In This Topic ▼

engine Property

Summary

The engine used to retrieve the panoramic output.

Syntax

TypeScript

JavaScript

Object.defineProperty(PanoramicCell.prototype, 'engine', 
	get: function(), 
	set: function(value) 
)

engine: Object3DEngine;

Property Value

Object3DEngine used to retrieve the panoramic output.

Remarks

Do not use the engine until it is fully created. To determine whether the engine is ready for use, call VolumeReady.

For more information about creating a 3D engine, see Object3DEngine.

Example

PanoramicPolygon.js

MedicalViewer_MultiFrame_Example.js

PanoramicPolygon.ts

MedicalViewer_MultiFrame_Example.ts

PanoramicPolygon.html

 
import { MedicalViewer_MultiFrame_Example } from "../MedicalViewer_MultiFrame_Example"; 
 
export class PanoramicPolygon_Example { 
    constructor() { 
        this.run = (medicalViewer, authenticationCode) => { 
            this.medicalViewer = medicalViewer; 
            // we are going to get the cell that contains the polygon in order to generate the panoramic cell. 
            var cell = this.medicalViewer.layout.cells.get_item(0); 
            var _frame = cell.frames.get_item(cell.currentOffset); 
            var _polygon; 
            // enable the action that will allow the user to draw a panoramic polygon. 
            var action = new lt.Controls.Medical.PanoramicAction(cell); 
            // the panoramic polygon has been created, now we will generate the 3d data in order to generate teh panoramic polygon. 
            action.panoramicGenerated.add((sender, e) => { 
                var panoramicCell; 
                var threed = "https://medicaldemos.leadtools.com/MedicalViewerServiceAsp22/api/threed/"; 
                // create a panoramic cell. 
                panoramicCell = new lt.Controls.Medical.PanoramicCell(medicalViewer, cell.divID + "_Panoramic"); 
                medicalViewer.layout.cells.add(panoramicCell); 
                panoramicCell.URI = threed + "/GetPanoramicImage?auth=" + authenticationCode; 
                var engine3D = new lt.Controls.Medical.Object3DEngine(cell.divID + "_3D_Volume"); 
                var _polygon = sender; 
                engine3D.add_request3DData(function (sender, args) { 
                    switch (args.type) { 
                        case lt.Controls.Medical.Requested3DDataType.creationProgress: 
                            { 
                                var request3DDataPost = new XMLHttpRequest(); 
                                request3DDataPost.onreadystatechange = function (data) { 
                                    if (this.readyState == 4 && this.status == 200) { 
                                        var percent = parseInt(JSON.parse(this.responseText)); 
                                        if (engine3D.progress != 100) 
                                            engine3D.progress = percent; 
                                    } 
                                }; 
                                request3DDataPost.open("POST", threed + "CheckProgress", true); 
                                request3DDataPost.setRequestHeader('Content-Type', 'application/json; charset=UTF-8'); 
                                var progressSettings = { 
                                    authenticationCookie: authenticationCode, 
                                    id: engine3D.id 
                                }; 
                                request3DDataPost.send(JSON.stringify(progressSettings)); 
                            } 
                            break; 
                        case lt.Controls.Medical.Requested3DDataType.create3DObject: 
                            { 
                                var request3DDataPost = new XMLHttpRequest(); 
                                ; 
                                request3DDataPost.open("POST", threed + "Create3DObject", true); 
                                request3DDataPost.setRequestHeader('Content-Type', 'application/json; charset=UTF-8'); 
                                var seriesInstanceUID = "1.3.12.2.1107.5.1.4.50772.30000009122208215356200001997"; 
                                var create3DOptions = { 
                                    authenticationCookie: authenticationCode, 
                                    options: { PatientsOptions: {}, SeriesOptions: { SeriesInstanceUID: seriesInstanceUID }, StudiesOptions: {} }, 
                                    id: engine3D.id, 
                                    renderingType: 0, 
                                    extraOptions: { UserData2: "1.3.12.2.1107.5.1.4.50772.30000009122208215356200002253" } 
                                }; 
                                request3DDataPost.send(JSON.stringify(create3DOptions)); 
                            } 
                            break; 
                        case lt.Controls.Medical.Requested3DDataType.delete3DObject: 
                            { 
                                var request3DDataPost = new XMLHttpRequest(); 
                                request3DDataPost.onreadystatechange = function (data) { 
                                }; 
                                request3DDataPost.open("POST", threed + "End3DObject", true); 
                                request3DDataPost.setRequestHeader('Content-Type', 'application/json; charset=UTF-8'); 
                                var endObjectSettings = { 
                                    authenticationCookie: authenticationCode, 
                                    id: engine3D.id 
                                }; 
                                request3DDataPost.send(JSON.stringify(endObjectSettings)); 
                            } 
                            break; 
                    } 
                }); 
                engine3D.add_statusChanged(function (sender, args) { 
                    switch (args.status) { 
                        case lt.Controls.Medical.Object3DStatus.ready: 
                            if (panoramicCell.engine.progress == 100) { 
                                panoramicCell.seriesInstanceUID = cell.seriesInstanceUID; 
                                panoramicCell.studyInstanceUID = cell.studyInstanceUID + "_Panoramic"; 
                                var info = _frame.information.clone(); 
                                var frame = panoramicCell.frames.get_item(0); 
                                frame.set_information(info); 
                                panoramicCell.polygon = _polygon; 
                            } 
                            break; 
                    } 
                }); 
                engine3D.start("", cell.studyInstanceUID, cell.seriesInstanceUID); 
                panoramicCell.engine = engine3D; 
                setTimeout(function () { 
                    engine3D.end(); 
                    alert('this demo has a timer that will dispose the 3D object in 30 seconds, the time has lapsed... changed the timeout to make the 3D stay longer.'); 
                }, 30000); 
            }); 
            cell.setCommand(0, action); 
            cell.runCommand(0); 
        }; 
        this.viewerExample = new MedicalViewer_MultiFrame_Example(this.run); 
    } 
}

