Atlas Scatter

In: Material Filters/Scan Processing

Complex

Description

Extract elements from an Atlas and scatter them on a background. Atlas inputs are full materials, consisting of individual elements arranged and packed on a single texture sheet. This node splits them up (using an internal Atlas Splitter process) and scatters them, similar to Shape Splatter. Atlas Scatter requires at minimum an Opacity map input , and a Height map input for the Atlas, to function.

Inputs & Parameters

Parameters

• Atlas Input Resolution: Resolution, 1 to 12
  Manually set the resolution of the full input atlas, to ensure a good performance vs quality ratio.
• X Amount: 1 - 64
  Amount of X repetitions of the pattern.
• Y Amount: 1 - 64
  Amount of Y repetitions of the pattern.
• Pattern
  
  • Pattern Range: 0 - 10
    Defines the range of patterns to be scattered. If set to 0, all patterns will be used.
  • Pattern Distribution Mode: Random, Pattern Index, Line Index, Column Index
    Defines the order in which atlas elements are used.
  • Pattern Distribution Map Multiplier: 0.0 - 1.0
    Select shape pattern in function of the input image grayscale value.
  • Pattern Rotation: 0, 90, 180, 270
    Applies a fixed rotation to each atlas element, by the selected amount of degrees.
  • Pattern Rotation Random: 0.0 - 1.0
    Applies a random rotation to the set portion of atlas elements.
  • Atlas Shape Detection Precision: Simple or small shapes, Complex or big shapes, No failure mode
    Sets the precision with which shapes are detected. The greater the accuracy, the greater the impact on performance.
  • Downscale Atlas Opacity (faster detection): -4 - 0
    Lets you control the downscale ratio of the input atlas opacity map, which is used for shape detection. A lower resolution improves performance at the cost of accuracy.
  • Ignore Shape Smaller Than: 0.0 - 1.0
    Sets the minimum size a shape has to be to be detected, expressed as ratio of the overall image
• Size
  
  • Scale: 0.0 - 5.0
    Sets the relative scale of scattered shapes.
  • Scale Random: 0.0 - 1.0
    Defines the multiplier for applying random scaling to each scattered shape.
  • Scale No Overlap: 0.0 - 1.0
    Reduces the shape scale so that they don't overlap.
  • Scale Map Multiplier: 0.0 - 1.0
    Multiplies the shape scale in function of the input image grayscale value.
  • Size: 0.0 - 1.0
    Sets the relative scale of scattered shapes by length (X) and width (Y).
  • Size Ratio from Bg Slope: 0.0 - 1.0
    Modifies the shape size ratio in function of the background height slope.
  • Preserve Aspect Ratio: 0.0 - 1.0
    Determines by which amount the original proportions of the scattered shapes should be preserved, instead of using their grid cell ratio – i.e. the ratio of the X Amount and Y Amount values.
• Position
  
  • Position Random: 0.0 - 2.0
    A multiplier for moving each shape in a random direction from their grid starting point.
  • Random Distribution: Gaussian, Uniform
    Switches from a Gaussian distribution to a Uniform Distribution for the random position. The Gaussian distribution will produce a more organic result compared to the Uniform distribution.
  • Vector Map Multiplier: 0.0 - 1.0
    Controls the influence of the vector map input for moving the shapes in the direction of the vector specified by the map's red (X) and green (Y) channels.
  • Offset Horizontal: -2.0 - 2.0
    A multiplier for position offset along the X axis.
  • Offset Vertical: -2.0 - 2.0
    A multiplier for position offset along the Y axis.
  • Out of Bounds Option: Scale Shape, Constrain Position
    Due to the technical nature of the splatter, shapes can't be drawn more than 2 cells size away from their original position. If a shape becomes too large or is moved too far you have two options: - Scale Shape will reduce the shape size when it hit a bound - Constrain Position will move the shape back to its original position
• Rotation
  
  • Rotation: 0.0 - 1.0
    Lets you control the local rotation for all shapes.
  • Rotation Random: 0.0 - 1.0
    A multiplier for a random amount of rotation applied per shape.
  • Rotation from Bg Slope: 0.0 - 1.0
    Modifies the shape rotation in function of the background height slope. Usually used in combination with the "Size Ratio from Bg Slope" parameter
  • Rotation Map Multiplier: 0.0 - 1.0
    Multiplies the shape rotation in function of the input image grayscale value.
  • Vector Map Multiplier: 0.0 - 1.0
    Sets the shape rotation in function of the vector image input.
• Height
  
  • Height Scale Auto Adjust: False/True
    Automatically adjust the height in function of the pattern scale to keep the shape height proportional to the background height.
  • Blend Mode: Height Blend, Alpha Test
    Sets the method for solving shapes overlaps.
  • Height Offset: -1.0 - 1.0
    Applies a global offset to the shapes height
  • Height Offset Random: 0.0 - 1.0
    A multiplier for a random height offset applied per shape
  • Height Offset Map Mulitplier: 0.0 - 1.0
    Multiplies the shape height offset in function of the input image grayscale value.
  • Height Scale: 0.0 - 1.0
    Lets you control the global height scale for the scattered shapes
  • Height Scale Random: 0.0 - 1.0
    A multiplier for a random height scale applied per shape
  • Height Scale Map Multiplier: 0.0 - 1.0
    Multiplies the shape height scale in function of the input image grayscale value.
  • Conform to Background: 0.0 - 1.0
    At 0, the shape height remains intact, at 1 the shape height will be deformed by the underlying height background.
  • Smooth Conformed Background: 0.0 - 2.0
    Lets you control the amount of smoothing applied to the height deformation of the shape when it is conformed to its background.
  • Skew from Bg Slope: 0.0 - 1.0
    Deforms the shape height in function of the local background height slope: a linear gradient corresponding to the background slope is added to the shape height.
  • Background Slope Smoothness: 0.0 - 2.0
    Controls the amount of smoothing applied to the background slope when the shape is skewed based on that slope.
  • Cutout Black Pixels: False/True
    Ignores the black value from the pattern inputs.
  • Flatten Pattern Base: False/True
    Lets you flatten the background height beneath a shape to match is starting height.
• Masking
  
  • Mask Random: 0.0 - 1.0
    Masks a random amount of shapes, expressed as a ratio of the total amount.
  • Mask Random Map Multiplier: 0.0 - 1.0
    Sets the random shape masking in function of the grayscale image input.
  • Mask from Bg Slope: -1.0 - 1.0
    Controls the masking of the shapes based on the slope of the background at their location.
• Color
  
  • Color Adjustment: -1.0 - 1.0
    Lets you adjust the colors for the scattered elements globally.
  • Color Random: 0.0 - 1.0
    A multiplier for shifting the color values by a random amount per shape.
  • Color from Background: 0.0 - 1.0
    Shifts the shape colors to the color of the background at their location.
• Normal
  
  • Skew from Bg Slope: 0.0 - 1.0
    Skew the shape normal according to the background normal.
  • Normal Random: 0.0 - 1.0
    A multiplier for skewing the shape normal by a random amount per shape.
  • Normal Format: DirectX, OpenGL
    Switch between different Normal Map formats (inverts the green channel)
• Roughness
  
  • Roughness Adjustment: -1.0 - 1.0
    Lets you offset the global shape roughness.
  • Roughness from Background: 0.0 - 1.0
    Shifts the shapes roughness to the background roughness at their location.
  • Roughness Random: 0.0 - 1.0
    A multiplier for offsetting the roughness by a random amount per shape.

Example Images