33 lines
1.2 KiB
JavaScript
33 lines
1.2 KiB
JavaScript
// Calculate the longest and shortest diameters for the given measurementData
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export default function(eventData, measurementData) {
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const { rowPixelSpacing, columnPixelSpacing } = eventData.image;
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const { start, end, perpendicularStart, perpendicularEnd } = measurementData.handles;
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// updatePerpendicularLineHandles(eventData, measurementData);
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// Calculate the long axis length
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const dx = (start.x - end.x) * (columnPixelSpacing || 1);
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const dy = (start.y - end.y) * (rowPixelSpacing || 1);
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let length = Math.sqrt(dx * dx + dy * dy);
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// Calculate the short axis length
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const wx = (perpendicularStart.x - perpendicularEnd.x) * (columnPixelSpacing || 1);
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const wy = (perpendicularStart.y - perpendicularEnd.y) * (rowPixelSpacing || 1);
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let width = Math.sqrt(wx * wx + wy * wy);
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if (!width) {
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width = 0;
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}
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// Length is always longer than width
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if (width > length) {
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const tempW = width;
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const tempL = length;
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length = tempW;
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width = tempL;
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}
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// Set measurement text to show lesion table
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measurementData.longestDiameter = length.toFixed(1);
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measurementData.shortestDiameter = width.toFixed(1);
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}
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