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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 _kaitentai extends Application {
public static void main(String... args) {
Application.launch(args);
}
private static final int VIEW_W = 400, VIEW_H = 300;
private GraphicsContext gc;
private _transform tf;
@Override
public void start(Stage stage) throws Exception {
BorderPane pane = new BorderPane();
stage.setScene(new Scene(pane));
Canvas view = new Canvas(VIEW_W, VIEW_H);
gc = view.getGraphicsContext2D();
tf = new _transform();
tf.angle(-30, 30);
tf.position(0, -90, 0);
tf.add_angle_listener(stage.getScene(), () -> { draw(); });
pane.setCenter(view);
draw();
stage.show();
}
private static final int ROUND_N = 90, RYOU_SEN_N = 6;
private double[][] glass = {
{ 100, 180 }, { 55, 140 }, { 10, 100 }, { 10, 60 },
{ 10, 20 }, { 50, 10 }, { 80, 4 }, { 80, 0 }
};
private void draw() {
gc.setTransform(1, 0, 0, 1, 0, 0);
gc.clearRect(0, 0, VIEW_W, VIEW_H);
gc.setTransform(1, 0, 0, -1, VIEW_W / 2, VIEW_H / 2);
for (int i = 0; i < glass.length; i++)
draw_toukou_sen(glass[i]);
for (int i = 0; i < RYOU_SEN_N; i++)
draw_ryou_sen(2 * Math.PI * i / RYOU_SEN_N, glass);
}
private void draw_toukou_sen(double[] v) {
gc.beginPath();
double r = v[0], y = v[1], t;
double[] p;
for (int i = 0; i < ROUND_N; i++) {
t = 2 * Math.PI * i / ROUND_N;
p = project(tf.mul(r * Math.sin(t), y, r * Math.cos(t)));
if (i == 0) gc.moveTo(p[0], p[1]);
gc.lineTo(p[0], p[1]);
}
gc.closePath();
gc.stroke();
}
private void draw_ryou_sen(double t, double[][] v) {
gc.beginPath();
double r, y;
double[] p;
for (int i = 0; i < v.length; i++) {
r = v[i][0]; y = v[i][1];
p = project(tf.mul(r * Math.sin(t), y, r * Math.cos(t)));
if (i == 0) gc.moveTo(p[0], p[1]);
gc.lineTo(p[0], p[1]);
}
gc.stroke();
}
private double[] project(double[] v) {
return v;
}
}