# Triplanar Projection Samples data from three images and projects each along its respective coordinate axis and blends them by geometric normal. ## Parameter Types **Triplanar Projection (float):** |Input |Type | |-------------|---------| |`File X` |AssetPath| |`File Y` |AssetPath| |`File Z` |AssetPath| |`Default` |Float | |`Position` |Vector3f | |`Normal` |Vector3f | |`Filter Type`|String | |Output|Type | |------|-----| |`Out` |Float| **Triplanar Projection (vector2f):** |Input |Type | |-------------|---------| |`File X` |AssetPath| |`File Y` |AssetPath| |`File Z` |AssetPath| |`Default` |Vector2f | |`Position` |Vector3f | |`Normal` |Vector3f | |`Filter Type`|String | |Output|Type | |------|--------| |`Out` |Vector2f| **Triplanar Projection (color3f):** |Input |Type | |-------------|-------------| |`File X` |AssetPath | |`File Y` |AssetPath | |`File Z` |AssetPath | |`Default` |Color3| |`Position` |Vector3f | |`Normal` |Vector3f | |`Filter Type`|String | |Output|Type | |------|-------------| |`Out` |Color3| **Triplanar Projection (vector3f):** |Input |Type | |-------------|---------| |`File X` |AssetPath| |`File Y` |AssetPath| |`File Z` |AssetPath| |`Default` |Vector3f | |`Position` |Vector3f | |`Normal` |Vector3f | |`Filter Type`|String | |Output|Type | |------|--------| |`Out` |Vector3f| **Triplanar Projection (color4f):** |Input |Type | |-------------|-------------| |`File X` |AssetPath | |`File Y` |AssetPath | |`File Z` |AssetPath | |`Default` |Color4| |`Position` |Vector3f | |`Normal` |Vector3f | |`Filter Type`|String | |Output|Type | |------|-------------| |`Out` |Color4| **Triplanar Projection (vector4f):** |Input |Type | |-------------|---------| |`File X` |AssetPath| |`File Y` |AssetPath| |`File Z` |AssetPath| |`Default` |Vector4f | |`Position` |Vector3f | |`Normal` |Vector3f | |`Filter Type`|String | |Output|Type | |------|--------| |`Out` |Vector4f| ## Parameter description - `File X`: The image file to project from the positive X direction toward the origin. - `File Y`: The image file to project from the positive Y direction toward the origin. - `File Z`: The image file to project from the positive Z direction toward the origin. - `Default`: The default value the node uses if any of the ​file​ references fail to resolve. - `Position`: The 3D coordinates at which the node reads data for mapping the texture onto a surface. The default uses the current 3D object-space coordinates. - `Normal`: The 3D normal vector the node uses for blending; the default is the current object-space surface normal. - `Filter Type`: The type of texture filtering the node uses; the default is `linear`. ## Discussion Use the `Triplanar Projection` node to blend three different images together based on the vector normal of each point on the object. Areas of the object that are parallel with a coordinate axis cause the node to fully show the respective image. Areas of the object between the coordinate axis cause the node to render a mix of the images based on how close the normal is to each of the axis. The closer the normal is to the normal of a coordinate axis the strong the respective image is in the blend. Below is an example of a simple node graph that uses the `Triplanar Projection` node to blend the same grass image in the X and Y directions, and a tile texture in the Z direction:  Below, the resulting texture applies to a sphere:  --- Copyright © 2026 Apple Inc. All rights reserved. | [Terms of Use](https://www.apple.com/legal/internet-services/terms/site.html) | [Privacy Policy](https://www.apple.com/privacy/privacy-policy)