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feat(plot): lock axes and calculate marker levels in dB

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Andrey
2026-09-04 13:50:20 +03:00
parent f6787163dc
commit d9eb7dd9ad
8 changed files with 42 additions and 6 deletions
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2
c/set-protocol/ports/android/kotlin/ru/setcorp/setprotocol/trends/NativePlot.kt
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@@ -30,3 +30,5 @@ data class PlotBounds(val left: Double, val right: Double, val bottom: Double, v
fun plotTickStep(range: Double, pixels: Double): Double = NativePlot.call(5, range, pixels)[0]
fun plotDelta(a: Double, b: Double, multiplier: Double = 1.0): Double = NativePlot.call(6, a, b, multiplier)[0]
fun plotDbDelta(a: Double, b: Double): Double? =
runCatching { NativePlot.call(7, a, b)[0] }.getOrNull()

6
c/set-protocol/ports/android/kotlin/ru/setcorp/setprotocol/trends/PlotViewport.kt
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@@ -1,10 +1,12 @@
package ru.setcorp.setprotocol.trends
/** Normalized top-left viewport; independent of pixels, units, toolkit and samples. */
data class PlotViewport(val x: Double = 0.0, val y: Double = 0.0, val width: Double = 1.0, val height: Double = 1.0) {
data class PlotViewport(val x: Double = 0.0, val y: Double = 0.0, val width: Double = 1.0, val height: Double = 1.0,
val locked: Boolean = false) {
fun transform(zoomX: Double = 1.0, zoomY: Double = 1.0, panX: Double = 0.0, panY: Double = 0.0,
focusX: Double = 0.5, focusY: Double = 0.5): PlotViewport {
if (locked) return this
val result = NativePlot.call(0, x, y, width, height, zoomX, zoomY, panX, panY, focusX, focusY)
return PlotViewport(result[0], result[1], result[2], result[3])
return PlotViewport(result[0], result[1], result[2], result[3], locked)
}
}

8
c/set-protocol/ports/android/tests/ru/setcorp/setprotocol/trends/PlotContractTest.kt
View File

@@ -37,4 +37,12 @@ class PlotContractTest {
val crossed = markers.move(TrendMarker.A, 1900.0).move(TrendMarker.B, 1100.0)
assertEquals(-800.0, plotDelta(crossed.a!!, crossed.b!!), 0.0)
}
@Test fun lockedViewportIgnoresZoomAndPanAndDbUsesAmplitudeRatio() {
val locked = PlotViewport(locked = true)
assertEquals(locked, locked.transform(zoomX = 2.0, panY = 0.2))
assertEquals(20.0, plotDbDelta(1.0, 10.0)!!, 1e-10)
assertEquals(-20.0, plotDbDelta(10.0, 1.0)!!, 1e-10)
assertNull(plotDbDelta(0.0, 1.0))
}
}