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DLG

simulations/dlg·v1.5.1

IN:1 OUT:1

SUMMARY

The DLG operator grows the line strips of its input, as closed loops or open lines, by pushing nearby vertices apart within Max Distance, smoothing the line toward itself and splitting edges that grow too long. The line folds and packs without crossing itself into brain coral and gyrus patterns, up to Max Number of Vertices, and comes out as line strips with a Growth attribute.

Growth Weight sets how hard each vertex pushes, Apply Noise swaps it for a noise field for uneven growth, and Growth by Curvature makes bends grow faster or slower. A mesh or field collider keeps the line outside, inside or on a surface, and the simulation runs as a feedback loop (Initialize, Start, Play) with a Target Feedback Loop POP for forces downstream.

PARAMETERS

PAGEDLG

Target Feedback Loop POP	Targetpop	A reference to a POP node downstream in the network whose data is retrieved one frame later.
Max Number of Vertices	Maxverts	Vertex limit at which growth stops.
Growth Strength	Growthstrength	Sets the strength of the per-frame repulsion between nearby vertices, which drives how fast the line spreads and grows.
Growth Weight	Growthweight	Sets the per-vertex growth weight, the Growth attribute. Higher values push harder, so the line grows faster there.
Growth by Curvature	Growthbycurvature	Scale each vertex's growth by the line's curvature there, so bends grow more (positive Curvature Influence) or less (negative).
Curvature Influence	Curvatureinfluence	Sets how strongly bends redistribute the growth. Positive values grow bends faster for branching fingers, negative values give rounder lobes.
Max Distance	Maxdistance	Radius of the repulsion, which sets the scale of the whole simulation.
[+]Line Strips	Linestrips	Determines whether the lines are closed loops or open lines with free ends.
[+]Filter Type	Filtertype	Determines the smoothing kernel type: Gaussian or Box.
Edge Distance	Filterdist	Sets the size of the smoothing kernel along the line.
Smooth Effect	Effect	Determines the amount of smoothing applied, blending from the raw result at 0 to the smoothed result at 1.
Initialize	Initializepulse	Initializes the POP from its input and parameters.
Start	Startpulse	Start the simulation from the initialized state.
Play	Play	Pause or play the feedback loop.
Step	Steppulse	Advance the simulation by one frame while paused.

PAGENoise

Apply Noise	Applynoise	When on, the Growth weight is replaced with noise sampled per vertex.
[+]Type	Type	Determines the noise type.
Seed	Seed	Numerical value that initializes the randomization.
Period	Period	Period (scale) of the noise field.
Harmonics	Harmon	The number of higher frequency components to layer on top of the base frequency. 0 harmonics give the base shape.
Harmonic Spread	Spread	The factor by which the frequency of a harmonic increases relative to the previous harmonic.
Harmonic Gain	Gain	Amplitude of the Harmonics layered on top of the base frequency.
Amplitude	Amp	The noise values amplitude (a scale on the values output).
Exponent	Exp	Sets the exponent. The internal value is raised by the power of the exponent.
Offset	Offset	Adds an offset to the resulting value.
Animate	Animate	Sets the speed of the noise evolution over time. 0 keeps the noise static.

PAGECollisions

[+]Collision Type	Collisiontype	Selects the collider: none, a POP mesh (ray traced, Windows only) or a field used as an SDF volume.
Collision POP	Collisionpop	The collider, either a mesh POP or an SDF field volume.
[+]Dist Attribute (SDF)	Distattr	For a field collider, the signed distance attribute of the Collision POP, negative inside.
Solid	Solid	When on, vertices inside the collider are pushed out. When off, the collider is hollow.
Keep Inside	Keepinside	When on, the collider is hollow and every outside vertex is pulled back in. When off, only escaping vertices are caught.
Project	Project	Place every vertex on the collider surface instead of colliding.
Collision Offset	Collisionoffset	Distance the vertices keep from the collider surface.
Collision Damping	Collisiondamping	Velocity lost on contact. 0 bounces and 1 stops.
[+]Transform Order	Xord	Sets the transform order of the collider.
[+]Rotate Order	Rord	Sets the order of the rotations of the collider.
[+]Translate	T	Translate the collider in the three axes.
[+]Rotate	R	Rotate the collider around the X, Y and Z axes. Angles are given in degrees.
[+]Scale	S	Scale factor for each axis of the collider.
[+]Pivot	P	The pivot point for the rotate and scale of the collider.
Uniform Scale	Scale	Specifies a uniform scale factor for the collider.
Display Geometry	Displaygeo	Enable drawing the collider, as the mesh or the field's zero surface.
[+]Display Color	Displaycolor	Sets the color of the displayed guides.

PAGECommon

Free Extra GPU Memory

Freeextragpumem

Free memory that has accumulated when output memory has grown and shrunk.

INPUTS

Input 0 POP - LineStrip In

OUTPUTS

Output 0 POP - LineStrip Out