SweepLineEvent.js 1.6 KB

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  1. import Comparable from '../../../../../java/lang/Comparable'
  2. export default class SweepLineEvent {
  3. constructor() {
  4. SweepLineEvent.constructor_.apply(this, arguments)
  5. }
  6. static constructor_() {
  7. this._label = null
  8. this._xValue = null
  9. this._eventType = null
  10. this._insertEvent = null
  11. this._deleteEventIndex = null
  12. this._obj = null
  13. if (arguments.length === 2) {
  14. const x = arguments[0], insertEvent = arguments[1]
  15. this._eventType = SweepLineEvent.DELETE
  16. this._xValue = x
  17. this._insertEvent = insertEvent
  18. } else if (arguments.length === 3) {
  19. const label = arguments[0], x = arguments[1], obj = arguments[2]
  20. this._eventType = SweepLineEvent.INSERT
  21. this._label = label
  22. this._xValue = x
  23. this._obj = obj
  24. }
  25. }
  26. isDelete() {
  27. return this._eventType === SweepLineEvent.DELETE
  28. }
  29. setDeleteEventIndex(deleteEventIndex) {
  30. this._deleteEventIndex = deleteEventIndex
  31. }
  32. getObject() {
  33. return this._obj
  34. }
  35. compareTo(o) {
  36. const pe = o
  37. if (this._xValue < pe._xValue) return -1
  38. if (this._xValue > pe._xValue) return 1
  39. if (this._eventType < pe._eventType) return -1
  40. if (this._eventType > pe._eventType) return 1
  41. return 0
  42. }
  43. getInsertEvent() {
  44. return this._insertEvent
  45. }
  46. isInsert() {
  47. return this._eventType === SweepLineEvent.INSERT
  48. }
  49. isSameLabel(ev) {
  50. if (this._label === null) return false
  51. return this._label === ev._label
  52. }
  53. getDeleteEventIndex() {
  54. return this._deleteEventIndex
  55. }
  56. get interfaces_() {
  57. return [Comparable]
  58. }
  59. }
  60. SweepLineEvent.INSERT = 1
  61. SweepLineEvent.DELETE = 2