157 lines
4.1 KiB
JavaScript
157 lines
4.1 KiB
JavaScript
OV.ParameterConverter =
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{
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NumberToString (number)
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{
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let precision = 5;
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return number.toPrecision (precision);
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},
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StringToNumber (str)
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{
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return parseFloat (str);
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},
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CameraToString : function (camera)
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{
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if (camera === null) {
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return null;
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}
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let cameraParameters = [
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this.NumberToString (camera.eye.x), this.NumberToString (camera.eye.y), this.NumberToString (camera.eye.z),
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this.NumberToString (camera.center.x), this.NumberToString (camera.center.y), this.NumberToString (camera.center.z),
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this.NumberToString (camera.up.x), this.NumberToString (camera.up.y), this.NumberToString (camera.up.z)
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].join (',');
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return cameraParameters;
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},
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StringToCamera : function (urlParam)
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{
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if (urlParam === null || urlParam.length === 0) {
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return null;
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}
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let paramParts = urlParam.split (',');
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if (paramParts.length !== 9) {
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return null;
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}
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let camera = new OV.Camera (
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new OV.Coord3D (this.StringToNumber (paramParts[0]), this.StringToNumber (paramParts[1]), this.StringToNumber (paramParts[2])),
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new OV.Coord3D (this.StringToNumber (paramParts[3]), this.StringToNumber (paramParts[4]), this.StringToNumber (paramParts[5])),
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new OV.Coord3D (this.StringToNumber (paramParts[6]), this.StringToNumber (paramParts[7]), this.StringToNumber (paramParts[8]))
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);
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return camera;
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},
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ModelUrlsToString : function (urls)
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{
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if (urls === null) {
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return null;
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}
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return urls.join (',');
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},
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StringToModelUrls : function (urlParam)
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{
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if (urlParam === null || urlParam.length === 0) {
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return null;
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}
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return urlParam.split (',');
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}
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};
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OV.ParameterListBuilder = class
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{
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constructor (separator)
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{
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this.separator = separator;
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this.urlParams = '';
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}
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AddModelUrls (urls)
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{
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this.AddUrlPart ('model', OV.ParameterConverter.ModelUrlsToString (urls));
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return this;
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}
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AddCamera (camera)
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{
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this.AddUrlPart ('camera', OV.ParameterConverter.CameraToString (camera));
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return this;
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}
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AddUrlPart (keyword, urlPart)
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{
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if (keyword === null || urlPart === null) {
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return;
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}
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if (this.urlParams.length > 0) {
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this.urlParams += this.separator;
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}
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this.urlParams += keyword + '=' + urlPart;
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}
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GetUrlParams ()
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{
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return this.urlParams;
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}
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};
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OV.ParameterListParser = class
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{
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constructor (urlParams, separator)
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{
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this.separator = separator;
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this.urlParams = urlParams;
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}
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GetModelUrls ()
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{
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// detect legacy links
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if (this.urlParams.indexOf ('=') === -1) {
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return this.urlParams.split (',');
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}
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let keywordParams = this.GetKeywordParams ('model');
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return OV.ParameterConverter.StringToModelUrls (keywordParams);
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}
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GetCamera ()
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{
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let keywordParams = this.GetKeywordParams ('camera');
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return OV.ParameterConverter.StringToCamera (keywordParams);
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}
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GetKeywordParams (keyword)
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{
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if (this.urlParams === null || this.urlParams.length === 0) {
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return null;
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}
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let keywordToken = keyword + '=';
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let urlParts = this.urlParams.split (this.separator);
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for (let i = 0; i < urlParts.length; i++) {
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let urlPart = urlParts[i];
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if (urlPart.startsWith (keywordToken)) {
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return urlPart.substr (keywordToken.length);
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}
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}
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return null;
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}
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};
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OV.CreateUrlBuilder = function ()
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{
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return new OV.ParameterListBuilder ('$');
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};
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OV.CreateUrlParser = function (urlParams)
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{
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return new OV.ParameterListParser (urlParams, '$');
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};
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OV.CreateUrlParameters = function (urls, camera)
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{
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let builder = OV.CreateUrlBuilder ();
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builder.AddModelUrls (urls);
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builder.AddCamera (camera);
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return builder.GetUrlParams ();
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};
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