place and show pixel in the Cartesian plane graph in JavaFX
- by user3671803
I have this method to draw the Cartesian plane in JavaFX, using canvas and would like to know if it is possible to place or show the pixel:
public class Grafics extends StackPane {
private Canvas canvas;
public void Grafics(){
GridPane grid = new GridPane();
grid.setPadding(new Insets(5));
grid.setHgap(10);
grid.setVgap(10);
canvas = new Canvas();
canvas.setHeight(500);
canvas.setWidth(700);
GridPane.setHalignment(canvas, HPos.CENTER);
grid.add(canvas, 0, 2);
GraphicsContext gc = canvas.getGraphicsContext2D();
gc.setFill(Color.BLACK);
gc.fillRect(0, 0, canvas.getWidth(), canvas.getHeight());
gc.setFill(Color.WHITE);
gc.fillRect(1, 1, canvas.getWidth() - 2, canvas.getHeight() - 2);
drawAxesXY(gc); //call the method drawAxes
getChildren().addAll(grid);// add an gridpane in stackpane
}
private void drawAxesXY(GraphicsContext gc1) {
PixelWriter pixelWriter = canvas.getGraphicsContext2D().getPixelWriter();
gc1.setFill(Color.WHITE);
gc1.setStroke(Color.BLACK);
gc1.setLineWidth(1.5);
gc1.strokeText("Y", 350, 30);
gc1.scale(1, 1);
gc1.translate((canvas.getHeight() / 50) - (canvas.getWidth() / 10), canvas.getHeight() / 50);
gc1.strokeLine(canvas.getWidth() - 300, canvas.getWidth() - 300,
canvas.getHeight() - 100, canvas.getHeight() / 30);
pixelWriter.setColor(300, 300, Color.RED);
gc1.strokeText("X", 620, 220);
gc1.translate(canvas.getWidth() - (canvas.getHeight() / 10), -220);
gc1.rotate(90.0);
gc1.setFill(Color.WHITE);
gc1.setStroke(Color.RED);
gc1.setLineWidth(1.5);
gc1.strokeLine(canvas.getWidth() - 250, canvas.getWidth() - 250,
canvas.getHeight() - 50, canvas.getHeight() / 30);
pixelWriter.setColor(620, 220, Color.RED);
}
}
I put a line black and the other red
http://postimg.org/image/tewjhco4z/
and I wanna know if is possible to place or show the pixel in Figure like this
http://postimg.org/image/98k9mvnb3/
