import type { ColorMode } from 's2/s2Map.js';
import type Context from '../context/context.js';
import type { TileGL as Tile } from 'source/tile.spec.js';
import type { AttributeLocations, Attributes, FeatureBase, LayerGuides, ShaderSource, Uniforms, Workflow as WorkflowFeature, WorkflowSpec } from './workflow.spec.js';
import type { BBox, VectorPoint } from 'gis-tools/index.js';
/** A Generic Feature that can be drawn to the GPU */
export declare class Feature implements FeatureBase {
    workflow: WorkflowFeature;
    tile: Tile;
    layerGuide: LayerGuides;
    featureCode: number[];
    parent?: Tile | undefined;
    bounds?: BBox | undefined;
    /**
     * @param workflow - the input workflow
     * @param tile - the tile that the feature is drawn on
     * @param layerGuide - the layer guide
     * @param featureCode - the feature code that tells the GPU how to compute it's properties
     * @param parent - the parent tile if applicable
     * @param bounds - the bounds of the tile if applicable
     */
    constructor(workflow: WorkflowFeature, tile: Tile, layerGuide: LayerGuides, featureCode?: number[], parent?: Tile | undefined, bounds?: BBox | undefined);
    /**
     * Draw the feature to the GPU
     * @param interactive - whether or not the feature is interactive
     */
    draw(interactive?: boolean): void;
    /** Destroy the feature */
    destroy(): void;
}
/** Generic Workflow used by most workflows */
export default class Workflow implements WorkflowSpec {
    vertexShader: WebGLShader;
    fragmentShader: WebGLShader;
    radii: boolean;
    context: Context;
    gl: WebGLRenderingContext | WebGL2RenderingContext;
    type: 1 | 2;
    glProgram: WebGLProgram;
    updateColorBlindMode: null | ColorMode;
    updateMatrix: null | Float32Array;
    updateInputs: null | Float32Array;
    updateAspect: null | VectorPoint;
    curLayer: number;
    curMode: number;
    curTile: bigint;
    LCH?: boolean;
    interactive?: boolean;
    uniforms: Record<string, WebGLUniformLocation>;
    /**
     * @param context - the context to use that tracks the GPU state
     */
    constructor(context: Context);
    /**
     * @param vertex - the vertex shader
     * @param fragment - the fragment shader
     * @param attributeLocations - the attribute locations
     */
    buildShaders(vertex: ShaderSource, fragment: ShaderSource, attributeLocations?: AttributeLocations): void;
    /**
     * Setup the connections to uniforms in the shader
     * @param uniforms - the mapping of uniform names to shader names
     */
    setupUniforms(uniforms: Uniforms): void;
    /**
     * Setup shader attributes, their names and locations
     * @param attributes - the mapping of attribute names to shader names
     * @param attributeLocations - the mapping of attribute names to locations
     */
    setupAttributes(attributes: Attributes, attributeLocations: AttributeLocations): void;
    /** Delete the workflow and it's shaders */
    delete(): void;
    /** Activate this workflow as the current shaders for the GPU */
    use(): void;
    /**
     * Inject uniforms that are common to the frame
     * @param matrix - the projection matrix
     * @param view - the view matrix
     * @param aspect - the canvas aspect ratio
     */
    injectFrameUniforms(matrix: Float32Array, view: Float32Array, aspect: VectorPoint): void;
    /** Flush the uniforms to the GPU */
    flush(): void;
    /**
     * Setup the tile uniforms
     * @param tile - the tile
     * @param parent - the parent tile if applicable
     */
    setTileUniforms(tile: Tile, parent?: Tile): void;
    /**
     * Set the device pixel ratio uniform
     * @param ratio - the device pixel ratio
     */
    setDevicePixelRatio(ratio: number): void;
    /**
     * Set the colorblind mode uniform
     * @param colorMode - the colorblind mode
     */
    setColorBlindMode(colorMode: ColorMode): void;
    /**
     * Set the current matrix uniform
     * @param matrix - the matrix
     */
    setMatrix(matrix: Float32Array): void;
    /**
     * Setup basic inputs uniform values
     * @param inputs - the inputs
     */
    setInputs(inputs: Float32Array): void;
    /**
     * Set the canvas aspect uniform values
     * @param aspect - the aspect
     */
    setAspect(aspect: VectorPoint): void;
    /**
     * Set the faceST uniform values
     * @param faceST - the faceST
     */
    setFaceST(faceST: number[]): void;
    /**
     * Set the tile position uniform
     * @param bottomTop - the tile position
     */
    setTilePos(bottomTop: Float32Array): void;
    /**
     * Set the layer code uniform data
     * @param layerIndex - the layer index
     * @param layerCode - the encoded layer data
     * @param lch - whether or not the layer is LCH encoded or RGB
     */
    setLayerCode(layerIndex: number, layerCode: number[], lch?: boolean): void;
    /**
     * Set the interactive mode uniform
     * @param interactive - the interactive mode
     */
    setInteractive(interactive: boolean): void;
    /**
     * Set the current feature code
     * @param featureCode - the feature code
     */
    setFeatureCode(featureCode: number[]): void;
    /**
     * Set the curent draw mode (uniform used by the shader)
     * @param mode - the draw mode
     */
    setMode(mode: number): void;
}