/// Copies data from another preset. Assumes both presets are of the same kind.
public override void Copy(e2dPreset other)
{
e2dCurveVoronoiPreset preset = (e2dCurveVoronoiPreset)other;
peakType = preset.peakType;
frequencyPerUnit = preset.frequencyPerUnit;
peakRatio = preset.peakRatio;
peakWidth = preset.peakWidth;
usePeaks = preset.usePeaks;
}
public e2dVoronoi(List <Vector2> peaks, e2dVoronoiPeakType peakType, float peakWidth)
{
this.mPeaks = peaks;
this.mPeakType = peakType;
this.mPeakWidth = peakWidth;
this.mPeaks.Sort(new Vector2XComparer());
this.mValleys = new List <Vector2>(this.mPeaks.Count + 1);
this.mValleys.Add(new Vector2(0f, -this.mPeaks[0].x));
for (int i = 1; i < this.mPeaks.Count; i++)
{
float num = Mathf.Abs(this.mPeaks[i].x - this.mPeaks[i - 1].x);
float x = 0.5f * (this.mPeaks[i - 1].x + this.mPeaks[i].x);
this.mValleys.Add(new Vector2(x, -0.5f * num));
}
this.mValleys.Add(new Vector2(1f, -(1f - this.mPeaks[this.mPeaks.Count - 1].x)));
float num2 = float.MaxValue;
foreach (Vector2 vector in this.mValleys)
{
if (vector.y < num2)
{
num2 = vector.y;
}
}
for (int j = 0; j < this.mValleys.Count; j++)
{
Vector2 value = this.mValleys[j];
value.y = (value.y - num2) / -num2;
if (j == 0)
{
value.y *= this.mPeaks[j].y;
}
else if (j == this.mValleys.Count - 1)
{
value.y *= this.mPeaks[j - 1].y;
}
else
{
value.y *= Mathf.Min(this.mPeaks[j - 1].y, this.mPeaks[j].y);
}
if (this.mPeakType == e2dVoronoiPeakType.LINEAR)
{
if (this.mPeakWidth <= 0.5f)
{
value.y *= 2f * this.mPeakWidth;
}
else if (j > 0 && j < this.mValleys.Count - 1)
{
float t = 2f * (this.mPeakWidth - 0.5f);
value.y = Mathf.Lerp(value.y, Mathf.Min(this.mPeaks[j - 1].y, this.mPeaks[j].y), t);
}
}
this.mValleys[j] = value;
}
}
/// Copies data from another preset. Assumes both presets are of the same kind.
public override void Copy(e2dPreset other)
{
e2dCurveVoronoiPreset preset = (e2dCurveVoronoiPreset)other;
peakType = preset.peakType;
frequencyPerUnit = preset.frequencyPerUnit;
peakRatio = preset.peakRatio;
peakWidth = preset.peakWidth;
usePeaks = preset.usePeaks;
}
public float GetValue(float x)
{
int index = this.mPeaks.Count - 1;
int index2 = this.mPeaks.Count;
int i = 0;
while (i < this.mPeaks.Count)
{
if (x < this.mPeaks[i].x)
{
if (x < this.mValleys[i].x)
{
index = i - 1;
index2 = i;
break;
}
index = i;
index2 = i;
break;
}
else
{
i++;
}
}
float num = (x - this.mValleys[index2].x) / (this.mPeaks[index].x - this.mValleys[index2].x);
if (float.IsNaN(num))
{
num = 0f;
}
float result = 0f;
e2dVoronoiPeakType e2dVoronoiPeakType = this.mPeakType;
if (e2dVoronoiPeakType != e2dVoronoiPeakType.LINEAR)
{
if (e2dVoronoiPeakType != e2dVoronoiPeakType.SINE)
{
if (e2dVoronoiPeakType == e2dVoronoiPeakType.QUADRATIC)
{
num *= Mathf.Lerp(1f, e2dConstants.VORONOI_QUADRATIC_PEAK_WIDTH_RATIO, this.mPeakWidth);
if (num > 1f)
{
result = this.mPeaks[index].y;
}
else
{
float num2 = this.mPeaks[index].y - this.mValleys[index2].y;
result = this.mValleys[index2].y + num * num * num2;
}
}
}
else
{
num = 1f - Mathf.Pow(1f - num, Mathf.Lerp(e2dConstants.VORONOI_SIN_POWER_MIN, e2dConstants.VORONOI_SIN_POWER_MAX, this.mPeakWidth));
float f = -1.57079637f + num * 3.14159274f;
float num2 = 0.5f * (this.mPeaks[index].y - this.mValleys[index2].y);
float num3 = 1f;
result = this.mValleys[index2].y + (Mathf.Sin(f) + num3) * num2;
}
}
else
{
result = Mathf.Lerp(this.mValleys[index2].y, this.mPeaks[index].y, num);
}
return(result);
}
/// Constructs the noise function but doesn't generate anything.
/// Peak coordinates are assumed to be in [0, 1].
public e2dVoronoi(List <Vector2> peaks, e2dVoronoiPeakType peakType, float peakWidth)
{
mPeaks = peaks;
mPeakType = peakType;
mPeakWidth = peakWidth;
// sort the peaks along the X axis
mPeaks.Sort(new Vector2XComparer());
// compute valleys
mValleys = new List <Vector2>(mPeaks.Count + 1);
// left edge
mValleys.Add(new Vector2(0, -mPeaks[0].x));
// inside points
for (int i = 1; i < mPeaks.Count; i++)
{
float dist = Mathf.Abs(mPeaks[i].x - mPeaks[i - 1].x);
float x = 0.5f * (mPeaks[i - 1].x + mPeaks[i].x);
mValleys.Add(new Vector2(x, -0.5f * dist));
}
// right edge
mValleys.Add(new Vector2(1, -(1 - mPeaks[mPeaks.Count - 1].x)));
// normalize the valleys
float minValley = float.MaxValue;
foreach (Vector2 valley in mValleys)
{
if (valley.y < minValley)
{
minValley = valley.y;
}
}
for (int i = 0; i < mValleys.Count; i++)
{
Vector2 valley = mValleys[i];
// normalize into [0, 1]
valley.y = (valley.y - minValley) / -minValley;
// make the valley depend on the heights of the surrounding peaks
if (i == 0)
{
valley.y *= mPeaks[i].y;
}
else if (i == mValleys.Count - 1)
{
valley.y *= mPeaks[i - 1].y;
}
else
{
valley.y *= Mathf.Min(mPeaks[i - 1].y, mPeaks[i].y);
}
// in case we use linear interpolation we make the peaks wider by moving the valleys up
if (mPeakType == e2dVoronoiPeakType.LINEAR)
{
if (mPeakWidth <= 0.5f)
{
valley.y *= 2 * mPeakWidth;
}
else if (i > 0 && i < mValleys.Count - 1)
{
float delta = 2 * (mPeakWidth - 0.5f);
valley.y = Mathf.Lerp(valley.y, Mathf.Min(mPeaks[i - 1].y, mPeaks[i].y), delta);
}
}
mValleys[i] = valley;
}
}
