@react-vertex/orbit-camera/dist/cjs/OrbitControls.js

Orbit Camera and Controls for React Vertex

"use strict";

var _interopRequireDefault = require("@babel/runtime/helpers/interopRequireDefault");

Object.defineProperty(exports, "__esModule", {
  value: true
});
exports.OrbitControls = void 0;

var _slicedToArray2 = _interopRequireDefault(require("@babel/runtime/helpers/slicedToArray"));

var _classCallCheck2 = _interopRequireDefault(require("@babel/runtime/helpers/classCallCheck"));

var _createClass2 = _interopRequireDefault(require("@babel/runtime/helpers/createClass"));

var OrbitControls = /*#__PURE__*/function () {
  function OrbitControls(camera, element) {
    var _this = this;

    (0, _classCallCheck2["default"])(this, OrbitControls);
    this.camera = void 0;
    this.element = void 0;
    this.dollyStep = void 0;
    this.dollyCurr = void 0;
    this.dragging = false;
    this.distance = null;
    this.x = 0;
    this.y = 0;
    this.lastX = 0;
    this.lastY = 0;
    this.rotationSpeed = 1000;

    this.onMouseUp = function (e) {
      e.stopPropagation();
      e.preventDefault();
      _this.dragging = false;
      _this.distance = null;
    };

    this.onTouchEnd = function (e) {
      e.stopPropagation();
      e.preventDefault();
      _this.dragging = false;
      _this.distance = null;
    };

    this.onMouseDown = function (e) {
      _this.dragging = true;
      e.stopPropagation();
      e.preventDefault();
      _this.x = e.pageX;
      _this.y = e.pageY;
    };

    this.onTouchStart = function (e) {
      var _e$touches = (0, _slicedToArray2["default"])(e.touches, 2),
          t1 = _e$touches[0],
          t2 = _e$touches[1];

      e.stopPropagation();
      e.preventDefault();

      if (t2) {
        var a = t1.pageX - t2.pageX;
        var b = t1.pageY - t2.pageY;
        _this.distance = Math.sqrt(a * a + b * b);
      } else {
        _this.x = t1.pageX;
        _this.y = t1.pageY;
        _this.dragging = true;
      }
    };

    this.onMouseMove = function (e) {
      _this.lastX = _this.x;
      _this.lastY = _this.y;
      e.stopPropagation();
      e.preventDefault();
      _this.x = e.pageX;
      _this.y = e.pageY;
      if (!_this.dragging) return;
      var dx = _this.lastX - _this.x;
      var dy = _this.lastY - _this.y;

      _this.rotate(dx, dy);
    };

    this.onTouchMove = function (e) {
      var _e$touches2 = (0, _slicedToArray2["default"])(e.touches, 2),
          t1 = _e$touches2[0],
          t2 = _e$touches2[1];

      e.stopPropagation();
      e.preventDefault();

      if (t2) {
        if (!_this.distance) {
          return;
        }

        var a = t1.pageX - t2.pageX;
        var b = t1.pageY - t2.pageY;
        var nextDistance = Math.sqrt(a * a + b * b);

        if (_this.distance > nextDistance) {
          _this.dollyCurr -= _this.dollyStep;
        } else {
          _this.dollyCurr += _this.dollyStep;
        }

        _this.camera.dolly(_this.dollyCurr);

        _this.distance = nextDistance;
      } else if (_this.dragging) {
        _this.lastX = _this.x;
        _this.lastY = _this.y;
        _this.x = t1.pageX;
        _this.y = t1.pageY;
        var dx = _this.lastX - _this.x;
        var dy = _this.lastY - _this.y;

        _this.rotate(dx, dy);
      }
    };

    this.onMouseWheel = function (e) {
      e.stopPropagation();
      e.preventDefault();

      _this.dolly(e.deltaY);
    };

    this.camera = camera;
    this.element = element;
    this.dollyStep = Math.max(this.camera.position[0], this.camera.position[1], this.camera.position[2]) / 100;
    this.dollyCurr = 0;
  }

  (0, _createClass2["default"])(OrbitControls, [{
    key: "dolly",
    value: function dolly(value) {
      if (value < 0) {
        this.dollyCurr += this.dollyStep;
      } else {
        this.dollyCurr -= this.dollyStep;
      }

      this.camera.dolly(this.dollyCurr);
    }
  }, {
    key: "rotate",
    value: function rotate(dx, dy) {
      var _this$element = this.element,
          width = _this$element.width,
          height = _this$element.height;
      var incX = dx / width * this.rotationSpeed;
      var incY = dy / height * this.rotationSpeed;
      dx && this.camera.incRotationY(incX);
      dy && this.camera.incRotationX(incY);
    }
  }]);
  return OrbitControls;
}();

exports.OrbitControls = OrbitControls;
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