public Spring AddSpring(int start, int duration, float springSize, float preSpringSize)
{
Version++;
Spring spring;
if (!Springs.ContainsKey(start))
{
spring = new Spring();
spring.TimePosition = start;
spring.SmallestDuration = duration;
spring.LongestDuration = duration;
spring.SpringWidth = springSize;
spring.PreSpringWidth = preSpringSize;
Springs[start] = spring;
}
else
{
spring = Springs[start];
if (spring.SpringWidth < springSize)
{
spring.SpringWidth = springSize;
}
if (spring.PreSpringWidth < preSpringSize)
{
spring.PreSpringWidth = preSpringSize;
}
if (duration < spring.SmallestDuration)
{
spring.SmallestDuration = duration;
}
if (duration > spring.LongestDuration)
{
spring.LongestDuration = duration;
}
}
if (duration < SmallestDuration)
{
SmallestDuration = duration;
}
return(spring);
}
private float CalculateSpringConstant(Spring spring, float duration)
{
float minDuration = spring.SmallestDuration;
if (spring.SmallestDuration == 0)
{
minDuration = duration;
}
var phi = 1 + 0.6f * Std.Log2(duration / (float)MinDuration);
return (minDuration / duration) * 1 / (phi * MinDurationWidth);
}
public Spring AddSpring(int start, int duration, float springSize, float preSpringSize)
{
Spring spring;
if (!Springs.ContainsKey(start))
{
spring = new Spring();
spring.TimePosition = start;
spring.SmallestDuration = duration;
spring.LongestDuration = duration;
spring.SpringWidth = springSize;
spring.PreSpringWidth = preSpringSize;
Springs[start] = spring;
}
else
{
spring = Springs[start];
if (spring.SpringWidth < springSize)
{
spring.SpringWidth = springSize;
}
if (spring.PreSpringWidth < preSpringSize)
{
spring.PreSpringWidth = preSpringSize;
}
if (duration < spring.SmallestDuration)
{
spring.SmallestDuration = duration;
}
if (duration > spring.LongestDuration)
{
spring.LongestDuration = duration;
}
}
if (duration < SmallestDuration)
{
SmallestDuration = duration;
}
return spring;
}
public Spring AddSpring(int start, int duration, float preSpringSize, float postSpringSize)
{
Version++;
Spring spring;
if (!Springs.ContainsKey(start))
{
spring = new Spring();
spring.TimePosition = start;
spring.AllDurations.Add(duration);
// check in the previous spring for the shortest duration that overlaps with this spring
// Gourlay defines that we need the smallest note duration that either starts **or continues** on the current spring.
if (_timeSortedSprings.Count > 0)
{
int smallestDuration = duration;
var previousSpring = _timeSortedSprings[_timeSortedSprings.Count - 1];
foreach (var prevDuration in previousSpring.AllDurations)
{
var end = previousSpring.TimePosition + prevDuration;
if (end >= start && prevDuration < smallestDuration)
{
smallestDuration = prevDuration;
}
}
}
spring.LongestDuration = duration;
spring.PostSpringWidth = postSpringSize;
spring.PreSpringWidth = preSpringSize;
Springs[start] = spring;
var timeSorted = _timeSortedSprings;
var insertPos = timeSorted.Count - 1;
while (insertPos > 0 && timeSorted[insertPos].TimePosition > start)
{
insertPos--;
}
_timeSortedSprings.InsertAt(insertPos + 1, spring);
}
else
{
spring = Springs[start];
if (spring.PostSpringWidth < postSpringSize)
{
spring.PostSpringWidth = postSpringSize;
}
if (spring.PreSpringWidth < preSpringSize)
{
spring.PreSpringWidth = preSpringSize;
}
if (duration < spring.SmallestDuration)
{
spring.SmallestDuration = duration;
}
if (duration > spring.LongestDuration)
{
spring.LongestDuration = duration;
}
spring.AllDurations.Add(duration);
}
if (_minTime > start)
{
_minTime = start;
}
return(spring);
}