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import type { ClosedSurface, PointCharge, SurfaceShape } from './physics';
export interface FluxState {
chargeNC: number;
chargeX: number;
size: number;
shape: SurfaceShape;
fieldLines: boolean;
surface: boolean;
normals: boolean;
}
export const defaultState: Readonly<FluxState> = {
chargeNC: 2,
chargeX: 0,
size: 1.8,
shape: 'sphere',
fieldLines: true,
surface: true,
normals: false,
};
export const presets = {
positive: { ...defaultState },
negative: { ...defaultState, chargeNC: -2 },
outside: { ...defaultState, chargeX: 3.2 },
} satisfies Record<string, FluxState>;
export type Preset = keyof typeof presets;
export function physicsInputs(state: FluxState): { charge: PointCharge; surface: ClosedSurface } {
return {
charge: { coulombs: state.chargeNC * 1e-9, position: { x: state.chargeX, y: 0, z: 0 } },
surface: { shape: state.shape, size: state.size },
};
}
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