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[Plot] Tweak fixed-duration code

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Tweak fixed-duration code such that data is not
lost; WTD-1273.
This commit is contained in:
Victor Woeltjen 2015-06-20 10:39:35 -07:00
parent fbf682d5fa
commit 215d3ffd72
1 changed files with 11 additions and 7 deletions
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18
platform/features/plot/src/elements/PlotUpdater.js
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@ -146,17 +146,16 @@ define(
return lineBuffer.getRangeExtrema();
}).reduce(reduceExtrema);
// Calculate best-fit dimensions
dimensions = (rangeExtrema[0] === rangeExtrema[1]) ?
[dimensionsOf(domainExtrema), 2.0 ] :
[dimensionsOf(domainExtrema), dimensionsOf(rangeExtrema)];
origin = [originOf(domainExtrema), originOf(rangeExtrema)];
// ...then enforce a fixed duration if needed
if (fixedDuration !== undefined) {
origin[0] = Math.min(
origin[0],
origin[0] + dimensions[0] - fixedDuration
);
dimensions[0] = Math.max(dimensions[0], fixedDuration);
origin[0] = origin[0] + dimensions[0] - fixedDuration;
dimensions[0] = fixedDuration;
}
}
}
@ -169,7 +168,9 @@ define(
function enforceDurationForBuffer(plotLineBuffer) {
var index = plotLineBuffer.findInsertionIndex(cutoff);
if (index > 0) {
plotLineBuffer.trim(index);
// Leave one point untrimmed, such that line will
// continue off left edge of visible plot area.
plotLineBuffer.trim(index - 1);
}
}
@ -196,7 +197,10 @@ define(
// Update plot extremea and enforce maximum duration
function updateBounds() {
updateExtrema();
enforceDuration();
// Currently not called; this will trim out off-screen
// data from the plot, but doing this will disallow things
// like pan-back, so debatable if we really want to do this
//enforceDuration();
}
// Handle new telemetry data