Wednesday Sep 23, 2009
A very simple example in JavaFX to show that shape intersection/subtraction works so cool in JavaFX. Gradient comes out in a nice fashion and motion is also smooth.
Please see this link to view the sample: http://www.javafx.com/samples/SpeedoMeter/index.html The gradient in sample and here are different and that can be changed by changing 3-4 lines in code.
Its again a open code written. Personally I don't like too much of OOP's coding in JavaFX as it is not a language meant for it. But yes if sample size/application size is big, its always good to make things seperate.
Thursday Jul 30, 2009
A simple example how ListView works in JavaFX 1.2. I guess it need more
feature in next release. But it do basic stuff like providing scrollbar
if list is long, selected item actions.Something like this :
Here is the simple code, in which I am adding text ..........
[
Read More]
Tuesday Jun 30, 2009
As already discussed, JavaFX 1.2 provide API set for Charts and Graphs. Though I decided to put my hand dirty in writing one 3D piechart from my own. With mine, you will get additional feature of explode in and out feature :). Well, action can be written with the existing chart API and I guess explode feature will also come soon.
Making 3D Pie chart is nothing but layering of 2D Pie Chart and here goes a small code :
Slice.fx
package piechart3d;
import java.lang.Math;
import javafx.animation.Interpolator;
import javafx.animation.KeyFrame;
import javafx.animation.Timeline;
import javafx.scene.CustomNode;
import javafx.scene.Group;
import javafx.scene.input.MouseEvent;
import javafx.scene.Node;
import javafx.scene.paint.Color;
import javafx.scene.paint.LinearGradient;
import javafx.scene.paint.Stop;
import javafx.scene.shape.Arc;
import javafx.scene.shape.ArcType;
/**
* @author Vaibhav Choudhary
*/
public class Slice extends CustomNode {
public var color: Color;
public var sAngle: Number = 0.0;
public var len: Number = 0.0;
public var xt = 0.0;
public var yt = 0.0;
function explodout():Boolean {
var t = Timeline {
repeatCount: 1
keyFrames: [
KeyFrame {
time: 0.25s
canSkip: true
values: [
xt =>
30 * Math.cos(2 * Math.PI * (sAngle + len / 2) / 360) tween Interpolator.EASEBOTH,
yt =>
-30 * Math.sin(2 * Math.PI * (sAngle + len / 2) / 360) tween Interpolator.EASEBOTH
]
}
]
}
t.play();
return true
}
function explodein():Boolean {
var t1 = Timeline {
repeatCount: 1
keyFrames: [
KeyFrame {
time: 0.25s
canSkip: true
values: [
xt => 0,
yt => 0
]
}
]
}
t1.play();
return true
}
public override function create(): Node {
return Group {
blocksMouse: true
translateX: bind xt
translateY: bind yt
onMouseClicked: function( e: MouseEvent ):Void {
if(xt == 0 and yt == 0) {
explodout();
}
else
explodein();
}
content: for(num in [0..25]) {[
Arc {
stroke: color
cache: true
fill: color
translateX: 0
translateY: (num + 1) * 1
centerX: 250
centerY: 250
radiusX: 150
radiusY: 60
startAngle: bind sAngle
length: bind len
type: ArcType.ROUND
}
Arc {
cache: true
fill: LinearGradient {
startX: 0.3
startY: 0.3
endX: 1.0
endY: 1.0
stops: [
Stop {
color: color
offset: 0.0
},
Stop {
color: Color.WHITE
offset: 1.0
},
]
}
centerX: 250
centerY: 250
radiusX: 150
radiusY: 60
startAngle: bind sAngle
length: bind len
type: ArcType.ROUND
},
]
}
};
}
}
Main.fx:
package piechart3d;
import javafx.scene.paint.Color;
import javafx.scene.Scene;
import javafx.stage.Stage;
/**
* @author Vaibhav Choudhary
*/
var slice1: Slice = Slice{color: Color.YELLOWGREEN, sAngle:0, len: 45};
var slice2: Slice = Slice{color: Color.BLUEVIOLET, sAngle:45, len: 80 };
var slice3: Slice = Slice{color: Color.PALETURQUOISE, sAngle:125, len: 80 };
var slice4: Slice = Slice{color: Color.DARKORANGE, sAngle:205, len: 100 };
var slice5: Slice = Slice{color: Color.FIREBRICK, sAngle:305, len: 55};
Stage {
title: "Pie Chart - 3D"
width: 550
height: 580
scene: Scene {
fill: Color.WHITE
content:[
slice2, slice1,slice5,slice3,slice4
]
}
}
Anything here can be made generic to any extend. There is a for loop of 0..25 in Slice.fx which speaks about the thickness of chart :) and some mathematics in timeline speaks about explode feature.
