Help needed for Pie chart rendering

Question

Hi All,
I have a question related with pie chart rendering. I tried this example with manual node creation. This worked fine for me. After that i tried to change using array concept. But i held up with one issue.
var mySeq = [50, 100, 75];
var angleSeq = [0, 80, 240]
var angle = 360;
var total = 225
The Arc length is calculated as 0-80, 80-240, 240-360 respectively.
So created another
My the Arc creation code is looking like that,
For (i in mySeq)
Arc {
centerX: 200
centerY: 200
radiusX: 200
radiusY: 200
startAngle: ? // For first this should be 0, second 80 and third 240
length: (i*angle)/total //For first 80, second 160 and third 120
type: ArcType.ROUND
fill: Color.BLACK
How to define the startAngle dynamically. I tried with another array like
For (I in mySeq, j in angleSeq). Then I bind the value of j to startAngle. But no positive result for me.
Can anyone help me on this issue?
This is my first try with JavaFX. So i want to finish this successfully. Please help me

Answer 1

Try this:
var mySeq = [50, 100, 75];
var angleSeq = [0, 80, 240];
var angle = 360;
var total = 225;
for (i in mySeq) {
    for( j in angleSeq ){
        Arc {
            startAngle: j
            length: (i * angle) / total //For first 80, second 160 and third 120
            type: ArcType.ROUND
            fill: Color.BLACK
}or
var N = 3;
for (n in [0..N-1])
        Arc {
            startAngle: angleSeq[n]
            length: (mySeq[n] * angle) / total //For first 80, second 160 and third 120
            type: ArcType.ROUND
            fill: Color.BLACK
        }