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Fix horizontal flip functionality for Hi-C display #3667

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May 18, 2023
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10 changes: 10 additions & 0 deletions plugins/hic/src/HicRenderer/HicRenderer.tsx
Original file line number Diff line number Diff line change
Expand Up @@ -61,7 +61,9 @@ export default class HicRenderer extends ServerSideRendererType {
resolution,
sessionId,
adapterConfig,
regions,
} = props
const [region] = regions
const { dataAdapter } = await getAdapter(
this.pluginManager,
sessionId,
Expand All @@ -87,6 +89,14 @@ export default class HicRenderer extends ServerSideRendererType {
maxBin = Math.max(Math.max(bin1, bin2), maxBin)
}
await abortBreakPoint(signal)
function horizontallyFlip() {
ctx.scale(-1, 1)
const width = (region.end - region.start) / bpPerPx
ctx.translate(-width, 0)
}
if (region.reversed === true) {
horizontallyFlip()
}
ctx.rotate(-Math.PI / 4)
let start = Date.now()
for (let i = 0; i < features.length; i++) {
Expand Down