From fea0c2650696f07553b7c56745546637a6720696 Mon Sep 17 00:00:00 2001 From: bronsdonayden Date: Sun, 21 Jun 2026 14:08:34 -0400 Subject: [PATCH 1/2] Add PixelExplorer Boostlet and some additional changes to Niivue subvolume API --- dist/boostlet.min.js | 198 +++++++++++++++++++++++++++----------- dist/boostlet.min.js.map | 2 +- examples/PixelExplorer.js | 146 ++++++++++++++++++++++++++++ index.html | 4 +- src/boostlet.js | 8 ++ src/frameworks/niivue.js | 17 ++++ 6 files changed, 315 insertions(+), 60 deletions(-) create mode 100644 examples/PixelExplorer.js diff --git a/dist/boostlet.min.js b/dist/boostlet.min.js index 2b688a24..50050861 100644 --- a/dist/boostlet.min.js +++ b/dist/boostlet.min.js @@ -69,9 +69,9 @@ class Util { return framework; } static async load_script(url, callback) { - if (typeof window.Object.global === 'undefined') // introducing hack to make it work for openneuro + if (typeof window.Object.global === "undefined") // introducing hack to make it work for openneuro // but only do it once - window.Object.defineProperty(window.Object.prototype, 'global', { + window.Object.defineProperty(window.Object.prototype, "global", { get () { return window; }, @@ -100,10 +100,10 @@ class Util { } static convert_to_png(uint8array, width, height, flip) { // we are using an offscreen canvas for this - let offscreen = window.document.createElement('canvas'); + let offscreen = window.document.createElement("canvas"); offscreen.width = width; offscreen.height = height; - let offscreen_ctx = offscreen.getContext('2d'); + let offscreen_ctx = offscreen.getContext("2d"); let imgdata = offscreen_ctx.createImageData(offscreen.width, offscreen.height); let pxdata = imgdata.data; for(var i = 0; i < pxdata.length; i++)pxdata[i] = uint8array[i]; @@ -115,7 +115,7 @@ class Util { offscreen_ctx.drawImage(offscreen, 0, -height); offscreen_ctx.restore(); } - let base64 = offscreen.toDataURL('image/png'); + let base64 = offscreen.toDataURL("image/png"); // for debugging, download image // const link = window.document.createElement("a"); // link.href = base64; @@ -189,28 +189,28 @@ class Util { return pixels; } static is_defined(variable) { - return typeof variable != 'undefined'; + return typeof variable != "undefined"; } // "Boostlet Tooltips" - This is a hint mechanism that allows to display a message for a certain amount of time (ms). static hint(message, duration) { - let hint = window.document.createElement('div'); - hint.id = 'BoostletHint'; - hint.style.position = 'fixed'; - hint.style.left = '10px'; - hint.style.top = '10px'; - hint.style.padding = '10px'; - hint.style.background = '#fff'; - hint.style.color = '#000'; - hint.style.zIndex = '100000'; - hint.style.border = '1px solid #007ec6'; - hint.style.borderRadius = '5px'; - hint.style.boxShadow = '0px 0px 20px 5px rgba(0,0,0, 0.3)'; - hint.style.fontSize = '14px'; - hint.style.fontWeight = 'bold'; - hint.style.textAlign = 'center'; + let hint = window.document.createElement("div"); + hint.id = "BoostletHint"; + hint.style.position = "fixed"; + hint.style.left = "10px"; + hint.style.top = "10px"; + hint.style.padding = "10px"; + hint.style.background = "#fff"; + hint.style.color = "#000"; + hint.style.zIndex = "100000"; + hint.style.border = "1px solid #007ec6"; + hint.style.borderRadius = "5px"; + hint.style.boxShadow = "0px 0px 20px 5px rgba(0,0,0, 0.3)"; + hint.style.fontSize = "14px"; + hint.style.fontWeight = "bold"; + hint.style.textAlign = "center"; hint.innerHTML = message; window.document.body.appendChild(hint); - if (typeof duration === 'number' && duration > 0) setTimeout(function() { + if (typeof duration === "number" && duration > 0) setTimeout(function() { hint.remove(); }, duration); } @@ -224,7 +224,7 @@ $parcel$export(module.exports, "Framework", () => $0226f559a631e361$export$63888 var $gk9zP = parcelRequire("gk9zP"); class $0226f559a631e361$export$638889172ebce0c4 { constructor(instance){ - this.name = 'generic'; + this.name = "generic"; this.instance = instance; this.flip_on_png = false; } @@ -258,10 +258,10 @@ var $1lpSl = parcelRequire("1lpSl"); class $febea0d4681e2ae0$export$1ec7e9f19103cb25 extends (0, $bsgU1.Framework) { constructor(instance){ super(instance); - this.name = 'cornerstone2D'; + this.name = "cornerstone2D"; this.canvasFallback = new (0, $1lpSl.CanvasFallback)(); this.cornerstonetools_instance = null; - if (typeof window.cornerstoneTools != 'undefined') // TODO probably not too robust + if (typeof window.cornerstoneTools != "undefined") // TODO probably not too robust this.cornerstonetools_instance = window.cornerstoneTools; this.flip_on_png = false; } @@ -270,13 +270,13 @@ class $febea0d4681e2ae0$export$1ec7e9f19103cb25 extends (0, $bsgU1.Framework) { let pixels = null; let width = null; let height = null; - if (typeof from_canvas != 'undefined') { + if (typeof from_canvas != "undefined") { // TODO this is hacky going through the canvas // later should grab the real volume data let canvas = element.canvas; width = canvas.width; height = canvas.height; - let ctx = canvas.getContext('2d'); + let ctx = canvas.getContext("2d"); let imagedata = ctx.getImageData(0, 0, width, height); pixels = imagedata.data; } else { @@ -287,9 +287,9 @@ class $febea0d4681e2ae0$export$1ec7e9f19103cb25 extends (0, $bsgU1.Framework) { height = imagedata.height; } return { - 'data': pixels, - 'width': width, - 'height': height + "data": pixels, + "width": width, + "height": height }; } set_image(new_pixels) { @@ -353,7 +353,7 @@ class $0fabd2f4a96087f5$export$48eecc33595f906d extends (0, $bsgU1.Framework) { this.name = "canvasFallback"; } get_canvas() { - let canvases = document.querySelectorAll('canvas'); + let canvases = document.querySelectorAll("canvas"); let largestCanvas = canvases[0]; let largestArea = largestCanvas.width * largestCanvas.height; for(let i = 1; i < canvases.length; i++){ @@ -402,10 +402,10 @@ class $0fabd2f4a96087f5$export$48eecc33595f906d extends (0, $bsgU1.Framework) { set_mask(new_mask) { let image = this.get_image(true); let originalcanvas = this.get_canvas(); - let newcanvas = window.document.createElement('canvas'); + let newcanvas = window.document.createElement("canvas"); newcanvas.width = originalcanvas.width; newcanvas.height = originalcanvas.height; - let ctx = newcanvas.getContext('2d'); + let ctx = newcanvas.getContext("2d"); let imageclamped = new Uint8ClampedArray(image.data); let newImageData = new ImageData(imageclamped, newcanvas.width, newcanvas.height); // Draw the new image data onto the canvas @@ -449,7 +449,7 @@ var $1lpSl = parcelRequire("1lpSl"); class $fbafa14c3ac31938$export$3d6843c2c4a1bd6c extends (0, $bsgU1.Framework) { constructor(instance){ super(instance); - this.name = 'niivue'; + this.name = "niivue"; this.canvasFallback = new (0, $1lpSl.CanvasFallback)(); this.flip_on_png = true; this.onMouseDown = false; @@ -489,8 +489,9 @@ class $fbafa14c3ac31938$export$3d6843c2c4a1bd6c extends (0, $bsgU1.Framework) { // grab the real pixels of the current slice and return it // set width and height accordingly let v = this.instance.volumes[0]; - // TODO this gives us the FULL VOLUME - // but we want only the current Slice + let currentSlice = this.instance.opts.sliceType; + let currentCrossHairPos = this.instance.scene.crosshairPos; + // Default to full volume let start = [ 0, 0, @@ -501,21 +502,96 @@ class $fbafa14c3ac31938$export$3d6843c2c4a1bd6c extends (0, $bsgU1.Framework) { v.dims[2], v.dims[3] ]; - pixels = v.getVolumeData(start, end); - width = v.dims[1]; // TODO we need to figure out which view we are actually using or shall we work in 3D? - height = v.dims[2]; - // NOTE: THIS ONLY WORKS IN SOME CASES - // WE REALLY NEED TO DO THE FOLLOWING TO FIX - // 1. figure out which view is requested - // 2. update start and end based on that view - // 3. set width and height based on that view + if (currentSlice == 0) { + // axial — slice along Z + let z_index = Math.floor(currentCrossHairPos[2] * v.dims[3]); + width = v.dims[1]; + height = v.dims[2]; + start = [ + 0, + 0, + z_index + ]; + end = [ + v.dims[1], + v.dims[2], + z_index + 1 + ]; + } else if (currentSlice == 1) { + // coronal — slice along Y + let y_index = Math.floor(currentCrossHairPos[1] * v.dims[2]); + width = v.dims[1]; + height = v.dims[3]; + start = [ + 0, + y_index, + 0 + ]; + end = [ + v.dims[1], + y_index + 1, + v.dims[3] + ]; + } else if (currentSlice == 2) { + // sagittal — slice along X + let x_index = Math.floor(currentCrossHairPos[0] * v.dims[1]); + width = v.dims[2]; + height = v.dims[3]; + start = [ + x_index, + 0, + 0 + ]; + end = [ + x_index + 1, + v.dims[2], + v.dims[3] + ]; + } else { + // multiplanar (sliceType 3) — no single slice to extract, + // return the full volume + width = v.dims[1]; + height = v.dims[2]; + } + pixels = v.getVolumeData(start, end)[0]; } return { - 'data': pixels, - 'width': width, - 'height': height + "data": pixels, + "width": width, + "height": height }; } + get_subvolume(start, end) { + const [data, dims] = this.instance.volumes[0].getVolumeData(start, end); + return { + data: data, + dims: dims + }; + } + get_dims() { + const v = this.instance.volumes[0]; + const currentSlice = this.instance.opts.sliceType; + if (currentSlice == 0) return [ + v.dims[1], + v.dims[2], + 1 + ]; //axial + if (currentSlice == 1) return [ + v.dims[1], + v.dims[3], + 1 + ]; // coronal + if (currentSlice == 2) return [ + v.dims[2], + v.dims[3], + 1 + ]; // saggital + return [ + v.dims[1], + v.dims[2], + 1 + ]; // multiplanar fallback + } /** * Sets the NiiVue.js image. * @@ -527,11 +603,11 @@ class $fbafa14c3ac31938$export$3d6843c2c4a1bd6c extends (0, $bsgU1.Framework) { // show canvas // hide on click let originalcanvas = this.instance.canvas; - let newcanvas = window.document.createElement('canvas'); + let newcanvas = window.document.createElement("canvas"); newcanvas.width = originalcanvas.width; newcanvas.height = originalcanvas.height; // put new_pixels down - let ctx = newcanvas.getContext('2d'); + let ctx = newcanvas.getContext("2d"); let new_pixels_rgba = null; if ((0, $gk9zP.Util).is_defined(is_rgba)) new_pixels_rgba = new_pixels; else new_pixels_rgba = (0, $gk9zP.Util).grayscale_to_rgba(new_pixels); @@ -551,8 +627,8 @@ class $fbafa14c3ac31938$export$3d6843c2c4a1bd6c extends (0, $bsgU1.Framework) { }; // replace nv canvas with new one // originalcanvas.parentNode.replaceChild(newcanvas, originalcanvas); - newcanvas.style.width = originalcanvas.clientWidth + 'px'; - newcanvas.style.height = originalcanvas.clientHeight + 'px'; + newcanvas.style.width = originalcanvas.clientWidth + "px"; + newcanvas.style.height = originalcanvas.clientHeight + "px"; originalcanvas.parentNode.replaceChild(newcanvas, originalcanvas); } set_mask(new_mask) { @@ -563,11 +639,11 @@ class $fbafa14c3ac31938$export$3d6843c2c4a1bd6c extends (0, $bsgU1.Framework) { // we use the official niivue infrastructure for adding // a segmentation layer let originalcanvas = this.instance.canvas; - let newcanvas = window.document.createElement('canvas'); + let newcanvas = window.document.createElement("canvas"); newcanvas.width = originalcanvas.width; newcanvas.height = originalcanvas.height; // put new_pixels down - let ctx = newcanvas.getContext('2d'); + let ctx = newcanvas.getContext("2d"); let imageclamped = new Uint8ClampedArray(image.data); let imagedata = new ImageData(imageclamped, image.width, image.height); ctx.putImageData(imagedata, 0, 0); @@ -599,7 +675,7 @@ var $1lpSl = parcelRequire("1lpSl"); class $5bc2ced335fcdbf6$export$ac966f05fb2ad3 extends (0, $bsgU1.Framework) { constructor(instance){ super(instance); - this.name = 'opensedragon'; + this.name = "opensedragon"; this.canvasFallback = new (0, $1lpSl.CanvasFallback)(); } get_image(from_canvas) { @@ -721,12 +797,12 @@ class $c41144187e031f80$export$a1c8e230980baa0 { * is not detected. * */ init(name, instance) { - if (typeof name != 'undefined' && typeof instance != 'undefined') { - console.log('Framework forced by user!'); + if (typeof name != "undefined" && typeof instance != "undefined") { + console.log("Framework forced by user!"); throw "Forced Framework Not Implemented."; // TODO } else this.framework = (0, $gk9zP.Util).detect_framework(); - if (this.framework) console.log('Found', this.framework, '!'); + if (this.framework) console.log("Found", this.framework, "!"); else throw "Framework Not Found."; } /** @@ -769,6 +845,12 @@ class $c41144187e031f80$export$a1c8e230980baa0 { */ set_mask(new_mask) { return this.framework.set_mask(new_mask); } + get_dims() { + return this.framework.get_dims(); + } + get_subvolume(start, end) { + return this.framework.get_subvolume(start, end); + } /** * Encode raw image data to PNG. */ convert_to_png(uint8array, width, height) { @@ -786,7 +868,7 @@ class $c41144187e031f80$export$a1c8e230980baa0 { } -window.console.log('BOOSTLET VERSION 0.1-beta'); +window.console.log("BOOSTLET VERSION 0.1-beta"); // register global namespace with a new boostlet instance // later we might want to support multiple active boostlets window.Boostlet = new (0, $c41144187e031f80$export$a1c8e230980baa0)(); diff --git a/dist/boostlet.min.js.map b/dist/boostlet.min.js.map index c3090dd4..0db105ec 100644 --- a/dist/boostlet.min.js.map +++ b/dist/boostlet.min.js.map @@ -1 +1 @@ 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{Framework} from './framework.js';\nimport {Cornerstone2D} from './frameworks/cornerstone2d.js';\nimport {NiiVue} from './frameworks/niivue.js';\nimport { OpenSeaDragon } from './frameworks/openseadragon.js';\nimport { Xtk } from './frameworks/xtk.js';\nimport { Papaya } from './frameworks/papaya.js';\nimport { CanvasFallback } from './frameworks/canvasFallback.js';\n\nexport class Util {\n \n static detect_framework() {\n\n let framework = null;\n\n if (Util.is_defined(window.nv)) {\n \n framework = new NiiVue(window.nv);\n \n } else if (Util.is_defined(window.niivue)) {\n \n framework = new NiiVue(window.niivue);\n\n } else if (Util.is_defined(window.cornerstone)) {\n\n framework = new Cornerstone2D(window.cornerstone);\n\n } else if (Util.is_defined(window.r)) {\n \n framework = new Xtk(window.r);\n \n } else if (Util.is_defined(window.OpenSeadragon)) {\n\n framework = new OpenSeaDragon(window.OpenSeadragon);\n \n } else if (Util.is_defined(window.papayaContainers)) {\n \n framework = new Papaya(window.papayaContainers)\n\n } else {\n // Canvas fallback\n \n console.log(\"No framework detected, falling back to canvas rendering\");\n framework = new CanvasFallback();\n \n }\n\n return framework;\n\n }\n\n static async load_script(url, callback) {\n\n if (typeof window.Object.global === 'undefined') {\n // introducing hack to make it work for openneuro\n // but only do it once\n window.Object.defineProperty(window.Object.prototype, 'global', {\n get( ){\n return window;\n },\n set(newGlobal) {\n globalThis = newGlobal;\n }\n });\n }\n\n const script = window.document.createElement(\"script\")\n script.type = \"text/javascript\"\n script.src = url;\n\n if (Util.is_defined(callback)) {\n script.onload = callback;\n }\n\n window.document.head.appendChild(script);\n eval(script);\n\n }\n\n static async send_http_post(url, data, callback) {\n\n let xhr = new XMLHttpRequest();\n xhr.open(\"POST\", url);\n xhr.onreadystatechange = function () {\n if (xhr.readyState === 4) {\n // request done\n callback( xhr.response );\n\n return;\n\n }\n }\n\n xhr.send(data)\n\n }\n\n static convert_to_png(uint8array, width, height, flip) {\n\n // we are using an offscreen canvas for this\n let offscreen = window.document.createElement('canvas');\n offscreen.width = width;\n offscreen.height = height;\n\n let offscreen_ctx = offscreen.getContext('2d');\n\n let imgdata = offscreen_ctx.createImageData(offscreen.width, offscreen.height);\n let pxdata = imgdata.data;\n\n for (var i =0; i c.charCodeAt(0));\n\n return pngpixels;\n\n }\n\n static filter(pixels, width, height, kernel) {\n\n const kernelSize = Math.sqrt(kernel.length);\n const halfKernelSize = Math.floor(kernelSize / 2);\n\n const new_pixels = pixels.slice();\n\n for (let y = 0; y < height; y++) {\n for (let x = 0; x < width; x++) {\n const dstIndex = y * width + x;\n\n let newValue = 0;\n for (let ky = 0; ky < kernelSize; ky++) {\n for (let kx = 0; kx < kernelSize; kx++) {\n const srcX = x + kx - halfKernelSize;\n const srcY = y + ky - halfKernelSize;\n const srcIndex = srcY * width + srcX;\n\n const kernelValue = kernel[ky * kernelSize + kx];\n newValue += pixels[srcIndex] * kernelValue;\n }\n }\n\n new_pixels[dstIndex] = newValue;\n\n }\n }\n\n return new_pixels;\n\n }\n\n static grayscale_to_rgba(grayscale) {\n\n const rgba = new Uint8Array(grayscale.length * 4);\n\n for (let i = 0; i < grayscale.length; i++) {\n const g = grayscale[i];\n const index = i * 4;\n\n rgba[index] = g;\n rgba[index + 1] = g;\n rgba[index + 2] = g;\n rgba[index + 3] = 255; \n }\n\n return rgba;\n\n }\n\n static rgba_to_grayscale(rgba) {\n\n const grayscale = new Uint8Array(rgba.length / 4);\n\n for (let i = 0; i < rgba.length; i += 4) {\n\n grayscale[i / 4] = rgba[i];\n\n }\n\n return grayscale;\n\n }\n\n /**\n * Harden a mask into a grayscale pixel array.\n * \n * pixels needs to be RGBA\n * \n * and mask binary.\n * \n * maskcolor is optional and falls back to blue.\n * \n **/\n static harden_mask(pixels, mask, maskcolor) {\n\n // Modified from: https://github.com/facebookresearch/segment-anything/blob/40df6e4046d8b07ab8c4519e083408289eb43032/demo/src/components/helpers/maskUtils.tsx\n // Copyright (c) Meta Platforms, Inc. and affiliates.\n // All rights reserved.