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examples: Add image (ijk) coordinates to stackCanvasToWorld example #1292

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merged 2 commits into from
Jun 5, 2024
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examples: Add image (ijk) coordinates to stackCanvasToWorld example #1292

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c593dd5
Add image (ijk) coordinates to stackCanvasToWorld example
sedghi May 30, 2024
fd92875
Refactor imagePosElement update in stackCanvasToWorld example
sedghi Jun 5, 2024
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13 changes: 11 additions & 2 deletions packages/core/examples/stackCanvasToWorld/index.ts
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Original file line number Diff line number Diff line change
@@ -1,4 +1,4 @@
import { RenderingEngine, Types, Enums } from '@cornerstonejs/core';
import { RenderingEngine, Types, Enums, utilities } from '@cornerstonejs/core';
import {
initDemo,
createImageIdsAndCacheMetaData,
Expand All @@ -12,11 +12,12 @@ console.warn(
);

const { ViewportType } = Enums;
const { worldToImageCoords } = utilities;

// ======== Set up page ======== //
setTitleAndDescription(
'Stack CanvasToWorld',
'Displays the world coordinate when the mouse is moved over the canvas.'
'Displays the world and image (ijk) coordinates when the mouse is moved over the canvas.'
);

const content = document.getElementById('content');
Expand All @@ -31,14 +32,17 @@ const mousePosDiv = document.createElement('div');

const canvasPosElement = document.createElement('p');
const worldPosElement = document.createElement('p');
const imagePosElement = document.createElement('p');

canvasPosElement.innerText = 'canvas:';
worldPosElement.innerText = 'world:';
imagePosElement.innerText = 'image (ijk):';

content.appendChild(mousePosDiv);

mousePosDiv.appendChild(canvasPosElement);
mousePosDiv.appendChild(worldPosElement);
mousePosDiv.appendChild(imagePosElement);

// ============================= //

Expand Down Expand Up @@ -101,11 +105,16 @@ async function run() {
];
// Convert canvas coordinates to world coordinates
const worldPos = viewport.canvasToWorld(canvasPos);
// Convert world coordinates to image (ijk) coordinates
const imagePos = worldToImageCoords(viewport.getCurrentImageId(), worldPos);

canvasPosElement.innerText = `canvas: (${canvasPos[0]}, ${canvasPos[1]})`;
worldPosElement.innerText = `world: (${worldPos[0].toFixed(
2
)}, ${worldPos[1].toFixed(2)}, ${worldPos[2].toFixed(2)})`;

const [i, j, k] = imagePos.map((item) => item.toFixed(2));
imagePosElement.innerText = `image (ij): (${i}, ${j})`;
});
}

Expand Down