import { NativeTransform4x4 } from "../../dependencies/conway-geom/index.js";
import { Model } from "./model.js";
import { ReadonlyUint32Array } from "./readonly_typed_array.js";
export declare enum SceneNodeModelType {
    GEOMETRY = 0,
    TRANSFORM = 1
}
/** Base type for scene nodes */
export interface SceneNodeModelBase {
    /**
     * Type of the scene node.
     */
    readonly type: SceneNodeModelType;
    /**
     * Model of the scene node.
     */
    readonly model: Model;
    /**
     * Local id the scene node represents in the model.
     */
    readonly localID: number;
    /**
     * The index of a parent node for this node within
     * the scene array.
     */
    readonly parentIndex?: number;
    /**
     * The index of this node within the scene array.
     */
    readonly index: number;
}
/** A transform scene node */
export interface SceneNodeTransform extends SceneNodeModelBase {
    /**
     * The type of this scene node.
     */
    readonly type: SceneNodeModelType.TRANSFORM;
    /**
     * The model this node relates to.
     */
    readonly model: Model;
    /**
     * The absolute (non-relative) transform of this as a 4x4 matrix in OpenGL convention
     */
    readonly absoluteTransform: Float64Array | Float32Array | ReadonlyArray<number>;
    /**
     * The local id of the matching entity in the model of this.
     */
    readonly localID: number;
    /**
     * The index of this in the scene array
     */
    readonly index: number;
    /**
     * Native transform relative to the parent transform,
     * or whole model transform if this has no parent.
     */
    readonly nativeTransform: NativeTransform4x4;
    /**
     * Transform object on the natative heap absolute to the model (i.e.
     * concatenating all the parents
     */
    readonly absoluteNativeTransform: NativeTransform4x4;
    /**
     * The index of the parent scene node of this, will always be a
     * transform node or undefined.
     */
    readonly parentIndex?: number;
    /**
     * 4x4 transform matrix, stored in OpenGL Convention.
     *
     * If none is found, the identity transform is assumed
     */
    readonly transform: Float64Array | Float32Array | ReadonlyArray<number>;
    /**
     * The current children of this node.
     */
    readonly children: ReadonlyUint32Array | ReadonlyArray<number>;
}
export interface SceneNodeGeometry extends SceneNodeModelBase {
    /**
     * Geometry node.
     */
    readonly type: SceneNodeModelType.GEOMETRY;
    /**
     * The model it came from.
     */
    readonly model: Model;
    /**
     * The local id of the related element in the model (i.e. the IfcProduct).
     */
    readonly relatedElementLocalId?: number;
    /**
     * The local id of the geometry in the model.
     */
    readonly localID: number;
    /**
     * The index of this node in the scene array.
     */
    readonly index: number;
    /**
     * The index of the parent of this node in the scene array,
     * note it will always be a transform if it exists.
     */
    readonly parentIndex?: number;
    /**
     * Does this geometry represent a "space" (i.e. is it an "empty area",
     * not part of the regular body geometry)
     */
    readonly isSpace: boolean;
    /**
     * Overrides the geometry id used to lookup a material for this,
     * used where a proxy piece of geometry (for example, in a boolean operation)
     * is used to give this a material.
     */
    readonly materialOverideLocalID?: number;
}
/** Composite scene node tagged union type */
export type SceneNode = SceneNodeGeometry | SceneNodeTransform;
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