export class MedicalViewer_MultiFrame_Example { 
    constructor(callback) { 
        var _this = this; 
        // LEADTOOLS ImageViewer to be used with this example 
        this.medicalViewer = null; 
        // Generic state value used by the examples 
        this.timesClicked = 0; 
        this.authenticationCode = ""; 
        // Set the LEADTOOLS license. Replace this with your actual license file 
        lt.RasterSupport.setLicenseUri("https://demo.leadtools.com/licenses/js/LEADTOOLSEVAL.txt", "EVAL", null); 
        // Create an image viewer inside the imageViewerDiv element 
        var imageViewerDiv = document.getElementById("imageViewerDiv"); 
        var createOptions = new lt.Controls.ImageViewerCreateOptions(imageViewerDiv); 
        var aspPath = "https://medicaldemos.leadtools.com/MedicalViewerServiceAsp22/"; 
        this.medicalViewer = new lt.Controls.Medical.MedicalViewer(imageViewerDiv, 2, 2); 
        this.medicalViewer.onSizeChanged(); 
        var cell = new lt.Controls.Medical.Cell(this.medicalViewer, null, 1, 1); 
        // Set the show border to "true", to show a border around the cell.  
        cell.set_showFrameBorder(true); 
        // Add the cell to the viewer.   
        this.medicalViewer.layout.get_items().add(cell); 
        // [optional] Select the cell (it can also be selected by clicking on it.)  
        cell.set_selected(true); 
        cell.fullDownload = false; 
        cell.marginFramesCount = 3; 
        var self = this; 
        // we are now going to to download an image from leadtools medical viewer demo web site, you need to change this to download images from your database.  
        var xhttp = new XMLHttpRequest(); 
        xhttp.onreadystatechange = function (data) { 
            if (this.readyState == 4 && this.status == 200) { 
                // here we got the authentication Code that we need to retrieve the images from leadtools database.  
                self.authenticationCode = this.responseText; 
                var encodedAuthenticationCode = self.authenticationCode; 
                // we get here the object retrieve address that points to a service that retireves the information and the images from the server. 
                var objectRetrieveAddress = aspPath + "api/retrieve"; 
                var objectRetrieveQueryAddress = aspPath + "api/query"; 
                var studyInstanceUID = "1.3.12.2.1107.5.1.4.50772.30000009122208074910900000022"; 
                // this is the series instance UID that contains all the frames that will be retrieved. 
                var seriesInstanceUID = "1.3.12.2.1107.5.1.4.50772.30000009122208215356200001997"; 
                cell.seriesInstanceUID = seriesInstanceUID; 
                cell.studyInstanceUID = studyInstanceUID; 
                // we are generating the address for retrieving the instances information. 
                var queryArchive = objectRetrieveQueryAddress; 
                queryArchive += "/FindInstances"; 
                var getStackRequest = new XMLHttpRequest(); 
                getStackRequest.onreadystatechange = function (data) { 
                    if (this.readyState == 4 && this.status == 200) { 
                        var json = JSON.parse(this.responseText); 
                        var instanceIndex = 0; 
                        // if instance count is zero, then the study doesn't exist on the server. 
                        var instanceCount = json.length; 
                        // add frames based on the size of the number of instances. 
                        for (instanceIndex = 0; instanceIndex < instanceCount; instanceIndex++) { 
                            var cellFrame = new lt.Controls.Medical.Frame(cell); 
                            cell.get_frames().add(cellFrame); 
                        } 
                        // loop through every frame, and prepare the data. 
                        for (instanceIndex = 0; instanceIndex < instanceCount; instanceIndex++) { 
                            cellFrame = cell.get_frames().get_item(instanceIndex); 
                            var pageInfo = json[instanceIndex].Pages[0]; 
                            cellFrame.imagePosition = pageInfo.ImagePositionPatientArray; 
                            cellFrame.imageOrientation = pageInfo.ImageOrientationPatientArray; 
                            if (pageInfo.PixelSpacingPatientArray != null && pageInfo.PixelSpacingPatientArray.length == 2) { 
                                cellFrame.set_rowSpacing(parseFloat(pageInfo.PixelSpacingPatientArray[1])); 
                                cellFrame.set_columnSpacing(parseFloat(pageInfo.PixelSpacingPatientArray[0])); 
                            } 
                            // now, this is the MRTI info that contains the image information, width, height, tiles....etc.  
                            var mrtiInfo = new lt.Controls.Medical.MRTIImage(); 
                            // The image dpi.  
                            mrtiInfo.fullDpi = lt.LeadSizeD.create(150, 150); 
                            // the tile size, recommended value is 256  
