45 lines
1.0 KiB
C#
45 lines
1.0 KiB
C#
using System;
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using System.Collections.Generic;
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using System.Linq;
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using System.Text;
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namespace Microsoft.Research.DynamicDataDisplay.Charts
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{
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internal sealed class TimeSpanToDoubleConversion
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{
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public TimeSpanToDoubleConversion(TimeSpan minSpan, TimeSpan maxSpan)
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: this(0, minSpan, 1, maxSpan)
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{ }
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public TimeSpanToDoubleConversion(double min, TimeSpan minSpan, double max, TimeSpan maxSpan)
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{
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this.min = min;
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this.length = max - min;
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this.ticksMin = minSpan.Ticks;
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this.ticksLength = maxSpan.Ticks - ticksMin;
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}
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private double min;
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private double length;
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private long ticksMin;
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private long ticksLength;
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internal TimeSpan FromDouble(double d)
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{
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double ratio = (d - min) / length;
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long ticks = (long)(ticksMin + ticksLength * ratio);
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ticks = MathHelper.Clamp(ticks, TimeSpan.MinValue.Ticks, TimeSpan.MaxValue.Ticks);
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return new TimeSpan(ticks);
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}
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internal double ToDouble(TimeSpan span)
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{
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double ratio = (span.Ticks - ticksMin) / (double)ticksLength;
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return min + ratio * length;
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}
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}
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}
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