\n\n\n let maskcolor_ = [0, 114, 189, 255];\n\n if (Util.is_defined(maskcolor)) {\n \n maskcolor_ = maskcolor;\n \n } \n\n for (var i = 0; i < mask.length; i++) {\n\n if (mask[i] > 0.0) {\n pixels[4 * i + 0] = maskcolor_[0];\n pixels[4 * i + 1] = maskcolor_[1];\n pixels[4 * i + 2] = maskcolor_[2];\n pixels[4 * i + 3] = maskcolor_[3];\n }\n\n }\n\n return pixels;\n\n }\n\n static is_defined(variable) {\n\n return (typeof variable != 'undefined');\n\n }\n \n // \"Boostlet Tooltips\" - This is a hint mechanism that allows to display a message for a certain amount of time (ms).\n static hint(message, duration) {\n\n let hint = window.document.createElement('div');\n hint.id = 'BoostletHint';\n\n hint.style.position = 'fixed';\n hint.style.left = '10px';\n hint.style.top = '10px';\n hint.style.padding = '10px';\n hint.style.background = '#fff';\n hint.style.color = '#000';\n hint.style.zIndex = '100000';\n hint.style.border = '1px solid #007ec6';\n hint.style.borderRadius = '5px';\n hint.style.boxShadow = '0px 0px 20px 5px rgba(0,0,0, 0.3)';\n hint.style.fontSize = '14px';\n hint.style.fontWeight = 'bold';\n hint.style.textAlign = 'center';\n\n hint.innerHTML = message;\n \n window.document.body.appendChild(hint);\n\n if (typeof duration === 'number' && duration > 0) {\n setTimeout(function() {\n hint.remove();\n }, duration);\n }\n\n }\n\n}","import {Util} from './util.js';\n\nexport class Framework {\n\n constructor(instance) {\n\n this.name = 'generic';\n this.instance = instance;\n\n this.flip_on_png = false;\n\n }\n\n get_image(from_canvas) {\n\n throw \"Missing Implementation.\";\n\n }\n\n set_image(new_pixels) {\n\n throw \"Missing Implementation.\";\n\n }\n\n set_mask(new_mask) {\n\n throw \"Missing Implementation.\";\n \n }\n\n select_box(callback) {\n\n throw \"Missing Implementation.\";\n\n }\n\n convert_to_png(uint8array, width, height) {\n\n return Util.convert_to_png(uint8array, width, height, this.flip_on_png);\n\n }\n\n}\n","import {Framework} from '../framework.js';\n\nimport {Util} from '../util.js';\n\nimport {CanvasFallback} from './canvasFallback.js';\n\nexport class Cornerstone2D extends Framework {\n \n constructor(instance) {\n\n super(instance);\n this.name = 'cornerstone2D';\n this.canvasFallback = new CanvasFallback();\n\n this.cornerstonetools_instance = null;\n\n if (typeof window.cornerstoneTools != 'undefined') {\n\n // TODO probably not too robust\n this.cornerstonetools_instance = window.cornerstoneTools;\n\n }\n\n this.flip_on_png = false;\n\n }\n\n get_image(from_canvas) {\n\n let element = this.instance.getEnabledElements()[0];\n let pixels = null;\n let width = null;\n let height = null;\n\n if (typeof from_canvas != 'undefined') {\n\n // TODO this is hacky going through the canvas\n // later should grab the real volume data\n\n let canvas = element.canvas;\n width = canvas.width;\n height = canvas.height;\n\n let ctx = canvas.getContext('2d');\n\n let imagedata = ctx.getImageData(0, 0, width, height);\n pixels = imagedata.data;\n\n } else {\n\n // this is the real image slice data\n let imagedata = element.image;\n pixels = imagedata.getPixelData();\n width = imagedata.width;\n height = imagedata.height;\n\n }\n\n return {'data':pixels, 'width':width, 'height':height};\n\n }\n\n set_image(new_pixels) {\n\n let element = this.instance.getEnabledElements()[0];\n let pixels = element.image.getPixelData();\n\n // Set the new pixel values\n pixels.set(new_pixels);\n\n // Re-render the current slice\n cornerstone.renderGrayscaleImage(element, true);\n\n }\n\n set_mask(new_mask) {\n return this.canvasFallback.set_mask(new_mask);\n \n }\n\n select_box(callback) {\n\n if(this.cornerstonetools_instance.RectangleRoiTool === undefined) {\n console.log(\"Using Boxcraft library to handle box selection.\");\n let element = this.instance.getEnabledElements()[0];\n let canvas = element.canvas;\n\n // Disable the Wwwc tool\n cornerstoneTools.setToolDisabled(\"Wwwc\");\n\n BoxCraft.createDraggableBBox(canvas, function (topleft, bottomright) {\n callback(topleft, bottomright);\n });\n\n BoxCraft.createResizableBBox(canvas, function(topleft, bottomright) {\n console.log(\"Inside Draggable BBox\",topleft, bottomright);\n callback(topleft, bottomright);\n });\n\n // return this.canvasFallback.select_box(callback);\n\n\n }\n else{\n console.log(\"Using Cornerstonetools to handle box selection.\");\n this.cornerstonetools_instance.setToolActive(\"RectangleRoi\", {\n mouseButtonMask: 1,\n });\n\n let element = this.instance.getEnabledElements()[0];\n let canvas = element.canvas;\n\n canvas.onmouseup = function () {\n let state =\n this.cornerstonetools_instance.globalImageIdSpecificToolStateManager.saveToolState();\n\n let topleft =\n state[Object.keys(state).pop()].RectangleRoi.data[0].handles.start;\n let bottomright =\n state[Object.keys(state).pop()].RectangleRoi.data[0].handles.end;\n\n let topleft_c = this.instance.pixelToCanvas(element.element, topleft);\n let bottomright_c = this.instance.pixelToCanvas(\n element.element,\n bottomright\n );\n\n this.cornerstonetools_instance.clearToolState(\n element.element,\n \"RectangleRoi\"\n );\n this.instance.renderGrayscaleImage(element, true);\n callback(topleft_c, bottomright_c);\n }.bind(this);\n }\n\n }\n\n}","import { Framework } from \"../framework.js\";\n\nimport { Util } from \"../util.js\";\n\n\n\nexport class CanvasFallback extends Framework {\n constructor() {\n super();\n this.name = \"canvasFallback\";\n }\n\n get_canvas() {\n let canvases = document.querySelectorAll('canvas');\n let largestCanvas = canvases[0];\n let largestArea = largestCanvas.width * largestCanvas.height;\n\n for (let i = 1; i < canvases.length; i++) {\n let area = canvases[i].width * canvases[i].height;\n if (area > largestArea) {\n largestCanvas = canvases[i];\n largestArea = area;\n }\n }\n\n return largestCanvas;\n }\n\n get_image(from_canvas) {\n\n let canvas = this.get_canvas();\n\n let ctx = canvas.getContext(\"2d\");\n\n let image = ctx.getImageData(0, 0, canvas.width, canvas.height);\n let rgba_image = Util.rgba_to_grayscale(image.data);\n\n if (from_canvas) {\n return { data: image.data, width: image.width, height: image.height };\n } else {\n return { data: rgba_image, width: image.width, height: image.height };\n }\n }\n\n set_image(new_pixels) {\n let originalcanvas = this.get_canvas();\n\n let newcanvas = window.document.createElement(\"canvas\");\n\n newcanvas.width = originalcanvas.width;\n newcanvas.height = originalcanvas.height;\n\n let ctx = newcanvas.getContext(\"2d\");\n\n let newPixelsRgba = Util.grayscale_to_rgba(new_pixels);\n\n let newPixelsClamped = new Uint8ClampedArray(newPixelsRgba);\n\n let newImageData = new ImageData(\n newPixelsClamped,\n newcanvas.width,\n newcanvas.height\n );\n\n // Draw the new image data onto the canvas\n ctx.putImageData(newImageData, 0, 0);\n\n newcanvas.onclick = function () {\n // on click, we will restore the nv canvas\n newcanvas.parentNode.replaceChild(originalcanvas, newcanvas);\n };\n\n // replace nv canvas with new one\n originalcanvas.parentNode.replaceChild(newcanvas, originalcanvas);\n }\n\n set_mask(new_mask) {\n let image = this.get_image(true);\n\n let originalcanvas = this.get_canvas();\n\n let newcanvas = window.document.createElement('canvas');\n\n newcanvas.width = originalcanvas.width;\n newcanvas.height = originalcanvas.height;\n\n let ctx = newcanvas.getContext('2d');\n\n let imageclamped = new Uint8ClampedArray(image.data);\n\n let newImageData = new ImageData(\n imageclamped,\n newcanvas.width,\n newcanvas.height\n );\n\n // Draw the new image data onto the canvas\n ctx.putImageData(newImageData, 0, 0);\n\n image = ctx.getImageData(0, 0, newcanvas.width, newcanvas.height);\n\n let masked_image = Util.harden_mask(image.data, new_mask);\n\n let masked_image_as_imagedata = new ImageData(\n masked_image,\n newcanvas.width,\n newcanvas.height\n );\n\n ctx.putImageData(masked_image_as_imagedata, 0, 0);\n\n originalcanvas.parentNode.replaceChild(newcanvas, originalcanvas);\n }\n\n select_box(callback) {\n let scriptBoxCraft = document.createElement(\"script\");\n scriptBoxCraft.type = \"text/javascript\";\n scriptBoxCraft.src = \"https://boostlet.org/dist/boxcraft.min.js\";\n // scriptBoxCraft.src = \"https://shrutivarade.github.io/BoxCraft/dist/boxCraft.min.js\";\n // scriptBoxCraft.src = \"https://shrutivarade.github.io/boostlet/dist/boxcraft.min.js\";\n // scriptBoxCraft.src = \"http://localhost:8000/dist/boxcraft.min.js\";\n let canvas = this.get_canvas();\n document.head.appendChild(scriptBoxCraft);\n\n scriptBoxCraft.onload = function() {\n\n BoxCraft.createDraggableBBox(canvas, function (topleft, bottomright) {\n console.log(\"Inside Draggable BBox\", topleft, bottomright);\n callback(topleft, bottomright);\n });\n }\n\n }\n\n}\n","import {Framework} from '../framework.js';\n\nimport {Util} from '../util.js';\nimport {CanvasFallback} from './canvasFallback.js';\n\nexport class NiiVue extends Framework {\n \n constructor(instance) {\n\n super(instance);\n this.name = 'niivue';\n this.canvasFallback = new CanvasFallback();\n\n this.flip_on_png = true;\n\n this.onMouseDown = false;\n this.x1 = null;\n this.y1 = null;\n this.x2 = null;\n this.y2 = null;\n\n }\n\n get_image(from_canvas) {\n\n \n let pixels = null;\n let width = null;\n let height = null;\n\n if (!Util.is_defined(from_canvas)) {\n\n // use the canvas\n\n let element = this.instance.canvas;\n\n let old_crosshaircolor = this.instance.opts.crosshairColor;\n let old_crosshairwidth = this.instance.opts.crosshairWidth;\n\n this.instance.setCrosshairColor([0,0,0,0]);\n this.instance.opts.crosshairWidth=0;\n this.instance.updateGLVolume();\n\n\n let ctx = this.instance.gl;\n\n \n width = ctx.drawingBufferWidth;\n height = ctx.drawingBufferHeight;\n\n pixels = new Uint8Array(width * height * 4);\n ctx.readPixels(\n 0, \n 0, \n width, \n height, \n ctx.RGBA, \n ctx.UNSIGNED_BYTE, \n pixels);\n\n // restore crosshairs\n this.instance.setCrosshairColor(old_crosshaircolor);\n this.instance.opts.crosshairWidth = old_crosshairwidth;\n\n\n // convert rgba pixels to grayscale\n pixels = Util.rgba_to_grayscale(pixels);\n\n\n } else {\n\n // grab the real pixels of the current slice and return it\n // set width and height accordingly\n\n let v = this.instance.volumes[0];\n\n // TODO this gives us the FULL VOLUME\n // but we want only the current Slice\n let start = [0,0,0];\n let end = [v.dims[1], v.dims[2], v.dims[3]];\n\n pixels = v.getVolumeData(start, end);\n width = v.dims[1]; // TODO we need to figure out which view we are actually using or shall we work in 3D?\n height = v.dims[2]; \n\n // NOTE: THIS ONLY WORKS IN SOME CASES\n // WE REALLY NEED TO DO THE FOLLOWING TO FIX\n // 1. figure out which view is requested\n // 2. update start and end based on that view\n // 3. set width and height based on that view\n\n }\n\n\n return {'data':pixels, 'width':width, 'height':height};\n\n }\n\n /**\n * Sets the NiiVue.js image.\n * \n * If is_rgba==true, we do *not* convert to RGBA before setting on canvas.\n **/\n set_image(new_pixels, is_rgba, no_flip) {\n\n // TODO this is hacky since we dont work with the real volume yet\n // create new canvas\n // put pixels on canvas\n // show canvas\n // hide on click\n\n let originalcanvas = this.instance.canvas;\n\n let newcanvas = window.document.createElement('canvas');\n newcanvas.width = originalcanvas.width;\n newcanvas.height = originalcanvas.height;\n\n // put new_pixels down\n let ctx = newcanvas.getContext('2d');\n\n let new_pixels_rgba = null;\n\n if (Util.is_defined(is_rgba)) {\n\n new_pixels_rgba = new_pixels;\n\n } else {\n\n new_pixels_rgba = Util.grayscale_to_rgba(new_pixels);\n\n\n }\n\n let new_pixels_clamped = new Uint8ClampedArray(new_pixels_rgba);\n\n let new_image_data = new ImageData(new_pixels_clamped, newcanvas.width, newcanvas.height);\n \n\n ctx.putImageData(new_image_data, 0, 0);\n\n if (!Util.is_defined(no_flip)) {\n // some flipping action\n ctx.save();\n ctx.scale(1, -1);\n ctx.drawImage(newcanvas, 0, -newcanvas.height);\n ctx.restore();\n }\n\n\n newcanvas.onclick = function() {\n\n // on click, we will restore the nv canvas\n newcanvas.parentNode.replaceChild(originalcanvas, newcanvas);\n\n }\n\n // replace nv canvas with new one\n // originalcanvas.parentNode.replaceChild(newcanvas, originalcanvas);\n newcanvas.style.width = originalcanvas.clientWidth+'px';\n newcanvas.style.height = originalcanvas.clientHeight+'px';\n originalcanvas.parentNode.replaceChild(newcanvas, originalcanvas);\n\n }\n\n set_mask(new_mask) {\n\n // merge image + mask\n // and then call set_image with that information\n\n let image = this.get_image(true);\n\n // TODO here we need to flip one more time, this is until\n // we use the official niivue infrastructure for adding\n // a segmentation layer\n let originalcanvas = this.instance.canvas;\n\n let newcanvas = window.document.createElement('canvas');\n newcanvas.width = originalcanvas.width;\n newcanvas.height = originalcanvas.height;\n // put new_pixels down\n let ctx = newcanvas.getContext('2d');\n let imageclamped = new Uint8ClampedArray(image.data);\n let imagedata = new ImageData(imageclamped, image.width, image.height);\n ctx.putImageData(imagedata, 0, 0);\n ctx.save();\n ctx.scale(1, -1);\n ctx.drawImage(newcanvas, 0, -newcanvas.height);\n ctx.restore();\n image = ctx.getImageData(0, 0, newcanvas.width, newcanvas.height);\n // end of flip\n\n let masked_image = Util.harden_mask(image.data, new_mask);\n\n this.set_image(masked_image, true, true); // rgba data, no flip\n\n\n }\n\n select_box(callback) {\n return this.canvasFallback.select_box(callback);\n\n }\n\n}\n","import {Framework} from '../framework.js';\n\nimport {Util} from '../util.js';\n\nimport {CanvasFallback} from './canvasFallback.js';\n\nexport class OpenSeaDragon extends Framework {\n constructor(instance) {\n super(instance);\n this.name = 'opensedragon';\n this.canvasFallback = new CanvasFallback();\n\n }\n\n get_image(from_canvas) {\n return this.canvasFallback.get_image(from_canvas);\n }\n\n set_image(new_pixels) {\n return this.canvasFallback.set_image(new_pixels);\n }\n\n set_mask(new_mask) {\n // return this.canvasFallback.set_mask(new_mask);\n\n let viewer = null;\n let vs = this.instance._viewers;\n vs.forEach(function (e) {\n if (e.id == \"viewer\") {\n viewer = e;\n }\n });\n\n if (!viewer) {\n throw \"OpenSeaDragon viewer not found.\";\n }\n\n let canvas = viewer.canvas.children[0];\n width = canvas.width;\n height = canvas.height;\n\n let ctx = canvas.getContext(\"2d\");\n let imagedata = ctx.getImageData(0, 0, width, height);\n let pixels = imagedata.data;\n\n let masked_image = Util.harden_mask(pixels, new_mask);\n let masked_image_as_imagedata = new ImageData(masked_image, width, height);\n ctx.putImageData(masked_image_as_imagedata, 0, 0);\n }\n\n select_box(callback) {\n\n console.log(\"Using Boxcraft library to handle box selection.\");\n let viewer = null;\n let vs = this.instance._viewers;\n vs.forEach(function (e) {\n if (e.id == \"viewer\") {\n viewer = e;\n }\n });\n\n if (!viewer) {\n throw \"OpenSeaDragon viewer not found.\";\n }\n\n let canvas = viewer.canvas;\n\n BoxCraft.createDraggableBBox(canvas, function (topleft, bottomright) {\n callback(topleft, bottomright);\n });\n\n }\n\n \n\n}\n \n","import { Framework } from \"../framework.js\";\n\nimport { Util } from \"../util.js\";\n\nimport { CanvasFallback } from \"./canvasFallback.js\";\n\nexport class Xtk extends Framework {\n constructor(instance) {\n super(instance);\n this.name = \"xtk\";\n this.canvasFallback = new CanvasFallback();\n }\n\n get_image(from_canvas) {\n return this.canvasFallback.get_image(from_canvas);\n }\n\n set_image(new_pixels) {\n return this.canvasFallback.set_image(new_pixels);\n }\n\n set_mask(new_mask) {\n return this.canvasFallback.set_mask(new_mask);\n }\n\n select_box(callback) {\n return this.canvasFallback.select_box(callback);\n }\n}\n","import { Framework } from \"../framework.js\";\n\nimport { Util } from \"../util.js\";\n\nimport { CanvasFallback } from \"./canvasFallback.js\";\n\nexport class Papaya extends Framework {\n constructor(instance) {\n super(instance);\n this.name = \"papaya\";\n this.canvasFallback = new CanvasFallback();\n }\n\n get_image(from_canvas) {\n return this.canvasFallback.get_image(from_canvas);\n }\n\n set_image(new_pixels) {\n return this.canvasFallback.set_image(new_pixels);\n }\n\n set_mask(new_mask) {\n return this.canvasFallback.set_mask(new_mask);\n }\n\n select_box(callback) {\n return this.canvasFallback.select_box(callback);\n }\n}\n","\nimport {Boostlet} from \"./boostlet.js\"\n\nwindow.console.log('BOOSTLET VERSION 0.1-beta');\n\n// register global namespace with a new boostlet instance\n// later we might want to support multiple active boostlets\nwindow.Boostlet = new Boostlet();\n","import {Util} from './util.js';\n\nimport {Framework} from './framework.js';\n\nexport class Boostlet {\n\n constructor() {\n this.framework = null;\n }\n\n /**\n * Initializes the Boostlet.\n * \n * This includes several steps such as identifying the \n * visualization/rendering framework that is available. \n * \n * TODO: Later we want to have fallbacks in place if the framework\n * is not detected.\n * \n */\n init(name, instance) {\n\n if (typeof name != 'undefined' && typeof instance != 'undefined') {\n\n console.log('Framework forced by user!');\n throw \"Forced Framework Not Implemented.\";\n // TODO\n\n } else {\n\n this.framework = Util.detect_framework();\n\n }\n\n if (this.framework) {\n\n console.log('Found', this.framework, '!')\n \n } else {\n\n throw \"Framework Not Found.