StackGenVis: Alignment of Data, Algorithms, and Models for Stacking Ensemble Learning Using Performance Metrics
https://doi.org/10.1109/TVCG.2020.3030352
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68 lines
1.6 KiB
68 lines
1.6 KiB
"use strict"
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var vectorizeText = require("vectorize-text")
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module.exports = getGlyph
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var GLYPH_CACHE = {}
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function getGlyph(symbol, font, pixelRatio) {
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var fontCache = GLYPH_CACHE[font]
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if(!fontCache) {
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fontCache = GLYPH_CACHE[font] = {}
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}
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if(symbol in fontCache) {
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return fontCache[symbol]
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}
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var config = {
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textAlign: "center",
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textBaseline: "middle",
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lineHeight: 1.0,
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font: font,
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lineSpacing: 1.25,
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styletags: {
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breaklines:true,
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bolds: true,
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italics: true,
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subscripts:true,
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superscripts:true
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}
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}
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//Get line and triangle meshes for glyph
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config.triangles = true
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var triSymbol = vectorizeText(symbol, config)
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config.triangles = false
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var lineSymbol = vectorizeText(symbol, config)
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var i, j
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if(pixelRatio && pixelRatio !== 1) {
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for(i = 0; i < triSymbol.positions.length; ++i){
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for(j = 0; j < triSymbol.positions[i].length; ++j){
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triSymbol.positions[i][j] /= pixelRatio;
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}
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}
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for(i = 0; i < lineSymbol.positions.length; ++i){
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for(j = 0; j < lineSymbol.positions[i].length; ++j){
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lineSymbol.positions[i][j] /= pixelRatio;
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}
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}
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}
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//Calculate bounding box
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var bounds = [[Infinity,Infinity], [-Infinity,-Infinity]]
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var n = lineSymbol.positions.length
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for(i = 0; i < n; ++i) {
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var p = lineSymbol.positions[i]
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for(j=0; j<2; ++j) {
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bounds[0][j] = Math.min(bounds[0][j], p[j])
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bounds[1][j] = Math.max(bounds[1][j], p[j])
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}
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}
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//Save cached symbol
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return fontCache[symbol] = [triSymbol, lineSymbol, bounds]
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} |