feat(TGAReader): add vtkTGAReader

Sources/IO/Image/TGAReader/Constants.js

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+const TYPE_INDEXED = 1;
+const TYPE_RGB = 2;
+const TYPE_GREY = 3;
+const TYPE_RLE_INDEXED = 9;
+const TYPE_RLE_RGB = 10;
+const TYPE_RLE_GREY = 11;
+const ORIGIN_MASK = 0x30;
+const ORIGIN_SHIFT = 0x04;
+const ORIGIN_BL = 0x00;
+const ORIGIN_BR = 0x01;
+const ORIGIN_UL = 0x02;
+const ORIGIN_UR = 0x03;
+
+export default {
+  TYPE_INDEXED,
+  TYPE_RGB,
+  TYPE_GREY,
+  TYPE_RLE_INDEXED,
+  TYPE_RLE_RGB,
+  TYPE_RLE_GREY,
+  ORIGIN_MASK,
+  ORIGIN_SHIFT,
+  ORIGIN_BL,
+  ORIGIN_BR,
+  ORIGIN_UL,
+  ORIGIN_UR,
+};

Sources/IO/Image/TGAReader/example/index.js

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+import '@kitware/vtk.js/favicon';
+
+// Load the rendering pieces we want to use (for both WebGL and WebGPU)
+import '@kitware/vtk.js/Rendering/Profiles/Geometry';
+
+import vtkFullScreenRenderWindow from '@kitware/vtk.js/Rendering/Misc/FullScreenRenderWindow';
+import vtkActor from '@kitware/vtk.js/Rendering/Core/Actor';
+import vtkMapper from '@kitware/vtk.js/Rendering/Core/Mapper';
+import vtkPlaneSource from '@kitware/vtk.js/Filters/Sources/PlaneSource';
+import vtkTGAReader from '@kitware/vtk.js/IO/Image/TGAReader';
+import vtkTexture from '@kitware/vtk.js/Rendering/Core/Texture';
+import vtkURLExtract from '@kitware/vtk.js/Common/Core/URLExtract';
+
+// ----------------------------------------------------------------------------
+// Example code
+// ----------------------------------------------------------------------------
+const userParams = vtkURLExtract.extractURLParameters();
+
+const reader = vtkTGAReader.newInstance();
+const texture = vtkTexture.newInstance();
+const planeSource = vtkPlaneSource.newInstance();
+const mapper = vtkMapper.newInstance();
+const actor = vtkActor.newInstance();
+mapper.setInputConnection(planeSource.getOutputPort());
+actor.setMapper(mapper);
+
+// ----------------------------------------------------------------------------
+// Use a file reader to load a local file
+// ----------------------------------------------------------------------------
+
+const myContainer = document.querySelector('body');
+const fileContainer = document.createElement('div');
+fileContainer.innerHTML =
+  '<div>Select a tga file.<br/><input type="file" class="file"/></div>';
+myContainer.appendChild(fileContainer);
+
+const fileInput = fileContainer.querySelector('input');
+
+function zoomCameraToFitPlane(camera, planeWidth, planeHeight) {
+  const fov = 60; // Field of view in degrees
+
+  // Calculate the distance needed to fit the plane in view
+  const distance =
+    Math.max(planeWidth, planeHeight) /
+    (2 * Math.tan((fov * Math.PI) / 180 / 2));
+
+  // Set camera position
+  camera.setPosition(planeWidth / 2, planeHeight / 2, distance);
+  camera.setFocalPoint(planeWidth / 2, planeHeight / 2, 0);
+  camera.setViewUp(0, 1, 0);
+
+  // Set parallel scale for orthographic projection
+  camera.setParallelScale(planeHeight / 2);
+}
+
+function update() {
+  // Get the vtkImageData from the reader
+  const imageData = reader.getOutputData(0);
+
+  // Set the vtkImageData as the texture input
+  texture.setInputData(imageData);
+
+  // // Get the image's extent and spacing
+  const [xMin, xMax, yMin, yMax] = imageData.getExtent();
+  const [spacingX, spacingY] = imageData.getSpacing();
+
+  // // Calculate the plane's width and height based on the image's dimensions
+  const planeWidth = (xMax - xMin + 1) * spacingX;
+  const planeHeight = (yMax - yMin + 1) * spacingY;
+
+  // Set the plane's origin and corners based on calculated width and height
+  planeSource.setOrigin(0, 0, 0);
+  planeSource.setPoint1(planeWidth, 0, 0); // Horizontal edge
+  planeSource.setPoint2(0, planeHeight, 0); // Vertical edge
+
+  actor.addTexture(texture);
+
+  const fullScreenRenderer = vtkFullScreenRenderWindow.newInstance();
+  const renderer = fullScreenRenderer.getRenderer();
+  const renderWindow = fullScreenRenderer.getRenderWindow();
+  const camera = renderer.getActiveCamera();
+  const interactor = renderWindow.getInteractor();
+
+  // Disable default interactor style
+  interactor.setInteractorStyle(null);
+
+  renderer.addActor(actor);
+
+  // Adjust the camera to fit the plane in the view
+  zoomCameraToFitPlane(camera, planeWidth, planeHeight);
+  renderer.resetCameraClippingRange();
+
+  renderWindow.render();
+}
+
+function handleFile(event) {
+  event.preventDefault();
+  const dataTransfer = event.dataTransfer;
+  const files = event.target.files || dataTransfer.files;
+  if (files.length === 1) {
+    const file = files[0];
+    const fileReader = new FileReader();
+    fileReader.onload = () => {
+      reader.parse(fileReader.result);
+      update();
+    };
+    fileReader.readAsArrayBuffer(file);
+  }
+}
+
+fileInput.addEventListener('change', handleFile);
+
+// ----------------------------------------------------------------------------
+// Use the reader to download a file
+// ----------------------------------------------------------------------------
+if (userParams.fileURL) {
+  reader.setUrl(userParams.fileURL).then(() => {
+    reader.loadData().then(() => {
+      update();
+    });
+  });
+}

