Overlaps and anisotropic filtering#22

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izzyreal wants to merge 35 commits intomasterfrom

overlaps-and-anisotropic-filtering

Commits on May 9, 2012

Geometry code to check for arc (and segment) intersections. Runs, but not tested yet.
Maysum Panju
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Commits on May 11, 2012

Revised arc interesection detection functions. Does not always work if intersection is at an endpoint, though.
Maysum Panju
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Commits on May 16, 2012

Intersection check of segment interior with endpoints should work.
Maysum Panju
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Commits on May 17, 2012

Changed intersect functions to return intersection points, rather than boolean values. Lots of assumptions, e.g. at most one intersection point. Known bug: problem if arc intersects segment at arc …
Maysum Panju
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Commits on May 18, 2012

Removed glyph-overlap attempt; will have to restart with new approach.
Maysum Panju
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Added a check for arc endpoint/segment intersection.
mhpanju
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Commits on May 22, 2012

Commits on May 23, 2012

Rearrange contours works, sorts contours by some intersection rule.
Maysum Panju
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Commits on May 24, 2012

Moved code around; rearranging endpoints now done in glyphy-blob. Contour intersection now checks roughly before doing too many calculations.
Maysum Panju
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Commits on May 29, 2012

Started work on processing intersecting contours in stages. Not complete yet!
Maysum Panju
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Commits on May 30, 2012

Intersecting contours work! Kind of. Outlines on overlap regions are still visible, and coinciding contours seems to fail.
Maysum Panju
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Commits on May 31, 2012

Outlines work properly in intersecting contours!!! Just need to fix a with cedilla case.
Maysum Panju
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Commits on Jun 1, 2012

Simple code cleanup. No major change
Maysum Panju
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Commits on Jun 4, 2012

Commits on Jun 5, 2012

Added support for solid edges between vertices. The same framework can be used to add dotted edges soon.
Maysum Panju
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Commits on Jun 6, 2012

Dotted edges are now formed between contours that surround/contain each other.
Maysum Panju
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Commits on Jun 8, 2012

No functional change, but started setting up for collapsed dotted edges.
Maysum Panju
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Dotted edges are collapsed and the relevant vertices are merged in the contour relationship graph.
Maysum Panju
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Commits on Jun 12, 2012

Handled cases where a cell is completely within one contour group, but contains other contours passing through it.
Maysum Panju
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Commits on Jun 13, 2012

Partition now chosen using the graph algorithm. Edges are repeated after merge, though. Requires bipartite graphs.
Maysum Panju
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Commits on Jun 14, 2012

Edges in the new graph are no longer repeated.
Maysum Panju
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Small floating point fix to help coincident outlines keep working.
Maysum Panju
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Commits on Jun 15, 2012

Fixed missing edge bug (very rare - need coincident points), and general code cleanup.
Maysum Panju
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Commits on Jun 19, 2012

Minor. Some light code cleanup; added some comments.
Maysum Panju
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Commits on Jun 20, 2012

Modified glyphy_sdf to keep track of vector to nearest contour. Still not correct for line segments, and does not use this stored value.
Maysum Panju
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Commits on Jun 25, 2012

Subpixel rendering - Some progress on min_dist_vector returned by glyphy_sdf, but still not perfect at corners.
Maysum Panju
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Commits on Jun 26, 2012

SDF now has min_dist_vector with some nice shading, and functions now compartmentalized in glyphy_sdf somewhat, but a seaming bug is back, and vector sometimes points backwards.
Maysum Panju
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Commits on Jun 27, 2012

Merged repeated code into a single "find_min_dist" function in glyphy-sdf. Still have seams. :-(
Maysum Panju
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Commits on Jun 28, 2012

The sdf vector now points in the correct direction... but seams still there!!
Maysum Panju
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Commits on Jun 29, 2012

Minor fix.. but SEAMS ARE GONE. Smooth outlines, yessir.
Maysum Panju
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Commits on Jul 4, 2012

Added TestFont with some bad examples; some colour revamp for sdf.
Maysum Panju
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Some work on anisotrpic antialias
Maysum Panju
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Commits on Jul 9, 2012

Enable anisotropic antialiasing: apply P_inverse to shortest vector when scaling.
Maysum Panju
committed