I'm new in JavaFX and I'am trying to make solar system.
Now, I want to make sun like this
I've tried:
Glow g = new Glow(100);
sphere.setEffect(g);
But it doesn't work.
Any solutions? Thanks.
Source
import javafx.application.Application;
import javafx.scene.PerspectiveCamera;
import javafx.scene.Scene;
import javafx.scene.image.Image;
import javafx.scene.layout.AnchorPane;
import javafx.scene.paint.Color;
import javafx.scene.paint.ImagePattern;
import javafx.scene.shape.Rectangle;
import javafx.stage.Stage;
public class Main extends Application
{
public static void main(String[] args)
{
Application.launch(args);
}
#Override
public void start(Stage stage)
{
// Create a rectangle
Rectangle rect = new Rectangle(75, 75);
rect.setTranslateX(300);
rect.setTranslateY(-5);
rect.setTranslateZ(400);
// Load an image
rect.setFill(new ImagePattern(new Image("file:spark2.png")));
// Create a Camera to view the 3D Shapes
PerspectiveCamera camera = new PerspectiveCamera(false);
camera.setTranslateX(100);
camera.setTranslateY(-50);
camera.setTranslateZ(300);
// Add the Shapes and the Light to the Group
AnchorPane root = new AnchorPane(rect);
// Create a Scene with depth buffer enabled
Scene scene = new Scene(root, 800, 800, true);
// Fill the background with black
scene.setFill(Color.BLACK);
// Add the Camera to the Scene
scene.setCamera(camera);
// Add the Scene to the Stage
stage.setScene(scene);
// Set the Title of the Stage
stage.setTitle("An Example");
// Display the Stage
stage.show();
}
}
Output:
The sparkle image:
View
Related
I am working on a java fx template to draw 100 white dot-sized two-dimensional shapes to resemble like stars in order to create a night-sky-like look. I am a complete beginner to java.
I already know about how to create a single 2 dimensional shape but how should I create 100 similar shapes?
import javafx.application.Application;
import javafx.scene.Group;
import javafx.scene.Scene;
import javafx.scene.canvas.Canvas;
import javafx.scene.canvas.GraphicsContext;
import javafx.scene.paint.Color;
import javafx.scene.shape.Circle;
import javafx.stage.Stage;
public class Constellations extends Application{
#Override
public void start(Stage stage) throws Exception {
Group root = new Group();
Scene scene = new Scene(root,600,600,Color.DARKBLUE);
Canvas canvas = new Canvas(800, 800); // Set canvas Size in Pixels
stage.setTitle("Constellations"); // Set window title
root.getChildren().add(canvas);
stage.setScene(scene);
GraphicsContext gc = canvas.getGraphicsContext2D();
Circle star=new Circle();
star.setCenterX(100);
star.setCenterY(100);
star.setRadius(2);
star.setFill(Color.WHITE);
root.getChildren().addAll(star);
stage.show();
}
public static void main(String[] args) {
launch(args);
}
}
I expect 100 dot-sized circles but the actual output I am getting until now is only one dot-sized circle.
I would like to show a photo as an ImageView in a ScrollPane with an ZoomIn and ZoomOut Function. But if I reduce by means of scale the imageview, an undesirable empty edge is created in the ScrollPane. How can you make sure that the ScrollPane is always the size of the scaled ImageView?
See the following example. For simplicity, I replaced the ImageView with a rectangle.
import javafx.application.Application;
import javafx.event.ActionEvent;
import javafx.scene.Scene;
import javafx.scene.control.Button;
import javafx.scene.control.ScrollPane;
import javafx.scene.layout.BorderPane;
import javafx.scene.layout.HBox;
import javafx.scene.layout.Pane;
import javafx.scene.paint.Color;
import javafx.scene.shape.Rectangle;
import javafx.stage.Stage;
public class ScrollPaneDemo extends Application {
double scale;
Pane contPane = new Pane();
#Override
public void start(Stage primaryStage) {
BorderPane pane = new BorderPane();
ScrollPane sp = new ScrollPane();
sp.setContent(contPane);
sp.setVvalue(0.5);
sp.setHvalue(0.5);
Rectangle rec = new Rectangle(2820, 1240,Color.RED);
scale = 0.2;
contPane.setScaleX(scale);
contPane.setScaleY(scale);
contPane.getChildren().add(rec);
Button but1 = new Button("+");
but1.setOnAction((ActionEvent event) -> {
scale*=2;
contPane.setScaleX(scale);
contPane.setScaleY(scale);
});
Button but2 = new Button("-");
but2.setOnAction((ActionEvent event) -> {
scale/=2;
contPane.setScaleX(scale);
contPane.setScaleY(scale);
});
HBox buttons = new HBox(but1, but2);
pane.setTop(buttons);
pane.setCenter(sp);
Scene scene = new Scene(pane, 800, 600);
primaryStage.setScene(scene);
primaryStage.show();
}
public static void main(String[] args) {
launch(args);
}
}
contPane scaled by using transform don't change its layoutBounds automatically. If you want not to make empty space in contPane, you'd better wrap the node in Group.
