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Test file sizes in make_image script #392

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Merged
linev merged 1 commit into from
Feb 4, 2026
Merged

Test file sizes in make_image script #392

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21 changes: 16 additions & 5 deletions demo/node/make_image.js
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Original file line number Diff line number Diff line change
Expand Up @@ -13,23 +13,34 @@ let outdir = '';
if (process?.argv && process.argv[2])
outdir = process.argv[2];

function processResults(name, title, svg, pdf, png) {
function processResults(name, title, svg, svg_ref, svg_diff,
pdf, pdf_ref, pdf_diff,
png, png_ref, png_diff) {
console.log(`${title} ${name}.svg ${svg.length} ${name}.pdf ${pdf.byteLength} ${name}.png ${png.byteLength}`);

if (svg.length)
writeFileSync(`${outdir+name}.svg`, svg);
else
console.error(`Fail to create SVG for ${title}`);

if (Math.abs(svg.length - svg_ref) > svg_diff)
console.error(`${name}.svg length ${svg.length} differs too much from reference ${svg_ref}`);

if (pdf.byteLength)
writeFileSync(`${outdir+name}.pdf`, pdf);
else
console.error(`Fail to create PDF for ${title}`);

if (Math.abs(pdf.byteLength - pdf_ref) > pdf_diff)
console.error(`${name}.pdf length ${pdf.byteLength} differs too much from reference ${pdf_ref}`);

if (png.byteLength)
writeFileSync(`${outdir+name}.png`, png);
else
console.error(`Fail to create PNG for ${title}`);

if (Math.abs(png.byteLength - png_ref) > png_diff)
console.error(`${name}.png length ${png.byteLength} differs too much from reference ${png_ref}`);
}


Expand All @@ -48,26 +59,26 @@ const svg1 = await makeSVG({ object: hpxpy, option: 'col', width, height }),
pdf1buf = await makeImage({ format: 'pdf', as_buffer: true, object: hpxpy, option: 'col', width, height }),
png1buf = await makeImage({ format: 'png', as_buffer: true, object: hpxpy, option: 'col', width, height });

processResults('hist2d', 'histogram col drawing', svg1, pdf1buf, png1buf);
processResults('hist2d', 'histogram col drawing', svg1, 13179, 100, pdf1buf, 33456, 500, png1buf, 56707, 20000);

// testing 3D graphics
const svg2 = await makeSVG({ object: hpxpy, option: 'lego2', width, height }),
pdf2buf = await makeImage({ format: 'pdf', as_buffer: true, object: hpxpy, option: 'lego2', width, height }),
png2buf = await makeImage({ format: 'png', as_buffer: true, object: hpxpy, option: 'lego2', width, height });

processResults('lego', 'histogram lego drawing', svg2, pdf2buf, png2buf);
processResults('lego', 'histogram lego drawing', svg2, 57225, 20000, pdf2buf, 3086057, 1000000, png2buf, 88824, 30000);

// testing geometry
const svg3 = await makeSVG({ object: geom, option: '', width, height }),
pdf3buf = await makeImage({ format: 'pdf', as_buffer: true, object: geom, option: '', width, height }),
png3buf = await makeImage({ format: 'png', as_buffer: true, object: geom, option: '', width, height });

processResults('geom', 'geometry drawing', svg3, pdf3buf, png3buf);
processResults('geom', 'geometry drawing', svg3, 92099, 20000, pdf3buf, 68967, 20000, png3buf, 68967, 20000);

// testing latex with special symbols
const svg4 = await makeSVG({ object: latex, option: '', width, height }),
pdf4buf = await makeImage({ format: 'pdf', as_buffer: true, object: latex, option: '', width, height }),
png4buf = await makeImage({ format: 'png', as_buffer: true, object: latex, option: '', width, height });

processResults('latex', 'Canvas with latex and symbols.ttf', svg4, pdf4buf, png4buf);
processResults('latex', 'Canvas with latex and symbols.ttf', svg4, 5608, 100, pdf4buf, 9388, 500, png4buf, 41620, 15000);