zeni/go-chart
1
0
Fork 0
Code Issues Pull requests Projects Releases 2 Packages Wiki Activity Actions

can rotate text + add y axis names

Browse source
This commit is contained in:
Will Charczuk 2016-08-06 21:59:46 -07:00
parent 3607d732d9
commit 718678b421
34 changed files with 102 additions and 20 deletions
Download patch file Download diff file Expand all files Collapse all files

8
drawing/matrix.go
View file

@ -161,10 +161,10 @@ func (tr *Matrix) Translate(tx, ty float64) {
tr[5] = ty*tr[3] + tx*tr[1] + tr[5]
}
// Rotate adds a rotation to the matrix. angle is in radian
func (tr *Matrix) Rotate(angle float64) {
c := math.Cos(angle)
s := math.Sin(angle)
// Rotate adds a rotation to the matrix.
func (tr *Matrix) Rotate(radians float64) {
c := math.Cos(radians)
s := math.Sin(radians)
t0 := c*tr[0] + s*tr[2]
t1 := s*tr[3] + c*tr[1]
t2 := c*tr[2] - s*tr[0]