                            mrtiInfo.tileSize = lt.LeadSizeD.create(512, 512); 
                            mrtiInfo.frameIndex = 0; 
                            // does this image support window leve.  
                            mrtiInfo.supportWindowLevel = true; 
                            // different resolution for the image.  
                            var resolutions = [{ "width": 512, "height": 512 }, { "width": 256, "height": 256 }, { "width": 128, "height": 128 }, { "width": 64, "height": 64 }]; 
                            mrtiInfo.resolutions = []; 
                            for (var i = 0; i < resolutions.length; i++) { 
                                mrtiInfo.resolutions[i] = lt.LeadSizeD.create(resolutions[i].width, resolutions[i].height); 
                            } 
                            // the image width and height.  
                            cellFrame.set_width(mrtiInfo.resolutions[0].width); 
                            cellFrame.set_height(mrtiInfo.resolutions[0].height); 
                            // the image full size.  
                            mrtiInfo.fullSize = lt.LeadSizeD.create(cellFrame.get_width(), cellFrame.get_height()); 
                            // now we need the image URL,  
                            var imageUri = objectRetrieveAddress; 
                            imageUri += "/GetImageTile?auth="; 
                            imageUri += encodedAuthenticationCode; 
                            // this the image instance UID, change this if you want to retrieve anything else.  
                            imageUri += "&instance=" + json[instanceIndex].SOPInstanceUID; 
                            mrtiInfo.imageUri = imageUri; 
                            // set this info to the cell frame.  
                            cellFrame.mrtiInfo = mrtiInfo; 
                            // now we need to set the information for the image so we can do window level.  
                            var imageInfo = new lt.Controls.Medical.DICOMImageInformation(); 
                            // set the image width and height.  
                            imageInfo.width = 512; 
                            imageInfo.height = 512; 
                            // bits per pixel for the image  
                            imageInfo.bitsPerPixel = 16; 
                            // low and high bit.  
                            imageInfo.lowBit = 0; 
                            imageInfo.highBit = 11; 
                            // other information, setting some of them to zero means that the toolkit will try and calculate it by itself, but you can always get those values from the DicomDataSet.  
                            imageInfo.modalityIntercept = -1024; 
                            imageInfo.modalitySlope = 1; 
                            imageInfo.minValue = 0; 
                            imageInfo.maxValue = 0; 
                            imageInfo.windowWidth = 200; 
                            imageInfo.windowCenter = 40; 
                            imageInfo.signed = false; 
                            imageInfo.photometricInterpretation = 'MONOCHROME2'; 
                            imageInfo.firstStoredPixelValueMapped = 0; 
                            // set these information to the frame.  
                            cellFrame.set_information(imageInfo); 
                        } 
                        // scroll to the middle of the series. 
                        cell.currentOffset = instanceCount >> 1; 
                    } 
                }; 
                getStackRequest.open("POST", queryArchive, true); 
                getStackRequest.setRequestHeader('Content-Type', 'application/json; charset=UTF-8'); 
                var queryParams = { 
                    "PatientsOptions": {}, 
                    "StudiesOptions": {}, 
                    "SeriesOptions": { "SeriesInstanceUID": seriesInstanceUID } 
                }; 
                var findInstanceData = { 
                    authenticationCookie: encodedAuthenticationCode, 
                    options: queryParams, 
                    extraOptions: { UserData2: "" } 
                }; 
                getStackRequest.send(JSON.stringify(findInstanceData)); 
            } 
        }; 
        // We are trying here to get an image from the Leadtools database, we need to login and get the authentication code.  
        xhttp.open("POST", "https://medicaldemos.leadtools.com/MedicalViewerServiceAsp22/api/auth/AuthenticateUser", true); 
        xhttp.setRequestHeader('Content-Type', 'application/json; charset=UTF-8'); 
        // we log in as a 'guest', after calling the below line, we will receive the authentication code sent via 'onreadystatechange' above.  
        xhttp.send(JSON.stringify({ userName: 'guest', password: 'guest', userData: '' })); 
        var exampleButton = document.getElementById("exampleButton"); 
        exampleButton.addEventListener("click", function () { 
            _this.timesClicked++; 
            // Run the example 
            if (callback) 
                callback(_this.medicalViewer, _this.authenticationCode); 
        }); 
    } 
}

