react-planner-electron/src/reducers/scene-reducer.js

react-planner-electron is a React Component for plans design. Draw a 2D floorplan and navigate it in 3D mode.

import { Layer } from '../class/export';
import { history } from '../utils/export';
import {
  ADD_LAYER,
  SELECT_LAYER,
  SET_LAYER_PROPERTIES,
  REMOVE_LAYER
} from '../constants';

export default function (state, action) {

  state = state.merge({ sceneHistory: history.historyPush(state.sceneHistory, state.scene) });

  switch (action.type) {
    case ADD_LAYER:
      return Layer.create( state, action.name, action.altitude).updatedState;

    case SELECT_LAYER:
      return Layer.select( state, action.layerID ).updatedState;

    case SET_LAYER_PROPERTIES:
      return Layer.setProperties( state, action.layerID, action.properties ).updatedState;

    case REMOVE_LAYER:
      return Layer.remove( state, action.layerID ).updatedState;

    default:
      return state;
  }
}