See this post. Layout using the transformed bounds
sp.setContent(new Group(contPane));
In addition, if you don't want to make empty space in ScrollPane, limit minimum scale to rate which width or height of the content fits viewport's one.
Button but1 = new Button("+");
but1.setOnAction((ActionEvent event) -> {
updateScale(scale * 2.0d);
});
Button but2 = new Button("-");
but2.setOnAction((ActionEvent event) -> {
updateScale(scale / 2.0d);
});
HBox buttons = new HBox(but1, but2);
pane.setTop(buttons);
pane.setCenter(sp);
Scene scene = new Scene(pane, 800, 600);
primaryStage.setScene(scene);
primaryStage.show();
updateScale(0.2d);
private void updateScale(double newScale) {
scale = Math.max(newScale, Math.max(sp.getViewportBounds().getWidth() / rec.getWidth(), sp.getViewportBounds().getHeight() / rec.getHeight()));
contPane.setScaleX(scale);
contPane.setScaleY(scale);
}
Consider a case of the image is smaller than ScrollPane's viewport. Because for showing no empty space, this code will stretch contents when it doesn't have enough size.
In a case of huge images, TravisF's comment helps you.
I'm french, sorry for mistake.
I have an primary stage, and foreground an small second stage. I want to color in gray all the primary stage when the second stage is visible.
It's good, i cannot click in the primary stage with the line :
stage.initModality(Modality.WINDOW_MODAL);
But I want to put a color gray in the primary stage.
I try to disable all componant in the primary stage (every componant is gray and disable) but imageViews are not gray, it's a problem.
Help please.
Thanks.
You can add all to a Stackpane and make a Region as a veil (visible=true/false).
import javafx.application.Application;
import javafx.event.ActionEvent;
import javafx.scene.Scene;
import javafx.scene.control.Alert;
import javafx.scene.control.Button;
import javafx.scene.image.Image;
import javafx.scene.image.ImageView;
import javafx.scene.layout.BorderPane;
import javafx.scene.layout.Region;
import javafx.scene.layout.StackPane;
import javafx.stage.Stage;
public class VeilDemo extends Application {
#Override
public void start(Stage primaryStage) {
// that is the veil
Region veil = new Region();
veil.setStyle("-fx-background-color: rgba(0, 0, 0, 0.3)");
veil.setVisible(false);
Button btn = new Button();
btn.setText("Open Dialog");
btn.setOnAction((ActionEvent event) -> {
Alert a = new Alert(Alert.AlertType.INFORMATION);
//veil is only visible when alert window is showing
veil.visibleProperty().bind(a.showingProperty());
a.setContentText("The main window should be decorated with a veil.");
a.setX(primaryStage.getX() + 200); // This is only for showing main window
a.showAndWait();
});
Image img = new Image("https://www.gnu.org/graphics/gnu-head-sm.png");
ImageView iv = new ImageView(img);
// this should be the normal root of window
BorderPane bp = new BorderPane(iv);
bp.setBottom(btn);
StackPane root = new StackPane();
root.getChildren().addAll(bp, veil);
Scene scene = new Scene(root, 300, 250);
primaryStage.setTitle("Hello World!");
primaryStage.setScene(scene);
primaryStage.show();
}
/**
* #param args the command line arguments
*/
public static void main(String[] args) {
launch(args);
}
}
The main window will look like this:
and if the button was clicked, the info window opens and the veil is visibile on the main stage.
(Sorry for my poor English)
I don't know how I can stop a Mouse Event in JavaFX.
This code generates a small image into a large rectangle when I press a button and then pressed the large rectangle, but if I press again the big rectangle is rebuilt a new image.
I dont want to generate a new image, how Can I do that?
button.setOnAction((ActionEvent t) -> {
rectangle.setOnMouseClicked((MouseEvent me) -> {
Rectangle asdf = new Rectangle(48, 48, Color.TRANSPARENT);
StackPane imageContainer = new StackPane();
ImageView image = new ImageView("firefox-icono-8422-48.png");
imageContainer.getChildren().addAll(asdf, image);
imageContainer.setTranslateX(me.getX());
imageContainer.setTranslateY(me.getY());
enableDragging(imageContainer);
rootGroup.getChildren().add(imageContainer);
myList2.add(imageContainer);
});
});
Thanks
PS: t.consume() and me.consume(); don't anything.