import { MedicalViewer_MultiFrame_Example } from "../MedicalViewer_MultiFrame_Example"; 
 
 
export class PanoramicPolygon_Example { 
   private viewerExample; 
   private medicalViewer; 
   constructor() { 
      this.viewerExample = new MedicalViewer_MultiFrame_Example(this.run); 
   } 
 
   private fillVolumeInfo(cell: lt.Controls.Medical.Cell): lt.Controls.Medical.Volume3DInformation { 
 
      if (!cell) 
         return; 
 
      if (!cell.frames || (cell.frames.count < 2)) 
         return; 
 
      var firstFrame: lt.Controls.Medical.Frame = cell.frames.get_item(0); 
 
      var lastFrame: lt.Controls.Medical.Frame = cell.frames.get_item(cell.frames.count - 1); 
 
      var width = firstFrame.width; 
      var height = firstFrame.height; 
      var rowspacing = firstFrame.rowSpacing; 
      var colSpacing = firstFrame.columnSpacing; 
      var firstPosition = lt.Controls.Medical.LeadPoint3D.create(firstFrame.imagePosition[0], firstFrame.imagePosition[1], firstFrame.imagePosition[2]); 
      var lastPostion = lt.Controls.Medical.LeadPoint3D.create(lastFrame.imagePosition[0], lastFrame.imagePosition[1], lastFrame.imagePosition[2]); 
      var orientation = firstFrame.imageOrientation; 
 
      return new lt.Controls.Medical.Volume3DInformation(orientation, firstPosition, lastPostion, rowspacing, colSpacing, width, height); 
   } 
 
   private run = (medicalViewer: lt.Controls.Medical.MedicalViewer, authenticationCode: string) => { 
      this.medicalViewer = medicalViewer; 
 
      // we are going to get the cell that contains the polygon in order to generate the panoramic cell. 
      var cell: lt.Controls.Medical.Cell = this.medicalViewer.layout.cells.get_item(0); 
      var _frame: lt.Controls.Medical.Frame = cell.frames.get_item(cell.currentOffset); 
      var engine3D: lt.Controls.Medical.Object3DEngine = new lt.Controls.Medical.Object3DEngine(cell.divID + "_3D_Volume"); 
      engine3D.info = this.fillVolumeInfo(cell); 
 
 
 
      var panoramicCell: lt.Controls.Medical.PanoramicCell = new lt.Controls.Medical.PanoramicCell(cell.viewer, cell, cell.divID + "_ParaxialSlices"); 
      panoramicCell.frameOfReferenceUID = cell.frameOfReferenceUID; 
      panoramicCell.frames.add(new lt.Controls.Medical.SliceFrame(panoramicCell, panoramicCell.engine)); 
 
 
      var panoramicPolygon: lt.Controls.Medical.PanoramicPolygon = new lt.Controls.Medical.PanoramicPolygon(cell); 
      cell.drawables["PanoramicPolygon"] = panoramicPolygon; 
 
      panoramicPolygon.points.add(lt.LeadPointD.create(128, 300)); 
      panoramicPolygon.points.add(lt.LeadPointD.create(200, 128)); 
      panoramicPolygon.points.add(lt.LeadPointD.create(300, 128)); 
      panoramicPolygon.points.add(lt.LeadPointD.create(372, 300)); 
      panoramicPolygon.refresh(); 
 
      panoramicPolygon.panoramicCell = panoramicCell; 
 
 
      cell.drawables["PanoramicPolygon"] = panoramicPolygon; 
 
      cell.viewer.layout.cells.add(panoramicCell); 
 
