kepler.gl.geoiq

Version:
kepler.gl is a webgl based application to visualize large scale location data in the browser
159 lines (128 loc) • 17.3 kB
JavaScript
"use strict";

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

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

var _defineProperty2 = _interopRequireDefault(require("@babel/runtime/helpers/defineProperty"));

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

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

var _possibleConstructorReturn2 = _interopRequireDefault(require("@babel/runtime/helpers/possibleConstructorReturn"));

var _getPrototypeOf2 = _interopRequireDefault(require("@babel/runtime/helpers/getPrototypeOf"));

var _get2 = _interopRequireDefault(require("@babel/runtime/helpers/get"));

var _inherits2 = _interopRequireDefault(require("@babel/runtime/helpers/inherits"));

var _deck = require("deck.gl");

var _luma = require("luma.gl");

var _h3Utils = require("../../layers/h3-hexagon-layer/h3-utils");

var _shaderUtils = require("../layer-utils/shader-utils");

function ownKeys(object, enumerableOnly) { var keys = Object.keys(object); if (Object.getOwnPropertySymbols) { var symbols = Object.getOwnPropertySymbols(object); if (enumerableOnly) symbols = symbols.filter(function (sym) { return Object.getOwnPropertyDescriptor(object, sym).enumerable; }); keys.push.apply(keys, symbols); } return keys; }

function _objectSpread(target) { for (var i = 1; i < arguments.length; i++) { var source = arguments[i] != null ? arguments[i] : {}; if (i % 2) { ownKeys(Object(source), true).forEach(function (key) { (0, _defineProperty2["default"])(target, key, source[key]); }); } else if (Object.getOwnPropertyDescriptors) { Object.defineProperties(target, Object.getOwnPropertyDescriptors(source)); } else { ownKeys(Object(source)).forEach(function (key) { Object.defineProperty(target, key, Object.getOwnPropertyDescriptor(source, key)); }); } } return target; }

function addInstanceCoverage(vs) {
  var addDecl = (0, _shaderUtils.editShader)(vs, 'hexagon cell vs add instance', 'attribute vec3 instancePickingColors;', "attribute vec3 instancePickingColors;\n     attribute float instanceCoverage;");
  return (0, _shaderUtils.editShader)(addDecl, 'hexagon cell vs add instance', 'float dotRadius = project_scale(radius) * mix(coverage, 0.0, noRender);', 'float dotRadius = project_scale(radius) * mix(coverage * instanceCoverage, 0.0, noRender);');
} // TODO: export all dekc.gl layers from kepler.gl


var H3HexagonCellLayer =
/*#__PURE__*/
function (_HexagonCellLayer) {
  (0, _inherits2["default"])(H3HexagonCellLayer, _HexagonCellLayer);

  function H3HexagonCellLayer() {
    (0, _classCallCheck2["default"])(this, H3HexagonCellLayer);
    return (0, _possibleConstructorReturn2["default"])(this, (0, _getPrototypeOf2["default"])(H3HexagonCellLayer).apply(this, arguments));
  }

  (0, _createClass2["default"])(H3HexagonCellLayer, [{
    key: "getShaders",
    value: function getShaders() {
      var shaders = (0, _get2["default"])((0, _getPrototypeOf2["default"])(H3HexagonCellLayer.prototype), "getShaders", this).call(this);
      return _objectSpread({}, shaders, {
        vs: addInstanceCoverage(shaders.vs)
      });
    }
  }, {
    key: "getCylinderGeometry",
    value: function getCylinderGeometry(radius) {
      var distortion = this.getDistortion();
      var cylinderGeometry = new _luma.CylinderGeometry({
        radius: radius,
        topRadius: radius,
        bottomRadius: radius,
        topCap: true,
        bottomCap: true,
        height: 1,
        verticalAxis: 'z',
        nradial: 6,
        nvertical: 1
      });

      if (distortion) {
        var pos = cylinderGeometry.attributes.positions.value;
        var adjusted = (0, _h3Utils.distortCylinderPositions)(pos, distortion);
        cylinderGeometry.attributes.positions.value = adjusted;
      }

      return cylinderGeometry;
    }
  }, {
    key: "getDistortion",
    value: function getDistortion() {
      var _this = this;

      var _this$props = this.props,
          hexagonVertices = _this$props.hexagonVertices,
          hexagonCenter = _this$props.hexagonCenter;

      if (Array.isArray(hexagonVertices) && hexagonVertices.length >= 6 && Array.isArray(hexagonCenter)) {
        var screenVertices = hexagonVertices.map(function (d) {
          return _this.projectFlat(d);
        });
        var screenCentroid = this.projectFlat(hexagonCenter);
        return (0, _h3Utils.getH3VerticeTransform)(screenVertices, screenCentroid);
      }

      return null;
    }
  }, {
    key: "updateRadiusAngle",
    value: function updateRadiusAngle() {
      var _this$props2 = this.props,
          angle = _this$props2.angle,
          radius = _this$props2.radius;
      var hexagonVertices = this.props.hexagonVertices;

      if (Array.isArray(hexagonVertices) && hexagonVertices.length >= 6) {
        var viewport = this.context.viewport; // calculate angle and vertices from hexagonVertices if provided

        var vertices = this.props.hexagonVertices;
        var vertex0 = vertices[0];
        var vertex3 = vertices[3]; // project to space coordinates

        var _viewport$getDistance = viewport.getDistanceScales(),
            pixelsPerMeter = _viewport$getDistance.pixelsPerMeter;

