/// <summary>
/// from a givne percent, from 0 to 1,
/// get the index corresponding
/// </summary>
/// <typeparam name="T"></typeparam>
/// <param name="collection">list</param>
/// <param name="percent">from 0 to 1</param>
/// <returns>index found from percent</returns>
public static int GetIndexFromPercent <T>(this T[] collection, float percent)
{
float remapped = ExtMathf.Remap(percent, 0, 1, 0, collection.Length);
int index = (int)remapped;
return(index);
}
public static float RemapFromSeedDecimal(float min, float max, System.Random randomSeed)
{
float zeroToOneValue = (float)randomSeed.NextDouble();
float minToMaxValue = ExtMathf.Remap(zeroToOneValue, 0, 1, min, max);
return(minToMaxValue);
}
/// <summary>
/// here we have a min & max, we remap the random 0,1 value finded to this min&max
/// warning: we cast it into an int at the end
/// use:
/// System.Random seed = ExtRandom.Seedrandom("hash");
/// int randomInt = ExtRandom.RemapFromSeed(0, 50, seed);
/// </summary>
public static int RemapFromSeed(double min, double max, System.Random randomSeed)
{
double zeroToOneValue = randomSeed.NextDouble();
int minToMaxValue = (int)ExtMathf.Remap(zeroToOneValue, 0, 1, min, max);
return(minToMaxValue);
}
public static double RemapFromSeedDecimal(double min, double max, System.Random randomSeed)
{
double zeroToOneValue = randomSeed.NextDouble();
double minToMaxValue = ExtMathf.Remap(zeroToOneValue, 0, 1, min, max);
return(minToMaxValue);
}
public static bool Is3dPointInside2dRectInScreenSpace(Camera camera, Rect rect, Vector3 point)
{
Vector2 point2d = camera.WorldToScreenPoint(point);
bool xOk = point2d.x >= rect.x && point2d.x <= rect.x + rect.width;
float yInverse = ExtMathf.MirrorFromInterval(point2d.y, 0, camera.pixelHeight);
bool yOk = yInverse >= rect.y && yInverse <= rect.y + rect.height;
bool isInside = xOk && yOk;
return(isInside);
}