public Vector3F GenerateValue(Random random)
{
switch (Type)
{
case Component_ParticleEmitter.AnglesProperty.TypeEnum.Constant:
return(Constant);
case Component_ParticleEmitter.AnglesProperty.TypeEnum.Range:
return(Vector3F.Lerp(Range.Minimum, Range.Maximum, random.NextFloat()));
case Component_ParticleEmitter.AnglesProperty.TypeEnum.Curve:
{
Vector3F result = Vector3F.Zero;
if (CurveX != null)
{
var maxValue = CurveX.Points[CurveX.Points.Count - 1].Time;
result.X = CurveX.CalculateValueByTime(random.Next(maxValue));
}
if (CurveY != null)
{
var maxValue = CurveY.Points[CurveY.Points.Count - 1].Time;
result.Y = CurveY.CalculateValueByTime(random.Next(maxValue));
}
if (CurveZ != null)
{
var maxValue = CurveZ.Points[CurveZ.Points.Count - 1].Time;
result.Z = CurveZ.CalculateValueByTime(random.Next(maxValue));
}
return(result);
}
}
return(Vector3F.Zero);
}
public void Calculate(float lifetime, float time, out Vector3F result)
{
switch (Type)
{
case Component_ParticleVelocityByTime.TypeEnum.Constant:
result = Constant;
break;
case Component_ParticleVelocityByTime.TypeEnum.Range:
Vector3F.Lerp(ref Range.Minimum, ref Range.Maximum, MathEx.Saturate(time / lifetime), out result);
break;
case Component_ParticleVelocityByTime.TypeEnum.Curve:
result.X = CurveX != null?CurveX.CalculateValueByTime(time) : 0;
result.Y = CurveY != null?CurveY.CalculateValueByTime(time) : 0;
result.Z = CurveZ != null?CurveZ.CalculateValueByTime(time) : 0;
break;
default:
result = Vector3F.Zero;
break;
}
}