Radial Tiling Node¶
The Radial Tiling Node provides the ability to divide a 2D cartesian input coordinate system into as many radial segments as specified by the Sides input. Each segment has its own affinely transformed segment coordinate system, which can be used to tile textures in a radially symmetric manner.
Inputs¶
- Vector
Vector of the input system that is to be divided into radial segments.
- Sides
Number of radial segments to divide the input coordinate system into. A non-integer value results in an irregular segment that is smaller than the regular segments.
- Roundness
Roundness of the segment coordinate systems.
Properties¶
- Normalize
If enabled, the X-coordinates of the Segment Coordinates output are remapped into a 0.0 to 1.0 range and a constant value of 1.0 is added to the Y-coordinates which makes the output range non-negative.
Outputs¶
- Segment Coordinates
Segment coordinates for texture mapping within each radial segment.
- Segment ID
Unique ID for every radial segment startiing at 0 and increasing counterclockwise by 1 for every for each segment.
- Segment Width
Relative width of each radial segment. May be used to scale textures to fit into each segment.
- Segment Rotation
Counterclockwise rotation of each segment coordinate system. May be used to align the rotation of the textures of each segment.
Examples¶
The coordinates provided by the Segment Coordinates output can be used to tile textures in a radially symmetric manner, which is demonstrated by radially tiling a heart texture in the following examples.
Node tree for the shader above.¶
With an increasing number of segments the relative width of each segment decreases, eventually causing the textures to overlap and clip, as seen on the example with Sides set to 6.5. Apart from that, the non-integer Sides value in that example results in even more significant clipping due to the irregular segment that is smaller than the regular segments. To avoid this clipping, the Segment Width output can be used to scale the textures according to the relative width of each segment.
Node tree for the shader above. The value 0.725 is an arbitrarily chosen texture scaling value and can be tweaked to change the size of the textures.¶
By default the segment coordinate systems are rotated to have their Y-axes intersect with the origin. The Segment Rotation output can be used to align the rotation of the segment coordinate systems along a global direction instead.
Node tree for the shader above. The value -1.571 is an arbitrarily chosen texture rotation value and can be tweaked to change the rotation of the textures.¶
When working with textures that span the entire UV space there is always the issue of visible seams along segment borders even if the original texture is seamless. The Normalize option eliminates these visible seams by ensuring that the X-coordinates always only cover the entire 0 to range 1. This also introduces a zoom effect, which depending on whether or not it’s desirable may need to be mitigated using additional nodes.
For some textures it may be useful to create a more rounded appearance in the vicinity of segment borders, which can be done by setting the roundness of the segment coordinate systems using the Roundness input.