Now if you compare this with PieChart that comes in API, you will see this has some jerky corners + Color combination is not as soluble. How that has been made is secret :).
JNLP Run :
Friday Jun 05, 2009
One of the most effective API's got introduced into the Marina(JavaFX 1.2) release are Control and Chart API's. As there are lot of questions on chart API, here is the small code for making some charts, it almost follow the same protocol with all chart API's.
We can do hell lot of things with it. I have just used the default and shown how action() can be written on slices.
Source code : Here
Here goes the bubble chart, basic funda is same, insert the number array into BubbleChart.Data. Get all the Data into series and get that series into the Chart API. For more, please see the source Code.
More will be posted soon, or a jumbo one with all of it in one go ! You can download the latest SDK from here.
Wednesday Mar 25, 2009
So, finally we kicked off the new Article section on javafx.com. Go to the "Explore section". Hit "Overview", see "Overview and New Articles". We have 3 articles there right now.
1. Making a Point-Line Graph.
2. Write an app on Mobile.
3. Improve startup time for FX Apps.
and many more to come.
I don't know if there is a link where we can request for articles but you can definetely leave a comment here, we will take care of it :).
Friday Mar 20, 2009
JavaFX being an easy language, one complex part is to write proper timeline for animation. Though its quite easy but as beginner I feel problem sometime. And sometime as a Java Developer, we start demanding those things which are generally done by the concept of multi-threading in Java. Remember, JavaFX is single threaded application.
So, this is what I generally follow. Say, If I have a class Ball, which has a circle and every ball has a timeline for its own. Now, if you want One ball move after another ball, I write a master timeline in Main file and there we write something like this :
var t = Timeline {
repeatCount: 1
keyFrames: [
KeyFrame { time:0s action: function(){ t1.t.playFromStart(); } },
KeyFrame { time:1s action: function(){ t2.t.playFromStart(); } },
]
}
Where there is an animation of 1s in t1.t.playFromStart(); So, the next timeline call goes at 1s, means finishing at first one. If you want some initial delay, you can write :
var t = Timeline {
repeatCount: 1
keyFrames: [
KeyFrame { time:1s action: function(){ t1.t.playFromStart(); } },
KeyFrame { time:2s action: function(){ t2.t.playFromStart(); } },
]
}
Means, dont do anything from 0s to 1s.
But, It is possible that you messed up after sometime. For that, you need to check the "javafx.animation.transition" package, one of the awesome packages in FX API's.
Though, example is everywhere in API Doc. I just show a small one, copied from the API' example itself. First car will fade, then move left and right, then rotate, then move again and then zoom.
Code for assistance :
1. Main for timeline problem.
2. Time class for timeline problem
3. Transitions Main Class.
Tuesday Mar 17, 2009
Spring season is about to come and one can feel the coldness in air. Last week, I went to my home and that week was quite good for my sample writing. Able to finish some of my pending job.
Back to JavaFX Samples, last week I saw a nice sample written in flash about the ball motion in 3-D space. I try to implement that idea in JavaFX. Code is little dirty, so I will post it later.
This is how it looks (animation is important) :
To watch the animation, please launch this JNLP.
I hope, you will enjoy it !
1. There are 4 polygon, which covers the space, looks like a cricket net practice place :).
2. Launch button will give motion to ball, since the motion is not restored, pressing it again will not work.
3. var scale = z0 / (z0 + z); Scaling with proper value will provide the Z-Camera.
4. Gaussian Blur for shadow, which translate in 2-D and with same timeline.
--
Change in Blog : Adding source code :
1. Main File
2. Ball Throw
This will allow you to relaunch the animation.
Tuesday Mar 10, 2009
This is combination of my old examples. But here we can easily see how to delete, insert items from window at runtime.
I have integrated 6 of the physics motion in one tree. Actually it makes things little complex, say we have colliding balls on one button and when I go somewhere and come back to colliding balls, it should colliding from begin. So, for some motion we need to restore initial position again.
Run the JNLP here :
Jar file is little big, so it will take time.
