class Gcp{
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constructor(text){
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this.text = text;
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}
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// Scale the image location of GPCs
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// according to the values specified in the map
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// @param imagesRatioMap {Object} object in which keys are image names and values are scaling ratios
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// example: {'DJI_0018.jpg': 0.5, 'DJI_0019.JPG': 0.25}
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// @return {Gcp} a new GCP object
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resize(imagesRatioMap, muteWarnings = false){
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// Make sure dict is all lower case and values are floats
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let ratioMap = {};
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for (let k in imagesRatioMap) ratioMap[k.toLowerCase()] = parseFloat(imagesRatioMap[k]);
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const lines = this.text.split(/\r?\n/);
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let output = "";
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if (lines.length > 0){
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output += lines[0] + '\n'; // coordinate system description
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for (let i = 1; i < lines.length; i++){
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let line = lines[i].trim();
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if (line !== "" && line[0] !== "#"){
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let parts = line.split(/\s+/);
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if (parts.length >= 6){
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let [x, y, z, px, py, imagename, ...extracols] = parts;
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let ratio = ratioMap[imagename.toLowerCase()];
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px = parseFloat(px);
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py = parseFloat(py);
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if (ratio !== undefined){
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px *= ratio;
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py *= ratio;
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}else{
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if (!muteWarnings) console.warn(`${imagename} not found in ratio map. Are you missing some images?`);
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}
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let extra = extracols.length > 0 ? ' ' + extracols.join(' ') : '';
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output += `${x} ${y} ${z} ${px.toFixed(8)} ${py.toFixed(8)} ${imagename}${extra}\n`;
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}else{
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if (!muteWarnings) console.warn(`Invalid GCP format at line ${i}: ${line}`);
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output += line + '\n';
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}
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}
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}
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}
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return new Gcp(output);
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}
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toString(){
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return this.text;
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}
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}
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module.exports = Gcp;
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