      // this is the service name that will do the server side rendering. 
      var threed = "https://medicaldemos.leadtools.com/MedicalViewerServiceAsp22/api/threed/"; 
 
      engine3D.add_request3DData(function (sender, args: lt.Controls.Medical.Request3DDataEventArgs) { 
 
         switch (args.type) { 
            case lt.Controls.Medical.Requested3DDataType.creationProgress: 
               { 
                  var request3DDataPost = new XMLHttpRequest(); 
                  request3DDataPost.onreadystatechange = function (data) { 
                     if (this.readyState == 4 && this.status == 200) { 
                        var percent = parseInt(JSON.parse(this.responseText)); 
                        if (engine3D.progress != 100) 
                           engine3D.progress = percent; 
                     } 
                  }; 
 
                  request3DDataPost.open("POST", threed + "CheckProgress", true); 
                  request3DDataPost.setRequestHeader('Content-Type', 'application/json; charset=UTF-8'); 
 
                  var progressSettings = 
                  { 
                     authenticationCookie: authenticationCode, 
                     id: engine3D.id 
                  } 
 
                  request3DDataPost.send(JSON.stringify(progressSettings)); 
               } 
               break; 
 
            case lt.Controls.Medical.Requested3DDataType.create3DObject: 
               { 
                  var request3DDataPost = new XMLHttpRequest();; 
                  request3DDataPost.open("POST", threed + "Create3DObject", true); 
                  request3DDataPost.setRequestHeader('Content-Type', 'application/json; charset=UTF-8'); 
 
                  var seriesInstanceUID = "1.3.12.2.1107.5.1.4.50772.30000009122208215356200001997" 
 
                  var create3DOptions = { 
                     authenticationCookie: authenticationCode, 
                     options: { PatientsOptions: {}, SeriesOptions: { SeriesInstanceUID: seriesInstanceUID }, StudiesOptions: {} }, 
                     id: engine3D.id, 
                     renderingType: 0, 
                     extraOptions: { UserData2: "1.3.12.2.1107.5.1.4.50772.30000009122208215356200002253" } 
                  }; 
 
                  request3DDataPost.send(JSON.stringify(create3DOptions)); 
               } 
               break; 
 
 
            case lt.Controls.Medical.Requested3DDataType.delete3DObject: 
               { 
                  var request3DDataPost = new XMLHttpRequest(); 
                  request3DDataPost.onreadystatechange = function (data) { }; 
 
                  request3DDataPost.open("POST", threed + "End3DObject", true); 
                  request3DDataPost.setRequestHeader('Content-Type', 'application/json; charset=UTF-8'); 
 
                  var endObjectSettings = 
                  { 
                     authenticationCookie: authenticationCode, 
                     id: engine3D.id 
                  } 
 
                  request3DDataPost.send(JSON.stringify(endObjectSettings)); 
               } 
 
            case lt.Controls.Medical.Requested3DDataType.none: 
               { 
                  var request3DDataPost = new XMLHttpRequest(); 
                  var json = JSON.parse(args.JSON); 
                  var widthCurve = json['widthCurve']; 
                  var heightCurve = json['heightCurve']; 
                  var polygonInfo = JSON.stringify(json['polygonInfo']); 
 
 
                  var generateSliceData = { 
                     authenticationCookie: authenticationCode, 
                     id: engine3D.id, 
                     widthCurve: widthCurve, 
                     heightCurve: heightCurve, 
                     polygonInfo: polygonInfo 
                  }; 
 
                  request3DDataPost.onreadystatechange = function (result: any) { 
 
                     if (this.readyState == 4 && this.status == 200) { 
                        var url = this.responseText; 
 
                        (<any>args.get_frame()).URI = threed + "Get3DSlice?auth=" + encodeURIComponent(authenticationCode) + "&url=" + url + "&fileName="; 
                     } 
                  }; 
 
                  request3DDataPost.open("POST", threed + "Generate3DSlice", true); 
                  request3DDataPost.setRequestHeader('Content-Type', 'application/json; charset=UTF-8'); 
                  request3DDataPost.send(JSON.stringify(generateSliceData)); 
               } 
               break; 
         } 
 
