Function calculateMatrixAndOffset

docs/app/js/sanddance-app.js:79503–79530

(viewport, coordinateSystem, coordinateOrigin)

    };
}
function calculateMatrixAndOffset(viewport, coordinateSystem, coordinateOrigin) {
    var viewMatrixUncentered = viewport.viewMatrixUncentered, projectionMatrix = viewport.projectionMatrix;
    var viewMatrix = viewport.viewMatrix, viewProjectionMatrix = viewport.viewProjectionMatrix;
    var projectionCenter = ZERO_VECTOR;
    var cameraPosCommon = viewport.cameraPosition;
    var _getOffsetOrigin = getOffsetOrigin(viewport, coordinateSystem, coordinateOrigin), geospatialOrigin = _getOffsetOrigin.geospatialOrigin, shaderCoordinateOrigin = _getOffsetOrigin.shaderCoordinateOrigin, offsetMode = _getOffsetOrigin.offsetMode;
    if (offsetMode) {
        var positionCommonSpace = viewport.projectPosition(geospatialOrigin || shaderCoordinateOrigin);
        cameraPosCommon = [
            cameraPosCommon[0] - positionCommonSpace[0],
            cameraPosCommon[1] - positionCommonSpace[1],
            cameraPosCommon[2] - positionCommonSpace[2]
        ];
        positionCommonSpace[3] = 1;
        projectionCenter = _vec4.transformMat4([], positionCommonSpace, viewProjectionMatrix);
        viewMatrix = viewMatrixUncentered || viewMatrix;
        viewProjectionMatrix = _mat4.multiply([], projectionMatrix, viewMatrix);
        viewProjectionMatrix = _mat4.multiply([], viewProjectionMatrix, VECTOR_TO_POINT_MATRIX);
    }
    return {
        viewMatrix: viewMatrix,
        viewProjectionMatrix: viewProjectionMatrix,
        projectionCenter: projectionCenter,
        cameraPosCommon: cameraPosCommon,
        shaderCoordinateOrigin: shaderCoordinateOrigin,
        geospatialOrigin: geospatialOrigin
    };
}
function getUniformsFromViewport() {
    var _ref = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : {}, viewport = _ref.viewport, _ref$devicePixelRatio = _ref.devicePixelRatio, devicePixelRatio = _ref$devicePixelRatio === void 0 ? 1 : _ref$devicePixelRatio, _ref$modelMatrix = _ref.modelMatrix, modelMatrix = _ref$modelMatrix === void 0 ? null : _ref$modelMatrix, _ref$coordinateSystem = _ref.coordinateSystem, coordinateSystem = _ref$coordinateSystem === void 0 ? (0, _constants.COORDINATE_SYSTEM).DEFAULT : _ref$coordinateSystem, coordinateOrigin = _ref.coordinateOrigin, _ref$autoWrapLongitud = _ref.autoWrapLongitude, autoWrapLongitude = _ref$autoWrapLongitud === void 0 ? false : _ref$autoWrapLongitud, projectionMode = _ref.projectionMode, positionOrigin = _ref.positionOrigin;
    (0, _assertDefault.default)(viewport);