MGH_Curve Particle is a Geometry Nodes modifier designed for curve-based particle simulation in Blender. It leverages a simulation zone to animate particle movement dynamically along a curve, with extensive user controls for motion, density, and instancing.

UI Parameters & Descriptions

Motion Control

• Speed – Adjusts the movement speed of particles along the curve.
• Noise Radius – Adds positional randomness to particle movement, creating a more organic effect.
• Wiggle – Controls oscillatory motion, adding variation to the particle trajectory.

Start/End Control

• Start Radius – Defines the initial spread of particles from the curve.
• Start Balance – Controls the distribution bias of particles at the beginning.
• End Radius – Adjusts how particles disperse towards the end of the curve.
• End Balance – Controls the distribution bias of particles at the end.

Density Control

• Emission Count – Specifies the total number of emitted particles.
• Density Mask – Controls particle density distribution along the curve.

Shape & Instancing

• Pick Instance (Object Selection) – Choose a custom object to be used as a particle instance.
• Min Scale / Max Scale – Defines the minimum and maximum scale variation for particle instances.
• Random Rotation (X/Y/Z) – Enables random rotation of instances on all axes for natural variation.
• Particle Radius – Adjusts the individual particle size.

Shading & Output

• Particle Material (ID Assignment) – Assigns a material to the particle instances.
• Output Attributes
  • points_factor – A custom attribute used for gradient ramp shading, allowing smooth transitions in material properties.

Key Applications

• Procedural animations and motion graphics
• Abstract particle trails and dynamic effects
• Optimized object scattering along curves
• Creative visual effects in Blender

MGH_Curve Particle is a versatile, artist-friendly tool that brings parametric particle control into Blender’s procedural workflow.