 float4[Class Summary] |
 x |
| y |
| z |
| w |
| zero[static][const] |
| one[static][const] |
| unitX[static][const] |
| unitY[static][const] |
| unitZ[static][const] |
| unitW[static][const] |
| nan[static][const] |
| inf[static][const] |
 ctor (+8 overloads) |
| ptr() (+1 overload) |
 operator[](index) (+1 overload) |
| At(index) (+1 overload) |
| operators +,-,*,/(v)[const] (+1 overload) |
| operators +=,-=,*=,/=(v) |
| Add/Sub/Mul/Div(v)[const] (+1 overload) |
| xy()[const] |
| xyz()[const] |
| Float3Part() (+1 overload) |
| Swizzled(i,j,k,l)[const] (+2 overloads) |
| SetFromScalar(scalar) (+1 overload) |
| SetFromSphericalCoordinates(...) (+2 overloads) |
| ToSphericalCoordinates()[const] |
| ToSphericalCoordinatesNormalized()[const] |
| Set(x,y,z,w) |
| LengthSq3()[const] |
| Length3()[const] |
| LengthSq4()[const] |
| LengthSq()[const] |
| Length4()[const] |
| Length()[const] |
| Normalize3() |
| Normalize4() |
| Normalize() |
| Normalized3()[const] |
| Normalized4()[const] |
| Normalized()[const] |
| NormalizeW() |
| IsWZeroOrOne(epsilon)[const] |
| IsZero3(epsilonSq)[const] |
| IsZero4(epsilonSq)[const] |
| IsZero(epsilonSq)[const] |
| IsNormalized3(epsilonSq)[const] |
| IsNormalized4(epsilonSq)[const] |
| IsNormalized(epsilonSq)[const] |
| Scale3(scalar) |
| ScaleToLength3(newLength) |
| ScaleToLength(newLength) |
| ScaledToLength3(newLength)[const] |
| ScaledToLength(newLength)[const] |
| IsFinite()[const] |
| IsPerpendicular3(other,epsilonSq)[const] |
| IsPerpendicular(other,epsilonSq)[const] |
| ToString()[const] |
| SerializeToString()[const] |
| SerializeToCodeString()[const] |
| SumOfElements()[const] |
| ProductOfElements()[const] |
| AverageOfElements()[const] |
| MinElement()[const] |
| MinElementIndex()[const] |
| MaxElement()[const] |
| MaxElementIndex()[const] |
| Abs()[const] |
| Neg3()[const] |
| Neg4()[const] |
| Recip3()[const] |
| Recip4()[const] |
| RecipFast4()[const] |
| Min(ceil)[const] (+1 overload) |
| Max(floor)[const] (+1 overload) |
| Clamp(floor,ceil)[const] (+1 overload) |
| Clamp01()[const] |
| Lerp(b,t)[const] |
| Distance3Sq(rhs)[const] |
| Distance3(rhs)[const] |
| Distance4Sq(rhs)[const] |
| DistanceSq(rhs)[const] |
| Distance4(rhs)[const] |
| Distance(rhs)[const] |
| Dot3(rhs)[const] (+1 overload) |
| Dot4(rhs)[const] |
| Dot(rhs)[const] |
| Cross3(rhs)[const] (+1 overload) |
| Cross(rhs)[const] |
| OuterProduct(rhs)[const] |
| Perpendicular3(hint,hint2)[const] |
| Perpendicular(hint,hint2)[const] |
| AnotherPerpendicular3(hint,hint2)[const] |
| AnotherPerpendicular(hint,hint2)[const] |
| RandomPerpendicular(rng)[const] |
| Reflect3(normal)[const] |
| Reflect(normal)[const] |
| Refract(...)[const] |
| AngleBetween3(other)[const] |
| AngleBetweenNorm3(normalizedVector)[const] |
| AngleBetween4(other)[const] |
| AngleBetweenNorm4(normalizedVector)[const] |
| ProjectTo3(target)[const] |
| ProjectTo(target)[const] |
| ProjectToNorm3(target)[const] |
| ProjectToNorm(target)[const] |
| Equals(other,epsilon)[const] (+1 overload) |
| BitEquals(other)[const] |
| FromScalar(scalar)[static] (+1 overload) |
| FromSphericalCoordinates(...)[static] (+2 overloads) |
| Orthogonalize(a,b)[static] (+1 overload) |
| AreOrthogonal(a,b,epsilon)[static] (+1 overload) |
| AreCollinear(p1,p2,p3,epsilon)[static] |
| Orthonormalize(a,b)[static] (+1 overload) |
| AreOrthonormal(a,b,epsilon)[static] (+1 overload) |
| FromString(str,outEndStr)[static] (+1 overload) |
| Lerp(a,b,t)[static] |
| RandomDir(lcg,length)[static] |
| RandomSphere(lcg,center,radius)[static] |
| RandomBox(...)[static] (+2 overloads) |
| RandomGeneral(...)[static] |
float4::LengthSq3
Syntax
float float4::LengthSq3() const; [8 lines of code]Computes the squared length of the (x, y, z) part of this vector.
Calling this function is faster than calling Length3(), since this function avoids computing a square root. If you only need to compare lengths to each other, but are not interested in the actual length values, you can compare by using LengthSq3(), instead of Length3(), since Sqrt() is an order-preserving (monotonous and non-decreasing) function.
Note
This function ignores the w component of this vector.
Return Value
x*x + y*y + z*z.