7c5e5588e2
fix Vec.Normal to rotate by pi/2, not -pi/2
2017-08-29 20:23:32 +02:00
3e3a9aaa48
fix operation order for rectangle resize function, add tests
2017-07-29 00:40:06 +12:00
e64d97efb1
fix Rect.Intersect
2017-07-05 20:36:25 +02:00
da52aa25ec
clarify Rect.Intersect doc
2017-07-05 19:58:09 +02:00
69d4a37e5e
add Rect.Intersect
2017-07-05 19:54:30 +02:00
2b9b4d07c4
add Rect.Area
2017-07-05 19:54:18 +02:00
886e7fa22a
another minor code style change
2017-06-11 14:14:02 +02:00
99a43ec1a9
minor code style change
2017-06-11 14:06:45 +02:00
d4cd1c33e2
one more tiny doc change
2017-06-11 01:18:23 +02:00
51cd0314d5
minor doc changes
2017-06-11 01:17:37 +02:00
daedc45ea9
Improve normal calculations
...
Soooo. It turns out that the bunch of smallish (~4-5% of runtime)
loads associated with Len(), Unit(), Rotated(), and so on... Were
actually more like 15% or more of computational effort. I first
figured this out by creating:
func (u Vec) Normal(v Vec) Vec
which gives you a vector normal to u->v. That consumed a lot
of CPU time, and was followed by .Unit().Scaled(imd.thickness / 2),
which consumed a bit more CPU time.
After some poking, and in the interests of avoiding UI cruft,
the final selection is
func (u Vec) Normal() Vec
This returns the vector rotated 90 degrees, which turns out to
be the most common problem.
2017-06-10 17:55:16 -05:00
c0766504e3
minor, mostly stylistic, changes
2017-06-09 18:13:05 +02:00
c321515d3c
Simplify Matrix math, use 6-value affine matrixes.
...
It turns out that affine matrices are much simpler than the 3x3 matrices
they imply, and we can use this to dramatically streamline some code.
For a test program, this was about a 50% gain in frame rate just from
the cost of the applyMatrixAndMask calls in imdraw, which were calling
matrix.Project() many times. Simplifying matrix.Project, alone, got a
nearly 50% frame rate boost!
Also modify pixelgl's SetMatrix to copy the six values of a 3x2
Affine into the corresponding locations of a 3x3 matrix.
2017-06-09 10:37:43 -05:00
b8a287a654
clarify Rect doc
2017-05-21 19:38:21 +02:00
523e6d3e9a
fix Matrix doc
2017-05-21 19:30:29 +02:00
fcfeb200b6
replace complex128 Vec with a struct
2017-05-21 19:25:06 +02:00
fdddde2780
accept zero target size in Rect.Resized
2017-05-15 01:15:16 +02:00
1619373062
add Rect.Union
2017-05-05 15:43:24 +02:00
8030595373
simplify code in Rect.Resized
2017-04-13 15:26:48 +02:00
9472b91565
fix grammar in Vec doc
2017-04-13 15:18:13 +02:00
b41e117ac6
fix Matrix.String
2017-04-04 14:10:39 +02:00
49338251d2
add Matrix.String
2017-04-04 14:08:37 +02:00
b135012115
minor change
2017-04-04 14:02:39 +02:00
5d98f28ca0
remove auto norm from R (Rect constructor)
2017-03-25 19:45:11 +01:00
4bebc7e6e4
add Vec.WithX/WithY and Rect.WithMin/WithMax
2017-03-23 19:27:39 +01:00
4619398b9e
fix 0 vector len + fix imdraw polyline
2017-03-23 19:15:06 +01:00
bec6bdca6a
add Matrix.Chained
2017-03-19 00:08:46 +01:00
2e8f5fb05a
remove Vec.YX because it's unreadable
2017-03-18 11:55:01 +01:00
31d4f08173
add Vec.YX
2017-03-18 11:34:31 +01:00
1f6d186539
fix another two misspells
2017-03-16 00:47:50 +01:00
6df99cdb35
fix many bugs in doc
2017-03-15 19:40:39 +01:00
7d1f685d4b
clarify doc
2017-03-15 00:15:02 +01:00
a614c3020c
fix doc
2017-03-14 23:01:24 +01:00
da0eb85c4b
fix doc
2017-03-14 23:01:08 +01:00
c81dedd9a1
add Rect.Size
2017-03-14 18:25:39 +01:00
be276888f6
fix doc
2017-03-14 16:19:58 +01:00
b3e5e9f902
consistently rename Matrix.Move -> Moved
2017-03-14 13:35:24 +01:00
a2b9bb5b5a
add X and Y vector constructors
2017-03-14 13:27:18 +01:00
fa57a41d2a
make doc more readable
2017-03-14 13:20:26 +01:00
35a14c2d18
rename ZM -> IM
2017-03-14 13:15:53 +01:00
203adc914b
change Rect to have Min, Max instead of Pos, Size
2017-03-13 23:52:34 +01:00
f0394ec7d1
replace Transform by much simpler Matrix
2017-03-06 19:58:24 +01:00
28f0f01173
add Lerp function
2017-03-05 11:47:18 +01:00
77c39d03c7
rename Vec.Apply -> Vec.Map
2017-03-01 23:13:14 +01:00
a7fdbd618e
add Vec.Apply
2017-03-01 23:12:48 +01:00
7974f86c4a
add Rect.Contains(Vec) bool method
2017-02-25 18:38:22 +01:00
bc97fa00b8
improve doc in pixel
2017-01-25 18:55:17 +01:00
9096277914
normalized most of lines to <=100 chars
2016-12-30 17:43:26 +01:00
c8ee45dd4f
add Rect
2016-12-05 23:19:31 +01:00
12575af796
rename vec.go to geometry.go (stuff coming)
2016-12-05 22:56:16 +01:00
faiface
Alex
Seebs