Cursor3DAction Object

Summary

This class represents the 3D cursor action that is used to interactively pinpoint the location of a point on an image, and mark where that point lies in other images that were captured from a different angle.

Syntax
TypeScript
JavaScript
function lt.Controls.Medical.Cursor3DAction 
	extends lt.Controls.Medical.ActionCommand 
class lt.Controls.Medical.Cursor3DAction() 
	extends ActionCommand 
Remarks

This is also called, the spatial locater which allows you to locate a point in space across all image planes.

In order to activate the action, you need to assign it using SetCommand, then run the command using the method RunCommand.

The cells that are used with that action must be from the same patient and from the same study.

This does not work on MPR images. For MPR, use CrossHairAction.

Example
Cursor3D.js
MedicalViewer_MultiFrame_Example.js
Cursor3D.ts
MedicalViewer_MultiFrame_Example.ts
Cursor3D.html
 
import { MedicalViewer_Multi_2DCell_Grid_Example } from "../MedicalViewer_Multi_2DCell_Grid_Example"; 
 
export class Cursor3D_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 cell1 = this.medicalViewer.layout.items.get_item(0); 
            var cell2 = this.medicalViewer.layout.items.get_item(1); 
            var action = new lt.Controls.Medical.Cursor3DAction(); 
            cell1.setCommand(0, action); 
            cell1.runCommand(0); 
            cell2.setCommand(0, action); 
            cell2.runCommand(0); 
        }; 
        this.viewerExample = new MedicalViewer_Multi_2DCell_Grid_Example(this.run); 
    } 
} 
export class MedicalViewer_MultiFrame_Example { 
       constructor(callback) { 
        // 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/v200/LEADTOOLSEVAL.txt", "EVAL", null); 
        // Create an image viewer inside the imageViewerDiv element 
        const imageViewerDiv = document.getElementById("imageViewerDiv"); 
        const createOptions = new lt.Controls.ImageViewerCreateOptions(imageViewerDiv); 
        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 = encodeURIComponent(self.authenticationCode); 
                // we get here the object retrieve address that points to a service that retrieves the information and the images from the server. 
                var objectRetrieveAddress = "https://medicaldemos.leadtools.com/MedicalViewerServiceAsp/api/retrieve"; 
                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 stack data. 
                var getStackAddress = objectRetrieveAddress; 
                getStackAddress += "/GetSeriesStacks?auth="; 
                getStackAddress += encodedAuthenticationCode; 
                getStackAddress += "&seriesinstanceUID=" + seriesInstanceUID; 
                var getStackRequest = new XMLHttpRequest(); 
                getStackRequest.onreadystatechange = function (data) { 
                    if (this.readyState == 4 && this.status == 200) { 
                        var json = JSON.parse(this.responseText)[0]; 
                        var instanceIndex = 0; 
                        var instanceCount = json.SopInstanceUIDs.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); 
                            // 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 level.  
                            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.SopInstanceUIDs[instanceIndex]; 
                            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("GET", getStackAddress, true); 
                getStackRequest.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.  
                getStackRequest.send(); 
            } 
        }; 
        // 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/MedicalViewerServiceAsp/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); 
        }); 
    } 
} 
import { MedicalViewer_Multi_2DCell_Grid_Example } from "../MedicalViewer_Multi_2DCell_Grid_Example"; 
 
 
export class Cursor3D_Example { 
   private viewerExample; 
   private medicalViewer; 
   constructor() { 
      this.viewerExample = new MedicalViewer_Multi_2DCell_Grid_Example(this.run); 
   } 
 
   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 cell1: lt.Controls.Medical.Cell = this.medicalViewer.layout.items.get_item(0); 
      var cell2: lt.Controls.Medical.Cell = this.medicalViewer.layout.items.get_item(1); 
 
      var action: lt.Controls.Medical.Cursor3DAction = new lt.Controls.Medical.Cursor3DAction(); 
 
      cell1.setCommand(0, action); 
      cell1.runCommand(0); 
 
      cell2.setCommand(0, action); 
      cell2.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/v200/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); 
 
 
 
      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  = encodeURIComponent(self.authenticationCode);  
 
           // we get here the object retrieve address that points to a service that retrieves the information and the images from the server. 
           var objectRetrieveAddress =  "https://medicaldemos.leadtools.com/MedicalViewerServiceAsp/api/retrieve"; 
 
           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 stack data. 
           var getStackAddress = objectRetrieveAddress; 
           getStackAddress += "/GetSeriesStacks?auth="; 
           getStackAddress += encodedAuthenticationCode; 
           getStackAddress += "&seriesinstanceUID=" + seriesInstanceUID; 
 
           var getStackRequest  = new XMLHttpRequest();  
           getStackRequest.onreadystatechange = function (data) { 
              if (this.readyState == 4 && this.status == 200) { 
                 var json = JSON.parse(this.responseText)[0]; 
 
                 var instanceIndex = 0; 
                 var instanceCount = json.SopInstanceUIDs.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); 
                    // 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 level.  
                    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.SopInstanceUIDs[instanceIndex]; 
                     
 
                    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("GET", getStackAddress, true);  
           getStackRequest.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.  
           getStackRequest.send(); 
 
 
        }  
      };  
        
      // 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/MedicalViewerServiceAsp/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>Cursor 3D 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>3D Cursor notification.</p> 
   <p>Hold down the left mouse button on one of the cells and notice the blue circle that indicates the position of the clicked points on the other cell.</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.Cursor3D(); 
 
   }; 
</script> 
</html> 
Requirements
Target Platforms
Help Version 21.0.2021.6.30
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Leadtools.Controls.Medical Assembly

Products | Support | Contact Us | Intellectual Property Notices
© 1991-2021 LEAD Technologies, Inc. All Rights Reserved.