Method faceforward
faceforward(float2, float2, float2)
Conditionally flips a vector n if two vectors i and ng are pointing in the same direction. Returns n if dot(i, ng) < 0, -n otherwise.
Declaration
public static float2 faceforward(float2 n, float2 i, float2 ng)Parameters
| Type | Name | Description |
|---|---|---|
| float2 | n | Vector to conditionally flip. |
| float2 | i | First vector in direction comparison. |
| float2 | ng | Second vector in direction comparison. |
Returns
| Type | Description |
|---|---|
| float2 | -n if i and ng point in the same direction; otherwise return n unchanged. |
faceforward(float3, float3, float3)
Conditionally flips a vector n if two vectors i and ng are pointing in the same direction. Returns n if dot(i, ng) < 0, -n otherwise.
Declaration
public static float3 faceforward(float3 n, float3 i, float3 ng)Parameters
| Type | Name | Description |
|---|---|---|
| float3 | n | Vector to conditionally flip. |
| float3 | i | First vector in direction comparison. |
| float3 | ng | Second vector in direction comparison. |
Returns
| Type | Description |
|---|---|
| float3 | -n if i and ng point in the same direction; otherwise return n unchanged. |
faceforward(float4, float4, float4)
Conditionally flips a vector n if two vectors i and ng are pointing in the same direction. Returns n if dot(i, ng) < 0, -n otherwise.
Declaration
public static float4 faceforward(float4 n, float4 i, float4 ng)Parameters
| Type | Name | Description |
|---|---|---|
| float4 | n | Vector to conditionally flip. |
| float4 | i | First vector in direction comparison. |
| float4 | ng | Second vector in direction comparison. |
Returns
| Type | Description |
|---|---|
| float4 | -n if i and ng point in the same direction; otherwise return n unchanged. |
faceforward(double2, double2, double2)
Conditionally flips a vector n if two vectors i and ng are pointing in the same direction. Returns n if dot(i, ng) < 0, -n otherwise.
Declaration
public static double2 faceforward(double2 n, double2 i, double2 ng)Parameters
| Type | Name | Description |
|---|---|---|
| double2 | n | Vector to conditionally flip. |
| double2 | i | First vector in direction comparison. |
| double2 | ng | Second vector in direction comparison. |
Returns
| Type | Description |
|---|---|
| double2 | -n if i and ng point in the same direction; otherwise return n unchanged. |
faceforward(double3, double3, double3)
Conditionally flips a vector n if two vectors i and ng are pointing in the same direction. Returns n if dot(i, ng) < 0, -n otherwise.
Declaration
public static double3 faceforward(double3 n, double3 i, double3 ng)Parameters
| Type | Name | Description |
|---|---|---|
| double3 | n | Vector to conditionally flip. |
| double3 | i | First vector in direction comparison. |
| double3 | ng | Second vector in direction comparison. |
Returns
| Type | Description |
|---|---|
| double3 | -n if i and ng point in the same direction; otherwise return n unchanged. |
faceforward(double4, double4, double4)
Conditionally flips a vector n if two vectors i and ng are pointing in the same direction. Returns n if dot(i, ng) < 0, -n otherwise.
Declaration
public static double4 faceforward(double4 n, double4 i, double4 ng)Parameters
| Type | Name | Description |
|---|---|---|
| double4 | n | Vector to conditionally flip. |
| double4 | i | First vector in direction comparison. |
| double4 | ng | Second vector in direction comparison. |
Returns
| Type | Description |
|---|---|
| double4 | -n if i and ng point in the same direction; otherwise return n unchanged. |