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authorYan Zhou <zhouyan@users.noreply.github.com>2017-02-02 02:00:34 +0800
committerGitHub <noreply@github.com>2017-02-02 02:00:34 +0800
commit0fd89868855c3c7038fcc736b0448b7f6e8c8662 (patch)
tree58eb5ccc57e774a980158638fbd246b8a79a6b21 /src
parent08060160fcde7a2f07fbf10260d3d2efe155f6c0 (diff)
downloadluaotfload-0fd89868855c3c7038fcc736b0448b7f6e8c8662.tar.gz
Fix calculation of database optical sizes
The conversion from reported design size etc., to "true `sp` value" is actually converting from `bp` to `pt`.
Diffstat (limited to 'src')
-rw-r--r--src/luaotfload-database.lua10
1 files changed, 5 insertions, 5 deletions
diff --git a/src/luaotfload-database.lua b/src/luaotfload-database.lua
index 4a71d34..5e4fd7a 100644
--- a/src/luaotfload-database.lua
+++ b/src/luaotfload-database.lua
@@ -1049,8 +1049,8 @@ do
--- cf. TeXbook p. 57
local dimens = {
pt = function (v) return v end,
- bp = function (v) return (v * 7200) / 7227 end,
- dd = function (v) return (v * 1157) / 1238 end,
+ bp = function (v) return (v * 7227) / 7200 end,
+ dd = function (v) return (v * 1238) / 1157 end,
}
design_size_dimension = dimens.bp
@@ -1367,9 +1367,9 @@ local get_size_info do --- too many upvalues :/
design_range_top = ((design_range_top or fallback_size) * 2^16) / 10
design_range_bottom = ((design_range_bottom or fallback_size) * 2^16) / 10
- design_size = (design_size * 7200) / 7227
- design_range_top = (design_range_top * 7200) / 7227
- design_range_bottom = (design_range_bottom * 7200) / 7227
+ design_size = (design_size * 7227) / 7200
+ design_range_top = (design_range_top * 7227) / 7200
+ design_range_bottom = (design_range_bottom * 7227) / 7200
return {
design_size, design_range_top, design_range_bottom,