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I need to render chemical formulas (via HTML Canvas fillText). Such formulas contain numeric subscripts to denote the multiplicity of an element: $H_2O$, $F_2$. The question is: how to compute ideal shifts for those subscripts, such that the subscript of F is rendered closer to the glyph than in the case of H. I believe fonts may contain some information about this. Could I (partially) solve this problem using OpenType.js?
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I need to render chemical formulas (via HTML Canvas fillText). Such formulas contain numeric subscripts to denote the multiplicity of an element:$H_2O$ , $F_2$ . The question is: how to compute ideal shifts for those subscripts, such that the subscript of
Fis rendered closer to the glyph than in the case ofH. I believe fonts may contain some information about this. Could I (partially) solve this problem using OpenType.js?Beta Was this translation helpful? Give feedback.
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