = prevEvent.scale
    iEvent.ds       = 0
    iEvent.angle    = prevEvent.angle
    iEvent.da       = 0
  }
  else {
    iEvent.distance = utils.pointer.touchDistance(pointers, deltaSource)
    iEvent.box      = utils.pointer.touchBBox(pointers)
    iEvent.scale    = iEvent.distance / interaction.gesture.startDistance
    iEvent.angle    = utils.pointer.touchAngle(pointers, deltaSource)

    iEvent.ds = iEvent.scale - interaction.gesture.scale
    iEvent.da = iEvent.angle - interaction.gesture.angle
  }

  interaction.gesture.distance = iEvent.distance
  interaction.gesture.angle = iEvent.angle

  if (utils.is.number(iEvent.scale) &&
      iEvent.scale !== Infinity &&
      !isNaN(iEvent.scale)) {
    interaction.gesture.scale = iEvent.scale
  }
}
開發者ID:taye,項目名稱:interact.js,代碼行數:50,代碼來源:gesture.ts


注:本文中的@interactjs/utils.pointer.touchBBox方法示例由純淨天空整理自Github/MSDocs等開源代碼及文檔管理平台,相關代碼片段篩選自各路編程大神貢獻的開源項目,源碼版權歸原作者所有,傳播和使用請參考對應項目的License;未經允許,請勿轉載。