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31 lines
621 B
Plaintext
31 lines
621 B
Plaintext
/**
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* Pie Chart
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*
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* Uses the arc() function to generate a pie chart from the data
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* stored in an array.
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*/
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int[] angles = { 30, 10, 45, 35, 60, 38, 75, 67 };
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void setup() {
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size(640, 360);
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noStroke();
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noLoop(); // Run once and stop
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}
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void draw() {
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background(100);
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pieChart(300, angles);
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}
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void pieChart(float diameter, int[] data) {
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float lastAngle = 0;
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for (int i = 0; i < data.length; i++) {
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float gray = map(i, 0, data.length, 0, 255);
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fill(gray);
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arc(width/2, height/2, diameter, diameter, lastAngle, lastAngle+radians(angles[i]));
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lastAngle += radians(angles[i]);
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}
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}
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