zeni/go-chart
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pie charts!

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This commit is contained in:
Will Charczuk 2016-07-28 02:34:44 -07:00
parent ec4d92fc5e
commit c17c9a4bb4
10 changed files with 485 additions and 45 deletions
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9
vector_renderer.go
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@ -76,6 +76,15 @@ func (vr *vectorRenderer) LineTo(x, y int) {
vr.p = append(vr.p, fmt.Sprintf("L %d %d", x, y))
}
// QuadCurveTo draws a quad curve.
func (vr *vectorRenderer) QuadCurveTo(cx, cy, x, y int) {
vr.p = append(vr.p, fmt.Sprintf("Q%d,%d %d,%d", cx, cy, x, y))
}
func (vr *vectorRenderer) ArcTo(cx, cy int, rx, ry, startAngle, delta float64) {
vr.p = append(vr.p, fmt.Sprintf("A %d %d %0.2f 1 1 %d %d", int(rx), int(ry), delta, cx, cy))
}
// Close closes a shape.
func (vr *vectorRenderer) Close() {
vr.p = append(vr.p, fmt.Sprintf("Z"))