\";\n\n }\n\n }\n\n /**\n * Let's the user select a region of interest box.\n */\n async select_box(callback) {\n\n this.framework.select_box(callback);\n\n }\n\n /**\n * Let's the user select (multiple) seeds.\n */\n async select_seed(howmany) {\n\n throw \"Missing Implementation.\";\n\n }\n\n /**\n * Loads an external javascript file asynchronously. \n */\n async load_script(url, callback) {\n\n Util.load_script(url, callback);\n\n }\n\n /**\n * Sends a HTTP POST request to a url with some data.\n */\n async send_http_post(url, data, callback) {\n\n Util.send_http_post(url, data, callback);\n\n }\n\n /**\n * Gets the current image (2D).\n * \n * TODO: Optional bounding box should be supported.\n * \n */\n get_image(from_canvas) {\n\n return this.framework.get_image(from_canvas);\n\n }\n\n /**\n * Sets the current image (2D).\n * \n */\n set_image(new_pixels) {\n\n return this.framework.set_image(new_pixels);\n\n }\n\n /**\n * Sets the current mask (2D).\n * \n */\n set_mask(new_mask) {\n\n return this.framework.set_mask(new_mask);\n\n }\n\n /**\n * Encode raw image data to PNG.\n */\n convert_to_png(uint8array, width, height) {\n\n return this.framework.convert_to_png(uint8array, width, height);\n\n }\n\n filter(pixels, width, height, kernel) {\n\n return Util.filter(pixels, width, height, kernel);\n\n }\n\n /**\n * Displays a small div located at the top left corner of the screen with message and will disappear after the specified time (ms).\n * \n */\n hint(message, duration) {\n\n return Util.hint(message, duration);\n\n }\n\n}\n"],"names":[],"version":3,"file":"boostlet.min.js.map"} \ No newline at end of file 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{Framework} from './framework.js';\r\nimport {Cornerstone2D} from './frameworks/cornerstone2d.js';\r\nimport {NiiVue} from './frameworks/niivue.js';\r\nimport { OpenSeaDragon } from './frameworks/openseadragon.js';\r\nimport { Xtk } from './frameworks/xtk.js';\r\nimport { Papaya } from './frameworks/papaya.js';\r\nimport { CanvasFallback } from './frameworks/canvasFallback.js';\r\n\r\nexport class Util {\r\n \r\n static detect_framework() {\r\n\r\n let framework = null;\r\n\r\n if (Util.is_defined(window.nv)) {\r\n \r\n framework = new NiiVue(window.nv);\r\n \r\n } else if (Util.is_defined(window.niivue)) {\r\n \r\n framework = new NiiVue(window.niivue);\r\n\r\n } else if (Util.is_defined(window.cornerstone)) {\r\n\r\n framework = new Cornerstone2D(window.cornerstone);\r\n\r\n } else if (Util.is_defined(window.r)) {\r\n \r\n framework = new Xtk(window.r);\r\n \r\n } else if (Util.is_defined(window.OpenSeadragon)) {\r\n\r\n framework = new OpenSeaDragon(window.OpenSeadragon);\r\n \r\n } else if (Util.is_defined(window.papayaContainers)) {\r\n \r\n framework = new Papaya(window.papayaContainers)\r\n\r\n } else {\r\n // Canvas fallback\r\n \r\n console.log(\"No framework detected, falling back to canvas rendering\");\r\n framework = new CanvasFallback();\r\n \r\n }\r\n\r\n return framework;\r\n\r\n }\r\n\r\n static async load_script(url, callback) {\r\n\r\n if (typeof window.Object.global === 'undefined') {\r\n // introducing hack to make it work for openneuro\r\n // but only do it once\r\n window.Object.defineProperty(window.Object.prototype, 'global', {\r\n get( ){\r\n return window;\r\n },\r\n set(newGlobal) {\r\n globalThis = newGlobal;\r\n }\r\n });\r\n }\r\n\r\n const script = window.document.createElement(\"script\")\r\n script.type = \"text/javascript\"\r\n script.src = url;\r\n\r\n if (Util.is_defined(callback)) {\r\n script.onload = callback;\r\n }\r\n\r\n window.document.head.appendChild(script);\r\n eval(script);\r\n\r\n }\r\n\r\n static async send_http_post(url, data, callback) {\r\n\r\n let xhr = new XMLHttpRequest();\r\n xhr.open(\"POST\", url);\r\n xhr.onreadystatechange = function () {\r\n if (xhr.readyState === 4) {\r\n // request done\r\n callback( xhr.response );\r\n\r\n return;\r\n\r\n }\r\n }\r\n\r\n xhr.send(data)\r\n\r\n }\r\n\r\n static convert_to_png(uint8array, width, height, flip) {\r\n\r\n // we are using an offscreen canvas for this\r\n let offscreen = window.document.createElement('canvas');\r\n offscreen.width = width;\r\n offscreen.height = height;\r\n\r\n let offscreen_ctx = offscreen.getContext('2d');\r\n\r\n let imgdata = offscreen_ctx.createImageData(offscreen.width, offscreen.height);\r\n let pxdata = imgdata.data;\r\n\r\n for (var i =0; i c.charCodeAt(0));\r\n\r\n return pngpixels;\r\n\r\n }\r\n\r\n static filter(pixels, width, height, kernel) {\r\n\r\n const kernelSize = Math.sqrt(kernel.length);\r\n const halfKernelSize = Math.floor(kernelSize / 2);\r\n\r\n const new_pixels = pixels.slice();\r\n\r\n for (let y = 0; y < height; y++) {\r\n for (let x = 0; x < width; x++) {\r\n const dstIndex = y * width + x;\r\n\r\n let newValue = 0;\r\n for (let ky = 0; ky < kernelSize; ky++) {\r\n for (let kx = 0; kx < kernelSize; kx++) {\r\n const srcX = x + kx - halfKernelSize;\r\n const srcY = y + ky - halfKernelSize;\r\n const srcIndex = srcY * width + srcX;\r\n\r\n const kernelValue = kernel[ky * kernelSize + kx];\r\n newValue += pixels[srcIndex] * kernelValue;\r\n }\r\n }\r\n\r\n new_pixels[dstIndex] = newValue;\r\n\r\n }\r\n }\r\n\r\n return new_pixels;\r\n\r\n }\r\n\r\n static grayscale_to_rgba(grayscale) {\r\n\r\n const rgba = new Uint8Array(grayscale.length * 4);\r\n\r\n for (let i = 0; i < grayscale.length; i++) {\r\n const g = grayscale[i];\r\n const index = i * 4;\r\n\r\n rgba[index] = g;\r\n rgba[index + 1] = g;\r\n rgba[index + 2] = g;\r\n rgba[index + 3] = 255; \r\n }\r\n\r\n return rgba;\r\n\r\n }\r\n\r\n static rgba_to_grayscale(rgba) {\r\n\r\n const grayscale = new Uint8Array(rgba.length / 4);\r\n\r\n for (let i = 0; i < rgba.length; i += 4) {\r\n\r\n grayscale[i / 4] = rgba[i];\r\n\r\n }\r\n\r\n return grayscale;\r\n\r\n }\r\n\r\n /**\r\n * Harden a mask into a grayscale pixel array.\r\n * \r\n * pixels needs to be RGBA\r\n * \r\n * and mask binary.\r\n * \r\n * maskcolor is optional and falls back to blue.\r\n * \r\n **/\r\n static harden_mask(pixels, mask, maskcolor) {\r\n\r\n // Modified from: https://github.com/facebookresearch/segment-anything/blob/40df6e4046d8b07ab8c4519e083408289eb43032/demo/src/components/helpers/maskUtils.tsx\r\n // Copyright (c) Meta Platforms, Inc. and affiliates.\r\n // All rights reserved.\r\n\r\n\r\n let maskcolor_ = [0, 114, 189, 255];\r\n\r\n if (Util.is_defined(maskcolor)) {\r\n \r\n maskcolor_ = maskcolor;\r\n \r\n } \r\n\r\n for (var i = 0; i < mask.length; i++) {\r\n\r\n if (mask[i] > 0.0) {\r\n pixels[4 * i + 0] = maskcolor_[0];\r\n pixels[4 * i + 1] = maskcolor_[1];\r\n pixels[4 * i + 2] = maskcolor_[2];\r\n pixels[4 * i + 3] = maskcolor_[3];\r\n }\r\n\r\n }\r\n\r\n return pixels;\r\n\r\n }\r\n\r\n static is_defined(variable) {\r\n\r\n return (typeof variable != 'undefined');\r\n\r\n }\r\n \r\n // \"Boostlet Tooltips\" - This is a hint mechanism that allows to display a message for a certain amount of time (ms).\r\n static hint(message, duration) {\r\n\r\n let hint = window.document.createElement('div');\r\n hint.id = 'BoostletHint';\r\n\r\n hint.style.position = 'fixed';\r\n hint.style.left = '10px';\r\n hint.style.top = '10px';\r\n hint.style.padding = '10px';\r\n hint.style.background = '#fff';\r\n hint.style.color = '#000';\r\n hint.style.zIndex = '100000';\r\n hint.style.border = '1px solid #007ec6';\r\n hint.style.borderRadius = '5px';\r\n hint.style.boxShadow = '0px 0px 20px 5px rgba(0,0,0, 0.3)';\r\n hint.style.fontSize = '14px';\r\n hint.style.fontWeight = 'bold';\r\n hint.style.textAlign = 'center';\r\n\r\n hint.innerHTML = message;\r\n \r\n window.document.body.appendChild(hint);\r\n\r\n if (typeof duration === 'number' && duration > 0) {\r\n setTimeout(function() {\r\n hint.remove();\r\n }, duration);\r\n }\r\n\r\n }\r\n\r\n}","import {Util} from './util.js';\r\n\r\nexport class Framework {\r\n\r\n constructor(instance) {\r\n\r\n this.name = 'generic';\r\n this.instance = instance;\r\n\r\n this.flip_on_png = false;\r\n\r\n }\r\n\r\n get_image(from_canvas) {\r\n\r\n throw \"Missing Implementation.\";\r\n\r\n }\r\n\r\n set_image(new_pixels) {\r\n\r\n throw \"Missing Implementation.\";\r\n\r\n }\r\n\r\n set_mask(new_mask) {\r\n\r\n throw \"Missing Implementation.\";\r\n \r\n }\r\n\r\n select_box(callback) {\r\n\r\n throw \"Missing Implementation.