Example usage for javafx.scene.canvas GraphicsContext strokeOval

Introduction

In this page you can find the example usage for javafx.scene.canvas GraphicsContext strokeOval.

Prototype

public void strokeOval(double x, double y, double w, double h) 

Source Link

Document

Strokes an oval using the current stroke paint.

Usage

From source file:qupath.lib.gui.plots.ScatterPlot.java

public void drawPlot(GraphicsContext g, Rectangle2D region, int maxPoints) {

    g.save();/*from   w  w w. ja v  a2 s  .c o  m*/

    g.beginPath();
    g.moveTo(region.getMinX(), region.getMinY());
    g.lineTo(region.getMaxX(), region.getMinY());
    g.lineTo(region.getMaxX(), region.getMaxY());
    g.lineTo(region.getMinX(), region.getMaxY());
    g.closePath();
    g.clip();

    //      int pad = 10;
    double scaleX = region.getWidth() / (maxX - minX);
    double scaleY = region.getHeight() / (maxY - minY);

    g.setLineWidth(1.5f);

    //      g.setStroke(javafx.scene.paint.Color.GRAY);
    //      g.strokeRect(region.getX(), region.getY(), region.getWidth(), region.getHeight());

    g.translate(region.getMinX(), region.getMinY());

    //      g2d.drawLine(0, 0, 0, region.height);
    //      g2d.drawLine(0, region.height, region.width, region.height);

    double increment;
    if (maxPoints < 0 || x.length <= maxPoints)
        increment = 1;
    else
        increment = (double) x.length / maxPoints;

    for (double i = 0; i < x.length; i += increment) {
        int ind = (int) i;
        double xx = x[ind];
        double yy = y[ind];
        //         // Skip if out of range
        //         if (xx < minX || xx > maxX || yy < minY || yy > maxY)
        //            continue;

        double xo = (xx - minX) * scaleX - markerSize / 2;
        double yo = region.getHeight() - (yy - minY) * scaleY - markerSize / 2;

        Color cDraw = colorDraw == null ? null : colorDraw[ind];
        if (fillMarkers) {
            Color cFill = colorFill[ind] == null ? cDraw : colorFill[ind];
            if (cFill != null) {
                g.setFill(cFill);
                g.fillOval(xo, yo, markerSize, markerSize);
                // Don't need to draw if it would be the same color anyway
                if (cFill == cDraw)
                    continue;
            }
        }
        if (cDraw != null) {
            g.setStroke(cDraw);
            g.strokeOval(xo, yo, markerSize, markerSize);
        }
    }

    g.restore();
}

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