      }); 
 
      engine3D.add_statusChanged(function (sender, args: lt.Controls.Medical.StatusChangedEventArgs) { 
 
         switch (args.status) { 
            case lt.Controls.Medical.Object3DStatus.ready: 
 
               var info: any = _frame.information.clone(); 
 
 
               if (info != null) { 
                  var myInfo: lt.Controls.Medical.DICOMImageInformation = <lt.Controls.Medical.DICOMImageInformation>info.clone(); 
                  myInfo.windowWidth = 3000; 
                  myInfo.windowCenter = 1500; 
 
                  panoramicCell.frames.get_item(0).information = myInfo; 
               } 
 
               cell.invalidate(lt.LeadRectD.empty); 
               break; 
         } 
      }); 
 
      panoramicCell.engine = engine3D; 
 
      engine3D.start("", cell.studyInstanceUID, cell.seriesInstanceUID); 
 
 
 
 
      var action: lt.Controls.Medical.WindowLevelAction = new lt.Controls.Medical.WindowLevelAction(0); 
 
      panoramicCell.setCommand(0, action); 
      panoramicCell.runCommand(0); 
   } 
}

export class MedicalViewer_MultiFrame_Example { 
   // LEADTOOLS ImageViewer to be used with this example 
   protected medicalViewer: lt.Controls.Medical.MedicalViewer = null; 
   // Generic state value used by the examples 
   public timesClicked: number = 0; 
   public authenticationCode: string = ""; 
 
   constructor(callback?: (medicalViewer: lt.Controls.Medical.MedicalViewer, authenticationCode: string) => void) { 
      // Set the LEADTOOLS license. Replace this with your actual license file 
      lt.RasterSupport.setLicenseUri("https://demo.leadtools.com/licenses/js/LEADTOOLSEVAL.txt", "EVAL", null); 
 
      // Create an image viewer inside the imageViewerDiv element 
      const imageViewerDiv: HTMLDivElement = <HTMLDivElement>document.getElementById("imageViewerDiv"); 
      const createOptions: lt.Controls.ImageViewerCreateOptions = new lt.Controls.ImageViewerCreateOptions(imageViewerDiv); 
 
 
 
      var aspPath = "https://medicaldemos.leadtools.com/MedicalViewerServiceAsp22/"; 
 
      this.medicalViewer = new lt.Controls.Medical.MedicalViewer(imageViewerDiv, 2, 2); 
      this.medicalViewer.onSizeChanged(); 
 
      var cell = new lt.Controls.Medical.Cell(this.medicalViewer, null, 1, 1); 
 
      // Set the show border to "true", to show a border around the cell.  
      cell.set_showFrameBorder(true); 
 
      // Add the cell to the viewer.   
      this.medicalViewer.layout.get_items().add(cell); 
 
      // [optional] Select the cell (it can also be selected by clicking on it.)  
      cell.set_selected(true); 
 
      cell.fullDownload = false; 
      cell.marginFramesCount = 3; 
 
      var self = this; 
 
      // we are now going to to download an image from leadtools medical viewer demo web site, you need to change this to download images from your database.  
      var xhttp = new XMLHttpRequest(); 
      xhttp.onreadystatechange = function (data) { 
         if (this.readyState == 4 && this.status == 200) { 
            // here we got the authentication Code that we need to retrieve the images from leadtools database.  
 
            self.authenticationCode = this.responseText; 
            var encodedAuthenticationCode = self.authenticationCode; 
 
            // we get here the object retrieve address that points to a service that retireves the information and the images from the server. 
            var objectRetrieveAddress = aspPath + "api/retrieve"; 
            var objectRetrieveQueryAddress = aspPath + "api/query"; 
 
            var studyInstanceUID = "1.3.12.2.1107.5.1.4.50772.30000009122208074910900000022"; 
            // this is the series instance UID that contains all the frames that will be retrieved. 
            var seriesInstanceUID = "1.3.12.2.1107.5.1.4.50772.30000009122208215356200001997" 
 
            cell.seriesInstanceUID = seriesInstanceUID; 
            cell.studyInstanceUID = studyInstanceUID; 
 
