Fix 180deg ‘convertTransform’

Fix NaN after Math.acos due to error making illegal value out of bounds Fix #1101
svg · Jul 14, 2019 · e1dd31c · e1dd31c
1 parent 8671c4c
commit e1dd31c
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diff --git a/plugins/_transforms.js b/plugins/_transforms.js
@@ -153,7 +153,8 @@ exports.matrixToTransform = function(transform, params) {
             sy = (data[3] < 0 ? -1 : 1) * Math.hypot(data[1], data[3]);
             transforms.push({ name: 'scale', data: [sx, sy] });
         }
-        var rotate = [mth.acos(data[0] / sx, floatPrecision) * ((scaleBefore ? 1 : sy) * data[1] < 0 ? -1 : 1)];
+        var angle = Math.min(Math.max(-1, data[0] / sx), 1),
+            rotate = [mth.acos(angle, floatPrecision) * ((scaleBefore ? 1 : sy) * data[1] < 0 ? -1 : 1)];
 
         if (rotate[0]) transforms.push({ name: 'rotate', data: rotate });
 

diff --git a/test/plugins/convertTransform.03.svg b/test/plugins/convertTransform.03.svg