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author | Robert Vollmert <rvollmert@gmx.net> | 2009-10-31 17:25:39 +0100 |
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committer | Robert Vollmert <rvollmert@gmx.net> | 2009-11-01 21:45:25 +0100 |
commit | d106005da5f41332ac26febe398adb0d5bb61de0 (patch) | |
tree | d3c80bc9503f4c4bc01848ad2eb6333edf1122a8 /crawl-ref/source/geom2d.h | |
parent | 5dcf2e450126f680b8c58f3921857c025803a34a (diff) | |
download | crawl-ref-d106005da5f41332ac26febe398adb0d5bb61de0.tar.gz crawl-ref-d106005da5f41332ac26febe398adb0d5bb61de0.zip |
Make nextcell and movehalfcell methods of geom::ray.
Seems sensible given they modify the ray, even if it's not really
something intrinsic to a ray.
Diffstat (limited to 'crawl-ref/source/geom2d.h')
-rw-r--r-- | crawl-ref/source/geom2d.h | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/crawl-ref/source/geom2d.h b/crawl-ref/source/geom2d.h index 37b62745df..f1e2310bf4 100644 --- a/crawl-ref/source/geom2d.h +++ b/crawl-ref/source/geom2d.h @@ -31,6 +31,7 @@ struct form // A ray in two-dimensional space given by starting point // and direction vector. // The points of R are start + t*dir. +struct grid; struct ray { vector start; @@ -42,6 +43,8 @@ struct ray vector shoot(double t) const; void advance(double t); + void move_half_cell(const grid &g); + bool to_next_cell(const grid& g); }; // A line in two-dimensional space as the preimage of a number @@ -76,8 +79,6 @@ struct grid double intersect(const ray &r, const line &l); double nextintersect(const ray &r, const lineseq &ls); -bool nextcell(ray &r, const grid &g); -void movehalfcell(ray &r, const grid &g); } |