            // we are generating the address for retrieving the instances information. 
            var queryArchive = objectRetrieveQueryAddress; 
            queryArchive += "/FindInstances"; 
 
 
            var getStackRequest = new XMLHttpRequest(); 
            getStackRequest.onreadystatechange = function (data) { 
               if (this.readyState == 4 && this.status == 200) { 
                  var json = JSON.parse(this.responseText); 
 
                  var instanceIndex = 0; 
 
                  // if instance count is zero, then the study doesn't exist on the server. 
                  var instanceCount = json.length; 
 
 
                  // add frames based on the size of the number of instances. 
                  for (instanceIndex = 0; instanceIndex < instanceCount; instanceIndex++) { 
                     var cellFrame = new lt.Controls.Medical.Frame(cell); 
                     cell.get_frames().add(cellFrame); 
                  } 
 
                  // loop through every frame, and prepare the data. 
                  for (instanceIndex = 0; instanceIndex < instanceCount; instanceIndex++) { 
 
                     cellFrame = cell.get_frames().get_item(instanceIndex); 
 
                     var pageInfo = json[instanceIndex].Pages[0]; 
 
                     cellFrame.imagePosition = pageInfo.ImagePositionPatientArray; 
 
                     cellFrame.imageOrientation = pageInfo.ImageOrientationPatientArray; 
 
 
                     if (pageInfo.PixelSpacingPatientArray != null && pageInfo.PixelSpacingPatientArray.length == 2) { 
                        cellFrame.set_rowSpacing(parseFloat(pageInfo.PixelSpacingPatientArray[1])); 
                        cellFrame.set_columnSpacing(parseFloat(pageInfo.PixelSpacingPatientArray[0])); 
                     } 
 
 
                     // now, this is the MRTI info that contains the image information, width, height, tiles....etc.  
                     var mrtiInfo = new lt.Controls.Medical.MRTIImage(); 
 
                     // The image dpi.  
                     mrtiInfo.fullDpi = lt.LeadSizeD.create(150, 150); 
 
                     // the tile size, recommended value is 256  
                     mrtiInfo.tileSize = lt.LeadSizeD.create(512, 512); 
                     mrtiInfo.frameIndex = 0; 
 
                     // does this image support window leve.  
                     mrtiInfo.supportWindowLevel = true; 
 
 
                     // different resolution for the image.  
                     var resolutions = [{ "width": 512, "height": 512 }, { "width": 256, "height": 256 }, { "width": 128, "height": 128 }, { "width": 64, "height": 64 }]; 
                     mrtiInfo.resolutions = []; 
                     for (var i = 0; i < resolutions.length; i++) { 
                        mrtiInfo.resolutions[i] = lt.LeadSizeD.create(resolutions[i].width, resolutions[i].height); 
                     } 
 
                     // the image width and height.  
                     cellFrame.set_width(mrtiInfo.resolutions[0].width); 
                     cellFrame.set_height(mrtiInfo.resolutions[0].height); 
 
                     // the image full size.  
                     mrtiInfo.fullSize = lt.LeadSizeD.create(cellFrame.get_width(), cellFrame.get_height()); 
 
                     // now we need the image URL,  
                     var imageUri = objectRetrieveAddress; 
                     imageUri += "/GetImageTile?auth="; 
                     imageUri += encodedAuthenticationCode; 
                     // this the image instance UID, change this if you want to retrieve anything else.  
                     imageUri += "&instance=" + json[instanceIndex].SOPInstanceUID; 
 
 
                     mrtiInfo.imageUri = imageUri; 
 
                     // set this info to the cell frame.  
                     cellFrame.mrtiInfo = mrtiInfo; 
 
 
                     // now we need to set the information for the image so we can do window level.  
                     var imageInfo = new lt.Controls.Medical.DICOMImageInformation(); 
 
 
                     // set the image width and height.  
                     imageInfo.width = 512; 
                     imageInfo.height = 512; 
 
                     // bits per pixel for the image  
                     imageInfo.bitsPerPixel = 16; 
                     // low and high bit.  
                     imageInfo.lowBit = 0; 
                     imageInfo.highBit = 11; 
 
                     // other information, setting some of them to zero means that the toolkit will try and calculate it by itself, but you can always get those values from the DicomDataSet.  
                     imageInfo.autoScaleIntercept = -1024; 
                     imageInfo.autoScaleSlope = 1; 
                     imageInfo.minValue = 0; 
                     imageInfo.maxValue = 0; 
                     imageInfo.windowWidth = 200; 
                     imageInfo.windowCenter = 40; 
                     imageInfo.signed = false; 
                     imageInfo.photometricInterpretation = 'MONOCHROME2'; 
                     imageInfo.firstStoredPixelValueMapped = 0; 
 
