qglyphSector <- function(x,y,length,width,startAngle,sweepLength){
len <- (length+width)*2
r <- length+width
x0 <- x-r
y0 <- y-r
glyph <- Qt$QPainterPath()
movex <- x+r*cos(startAngle/180*pi)
movey <- y+r*sin(startAngle/180*pi)
glyph$moveTo(movex,movey)
glyph$arcTo(x0,y0,len,len,-startAngle,-sweepLength)
r <- r-width
x0 <- x-r
y0 <- y-r
## movex <- x+r*cos((startAngle+sweepLength)/180*pi)
## movey <- y+r*sin((startAngle+sweepLength)/180*pi)
##glyph$lineTo(movex,movey)
glyph$arcTo(x0,y0,2*r,2*r,-(startAngle+sweepLength),sweepLength)
glyph$closeSubpath()
glyph
}
qglyphArc <- function(x,y,r,startAngle,sweepLength){
x0 <- x-r
y0 <- y-r
len <- 2*r
glyph <- Qt$QPainterPath()
movex <- x+r*cos(startAngle/180*pi)
movey <- y+r*sin(startAngle/180*pi)
glyph$moveTo(movex,movey)
glyph$arcTo(x0,y0,len,len,-startAngle,-sweepLength)
glyph
}
## s <- qscene()
## paths <- qglyphArc(0,0,100,60,60)
## myfun <- function(layer,painter){
## qdrawPath(painter,paths)
## }
## l <- qlayer(s,myfun,limits=qrect(-140,-140,140,140))
## v <- qplotView(s)
## v$show()
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