I'm not sure I have interpreted your question correctly, but if you want to "turn off" the mouse click handler on the rectangle, you can just call
rectangle.setOnMouseClicked(null);
Complete example:
import javafx.application.Application;
import javafx.geometry.Pos;
import javafx.scene.Scene;
import javafx.scene.control.Button;
import javafx.scene.layout.StackPane;
import javafx.scene.layout.VBox;
import javafx.scene.paint.Color;
import javafx.scene.shape.Rectangle;
import javafx.stage.Stage;
public class ActivateRectangleWithButton extends Application {
#Override
public void start(Stage primaryStage) {
Rectangle border = new Rectangle(100, 100, Color.TRANSPARENT);
Rectangle rect = new Rectangle(80, 80, Color.CORNFLOWERBLUE);
StackPane stack = new StackPane(border, rect);
Button button = new Button("Activate");
button.setOnAction(evt -> {
border.setFill(Color.BLUE);
rect.setOnMouseClicked(me -> {
System.out.println("Active rectangle was clicked!");
// de-activate:
border.setFill(Color.TRANSPARENT);
rect.setOnMouseClicked(null);
});
});
VBox root = new VBox(20, stack, button);
root.setAlignment(Pos.CENTER);
Scene scene = new Scene(root, 300, 300);
primaryStage.setScene(scene);
primaryStage.show();
}
public static void main(String[] args) {
launch(args);
}
}
Im trying to realize a special FadeTransition effect. But I have no idea how I can manage it. For some node I would like to increase the opacity from left to right (for example in Powerpoint, you can change the slides with such an effect). Here is an easy example for rectangles. But the second one should fadeIn from left to right (the opacity should increase on the left side earlier as on the right side). With timeline and KeyValues/KeyFrames I found also no solution.
Thanks in advance.
Rectangle rec2;
#Override
public void start(Stage stage) {
Group root = new Group();
Scene scene = new Scene(root, 400, 300, Color.BLACK);
stage.setTitle("JavaFX Scene Graph Demo");
Pane pane = new Pane();
Button btnForward = new Button();
btnForward.setText(">");
btnForward.setOnAction(new EventHandler<ActionEvent>() {
#Override
public void handle(ActionEvent event) {
FadeTransition ft = new FadeTransition(Duration.millis(2000), rec2);
ft.setFromValue(0.);
ft.setToValue(1.);
ft.play();
}
});
Rectangle rec1 = new Rectangle(0, 0, 300,200);
rec1.setFill(Color.RED);
rec2 = new Rectangle(100, 50, 100,100);
rec2.setFill(Color.GREEN);
rec2.setOpacity(0.);
pane.getChildren().addAll(rec1,rec2);
root.getChildren().add(pane);
root.getChildren().add(btnForward);
stage.setScene(scene);
stage.show();
}
Define the fill of the rectangle using css with a linear gradient which references looked-up colors for the left and right edges of the rectangle. (This can be inline or in an external style sheet.)
Define a couple of DoublePropertys representing the opacities of the left and right edge.
Define the looked-up colors on the rectangle or one of its parents using an inline style bound to the two double properties.
Use a timeline to change the values of the opacity properties.
import javafx.animation.KeyFrame;
import javafx.animation.KeyValue;
import javafx.animation.Timeline;
import javafx.application.Application;
import javafx.beans.binding.Bindings;
import javafx.beans.property.DoubleProperty;
import javafx.beans.property.SimpleDoubleProperty;
import javafx.event.ActionEvent;
import javafx.event.EventHandler;
import javafx.scene.Group;
import javafx.scene.Scene;
import javafx.scene.control.Button;
import javafx.scene.layout.Pane;
import javafx.scene.paint.Color;
import javafx.scene.shape.Rectangle;
import javafx.stage.Stage;
import javafx.util.Duration;
public class FadeInRectangle extends Application {
#Override
public void start(Stage primaryStage) {
Group root = new Group();
Scene scene = new Scene(root, 400, 300, Color.BLACK);
primaryStage.setTitle("JavaFX Scene Graph Demo");
Pane pane = new Pane();
Rectangle rec1 = new Rectangle(0, 0, 300,200);
rec1.setFill(Color.RED);
Rectangle rec2 = new Rectangle(100, 50, 100,100);
rec2.setStyle("-fx-fill: linear-gradient(to right, left-col, right-col);");
final DoubleProperty leftEdgeOpacity = new SimpleDoubleProperty(0);
final DoubleProperty rightEdgeOpacity = new SimpleDoubleProperty(0);
root.styleProperty().bind(
Bindings.format("left-col: rgba(0,128,0,%f); right-col: rgba(0,128,0,%f);", leftEdgeOpacity, rightEdgeOpacity)
);
Button btnForward = new Button();
btnForward.setText(">");
btnForward.setOnAction(new EventHandler<ActionEvent>() {
#Override
public void handle(ActionEvent event) {
Timeline timeline = new Timeline(
new KeyFrame(Duration.ZERO, new KeyValue(leftEdgeOpacity, 0)),
new KeyFrame(Duration.ZERO, new KeyValue(rightEdgeOpacity, 0)),
new KeyFrame(Duration.millis(500), new KeyValue(rightEdgeOpacity, 0)),
new KeyFrame(Duration.millis(1500), new KeyValue(leftEdgeOpacity, 1)),
new KeyFrame(Duration.millis(2000), new KeyValue(rightEdgeOpacity, 1)),
new KeyFrame(Duration.millis(2000), new KeyValue(leftEdgeOpacity, 1))
);
timeline.play();
}
});
pane.getChildren().addAll(rec1,rec2);
root.getChildren().add(pane);
root.getChildren().add(btnForward);
primaryStage.setScene(scene);
primaryStage.show();
}
public static void main(String[] args) {
launch(args);
}
}