2024-09-20 20:30:10 +02:00

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Transform Node

Description

Returns the result of transforming the input value (In) from one coordinate space to another. Select dropdown options on the node to define which spaces to transform from and to.

Ports

Name	Direction	Type	Description
In	Input	Vector 3	Input value
Out	Output	Vector 3	Output value

Controls

Name	Type	Options	Description
From	Dropdown	Object, View, World, Tangent, Absolute World, Screen	Select the space to convert from.
To	Dropdown	Object, View, World, Tangent, Absolute World, Screen	Select the space to convert to.
Type	Dropdown	Position, Direction, Normal	Select how you want to handle the conversion.

Node Settings Controls

The following control appears on the Node Settings tab of the Graph Inspector when you select the Direction or Normal conversion types for the Transform Node. The Normalize Output setting helps to improve performance as you can disable it if the output is already normalized, or if you don't need the output to remain normalized.

Name	Type	Description
Normalize Output	Checkbox	Reduces the length of the output vector to 1.

World and Absolute World

Use the World and Absolute World space options to transform the coordinate space of position values. The World space option uses the Scriptable Render Pipeline default world space to convert position values. The Absolute World space option uses absolute world space to convert position values in all Scriptable Render Pipelines.

If you use the Transform Node to convert coordinate spaces that aren't for position values, Unity recommends that you use the World space option. Using Absolute World on values that don't represent position might result in unexpected behavior.

Conversion type

Select the Position type to apply translation to the transformation. Select Direction if the input doesn't describe a surface normal (the direction a surface faces). Select Normal if the input describes a surface normal (the direction the surface faces).

Generated Code Example

The following example code represents one possible outcome of this node per Base mode.

World > World

float3 _Transform_Out = In;

World > Object

float3 _Transform_Out = TransformWorldToObject(In);

World > Tangent

float3x3 tangentTransform_World = float3x3(IN.WorldSpaceTangent, IN.WorldSpaceBiTangent, IN.WorldSpaceNormal);
float3 _Transform_Out = TransformWorldToTangent(In, tangentTransform_World);

World > View

float3 _Transform_Out = TransformWorldToView(In);

World > Absolute World

float3 _Transform_Out = GetAbsolutePositionWS(In);

World > Screen

float4 hclipPosition = TransformWorldToHClipDir(In);
float3 screenPos = hclipPosition.xyz / hclipPosition.w;
float3 _Transform_Out = float3(screenPos.xy * 0.5 + 0.5, screenPos.z);

Object > World

float3 _Transform_Out = TransformObjectToWorld(In);

Object > Object

float3 _Transform_Out = In;

Object > Tangent

float3x3 tangentTransform_World = float3x3(IN.WorldSpaceTangent, IN.WorldSpaceBiTangent, IN.WorldSpaceNormal);
float3 _Transform_Out = TransformWorldToTangent(TransformObjectToWorld(In), tangentTransform_World);

Object > View

float3 _Transform_Out = TransformWorldToView(TransformObjectToWorld(In));

Object > Absolute World

float3 _Transform_Out = GetAbsolutePositionWS(TransformObjectToWorld(In));

Object > Screen

float4 hclipPosition = TransformObjectToHClip(In);
float3 screenPos = hclipPosition.xyz / hclipPosition.w;
float3 _Transform_Out = float3(screenPos.xy * 0.5 + 0.5, screenPos.z);

Tangent > World

float3x3 transposeTangent = transpose(float3x3(IN.WorldSpaceTangent, IN.WorldSpaceBiTangent, IN.WorldSpaceNormal));
float3 _Transform_Out = mul(In, transposeTangent).xyz;

Tangent > Object

float3x3 transposeTangent = transpose(float3x3(IN.WorldSpaceTangent, IN.WorldSpaceBiTangent, IN.WorldSpaceNormal));
float3 _Transform_Out = TransformWorldToObject(mul(In, transposeTangent).xyz);

Tangent > Tangent

float3 _Transform_Out = In;

Tangent > View

float3x3 transposeTangent = transpose(float3x3(IN.WorldSpaceTangent, IN.WorldSpaceBiTangent, IN.WorldSpaceNormal));
float3 _Transform_Out = TransformWorldToView(mul(In, transposeTangent).xyz);