Sources/IO/Image/TGAReader/index.d.ts

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+import { vtkAlgorithm, vtkObject } from '../../../interfaces';
+import HtmlDataAccessHelper from '../../Core/DataAccessHelper/HtmlDataAccessHelper';
+import HttpDataAccessHelper from '../../Core/DataAccessHelper/HttpDataAccessHelper';
+import JSZipDataAccessHelper from '../../Core/DataAccessHelper/JSZipDataAccessHelper';
+import LiteHttpDataAccessHelper from '../../Core/DataAccessHelper/LiteHttpDataAccessHelper';
+
+interface ITGAReaderOptions {
+  compression?: string;
+  progressCallback?: any;
+}
+
+/**
+ *
+ */
+export interface ITGAReaderInitialValues {}
+
+type vtkTGAReaderBase = vtkObject &
+  Omit<
+    vtkAlgorithm,
+    | 'getInputData'
+    | 'setInputData'
+    | 'setInputConnection'
+    | 'getInputConnection'
+    | 'addInputConnection'
+    | 'addInputData'
+  >;
+
+export interface vtkTGAReader extends vtkTGAReaderBase {
+  /**
+   * Get the base url.
+   */
+  getBaseURL(): string;
+
+  /**
+   * Get the dataAccess helper.
+   */
+  getDataAccessHelper():
+    | HtmlDataAccessHelper
+    | HttpDataAccessHelper
+    | JSZipDataAccessHelper
+    | LiteHttpDataAccessHelper;
+
+  /**
+   * Get the url of the object to load.
+   */
+  getUrl(): string;
+
+  /**
+   * Load the object data.
+   * @param {ITGAReaderOptions} [options]
+   */
+  loadData(options?: ITGAReaderOptions): Promise<any>;
+
+  /**
+   * Parse data.
+   * @param {ArrayBuffer} content The content to parse.
+   */
+  parse(content: ArrayBuffer): void;
+
+  /**
+   * Parse data as ArrayBuffer.
+   * @param {ArrayBuffer} content The content to parse.
+   */
+  parseAsArrayBuffer(content: ArrayBuffer): void;
+
+  /**
+   *
+   * @param inData
+   * @param outData
+   */
+  requestData(inData: any, outData: any): void;
+
+  /**
+   *
+   * @param dataAccessHelper
+   */
+  setDataAccessHelper(
+    dataAccessHelper:
+      | HtmlDataAccessHelper
+      | HttpDataAccessHelper
+      | JSZipDataAccessHelper
+      | LiteHttpDataAccessHelper
+  ): boolean;
+
+  /**
+   * Set the url of the object to load.
+   * @param {String} url the url of the object to load.
+   * @param {ITGAReaderOptions} [option] The PLY reader options.
+   */
+  setUrl(url: string, option?: ITGAReaderOptions): Promise<string | any>;
+}
+
+/**
+ * Method used to decorate a given object (publicAPI+model) with vtkTGAReader characteristics.
+ *
+ * @param publicAPI object on which methods will be bounds (public)
+ * @param model object on which data structure will be bounds (protected)
+ * @param {ITGAReaderInitialValues} [initialValues] (default: {})
+ */
+export function extend(
+  publicAPI: object,
+  model: object,
+  initialValues?: ITGAReaderInitialValues
+): void;
+
+/**
+ * Method used to create a new instance of vtkTGAReader
+ * @param {ITGAReaderInitialValues} [initialValues] for pre-setting some of its content
+ */
+export function newInstance(
+  initialValues?: ITGAReaderInitialValues
+): vtkTGAReader;
+
+/**
+ * vtkTGAReader is a source object that reads Truevision Targa(TGA) files.
+ */
+export declare const vtkTGAReader: {
+  newInstance: typeof newInstance;
+  extend: typeof extend;
+};
+export default vtkTGAReader;