                     // set these information to the frame.  
 
                     cellFrame.set_information(imageInfo); 
                  } 
 
                  // scroll to the middle of the series. 
                  cell.currentOffset = instanceCount >> 1; 
               } 
            } 
 
            getStackRequest.open("POST", queryArchive, true); 
            getStackRequest.setRequestHeader('Content-Type', 'application/json; charset=UTF-8'); 
 
            var queryParams = 
            { 
               "PatientsOptions": {}, 
               "StudiesOptions": {}, 
               "SeriesOptions": { "SeriesInstanceUID": seriesInstanceUID } 
            }; 
 
 
            var findInstanceData = { 
               authenticationCookie: encodedAuthenticationCode, 
               options: queryParams, 
               extraOptions: { UserData2: "" } 
            }; 
 
 
            getStackRequest.send(JSON.stringify(findInstanceData)); 
 
 
         } 
      }; 
 
      // We are trying here to get an image from the Leadtools database, we need to login and get the authentication code.  
      xhttp.open("POST", "https://medicaldemos.leadtools.com/MedicalViewerServiceAsp22/api/auth/AuthenticateUser", true); 
      xhttp.setRequestHeader('Content-Type', 'application/json; charset=UTF-8'); 
      // we log in as a 'guest', after calling the below line, we will receive the authentication code sent via 'onreadystatechange' above.  
      xhttp.send(JSON.stringify({ userName: 'guest', password: 'guest', userData: '' })); 
 
      const exampleButton = document.getElementById("exampleButton"); 
      exampleButton.addEventListener("click", () => { 
         this.timesClicked++; 
         // Run the example 
         if (callback) 
            callback(this.medicalViewer, this.authenticationCode); 
      }); 
   } 
}

<!doctype html> 
<html lang="en"> 
   <title>Panoramic Polygon Example</title> 
 
<head> 
   <script src="https://code.jquery.com/jquery-2.2.4.min.js" 
      integrity="sha256-BbhdlvQf/xTY9gja0Dq3HiwQF8LaCRTXxZKRutelT44=" crossorigin="anonymous"></script> 
 
   <script src="../../LT/Leadtools.js"></script> 
   <script src="../../LT/Leadtools.Controls.js"></script> 
   <script src="../../LT/Leadtools.Annotations.Engine.js"></script> 
   <script src="../../LT/Leadtools.Annotations.Designers.js"></script> 
   <script src="../../LT/Leadtools.Annotations.Rendering.Javascript.js"></script> 
   <script src="../../LT/Leadtools.Annotations.Automation.js"></script> 
   <script src="../../LT/Leadtools.ImageProcessing.Main.js"></script> 
   <script src="../../LT/Leadtools.ImageProcessing.Color.js"></script> 
   <script src="../../LT/Leadtools.ImageProcessing.Core.js"></script> 
   <script src="../../LT/Leadtools.ImageProcessing.Effects.js"></script> 
   <script src="../../LT/Leadtools.Document.js"></script> 
   <script src="../../LT/Leadtools.Document.Viewer.js"></script> 
   <script src="../../LT/Leadtools.Controls.Medical.js"></script> 
   <style> 
      body { 
         font-family: 'Segoe UI', sans-serif; 
      } 
 
      #imageViewerDiv { 
         border: 1px solid #888; 
         width: 500px; 
         height: 500px; 
         background-color: #eee; 
      } 
   </style> 
 
   <!-- All demo files are bundled and appended to the window --> 
   <script src="../../bundle.js" type="text/javascript"></script> 
</head> 
 
<body  oncontextmenu="return false;"> 
   <p>Draw a panoramic polygon by clicking and tracing a polygon and then double click to end the polygon creation, and create a panoramic output.</p> 
   <div> 
      <button type="button" id="exampleButton">Run Example</button> 
   </div> 
   <div id="imageViewerDiv"></div> 
   <div id="output"></div> 
</body> 
 
<script> 
   window.onload = () => { 
       const example = new window.examples.MedicalViewer.PanoramicPolygon(); 
 
   }; 
</script> 
</html>

Requirements

Target Platforms

Reference

PanoramicCell Class

PanoramicCell Members

Leadtools.Controls.Medical Namespace

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Help Version 23.0.2024.5.7

Leadtools.Controls.Medical Assembly

Introduction

Getting Started

Namespaces

Leadtools.Controls.Medical Namespace

Assemblies