Tangent > Absolute World

float3x3 transposeTangent = transpose(float3x3(IN.WorldSpaceTangent, IN.WorldSpaceBiTangent, IN.WorldSpaceNormal));
float3 _Transform_Out = GetAbsolutePositionWS(mul(In, transposeTangent)).xyz;

Tangent > Screen

float3x3 transposeTangent = transpose(float3x3(IN.WorldSpaceTangent, IN.WorldSpaceBiTangent, IN.WorldSpaceNormal));
float4 hclipPosition = TransformWorldToHClipDir(mul(In, transposeTangent).xyz);
float3 screenPos = hclipPosition.xyz / hclipPosition.w;
float3 _Transform_Out = float3(screenPos.xy * 0.5 + 0.5, screenPos.z);

View > World

float3 _Transform_Out = mul(UNITY_MATRIX_I_V, float4(In, 1)).xyz;

View > Object

float3 _Transform_Out = TransformWorldToObject(mul(UNITY_MATRIX_I_V, float4(In, 1) ).xyz);

View > Tangent

float3x3 tangentTransform_World = float3x3(IN.WorldSpaceTangent, IN.WorldSpaceBiTangent, IN.WorldSpaceNormal);
float3 _Transform_Out = TransformWorldToTangent(mul(UNITY_MATRIX_I_V, float4(In, 1) ).xyz, tangentTransform_World);

View > View

float3 _Transform_Out = In;

View > Absolute World

float3 _Transform_Out = GetAbsolutePositionWS(mul(UNITY_MATRIX_I_V, float4(In, 1))).xyz;

View > Screen

float4 hclipPosition = TransformWViewToHClip(In);
float3 screenPos = hclipPosition.xyz / hclipPosition.w;
float3 _Transform_Out = float3(screenPos.xy * 0.5 + 0.5, screenPos.z);

Absolute World > World

float3 _Transform_Out = GetCameraRelativePositionWS(In);

Absolute World > Object

float3 _Transform_Out = TransformWorldToObject(In);

Absolute World > Object (in the High Definition Render Pipeline)

float3 _Transform_Out = TransformWorldToObject(GetCameraRelativePositionWS(In));

Absolute World > Tangent

float3x3 tangentTransform_World = float3x3(IN.WorldSpaceTangent, IN.WorldSpaceBiTangent, IN.WorldSpaceNormal);
float3 _Transform_Out = TransformWorldToTangent(In, tangentTransform_World);

Absolute World > View

float3 _Transform_Out = GetCameraRelativePositionWS(In)

Absolute World > Absolute World

float3 _Transform_Out = In;

Absolute World > Screen

float4 hclipPosition = TransformWorldToHClip(GetCameraRelativePositionWS(In));
float3 screenPos = hclipPosition.xyz / hclipPosition.w;
float3 _Transform_Out = float3(screenPos.xy * 0.5 + 0.5, screenPos.z);

Screen > World

float3 _Transform_Out = ComputeWorldSpacePosition(In.xy, In.z, UNITY_MATRIX_I_VP);

Screen > Object

float3 worldPos = ComputeWorldSpacePosition(In.xy, In.z, UNITY_MATRIX_I_VP);
float3 _Transform_Out = TransformWorldToObject(worldPos);

Screen > Tangent

float3 worldPos = ComputeWorldSpacePosition(In.xy, In.z, UNITY_MATRIX_I_VP);
float3x3 tangentTransform_World = float3x3(IN.WorldSpaceTangent, IN.WorldSpaceBiTangent, IN.WorldSpaceNormal);
float3 _Transform_Out = TransformWorldToTangent(worldPos, tangentTransform_World);

Screen > View

float4 positionCS  = ComputeClipSpacePosition(In.xy, In.z);
float4 result = mul(UNITY_MATRIX_I_V, positionCS);
float3 _Transform_Out = result.xyz / result.w;

Screen > Absolute World

float3 _Transform_Out = GetAbsolutePositionWS(ComputeWorldSpacePosition(In.xy, In.z, UNITY_MATRIX_I_VP));

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