redo timeplot web

1 files changed, 22 insertions, 0 deletions

diff --git a/web-timeplot/src/plot/plot-buffer.js b/web-timeplot/src/plot/plot-buffer.js
new file mode 100644
index 0000000..b13cdd8
--- /dev/null
+++ b/web-timeplot/src/plot/plot-buffer.js
@@ -0,0 +1,22 @@
+export class PlotBuffer {
+    constructor(maxPoints = 1600) {
+        this.maxPoints = maxPoints;
+        this.points = [];
+    }
+
+    addPoint(point) {
+        this.points.push(point);
+        if (this.points.length > this.maxPoints) {
+            this.points.splice(0, this.points.length - this.maxPoints);
+        }
+    }
+
+    clear() {
+        this.points = [];
+    }
+
+    getVisiblePoints(currentPlotTimeMs, windowDurationMs) {
+        const minTime = currentPlotTimeMs - windowDurationMs;
+        return this.points.filter((point) => point.timeMs >= minTime && point.timeMs <= currentPlotTimeMs);
+    }
+}