        var spaceCoord0 = this.projectFlat(vertex0);
        var spaceCoord3 = this.projectFlat(vertex3);
        angle = (0, _h3Utils.getAngle)(spaceCoord0, spaceCoord3);
        radius = (0, _h3Utils.getRadius)(spaceCoord0, spaceCoord3) / pixelsPerMeter[0];
      }

      this.setState({
        angle: angle,
        radius: radius
      });
    }
  }, {
    key: "draw",
    value: function draw(opts) {
      var uniforms = opts.uniforms;
      (0, _get2["default"])((0, _getPrototypeOf2["default"])(H3HexagonCellLayer.prototype), "draw", this).call(this, _objectSpread({}, opts, {
        uniforms: _objectSpread({}, uniforms, {
          picking_uHighlightScale: this.props.extruded ? 1.4 : 0.0
        })
      }));
    }
  }, {
    key: "initializeState",
    value: function initializeState() {
      (0, _get2["default"])((0, _getPrototypeOf2["default"])(H3HexagonCellLayer.prototype), "initializeState", this).call(this);
      this.getAttributeManager().addInstanced({
        instanceCoverage: {
          size: 1,
          accessor: 'getCoverage'
        }
      });
    }
  }]);
  return H3HexagonCellLayer;
}(_deck.HexagonCellLayer);

exports["default"] = H3HexagonCellLayer;
H3HexagonCellLayer.layerName = 'H3HexagonCellLayer';
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IN NO EVENT SHALL THE\n// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n// THE SOFTWARE.\n\nimport {HexagonCellLayer} from 'deck.gl';\nimport {CylinderGeometry} from 'luma.gl';\nimport {getAngle, getRadius, getH3VerticeTransform, distortCylinderPositions} from 'layers/h3-hexagon-layer/h3-utils';\nimport {editShader} from 'deckgl-layers/layer-utils/shader-utils';\n\nfunction addInstanceCoverage(vs) {\n  const addDecl = editShader(\n    vs,\n    'hexagon cell vs add instance',\n    'attribute vec3 instancePickingColors;',\n    `attribute vec3 instancePickingColors;\n     attribute float instanceCoverage;`\n  );\n\n  return editShader(\n    addDecl,\n    'hexagon cell vs add instance',\n    'float dotRadius = project_scale(radius) * mix(coverage, 0.0, noRender);',\n    'float dotRadius = project_scale(radius) * mix(coverage * instanceCoverage, 0.0, noRender);'\n  );\n}\n\n// TODO: export all dekc.gl layers from kepler.gl\nexport default class H3HexagonCellLayer extends HexagonCellLayer {\n\n  getShaders() {\n    const shaders = super.getShaders();\n\n    return {\n      ...shaders,\n      vs: addInstanceCoverage(shaders.vs)\n    };\n  }\n\n  getCylinderGeometry(radius) {\n    const distortion = this.getDistortion();\n\n    const cylinderGeometry = new CylinderGeometry({\n      radius,\n      topRadius: radius,\n      bottomRadius: radius,\n      topCap: true,\n      bottomCap: true,\n      height: 1,\n      verticalAxis: 'z',\n      nradial: 6,\n      nvertical: 1\n    });\n\n    if (distortion) {\n      const pos = cylinderGeometry.attributes.positions.value;\n      const adjusted = distortCylinderPositions(pos, distortion);\n      cylinderGeometry.attributes.positions.value = adjusted;\n    }\n\n    return cylinderGeometry;\n  }\n\n  getDistortion() {\n    const {hexagonVertices, hexagonCenter} = this.props;\n\n    if (Array.isArray(hexagonVertices) &&\n      hexagonVertices.length >= 6 &&\n      Array.isArray(hexagonCenter)) {\n        const screenVertices = hexagonVertices.map(d => this.projectFlat(d));\n        const screenCentroid = this.projectFlat(hexagonCenter);\n        return getH3VerticeTransform(screenVertices, screenCentroid);\n    }\n\n    return null;\n  }\n\n  updateRadiusAngle() {\n    let {angle, radius} = this.props;\n    const {hexagonVertices} = this.props;\n\n    if (Array.isArray(hexagonVertices) && hexagonVertices.length >= 6) {\n      const {viewport} = this.context;\n      // calculate angle and vertices from hexagonVertices if provided\n      const vertices = this.props.hexagonVertices;\n\n      const vertex0 = vertices[0];\n      const vertex3 = vertices[3];\n\n      // project to space coordinates\n      const {pixelsPerMeter} = viewport.getDistanceScales();\n      const spaceCoord0 = this.projectFlat(vertex0);\n      const spaceCoord3 = this.projectFlat(vertex3);\n\n      angle = getAngle(spaceCoord0, spaceCoord3);\n      radius = getRadius(spaceCoord0, spaceCoord3) /pixelsPerMeter[0];\n    }\n\n    this.setState({angle, radius});\n  }\n\n  draw(opts) {\n    const {uniforms} = opts;\n\n    super.draw({\n      ...opts,\n      uniforms: {\n        ...uniforms,\n        picking_uHighlightScale: this.props.extruded ? 1.4 : 0.0\n      }\n    })\n  }\n\n  initializeState() {\n    super.initializeState();\n\n    this.getAttributeManager().addInstanced({\n      instanceCoverage: {size: 1, accessor: 'getCoverage'}\n    });\n  }\n}\n\nH3HexagonCellLayer.layerName = 'H3HexagonCellLayer';\n"]}