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"use client";
import { useCallback, useEffect, useMemo, useState } from "react";
import { useStore } from "@/store/useStore";
import { Panel } from "./Panel";
import { useHyperScatter } from "./useHyperScatter";
import { useLabelLegend } from "./useLabelLegend";
import type { Geometry } from "@/types";
import { findLayoutByGeometry, listAvailableGeometries } from "@/lib/layouts";
import { fetchEmbeddings } from "@/lib/api";
interface ScatterPanelProps {
className?: string;
layoutKey?: string;
geometry?: Geometry;
}
export function ScatterPanel({
className = "",
layoutKey,
geometry,
}: ScatterPanelProps) {
const {
datasetInfo,
embeddingsByLayoutKey,
setEmbeddingsForLayout,
selectedIds,
setSelectedIds,
beginLassoSelection,
hoveredId,
setHoveredId,
setActiveLayoutKey,
labelFilter,
} = useStore();
const [localGeometry, setLocalGeometry] = useState<Geometry>("euclidean");
// Check which geometries are available
const availableGeometries = useMemo(() => {
return listAvailableGeometries(datasetInfo?.layouts ?? []);
}, [datasetInfo?.layouts]);
useEffect(() => {
if (geometry) return;
if (availableGeometries.length === 0) return;
if (!availableGeometries.includes(localGeometry)) {
setLocalGeometry(availableGeometries[0]);
}
}, [availableGeometries, geometry, localGeometry]);
const resolvedGeometry = geometry ?? localGeometry;
const resolvedLayoutKey = useMemo(() => {
if (!datasetInfo) return layoutKey ?? null;
if (layoutKey) {
const exists = datasetInfo.layouts.some((layout) => layout.layout_key === layoutKey);
if (exists) return layoutKey;
}
const layout = findLayoutByGeometry(datasetInfo.layouts, resolvedGeometry);
return layout?.layout_key ?? datasetInfo.layouts[0]?.layout_key ?? null;
}, [datasetInfo, layoutKey, resolvedGeometry]);
const embeddings = resolvedLayoutKey ? embeddingsByLayoutKey[resolvedLayoutKey] ?? null : null;
useEffect(() => {
if (!resolvedLayoutKey) return;
setActiveLayoutKey(resolvedLayoutKey);
}, [resolvedLayoutKey, setActiveLayoutKey]);
useEffect(() => {
if (!resolvedLayoutKey) return;
if (embeddingsByLayoutKey[resolvedLayoutKey]) return;
let cancelled = false;
fetchEmbeddings(resolvedLayoutKey)
.then((data) => {
if (cancelled) return;
setEmbeddingsForLayout(resolvedLayoutKey, data);
})
.catch((err) => {
if (cancelled) return;
console.error("Failed to load embeddings:", err);
})
return () => {
cancelled = true;
};
}, [embeddingsByLayoutKey, resolvedLayoutKey, setEmbeddingsForLayout]);
const { labelsInfo } = useLabelLegend({ datasetInfo, embeddings, labelFilter });
const {
canvasRef,
overlayCanvasRef,
containerRef,
handlePointerDown,
handlePointerMove,
handlePointerUp,
handlePointerLeave,
handleDoubleClick,
rendererError,
} = useHyperScatter({
embeddings,
labelsInfo,
selectedIds,
hoveredId,
setSelectedIds,
beginLassoSelection,
setHoveredId,
hoverEnabled: !labelFilter,
});
const focusLayout = useCallback(() => {
if (!resolvedLayoutKey) return;
setActiveLayoutKey(resolvedLayoutKey);
}, [resolvedLayoutKey, setActiveLayoutKey]);
const loadingLabel = resolvedLayoutKey
? "Loading embeddings..."
: "No embeddings layout available";
return (
<Panel className={className}>
{/* Main content area - min-h-0 prevents flex overflow */}
<div className="flex-1 flex min-h-0">
{/* Canvas container */}
<div ref={containerRef} className="flex-1 relative min-w-0">
<canvas
ref={canvasRef}
className="absolute inset-0"
style={{ zIndex: 1 }}
onPointerDown={(e) => {
focusLayout();
handlePointerDown(e);
}}
onPointerMove={handlePointerMove}
onPointerUp={handlePointerUp}
onPointerCancel={handlePointerUp}
onPointerLeave={handlePointerLeave}
onDoubleClick={handleDoubleClick}
onPointerEnter={focusLayout}
/>
{/* Lasso overlay (screen-space) */}
<canvas
ref={overlayCanvasRef}
className="absolute inset-0 pointer-events-none"
style={{ zIndex: 20 }}
/>
{/* Loading overlay */}
{rendererError ? (
<div className="absolute inset-0 flex items-center justify-center bg-card/85 z-10 p-6">
<div className="max-w-md text-center">
<div className="text-sm font-semibold text-foreground mb-2">Browser not supported</div>
<div className="text-sm text-muted-foreground">{rendererError}</div>
</div>
</div>
) : (
!embeddings && (
<div className="absolute inset-0 flex items-center justify-center bg-card/80 z-10">
<div className="text-muted-foreground">{loadingLabel}</div>
</div>
)
)}
</div>
</div>
</Panel>
);
}
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