public void Scale(FVec4 scale)
{
this.x *= scale.x;
this.y *= scale.y;
this.z *= scale.z;
this.w *= scale.w;
}
public bool AproxEqualsBox(FVec4 vector, Fix64 tolerance)
{
return
((Fix64.Abs(this.x - vector.x) <= tolerance) &&
(Fix64.Abs(this.y - vector.y) <= tolerance) &&
(Fix64.Abs(this.z - vector.z) <= tolerance) &&
(Fix64.Abs(this.w - vector.w) <= tolerance));
}
public static FVec4 NormalizeSafe(FVec4 v)
{
Fix64 dis = Fix64.Sqrt(v.x * v.x + v.y * v.y + v.z * v.z + v.w * v.w);
if (dis == Fix64.Zero)
{
return(new FVec4());
}
return(v * (Fix64.One / dis));
}
public static FVec4 ClampMagnitude(FVec4 v, Fix64 maxLength)
{
FVec4 nor = v;
Fix64 sqrMagnitude = nor.SqrMagnitude();
if (sqrMagnitude > (maxLength * maxLength))
{
nor = nor * (maxLength / Fix64.Sqrt(sqrMagnitude));
}
return(nor);
}
public FVec4 UnProject(FMat4 viewProjInverse, Fix64 viewX, Fix64 viewY, Fix64 viewWidth, Fix64 viewHeight)
{
FVec4 result = this;
result.x = (result.x - viewX) / viewWidth;
result.y = (result.y - viewY) / viewHeight;
result = result * Fix64.Two - Fix64.One;
result = result.Transform(viewProjInverse);
Fix64 wDelta = Fix64.One / result.w;
result.x *= wDelta;
result.y *= wDelta;
result.z *= wDelta;
return(result);
}
public FVec4 Project(FMat4 projectionMatrix, FMat4 viewMatrix, Fix64 viewX, Fix64 viewY, Fix64 viewWidth, Fix64 viewHeight)
{
FVec4 result = this;
result = result.Multiply(viewMatrix);
result = result.Multiply(projectionMatrix);
Fix64 wDelta = Fix64.One / result.w;
result.x *= wDelta;
result.y *= wDelta;
result.z *= wDelta;
result.x = result.x * Fix64.Half + Fix64.Half;
result.y = result.y * Fix64.Half + Fix64.Half;
result.z = result.z * Fix64.Half + Fix64.Half;
result.x = result.x * viewWidth + viewX;
result.y = result.y * viewHeight + viewY;
return(result);
}
public static FVec4 Lerp(FVec4 from, FVec4 to, Fix64 t)
{
return(t <= Fix64.Zero ? @from : (t >= Fix64.One ? to : LerpUnclamped(@from, to, t)));
}
public static FVec4 LerpUnclamped(FVec4 from, FVec4 to, Fix64 t)
{
return(new FVec4(from.x + (to.x - from.x) * t, from.y + (to.y - from.y) * t, from.z + (to.z - from.z) * t, from.w + (to.w - from.w) * t));
}
public Fix64 DistanceSquared(FVec4 vector)
{
return((vector - this).Dot());
}
public static FVec4 Floor(FVec4 v)
{
return(new FVec4(Fix64.Floor(v.x), Fix64.Floor(v.y), Fix64.Floor(v.z),
Fix64.Floor(v.w)));
}
public static FVec4 Abs(FVec4 v)
{
return(new FVec4(Fix64.Abs(v.x), Fix64.Abs(v.y), Fix64.Abs(v.z), Fix64.Abs(v.w)));
}
public static Fix64 DistanceSquared(FVec4 v0, FVec4 v1)
{
return((v1 - v0).Dot());
}
public static Fix64 Distance(FVec4 v0, FVec4 v1)
{
return((v1 - v0).Magnitude());
}
public bool ApproxEquals(FVec4 vector, Fix64 tolerance)
{
return(this.Distance(vector) <= tolerance);
}
public Fix64 Dot(FVec4 vector)
{
return(this.x * vector.x + this.y * vector.y + this.z * vector.z + this.w * vector.w);
}
public static FVec4 Min(FVec4 v, Fix64 value)
{
return(new FVec4(Fix64.Min(v.x, value), Fix64.Min(v.y, value), Fix64.Min(v.z, value),
Fix64.Min(v.w, value)));
}
public static FVec4 Min(FVec4 v, FVec4 values)
{
return(new FVec4(Fix64.Min(v.x, values.x), Fix64.Min(v.y, values.y), Fix64.Min(v.z, values.z),
Fix64.Min(v.w, values.w)));
}
public static FVec4 Normalize(FVec4 v)
{
return(v * (Fix64.One / Fix64.Sqrt(v.x * v.x + v.y * v.y + v.z * v.z + v.w * v.w)));
}
public static FVec4 Pow(FVec4 v, Fix64 power)
{
return(new FVec4(Fix64.Pow(v.x, power), Fix64.Pow(v.y, power),
Fix64.Pow(v.z, power), Fix64.Pow(v.w, power)));
}
public static Fix64 Dot(FVec4 v0, FVec4 v1)
{
return(v0.x * v1.x + v0.y * v1.y + v0.z * v1.z + v0.w * v1.w);
}
public static FVec4 Round(FVec4 v)
{
return(new FVec4(Fix64.Round(v.x), Fix64.Round(v.y), Fix64.Round(v.z),
Fix64.Round(v.w)));
}
public Fix64 Distance(FVec4 vector)
{
return((vector - this).Magnitude());
}