\";\r\n\r\n }\r\n\r\n convert_to_png(uint8array, width, height) {\r\n\r\n return Util.convert_to_png(uint8array, width, height, this.flip_on_png);\r\n\r\n }\r\n\r\n}\r\n","import {Framework} from '../framework.js';\r\n\r\nimport {Util} from '../util.js';\r\n\r\nimport {CanvasFallback} from './canvasFallback.js';\r\n\r\nexport class Cornerstone2D extends Framework {\r\n \r\n constructor(instance) {\r\n\r\n super(instance);\r\n this.name = 'cornerstone2D';\r\n this.canvasFallback = new CanvasFallback();\r\n\r\n this.cornerstonetools_instance = null;\r\n\r\n if (typeof window.cornerstoneTools != 'undefined') {\r\n\r\n // TODO probably not too robust\r\n this.cornerstonetools_instance = window.cornerstoneTools;\r\n\r\n }\r\n\r\n this.flip_on_png = false;\r\n\r\n }\r\n\r\n get_image(from_canvas) {\r\n\r\n let element = this.instance.getEnabledElements()[0];\r\n let pixels = null;\r\n let width = null;\r\n let height = null;\r\n\r\n if (typeof from_canvas != 'undefined') {\r\n\r\n // TODO this is hacky going through the canvas\r\n // later should grab the real volume data\r\n\r\n let canvas = element.canvas;\r\n width = canvas.width;\r\n height = canvas.height;\r\n\r\n let ctx = canvas.getContext('2d');\r\n\r\n let imagedata = ctx.getImageData(0, 0, width, height);\r\n pixels = imagedata.data;\r\n\r\n } else {\r\n\r\n // this is the real image slice data\r\n let imagedata = element.image;\r\n pixels = imagedata.getPixelData();\r\n width = imagedata.width;\r\n height = imagedata.height;\r\n\r\n }\r\n\r\n return {'data':pixels, 'width':width, 'height':height};\r\n\r\n }\r\n\r\n set_image(new_pixels) {\r\n\r\n let element = this.instance.getEnabledElements()[0];\r\n let pixels = element.image.getPixelData();\r\n\r\n // Set the new pixel values\r\n pixels.set(new_pixels);\r\n\r\n // Re-render the current slice\r\n cornerstone.renderGrayscaleImage(element, true);\r\n\r\n }\r\n\r\n set_mask(new_mask) {\r\n return this.canvasFallback.set_mask(new_mask);\r\n \r\n }\r\n\r\n select_box(callback) {\r\n\r\n if(this.cornerstonetools_instance.RectangleRoiTool === undefined) {\r\n console.log(\"Using Boxcraft library to handle box selection.\");\r\n let element = this.instance.getEnabledElements()[0];\r\n let canvas = element.canvas;\r\n\r\n // Disable the Wwwc tool\r\n cornerstoneTools.setToolDisabled(\"Wwwc\");\r\n\r\n BoxCraft.createDraggableBBox(canvas, function (topleft, bottomright) {\r\n callback(topleft, bottomright);\r\n });\r\n\r\n BoxCraft.createResizableBBox(canvas, function(topleft, bottomright) {\r\n console.log(\"Inside Draggable BBox\",topleft, bottomright);\r\n callback(topleft, bottomright);\r\n });\r\n\r\n // return this.canvasFallback.select_box(callback);\r\n\r\n\r\n }\r\n else{\r\n console.log(\"Using Cornerstonetools to handle box selection.\");\r\n this.cornerstonetools_instance.setToolActive(\"RectangleRoi\", {\r\n mouseButtonMask: 1,\r\n });\r\n\r\n let element = this.instance.getEnabledElements()[0];\r\n let canvas = element.canvas;\r\n\r\n canvas.onmouseup = function () {\r\n let state =\r\n this.cornerstonetools_instance.globalImageIdSpecificToolStateManager.saveToolState();\r\n\r\n let topleft =\r\n state[Object.keys(state).pop()].RectangleRoi.data[0].handles.start;\r\n let bottomright =\r\n state[Object.keys(state).pop()].RectangleRoi.data[0].handles.end;\r\n\r\n let topleft_c = this.instance.pixelToCanvas(element.element, topleft);\r\n let bottomright_c = this.instance.pixelToCanvas(\r\n element.element,\r\n bottomright\r\n );\r\n\r\n this.cornerstonetools_instance.clearToolState(\r\n element.element,\r\n \"RectangleRoi\"\r\n );\r\n this.instance.renderGrayscaleImage(element, true);\r\n callback(topleft_c, bottomright_c);\r\n }.bind(this);\r\n }\r\n\r\n }\r\n\r\n}","import { Framework } from \"../framework.js\";\r\n\r\nimport { Util } from \"../util.js\";\r\n\r\n\r\n\r\nexport class CanvasFallback extends Framework {\r\n constructor() {\r\n super();\r\n this.name = \"canvasFallback\";\r\n }\r\n\r\n get_canvas() {\r\n let canvases = document.querySelectorAll('canvas');\r\n let largestCanvas = canvases[0];\r\n let largestArea = largestCanvas.width * largestCanvas.height;\r\n\r\n for (let i = 1; i < canvases.length; i++) {\r\n let area = canvases[i].width * canvases[i].height;\r\n if (area > largestArea) {\r\n largestCanvas = canvases[i];\r\n largestArea = area;\r\n }\r\n }\r\n\r\n return largestCanvas;\r\n }\r\n\r\n get_image(from_canvas) {\r\n\r\n let canvas = this.get_canvas();\r\n\r\n let ctx = canvas.getContext(\"2d\");\r\n\r\n let image = ctx.getImageData(0, 0, canvas.width, canvas.height);\r\n let rgba_image = Util.rgba_to_grayscale(image.data);\r\n\r\n if (from_canvas) {\r\n return { data: image.data, width: image.width, height: image.height };\r\n } else {\r\n return { data: rgba_image, width: image.width, height: image.height };\r\n }\r\n }\r\n\r\n set_image(new_pixels) {\r\n let originalcanvas = this.get_canvas();\r\n\r\n let newcanvas = window.document.createElement(\"canvas\");\r\n\r\n newcanvas.width = originalcanvas.width;\r\n newcanvas.height = originalcanvas.height;\r\n\r\n let ctx = newcanvas.getContext(\"2d\");\r\n\r\n let newPixelsRgba = Util.grayscale_to_rgba(new_pixels);\r\n\r\n let newPixelsClamped = new Uint8ClampedArray(newPixelsRgba);\r\n\r\n let newImageData = new ImageData(\r\n newPixelsClamped,\r\n newcanvas.width,\r\n newcanvas.height\r\n );\r\n\r\n // Draw the new image data onto the canvas\r\n ctx.putImageData(newImageData, 0, 0);\r\n\r\n newcanvas.onclick = function () {\r\n // on click, we will restore the nv canvas\r\n newcanvas.parentNode.replaceChild(originalcanvas, newcanvas);\r\n };\r\n\r\n // replace nv canvas with new one\r\n originalcanvas.parentNode.replaceChild(newcanvas, originalcanvas);\r\n }\r\n\r\n set_mask(new_mask) {\r\n let image = this.get_image(true);\r\n\r\n let originalcanvas = this.get_canvas();\r\n\r\n let newcanvas = window.document.createElement('canvas');\r\n\r\n newcanvas.width = originalcanvas.width;\r\n newcanvas.height = originalcanvas.height;\r\n\r\n let ctx = newcanvas.getContext('2d');\r\n\r\n let imageclamped = new Uint8ClampedArray(image.data);\r\n\r\n let newImageData = new ImageData(\r\n imageclamped,\r\n newcanvas.width,\r\n newcanvas.height\r\n );\r\n\r\n // Draw the new image data onto the canvas\r\n ctx.putImageData(newImageData, 0, 0);\r\n\r\n image = ctx.getImageData(0, 0, newcanvas.width, newcanvas.height);\r\n\r\n let masked_image = Util.harden_mask(image.data, new_mask);\r\n\r\n let masked_image_as_imagedata = new ImageData(\r\n masked_image,\r\n newcanvas.width,\r\n newcanvas.height\r\n );\r\n\r\n ctx.putImageData(masked_image_as_imagedata, 0, 0);\r\n\r\n originalcanvas.parentNode.replaceChild(newcanvas, originalcanvas);\r\n }\r\n\r\n select_box(callback) {\r\n let scriptBoxCraft = document.createElement(\"script\");\r\n scriptBoxCraft.type = \"text/javascript\";\r\n scriptBoxCraft.src = \"https://boostlet.org/dist/boxcraft.min.js\";\r\n // scriptBoxCraft.src = \"https://shrutivarade.github.io/BoxCraft/dist/boxCraft.min.js\";\r\n // scriptBoxCraft.src = \"https://shrutivarade.github.io/boostlet/dist/boxcraft.min.js\";\r\n // scriptBoxCraft.src = \"http://localhost:8000/dist/boxcraft.min.js\";\r\n let canvas = this.get_canvas();\r\n document.head.appendChild(scriptBoxCraft);\r\n\r\n scriptBoxCraft.onload = function() {\r\n\r\n BoxCraft.createDraggableBBox(canvas, function (topleft, bottomright) {\r\n console.log(\"Inside Draggable BBox\", topleft, bottomright);\r\n callback(topleft, bottomright);\r\n });\r\n }\r\n\r\n }\r\n\r\n}\r\n","import {Framework} from '../framework.js';\n\nimport {Util} from '../util.js';\nimport {CanvasFallback} from './canvasFallback.js';\n\nexport class NiiVue extends Framework {\n \n constructor(instance) {\n\n super(instance);\n this.name = 'niivue';\n this.canvasFallback = new CanvasFallback();\n\n this.flip_on_png = true;\n\n this.onMouseDown = false;\n this.x1 = null;\n this.y1 = null;\n this.x2 = null;\n this.y2 = null;\n\n }\n\n get_image(from_canvas) {\n\n \n let pixels = null;\n let width = null;\n let height = null;\n\n if (!Util.is_defined(from_canvas)) {\n\n // use the canvas\n\n let element = this.instance.canvas;\n\n let old_crosshaircolor = this.instance.opts.crosshairColor;\n let old_crosshairwidth = this.instance.opts.crosshairWidth;\n\n this.instance.setCrosshairColor([0,0,0,0]);\n this.instance.opts.crosshairWidth=0;\n this.instance.updateGLVolume();\n\n\n let ctx = this.instance.gl;\n\n \n width = ctx.drawingBufferWidth;\n height = ctx.drawingBufferHeight;\n\n pixels = new Uint8Array(width * height * 4);\n ctx.readPixels(\n 0, \n 0, \n width, \n height, \n ctx.RGBA, \n ctx.UNSIGNED_BYTE, \n pixels);\n\n // restore crosshairs\n this.instance.setCrosshairColor(old_crosshaircolor);\n this.instance.opts.crosshairWidth = old_crosshairwidth;\n\n\n // convert rgba pixels to grayscale\n pixels = Util.rgba_to_grayscale(pixels);\n\n\n } else {\n\n // grab the real pixels of the current slice and return it\n // set width and height accordingly\n\n let v = this.instance.volumes[0];\n let currentSlice = this.instance.opts.sliceType;\n let currentCrossHairPos = this.instance.scene.crosshairPos;\n \n \n // Default to full volume\n let start = [0, 0, 0];\n let end = [v.dims[1], v.dims[2], v.dims[3]];\n\n if(currentSlice == 0){\n // axial — slice along Z\n let z_index = Math.floor(currentCrossHairPos[2] * v.dims[3]);\n width = v.dims[1];\n height = v.dims[2];\n start = [0, 0, z_index];\n end = [v.dims[1], v.dims[2], z_index + 1];\n }\n else if(currentSlice == 1){\n // coronal — slice along Y\n let y_index = Math.floor(currentCrossHairPos[1] * v.dims[2]);\n width = v.dims[1];\n height = v.dims[3];\n start = [0, y_index, 0];\n end = [v.dims[1], y_index + 1 , v.dims[3]];\n }\n else if(currentSlice == 2){\n // sagittal — slice along X\n let x_index = Math.floor(currentCrossHairPos[0] * v.dims[1]);\n width = v.dims[2];\n height = v.dims[3];\n start = [x_index, 0, 0];\n end = [x_index + 1, v.dims[2], v.dims[3]];\n }\n else {\n // multiplanar (sliceType 3) — no single slice to extract,\n // return the full volume\n width = v.dims[1];\n height = v.dims[2];\n }\n\n pixels = v.getVolumeData(start, end)[0];\n\n }\n\n return {'data':pixels, 'width':width, 'height':height};\n\n }\n\n\n\n get_subvolume(start, end) {\n const [data, dims] = this.instance.volumes[0].getVolumeData(start, end);\n return { data, dims };\n }\n\n get_dims(){\n const v = this.instance.volumes[0];\n const currentSlice = this.instance.opts.sliceType;\n\n if(currentSlice == 0) return [v.dims[1], v.dims[2], 1]; //axial\n if(currentSlice == 1 ) return [v.dims[1], v.dims[3], 1 ]; // coronal\n if(currentSlice == 2) return [v.dims[2], v.dims[3], 1 ]; // saggital\n return [v.dims[1], v.dims[2], 1]; // multiplanar fallback\n } \n\n /**\n * Sets the NiiVue.js image.\n * \n * If is_rgba==true, we do *not* convert to RGBA before setting on canvas.\n **/\n set_image(new_pixels, is_rgba, no_flip) {\n\n // TODO this is hacky since we dont work with the real volume yet\n // create new canvas\n // put pixels on canvas\n // show canvas\n // hide on click\n\n let originalcanvas = this.instance.canvas;\n\n let newcanvas = window.document.createElement('canvas');\n newcanvas.width = originalcanvas.width;\n newcanvas.height = originalcanvas.height;\n\n // put new_pixels down\n let ctx = newcanvas.getContext('2d');\n\n let new_pixels_rgba = null;\n\n if (Util.is_defined(is_rgba)) {\n\n new_pixels_rgba = new_pixels;\n\n } else {\n\n new_pixels_rgba = Util.grayscale_to_rgba(new_pixels);\n\n\n }\n\n let new_pixels_clamped = new Uint8ClampedArray(new_pixels_rgba);\n\n let new_image_data = new ImageData(new_pixels_clamped, newcanvas.width, newcanvas.height);\n \n\n ctx.putImageData(new_image_data, 0, 0);\n\n if (!Util.is_defined(no_flip)) {\n // some flipping action\n ctx.save();\n ctx.scale(1, -1);\n ctx.drawImage(newcanvas, 0, -newcanvas.height);\n ctx.restore();\n }\n\n\n newcanvas.onclick = function() {\n\n // on click, we will restore the nv canvas\n newcanvas.parentNode.replaceChild(originalcanvas, newcanvas);\n\n }\n\n // replace nv canvas with new one\n // originalcanvas.parentNode.replaceChild(newcanvas, originalcanvas);\n newcanvas.style.width = originalcanvas.clientWidth+'px';\n newcanvas.style.height = originalcanvas.clientHeight+'px';\n originalcanvas.parentNode.replaceChild(newcanvas, originalcanvas);\n\n }\n\n set_mask(new_mask) {\n\n // merge image + mask\n // and then call set_image with that information\n\n let image = this.get_image(true);\n\n // TODO here we need to flip one more time, this is until\n // we use the official niivue infrastructure for adding\n // a segmentation layer\n let originalcanvas = this.instance.canvas;\n\n let newcanvas = window.document.createElement('canvas');\n newcanvas.width = originalcanvas.width;\n newcanvas.height = originalcanvas.height;\n // put new_pixels down\n let ctx = newcanvas.getContext('2d');\n let imageclamped = new Uint8ClampedArray(image.data);\n let imagedata = new ImageData(imageclamped, image.width, image.height);\n ctx.putImageData(imagedata, 0, 0);\n ctx.save();\n ctx.scale(1, -1);\n ctx.drawImage(newcanvas, 0, -newcanvas.height);\n ctx.restore();\n image = ctx.getImageData(0, 0, newcanvas.width, newcanvas.height);\n // end of flip\n\n let masked_image = Util.harden_mask(image.data, new_mask);\n\n this.set_image(masked_image, true, true); // rgba data, no flip\n\n\n }\n\n select_box(callback) {\n return this.canvasFallback.select_box(callback);\n\n }\n\n}\n","import {Framework} from '../framework.js';\r\n\r\nimport {Util} from '../util.js';\r\n\r\nimport {CanvasFallback} from './canvasFallback.js';\r\n\r\nexport class OpenSeaDragon extends Framework {\r\n constructor(instance) {\r\n super(instance);\r\n this.name = 'opensedragon';\r\n this.canvasFallback = new CanvasFallback();\r\n\r\n }\r\n\r\n get_image(from_canvas) {\r\n return this.canvasFallback.get_image(from_canvas);\r\n }\r\n\r\n set_image(new_pixels) {\r\n return this.canvasFallback.set_image(new_pixels);\r\n }\r\n\r\n set_mask(new_mask) {\r\n // return this.canvasFallback.set_mask(new_mask);\r\n\r\n let viewer = null;\r\n let vs = this.instance._viewers;\r\n vs.forEach(function (e) {\r\n if (e.id == \"viewer\") {\r\n viewer = e;\r\n }\r\n });\r\n\r\n if (!viewer) {\r\n throw \"OpenSeaDragon viewer not found.\";\r\n }\r\n\r\n let canvas = viewer.canvas.children[0];\r\n width = canvas.width;\r\n height = canvas.height;\r\n\r\n let ctx = canvas.getContext(\"2d\");\r\n let imagedata = ctx.getImageData(0, 0, width, height);\r\n let pixels = imagedata.data;\r\n\r\n let masked_image = Util.harden_mask(pixels, new_mask);\r\n let masked_image_as_imagedata = new ImageData(masked_image, width, height);\r\n ctx.putImageData(masked_image_as_imagedata, 0, 0);\r\n }\r\n\r\n select_box(callback) {\r\n\r\n console.log(\"Using Boxcraft library to handle box selection.\");\r\n let viewer = null;\r\n let vs = this.instance._viewers;\r\n vs.forEach(function (e) {\r\n if (e.id == \"viewer\") {\r\n viewer = e;\r\n }\r\n });\r\n\r\n if (!viewer) {\r\n throw \"OpenSeaDragon viewer not found.\";\r\n }\r\n\r\n let canvas = viewer.canvas;\r\n\r\n BoxCraft.createDraggableBBox(canvas, function (topleft, bottomright) {\r\n callback(topleft, bottomright);\r\n });\r\n\r\n }\r\n\r\n \r\n\r\n}\r\n \r\n","import { Framework } from \"../framework.js\";\r\n\r\nimport { Util } from \"../util.js\";\r\n\r\nimport { CanvasFallback } from \"./canvasFallback.js\";\r\n\r\nexport class Xtk extends Framework {\r\n constructor(instance) {\r\n super(instance);\r\n this.name = \"xtk\";\r\n this.canvasFallback = new CanvasFallback();\r\n }\r\n\r\n get_image(from_canvas) {\r\n return this.canvasFallback.get_image(from_canvas);\r\n }\r\n\r\n set_image(new_pixels) {\r\n return this.canvasFallback.set_image(new_pixels);\r\n }\r\n\r\n set_mask(new_mask) {\r\n return this.canvasFallback.set_mask(new_mask);\r\n }\r\n\r\n select_box(callback) {\r\n return this.canvasFallback.select_box(callback);\r\n }\r\n}\r\n","import { Framework } from \"../framework.js\";\r\n\r\nimport { Util } from \"../util.js\";\r\n\r\nimport { CanvasFallback } from \"./canvasFallback.js\";\r\n\r\nexport class Papaya extends Framework {\r\n constructor(instance) {\r\n super(instance);\r\n this.name = \"papaya\";\r\n this.canvasFallback = new CanvasFallback();\r\n }\r\n\r\n get_image(from_canvas) {\r\n return this.canvasFallback.get_image(from_canvas);\r\n }\r\n\r\n set_image(new_pixels) {\r\n return this.canvasFallback.set_image(new_pixels);\r\n }\r\n\r\n set_mask(new_mask) {\r\n return this.canvasFallback.set_mask(new_mask);\r\n }\r\n\r\n select_box(callback) {\r\n return this.canvasFallback.select_box(callback);\r\n }\r\n}\r\n","\r\nimport {Boostlet} from \"./boostlet.js\"\r\n\r\nwindow.console.log('BOOSTLET VERSION 0.1-beta');\r\n\r\n// register global namespace with a new boostlet instance\r\n// later we might want to support multiple active boostlets\r\nwindow.Boostlet = new Boostlet();\r\n","import {Util} from './util.js';\n\nimport {Framework} from './framework.js';\n\nexport class Boostlet {\n\n constructor() {\n this.framework = null;\n }\n\n /**\n * Initializes the Boostlet.\n * \n * This includes several steps such as identifying the \n * visualization/rendering framework that is available. \n * \n * TODO: Later we want to have fallbacks in place if the framework\n * is not detected.\n * \n */\n init(name, instance) {\n\n if (typeof name != 'undefined' && typeof instance != 'undefined') {\n\n console.log('Framework forced by user!');\n throw \"Forced Framework Not Implemented.\";\n // TODO\n\n } else {\n\n this.framework = Util.detect_framework();\n\n }\n\n if (this.framework) {\n\n console.log('Found', this.framework, '!')\n \n } else {\n\n throw \"Framework Not Found.\";\n\n }\n\n }\n\n /**\n * Let's the user select a region of interest box.\n */\n async select_box(callback) {\n\n this.framework.select_box(callback);\n\n }\n\n /**\n * Let's the user select (multiple) seeds.\n */\n async select_seed(howmany) {\n\n throw \"Missing Implementation.