channel

Which part of the child's color drives a particle: luminance, luminanceInverted, red, green, blue, saturation or alpha, each a number in 0–1.

channel: { luminance, luminanceInverted, red, green, blue, saturation, alpha, byMode }

Import sim from shaders/std and use sim.agentForces.channel.

byMode maps a select prop's number (0 luminance … 6 alpha) to the same functions.

Example

integrator.relief(fieldLayout, {channel: channel.byMode[channelMode] ?? channel.luminance, cursor: force.cursorInView(fieldLayout, {perspK: 0.9}), stiffness: 18, maxSpeed: 4, minAlpha: 0.02, name: 'reliefUpdate'})

Members

• channel.luminance — The color's brightness, 0 black to 1 white.
• channel.luminanceInverted — One minus the brightness, so dark areas rise.
• channel.red — The red channel.
• channel.green — The green channel.
• channel.blue — The blue channel.
• channel.saturation — How colorful the pixel is, 0 grey to 1 pure.
• channel.alpha — The pixel's alpha.
• channel.byMode — The same seven by a select prop's number: 0 luminance, 1 inverted, 2 red, 3 green, 4 blue, 5 saturation, 6 alpha.

See also

• integrator — The update step of an agent simulation: one per kind of agent.