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https://github.com/hajimehoshi/ebiten.git
synced 2024-12-25 03:08:54 +01:00
parent
5e15bafde8
commit
c34c072efa
@ -212,6 +212,7 @@ func drawArc(screen *ebiten.Image, count int, aa bool, line bool) {
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x := cx + r*math.Cos(theta1)
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y := cy + r*math.Sin(theta1)
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path.ArcTo(450, 100, float32(x), float32(y), 30)
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path.LineTo(float32(x), float32(y))
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theta2 := math.Pi * float64(count) / 180 / 3
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path.MoveTo(550, 100)
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@ -248,7 +248,8 @@ func cross(p0, p1 point) float32 {
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return p0.x*p1.y - p1.x*p0.y
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}
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// ArcTo adds an arc curve to the path. (x1, y1) is the control point, and (x2, y2) is the destination.
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// ArcTo adds an arc curve to the path.
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// (x1, y1) is the first control point, and (x2, y2) is the second control point.
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func (p *Path) ArcTo(x1, y1, x2, y2, radius float32) {
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p0, ok := p.currentPosition()
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if !ok {
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@ -264,7 +265,6 @@ func (p *Path) ArcTo(x1, y1, x2, y2, radius float32) {
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}
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if d0 == (point{}) || d1 == (point{}) {
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p.LineTo(x1, y1)
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p.LineTo(x2, y2)
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return
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}
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@ -300,8 +300,6 @@ func (p *Path) ArcTo(x1, y1, x2, y2, radius float32) {
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dir = Clockwise
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}
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p.Arc(cx, cy, radius, a0, a1, dir)
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p.LineTo(x2, y2)
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}
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// Arc adds an arc to the path.
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