/**
 * TextNode - TSL Node for Text geometry transformation.
 *
 * Follows the same pattern as InstanceNode and BatchNode from three.js.
 * This node modifies positionLocal and normalLocal with text-specific
 * geometry transformations (glyph bounds, SDF calculations, etc.).
 *
 * Uses the shared textGlyphTransform for core glyph transformation logic,
 * which is also used by BatchedTextNode for code reuse.
 *
 * @module TextNode
 */
import { Node } from 'three/webgpu';
import type { Color, Matrix3, NodeBuilder, Vector2, Vector4 } from 'three/webgpu';
import type { TSLNodeFactory, TSLUniformNode, TSLVec3Node, TSLVoidNode } from '../types/tsl.cjs';
export interface TextNodeUniforms {
    uThreeBlocksSdfDebug: TSLUniformNode<'float', number>;
    uThreeBlocksSDFTextureSize: TSLUniformNode<'vec2', Vector2>;
    uThreeBlocksSDFGlyphSize: TSLUniformNode<'float', number>;
    uThreeBlocksSDFExponent: TSLUniformNode<'float', number>;
    uThreeBlocksTotalBounds: TSLUniformNode<'vec4', Vector4>;
    uThreeBlocksClipRect: TSLUniformNode<'vec4', Vector4>;
    uThreeBlocksDistanceOffset: TSLUniformNode<'float', number>;
    uThreeBlocksOutlineOpacity: TSLUniformNode<'float', number>;
    uThreeBlocksFillOpacity: TSLUniformNode<'float', number>;
    uThreeBlocksBaseColor: TSLUniformNode<'color', Color>;
    uThreeBlocksOutlineColor: TSLUniformNode<'color', Color>;
    uThreeBlocksPositionOffset: TSLUniformNode<'vec2', Vector2>;
    uThreeBlocksBlurRadius: TSLUniformNode<'float', number>;
    uThreeBlocksOrient: TSLUniformNode<'mat3', Matrix3>;
    uThreeBlocksBillboard: TSLUniformNode<'float', number>;
}
export interface TextNodeSource {
    uniforms: TextNodeUniforms;
}
export interface TextNodeFactory extends TSLNodeFactory<[text: TextNodeSource], TSLVoidNode> {
    setParameterLength(length: number): this;
}
/**
 * TextNode implements vertex shader logic for Text rendering.
 * It transforms positionLocal based on glyph bounds and SDF atlas data.
 *
 * Uses textGlyphTransform with uniform-based parameters for single Text instances.
 *
 * @augments Node
 */
declare class TextNode extends Node<'void'> {
    static get type(): string;
    /**
     * Constructs a new TextNode.
     *
     * @param {Text} text - Reference to the Text instance.
     */
    text: TextNodeSource;
    constructor(text: TextNodeSource);
    /**
     * Sets up the text geometry transformation.
     * Modifies positionLocal and normalLocal, and sets up varyings
     * for fragment shader (TSL accessor compatibility).
     *
     * @param {NodeBuilder} builder - The current node builder.
     */
    setup(_builder: NodeBuilder): TSLVec3Node;
}
export default TextNode;
/**
 * TSL function for creating a TextNode.
 *
 * TextNode implements vertex shader logic for Text rendering.
 * It transforms positionLocal based on glyph bounds and SDF atlas data.
 * This node should be used in `material.setupVertex` to handle text geometry transformation.
 *
 * Uses textGlyphTransform with uniform-based parameters for single Text instances.
 *
 * This implementation-level API is intentionally internal and has no public package import.
 */
export declare const text: TextNodeFactory;