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package sample;
import javafx.application.Application;
import javafx.scene.Scene;
import javafx.scene.canvas.Canvas;
import javafx.scene.canvas.GraphicsContext;
import javafx.scene.layout.BorderPane;
import javafx.stage.Stage;
public class _spade extends Application {
public static void main(String... args) {
Application.launch(args);
}
private static final int VIEW_W = 400, VIEW_H = 300;
@Override
public void start(Stage stage) throws Exception {
BorderPane pane = new BorderPane();
Scene scene = new Scene(pane);
stage.setScene(scene);
Canvas view = new Canvas(VIEW_W, VIEW_H);
pane.setCenter(view);
draw(view.getGraphicsContext2D());
stage.show();
}
private double[][] p = {
{-10, 60}, {-200, 240}, {20, 240}, {-80, 300},
{80, 300}, {-20, 240}, {200, 240}, {10, 60},
};
private void draw(GraphicsContext gc) {
gc.setTransform(1, 0, 0, 1, VIEW_W / 2, 0);
double x1, y1, x2, y2;
int n = p.length;
gc.beginPath();
gc.moveTo(0, 0);
for (int i = 0; i < n; i++) {
x1 = p[i][0];
y1 = p[i][1];
if (i == n - 1) {
x2 = 0; y2 = 0;
} else {
x2 = (p[i][0] + p[i + 1][0]) / 2;
y2 = (p[i][1] + p[i + 1][1]) / 2;
}
gc.quadraticCurveTo(x1, y1, x2, y2);
}
gc.fill();
}
}