Method arcImpl

core/src/processing/javafx/PGraphicsFX2D.java:818–857

(float x, float y, float w, float h,
                         float start, float stop, int mode)

  @Override
  protected void arcImpl(float x, float y, float w, float h,
                         float start, float stop, int mode) {
    beforeContextDraw();

    if (drawingThinLines()) {
      x += 0.5f;
      y += 0.5f;
    }

    // 0 to 90 in java would be 0 to -90 for p5 renderer
    // but that won't work, so -90 to 0?
    start = -start;
    stop = -stop;

    float sweep = stop - start;

    // The defaults, before 2.0b7, were to stroke as Arc2D.OPEN, and then fill
    // using Arc2D.PIE. That's a little wonky, but it's here for compatability.
    ArcType fillMode = ArcType.ROUND;  // Arc2D.PIE
    ArcType strokeMode = ArcType.OPEN;

    if (mode == OPEN) {
      fillMode = ArcType.OPEN;

    } else if (mode == PIE) {
      strokeMode = ArcType.ROUND;  // PIE

    } else if (mode == CHORD) {
      fillMode = ArcType.CHORD;
      strokeMode = ArcType.CHORD;
    }

    if (fill) {
      context.fillArc(x, y, w, h, PApplet.degrees(start), PApplet.degrees(sweep), fillMode);
    }
    if (stroke) {
      context.strokeArc(x, y, w, h, PApplet.degrees(start), PApplet.degrees(sweep), strokeMode);
    }
  }