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path: root/source/fitz/draw-path.c
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2014-08-19don't render non-empty dashing with zero-length phaseSimon Bünzli
Adobe Reader and Microsoft XPS viewer differ in their handling of non-empty dashed strokes where the phase is 0: Adobe Reader considers these to be faulty and omits them while Microsoft XPS Viewer renders them the same as an empty dash (i.e. solid). This patch makes Fitz no longer render such strokes and ensures that MuXPS never emits them so that the desired behavior results (this is the easier implementation since XPS rendering code renders stroked paths in a single location whereas PDF rendering does it all over the place). See https://code.google.com/p/sumatrapdf/issues/detail?id=2339 for a testcase.
2014-01-13Avoid rendering errors caused by linejoins on tiny distances.Robin Watts
If we perform a linejoin that ends up being over an impossibly small distance, we can get a rendering error. This is caused by trying to calculate scale = linewidth/sqrtf(len), where len < FLT_EPSILON. Avoid this by rearranging the code slightly - no extra calculations required. Also given that sn == bn at all times within the stroking code, just remove bn. Credit for spotting this problem goes to Simon for tracking the problem with rounding_artifact_due_to_closepath.pdf. My fix just fixes the problem at a lower level than his does.
2013-09-30Bug 694526: Spot non-invertable matrices and bale before strokingRobin Watts
The bug fix added in the previous commit fails to work in this case (hang-9527.pdf) because the matrix is not invertible and hence the clipping rectangle ends up infinite. Spot this case here and return early.
2013-09-30Bug 694526: Fix hang in stroking path.Robin Watts
The first file of this bug (hang-66.pdf) hangs while stroking a VERY long line segment; so long that 'used' is sufficinetly large that: used += dash_segment_len doesn't result in a change in the value of used. The fix is to clip strokes to the edge of the gel's clip area, meaning that this should never occur.
2013-09-13Fix various compile warnings spotted by the cluster.Robin Watts
2013-09-08Separate command and coordinate arrays in fz_path structure.Tor Andersson
2013-06-20Rearrange source files.Tor Andersson