\";\n\n }\n\n /**\n * Loads an external javascript file asynchronously. \n */\n async load_script(url, callback) {\n\n Util.load_script(url, callback);\n\n }\n\n /**\n * Sends a HTTP POST request to a url with some data.\n */\n async send_http_post(url, data, callback) {\n\n Util.send_http_post(url, data, callback);\n\n }\n\n /**\n * Gets the current image (2D).\n * \n * TODO: Optional bounding box should be supported.\n * \n */\n get_image(from_canvas) {\n\n return this.framework.get_image(from_canvas);\n\n }\n\n /**\n * Sets the current image (2D).\n * \n */\n set_image(new_pixels) {\n\n return this.framework.set_image(new_pixels);\n\n }\n\n /**\n * Sets the current mask (2D).\n * \n */\n set_mask(new_mask) {\n\n return this.framework.set_mask(new_mask);\n\n }\n\n get_dims() {\n return this.framework.get_dims();\n }\n\n get_subvolume(start, end) {\n return this.framework.get_subvolume(start, end);\n }\n\n /**\n * Encode raw image data to PNG.\n */\n convert_to_png(uint8array, width, height) {\n\n return this.framework.convert_to_png(uint8array, width, height);\n\n }\n\n filter(pixels, width, height, kernel) {\n\n return Util.filter(pixels, width, height, kernel);\n\n }\n\n /**\n * Displays a small div located at the top left corner of the screen with message and will disappear after the specified time (ms).\n * \n */\n hint(message, duration) {\n\n return Util.hint(message, duration);\n\n }\n\n}\n"],"names":[],"version":3,"file":"boostlet.min.js.map"} \ No newline at end of file diff --git a/examples/PixelExplorer.js b/examples/PixelExplorer.js new file mode 100644 index 00000000..f2ee9704 --- /dev/null +++ b/examples/PixelExplorer.js @@ -0,0 +1,146 @@ +CATEGORY = "Visualization" + +const script = document.createElement("script"); +script.type = "text/javascript"; +script.src = "https://boostlet.org/dist/boostlet.min.js"; + +script.onload = run; +document.head.appendChild(script); + +const HALF = 4; + +function run() { + Boostlet.init(); + + if (Boostlet.framework.name !== 'niivue') { + alert('Only niivue is supported right now :('); + return; + } + + const nv = Boostlet.framework.instance; + + if (!nv.volumes.length) { + alert('No volume loaded yet!'); + return; + } + + // Create the panel once + plot(); + + // Save the existing onLocationChange so we don't clobber it + const existingOnLocationChange = nv.onLocationChange; + + // Hook into location change — fires on every crosshair move / slice change + nv.onLocationChange = function(loc) { + // call the original if it existed + if (existingOnLocationChange) existingOnLocationChange(loc); + + if (!nv.volumes.length) return; + + const v = [Math.round(loc.vox[0]), Math.round(loc.vox[1]), Math.round(loc.vox[2])]; // Cursor position in voxel coordinates. + + const start = [v[0] - HALF, v[1] - HALF, v[2] - HALF]; + const end = [v[0] + HALF, v[1] + HALF, v[2] + HALF]; + + // collapses the slice plane axis to a single voxel + // axial(0) Z=2, coronal(1) Y=1, sagittal(2) X=0 so that you don't get a 3D chunk of data + const fixedAxis = nv.opts.sliceType === nv.sliceTypeSagittal ? 0 + : nv.opts.sliceType === nv.sliceTypeCoronal ? 1 : 2; + start[fixedAxis] = end[fixedAxis] = Math.round((start[fixedAxis] + end[fixedAxis]) / 2); // Flattens axis, finds midpoint + + const { data, dims } = Boostlet.get_subvolume(start, end); + if (data && dims) { + const mc = document.getElementById('PixelExplorerCanvas'); + if (mc) drawMatrix(data, dims, mc); + } + }; +} + +// render voxel values as a labeled grayscale grid +function drawMatrix(data, dims, mc) { + const nv = Boostlet.framework.instance; + const { cal_min, cal_max } = nv.volumes[0]; + const range = cal_max - cal_min || 1; // range between display values. + const ctx = mc.getContext('2d'); + + // apply nifti slope/intercept to convert raw values to display values. + // raw voxel values can be stored in arbitrary units (e.g. large negatives like -9000) + // and need to be scaled to match what NiiVue actually displays: display_value = raw * slope + inter + const slope = nv.volumes[0].hdr.scl_slope || 1; + const inter = nv.volumes[0].hdr.scl_inter || 0; + + // getVolumeData returns dims as X Y Z and the collapsed axis has size 1 + // the first non 1 dim is cols second is rows + const [cols, rows] = dims.filter(d => d > 1); + if (!cols || !rows) return; + + const cell = Math.floor(Math.min(mc.width / cols, mc.height / rows)); // picks between max cell width and max cell height. picks the smallest + if (cell < 1) return; + + // Figures out whether to show a label or not. needs to be changed IMO + const showLabels = cell >= 8; + if (showLabels) { + ctx.font = `${Math.max(Math.floor(cell * 0.28), 6)}px monospace`; + ctx.textAlign = 'center'; + ctx.textBaseline = 'middle'; + } + + ctx.clearRect(0, 0, mc.width, mc.height); + + // Loops through every voxel in the region, draws a grey square for each one based on how bright it is. If the cells are + // big enough, it prints out raw number on top. + for (let r = 0; r < rows; r++) { + for (let c = 0; c < cols; c++) { + const raw = data[c + (rows - 1 - r) * cols]; + const val = raw * slope + inter; // convert raw to display value + const norm = (val - cal_min) / range; // Gives a range from 0 - 1, gets normalized to 0-255 in the line below + const g = Math.round(norm * 255); + + ctx.fillStyle = `rgb(${g},${g},${g})`; + ctx.fillRect(c * cell, r * cell, cell, cell); + + if (showLabels) { + ctx.fillStyle = norm > 0.55 ? 'rgba(0,0,0,0.8)' : 'rgba(255,255,255,0.8)'; + ctx.fillText(val.toFixed(0), c * cell + cell / 2, r * cell + cell / 2); + } + } + } +} + +function plot() { + // Remove existing panel if re ran + const existing = document.getElementById('PixelExplorerDiv'); + if (existing) existing.remove(); + + let container = window.document.createElement('div'); + container.id = 'PixelExplorerDiv'; + container.style.cssText = 'position:fixed; top:10px; left:10px; z-index:1000; cursor:move;'; + window.document.body.appendChild(container); + + const mc = document.createElement('canvas'); + mc.id = 'PixelExplorerCanvas'; + mc.width = 400; + mc.height = 400; + mc.style.cssText = 'display:block; width:400px; height:400px;'; + container.appendChild(mc); + + // Drag logic + let startX, startY, startLeft, startTop; + container.addEventListener('mousedown', function(e) { + startX = e.clientX; + startY = e.clientY; + startLeft = container.offsetLeft; + startTop = container.offsetTop; + + function onMove(e) { + container.style.left = (startLeft + e.clientX - startX) + 'px'; + container.style.top = (startTop + e.clientY - startY) + 'px'; + } + function onUp() { + document.removeEventListener('mousemove', onMove); + document.removeEventListener('mouseup', onUp); + } + document.addEventListener('mousemove', onMove); + document.addEventListener('mouseup', onUp); + }); +} \ No newline at end of file diff --git a/index.html b/index.html index 28289c9e..9b0d88f3 100644 --- a/index.html +++ b/index.html @@ -234,7 +234,7 @@ // return; - var examples = ['sobel.js', 'segmentanything.js', 'imageCaptioning.js', 'meshAR.js', 'fibersAR.js', 'plotly.js', 'trako.js', 'melanoma.js', 'webllm.js', 'brainchop.js', 'CatVSDog.js']; + var examples = ['sobel.js', 'segmentanything.js', 'imageCaptioning.js', 'meshAR.js', 'fibersAR.js', 'plotly.js', 'trako.js', 'melanoma.js', 'webllm.js', 'brainchop.js', 'CatVSDog.js', 'PixelExplorer.js']; var baseurl = 'https://raw.githubusercontent.com/mpsych/boostlet/main/examples/'; // var baseurl = 'https://raw.githubusercontent.com/gaiborjosue/boostlet/webllm/examples/'; @@ -334,6 +334,8 @@


+ +

diff --git a/src/boostlet.js b/src/boostlet.js index 2a0acd3d..6d33f4a5 100644 --- a/src/boostlet.js +++ b/src/boostlet.js @@ -112,6 +112,14 @@ export class Boostlet { } + get_dims() { + return this.framework.get_dims(); + } + + get_subvolume(start, end) { + return this.framework.get_subvolume(start, end); + } + /** * Encode raw image data to PNG. */ diff --git a/src/frameworks/niivue.js b/src/frameworks/niivue.js index e305c600..3e22499b 100644 --- a/src/frameworks/niivue.js +++ b/src/frameworks/niivue.js @@ -120,6 +120,23 @@ export class NiiVue extends Framework { } + + + get_subvolume(start, end) { + const [data, dims] = this.instance.volumes[0].getVolumeData(start, end); + return { data, dims }; + } + + get_dims(){ + const v = this.instance.volumes[0]; + const currentSlice = this.instance.opts.sliceType; + + if(currentSlice == 0) return [v.dims[1], v.dims[2], 1]; //axial + if(currentSlice == 1 ) return [v.dims[1], v.dims[3], 1 ]; // coronal + if(currentSlice == 2) return [v.dims[2], v.dims[3], 1 ]; // saggital + return [v.dims[1], v.dims[2], 1]; // multiplanar fallback + } + /** * Sets the NiiVue.js image. * From 967d02ab276fd409ba30959a6a3ce8e7d2534219 Mon Sep 17 00:00:00 2001 From: bronsdonayden Date: Sun, 21 Jun 2026 18:18:12 -0400 Subject: [PATCH 2/2] retrigger CI