@box2d/debug-draw/dist/core/src/common/b2_readonly.d.ts

Debug drawing helper for @box2d

import type { b2Mat22, b2Mat33, b2Rot, b2Sweep, b2Transform, b2Vec2, b2Vec3 } from "./b2_math";
/**
 * A map, so b2Readonly can determine the readonly properties of a Type
 *
 * The key should be the name of the type to be readonly-fied. The value is a tuple with 3 parts:
 * - The type that can be made readonly
 * - The properties that should be picked from that type
 * - A manual set of properties to be added to the readonly type.
 *   Use this to specify properties which need to use b2Readonly.
 *   Set it to `unknown` if there is no need for manual properties
 */
export interface b2ReadonlyTypes {
    b2Vec2: [
        b2Vec2,
        "x" | "y" | "Clone" | "Dot" | "Cross" | "Length" | "LengthSquared" | "IsValid" | "GetAbs",
        unknown
    ];
    b2Vec3: [b2Vec3, "x" | "y" | "z" | "Clone", unknown];
    b2Mat22: [
        b2Mat22,
        "Clone" | "GetAngle" | "GetInverse" | "GetAbs",
        {
            ex: b2Readonly<b2Vec2>;
            ey: b2Readonly<b2Vec2>;
        }
    ];
    b2Mat33: [
        b2Mat33,
        "Clone" | "Solve33" | "Solve22" | "GetInverse22" | "GetSymInverse33",
        {
            ex: b2Readonly<b2Vec3>;
            ey: b2Readonly<b2Vec3>;
            ez: b2Readonly<b2Vec3>;
        }
    ];
    b2Rot: [b2Rot, "s" | "c" | "Clone" | "GetAngle" | "GetXAxis" | "GetYAxis", unknown];
    b2Transform: [
        b2Transform,
        "GetPosition" | "GetRotation" | "GetAngle",
        {
            p: b2Readonly<b2Vec2>;
            q: b2Readonly<b2Rot>;
        }
    ];
    b2Sweep: [b2Sweep, "a0" | "a" | "alpha" | "Clone" | "GetTransform", {
        localCenter: b2Vec2;
        c0: b2Vec2;
        c: b2Vec2;
    }];
}
type GetFromTypes<T> = {
    [TKey in keyof b2ReadonlyTypes as b2ReadonlyTypes[TKey] extends [T, any, any] ? "result" : never]: b2ReadonlyTypes[TKey] extends [T, infer TPicks, infer TManual] ? [TPicks, TManual] : never;
};
/**
 * This type can be used to make a type like ReadonlyArray without introducing new types to learn.
 * So you can simply write `b2Readonly<b2Vec2>` instead of `b2ReadonlyVec2`.
 *
 * By default it only works with math types from @box2d/core, but you can extend it via declaration merging of `b2ReadonlyTypes`.
 */
export type b2Readonly<T> = T extends (...args: any[]) => any ? T : GetFromTypes<T> extends {
    result: [infer TProperties extends keyof T, infer TManual];
} ? Readonly<TManual & {
    [TKey in TProperties]: b2Readonly<T[TKey]>;
}> : Readonly<T>;
export {};
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