s2maps-gpu/dist/style/encodeLayerAttribute.d.ts

S2 Maps GPU - An open source, high-performance, and GPU-accelerated map engine for rendering large-scale, interactive maps.

import type { NotNullOrObject, Property, ValueType } from './style.spec.js';
/**
 * This encoder is built for webgl/webgpu to parse for conditional drawing.
 * The Style object will parse all layers' attributes like "color", "fill", "width", etc.
 * The code will be placed into "LayerCode" for the GPU shader to utiilize as necessary.
 *
 * CONDITION ENCODINGS: 128 positions possible
 * 0 -> null
 * 1 -> value
 * 2 -> data-condition
 * 3 -> input-condition
 * 4 -> data-range
 * 5 -> input-range
 * 6 -> feature-state (this updates for each draw assuming the feature has a "feature-state")
 * 7 -> animation-state (this updates for each draw assuming the feature has a "animation-state")
 * 8 -> input-value (this is a constant value pulled from properties)
 *
 * FEATURE-STATE ENCODINGS:
 * 0 -> default (inactive)
 * 1 -> hover
 * 2 -> active
 * 3 -> selected
 * 4 -> disabled
 *
 * INPUT RANGE/CONDITION ENCODINGS:
 * 0 -> zoom
 * 1 -> lon
 * 2 -> lat
 * 3 -> angle
 * 4 -> pitch
 * 5 -> time
 *
 * INTERPOLATION ENCODINGS: data-ranges or input-ranges have either linear or exponential interpolations
 * if exponential the base must also be encoded, after the type
 * 0 -> linear
 * 1 -> exponential
 * 2 -> quad-bezier
 * 3 -> cubic-bezier
 * 4 -> step
 * @param input - the value to encode
 * @param lch - whether to encode in lch
 * @returns an array of numbers encoded for the GPU to utilize
 */
export default function encodeLayerAttribute<T extends NotNullOrObject>(input: ValueType<T> | Property<ValueType<T>>, lch: boolean): number[];