ecda96a36f
removed unneeded Min call
2019-02-14 14:23:50 +00:00
e225e9a1ef
corrected comment
2019-02-14 14:23:50 +00:00
13171c409b
using Lerp
2019-02-14 14:23:50 +00:00
23168ee324
remove local var
2019-02-14 14:23:50 +00:00
44d030b9ca
normalising before getting bigger/smaller
2019-02-14 14:23:50 +00:00
b06a31baa3
Removed Diameter function
2019-02-14 14:23:50 +00:00
4c6d061455
added rect-circle intersection functions
2019-02-14 14:23:50 +00:00
16722d55e1
not exporting circle size comparisons
2019-02-14 14:22:52 +00:00
ee24eeb67d
fixed circle.Intersect
2019-02-14 14:22:52 +00:00
5072f34b91
Added Circle geometry and tests
2019-02-14 14:22:52 +00:00
2e0da4f44a
#159 Another reduction of Simplify Matrix.Unproject formulas
2019-02-12 21:06:37 +01:00
b0ed22e0ec
#159 Simplify Matrix.Unproject formulas
2019-02-12 21:00:05 +01:00
1e19db5b25
#159 Add test case when matrix determinant is not 1
2019-02-12 18:40:15 +01:00
cabaee680e
#159 Fix unproject for rotated matrix
2019-02-12 14:57:03 +01:00
8d20deea05
update MouseEntered to MouseInsideWindow
2019-01-21 17:13:51 -05:00
e7a625f5d2
updated Floor method
2019-01-20 10:00:35 -05:00
d3f6331240
Adding a pixel.Vec Floor method to geometry.go
2019-01-20 09:56:30 -05:00
abfdf18fb6
fix typo for matrix
2018-09-05 12:53:25 +09:00
721a10ef10
add Vec.Project
2017-10-15 19:50:41 +02:00
c87741300d
add pixel.Unit
2017-10-15 19:43:12 +02:00
62cefc262e
add pixel.Clamp
2017-10-15 19:42:13 +02:00
ce09bb1114
fix Matrix.Chained (wrong order of composition)
2017-09-04 00:40:12 +02:00
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
Ben Cragg
Jacek Olszak
Stephen Michaelis
NaniteFactory
faiface
Alex
Seebs