Field Condition
You can use Field objects for this Condition. This makes it possible, for example, to use spatially limited areas in various forms that have value curves. These include, for example, spatial noise structures or options for influencing the particles via images, shaders or sounds.
Note:
The accuracy of Field sampling can be adjusted via the Field Sampling Variation in the Particle Simulation settings.
A shader field with a 3D color gradient colors the particle stream.