func drawKey(t *ebiten.Image, name string, x, y, width int) {
const height = 16
width--
c := color.White
t.DrawLine(x, y+3, x, y+height-3, c)
t.DrawLine(x+width-1, y+3, x+width-1, y+height-3, c)
t.DrawLine(x+3, y, x+width-3, y, c)
t.DrawLine(x+3, y+height-1, x+width-3, y+height-1, c)
t.DrawLine(x, y+3, x+3, y, c)
t.DrawLine(x+width-4, y, x+width-1, y+3, c)
t.DrawLine(x, y+height-4, x+3, y+height-1, c)
t.DrawLine(x+width-1, y+height-4, x+width-4, y+height-1, c)
common.ArcadeFont.DrawText(t, name, x+4, y+5, 1, color.White)
}
func update(screen *ebiten.Image) error {
for i := 0; i < 6; i++ {
screen.DrawRect(2*i, 2*i, 100, 100, color.NRGBA{0x80, 0x80, 0xff, 0x80})
}
screen.DrawFilledRect(10, 10, 100, 100, color.NRGBA{0x80, 0x80, 0xff, 0x80})
screen.DrawFilledRect(20, 20, 100, 100, color.NRGBA{0x80, 0x80, 0xff, 0x80})
screen.DrawLine(130, 0, 140, 100, color.NRGBA{0xff, 0x80, 0x80, 0x80})
screen.DrawLine(140, 0, 150, 100, color.NRGBA{0xff, 0x80, 0x80, 0x80})
shape.DrawEllipse(screen, 0, 0, 200, 200, color.NRGBA{0x80, 0xff, 0x80, 0x80})
//shape.DrawArc(screen, 0, 0, 50, 50, 0, math.Pi/2, color.NRGBA{0xff, 0x80, 0x80, 0x80})
return nil
}