GNSS3 Main Correction Implementation & Deployment

Object - GNSS3 Main Correction Implementation & Deployment

function correction(angle1, angle2, point1, point2){
  /**
   * @summary - Real Correction Function
   */

  // Compute LngLat
  let tan1 = Math.tan(angle1)
  let tan2 = Math.tan(angle2)
  let meetXY = meetPoint(tan1, tan2, point1, point2)
  if (meetXY === ERROR) return
  let newlnglat = ol.proj.transform(meetXY, 'EPSG:3857', 'EPSG:4326')

  // Move and Present
  movePvr(osm.startPvr, osm.startFeature, newlnglat)
  GetPvrRelationLocal()
}


function meetPoint(tan1, tan2, point1, point2){
  /**
   * @summary - return Meet point by 2 Line
   */

  let meetXY, meetX, meetY
  let [x1, y1] = proj4('EPSG:3857', 'EPSG:32652').forward(point1)
  let [x2, y2] = tm2 = proj4('EPSG:3857', 'EPSG:32652').forward(point2)
  meetX = - ((y1-y2) - (tan1*x1 - tan2*x2)) / (tan1 - tan2)
  meetY = tan1*(meetX - x1) + y1

  // move pvr
  try {
    meetXY = proj4('EPSG:3857', 'EPSG:32652').inverse([meetX, meetY])
    // todo - if not in extent - alert
    return meetXY
  }
  catch(error) {
    alert("좌표 오류입니다. 다시 보정 진행해주세요.")
    console.log(error)
    return ERROR
  }
}

function correctionPoint(coor, count){
  /**
   * @summary - reset Correction 
   * @since - correction complete or restart
   */
  osm.correction[count] = coor
  let loc = new ol.geom.Point(coor)
  let feature = new ol.Feature({ geometry: loc })
  feature.setProperties({'correctionCount': count})
  correctionLayer.getSource().addFeature(feature)
}

How to add/remove a feature from a vector layer render

To add or remove a feature from a layer render, you must first make a layer render to a map with your data source. Read the How to make a layer render as a vector or add a vector layer to a map art...

https://evouala.zendesk.com/hc/en-us/articles/115002500712-How-to-add-remove-a-feature-from-a-vector-layer-render

• 이거 설명 잘대있음 proto 에 함수 다 나오는게 아니구나.. getsource() 좋다