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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 _landscape 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.add_angle_listener(stage.getScene(), () -> { draw(); });
pane.setCenter(view);
draw();
stage.show();
}
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 (double z = -150; z <= 150; z += 10) {
for (double x = -150; x <= 150; x++) {
double t = Math.sqrt(x * x + z * z) * Math.PI / 180;
double y = 20 * (Math.cos(t) + Math.cos(3 * t));
double[] p = project(tf.mul(x, y, z));
gc.fillRect(p[0], p[1], 1, 1);
}
}
}
private double[] project(double[] v) {
return v;
}
}