Function projectPosition

docs/tests/v2/es6/js/sanddance.js:39090–39127

* Equivalent to project_position in project.glsl * projects a user supplied position to world position in the target coordinates system * @param {array} position - [x, y, z] * @param {object} params * @param {Viewport} params.viewport - the current viewport * @param {number} params.coordinateSy

(position, params)

function projectPosition(position, params) {
  var _normalizeParameters = normalizeParameters(params),
      viewport = _normalizeParameters.viewport,
      coordinateSystem = _normalizeParameters.coordinateSystem,
      coordinateOrigin = _normalizeParameters.coordinateOrigin,
      modelMatrix = _normalizeParameters.modelMatrix,
      fromCoordinateSystem = _normalizeParameters.fromCoordinateSystem,
      fromCoordinateOrigin = _normalizeParameters.fromCoordinateOrigin;

  switch (coordinateSystem) {
    case _constants.COORDINATE_SYSTEM.LNGLAT_OFFSETS:
    case _constants.COORDINATE_SYSTEM.METER_OFFSETS:
      {
        var worldPosition = getWorldPosition(position, {
          viewport: viewport,
          modelMatrix: modelMatrix,
          coordinateSystem: fromCoordinateSystem,
          coordinateOrigin: fromCoordinateOrigin,
          offsetMode: true
        });
        var originWorld = lngLatZToWorldPosition(coordinateOrigin, viewport, true);
        vec3.sub(worldPosition, worldPosition, originWorld);
        return worldPosition;
      }

    case _constants.COORDINATE_SYSTEM.LNGLAT:
    case _constants.COORDINATE_SYSTEM.LNGLAT_DEPRECATED:
    case _constants.COORDINATE_SYSTEM.IDENTITY:
    default:
      return getWorldPosition(position, {
        viewport: viewport,
        modelMatrix: modelMatrix,
        coordinateSystem: fromCoordinateSystem,
        coordinateOrigin: fromCoordinateOrigin,
        offsetMode: false
      });
  }
}
},{"../../lib/constants":"hXbg","./viewport-uniforms":"aNiS","gl-matrix/vec4":"QGfo","gl-matrix/vec3":"Ijz7","viewport-mercator-project":"ha5B"}],"vVxT":[function(require,module,exports) {
"use strict";