Example usage for javafx.scene.canvas GraphicsContext fillOval

Introduction

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

Prototype

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

Source Link

Document

Fills an oval using the current fill paint.

Usage

From source file:Main.java

@Override
public void start(Stage stage) {
    Canvas canvas = new Canvas(300, 100);

    GraphicsContext gc = canvas.getGraphicsContext2D();

    gc.setLineWidth(2.0);/*  w  w w. j  a  va 2  s  . c  o m*/
    gc.setFill(Color.RED);

    gc.strokeRoundRect(10, 10, 50, 50, 10, 10);

    gc.fillOval(70, 10, 50, 20);

    gc.strokeText("Hello Canvas", 150, 20);

    Pane root = new Pane();
    root.getChildren().add(canvas);
    Scene scene = new Scene(root);
    stage.setScene(scene);
    stage.setTitle("");
    stage.show();
}

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

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

    g.save();/*ww  w  .j  a v a 2s  . c om*/

    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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