Thursday Jan 29, 2009
Some of the way, we can make fancy text. There are lot of good way but these are few of them. If you really want to make it fancy then please do some R&D with these API's used in this code. Here is a small code:
package addingfontinstyle;
import javafx.scene.effect.DropShadow;
import javafx.scene.effect.GaussianBlur;
import javafx.scene.effect.light.DistantLight;
import javafx.scene.effect.light.SpotLight;
import javafx.scene.effect.Lighting;
import javafx.scene.paint.Color;
import javafx.scene.Scene;
import javafx.scene.text.Font;
import javafx.scene.text.FontWeight;
import javafx.scene.text.Text;
import javafx.scene.text.TextOrigin;
import javafx.stage.Stage;
Stage {
title: "Text In Style"
width: 450
height: 500
scene: Scene {
content: [
Text {
effect: DropShadow {
offsetX: -10
offsetY: -10
}
font: Font {
name: "Arial"
letterSpacing: 0.20
size: 50
}
fill: Color.YELLOWGREEN
stroke: Color.GREEN,
strokeWidth: 3
x: 15,
y: 80
content: "Hello World"
},
Text {
effect: Lighting {
light: DistantLight {
azimuth: -135
elevation: 30
}
surfaceScale: 5
}
x: 10
y: 200
content: "Hello World"
fill: Color.RED
font: Font {
name: "Arial Bold"
letterSpacing: 0.20
size: 50
}
},
Text {
effect: Lighting {
light: SpotLight {
x: 0
y: 100
z: 50
pointsAtX: 400
pointsAtY: 0
pointsAtZ: 0
specularExponent: 2
}
surfaceScale: 5
}
textOrigin: TextOrigin.TOP
x: 10
y: 300
content: "Hello World"
fill: Color.RED
font: Font {
name: "Arial Bold"
letterSpacing: 0.20
size: 50
}
},
Text {
effect: GaussianBlur {
}
x: 10
y: 400
content: "Hello World"
fill: Color.GREEN
font: Font {
name: "Arial Bold"
letterSpacing: 0.20
size: 50
}
}
]
}
}
Tuesday Jan 06, 2009
Back to Java :). Here is a small blog on how to manage Java Process from Java itself.
Long back, I had written one blog on how to list Java Process
running on System by Java Code. But with the new features of JDK6, you
can not only see the list but can manage the other running Java
Process. This is possible using class LocalVirtualMachine. This class
has a list of methods :
connectorAddress,
displayName,
getAllVirtualMachines,
getLocalVirtualMachine,
isAttachable,
isManageable,
startManagementAgent,
toString,
vmid
Here I am just showing a simple code, which will again tell you all the running Java Process.
import sun.tools.jconsole.*;
import java.util.*;
public class Main {
public static void main(String[] args) {
Map map = LocalVirtualMachine.getAllVirtualMachines();
Iterator iter = map.values().iterator();
LocalVirtualMachine vm = null;
while (iter.hasNext()) {
vm = (LocalVirtualMachine)iter.next();
System.out.println(vm.displayName());
}
}
}
A very very small code :). Note that this class is not in rt.jar so we
need to add jconsole.jar and tools.jar in the classpath section.
So, for running we need to use :
D:/Program Files/Java/jdk1.6.0_11/bin/ControlJavaApp>../javac -cp "D:/Program Fi
les/Java/jdk1.6.0_11/lib/jconsole.jar" Main.java
D:/Program Files/Java/jdk1.6.0_11/bin/ControlJavaApp>../java -cp .;"D:/Program F
iles/Java/jdk1.6.0_11/libjconsole.jar";"D:Program Files/Java/jdk1.6.0_11/lib/t
ools.jar" Main
Or we can modify classpath in Env. Variables.
Right now, in my system it is displaying:
Main
org/netbeans/modules/javafx/preview/Main 1
That means, this code itself and Netbeans is running as a java process.
In next blog, we will try to see how to manage(not listing) other running java code from a java code. I am not able to find too much of doc from net, so things are slow :).
Tuesday Dec 30, 2008
While writing some of the samples in which we have to play with images, we sometimes has to manage the depth of the images. Like for the Carousel example, every image has a depth. In that example, actually images are not overlapping with each other, so we never need to write the Z-Order concept. But if someone want to write a Carousel or some application in which Images are residing over other images, we need to set the Z-order of Images. Z-Order in literal term means depth-ness of images. JavaFX gracefully provide API's to set the Z-order of images. With a simple call, you can set the images toFront or toBack features.
In this example, I have taken 3 images and try to set the depth-ness of images on the event of Buttons.
First Image on Top Second Image on Top
Third Image on Top
Here is the code to set the Z-Order :
package zorder;
import javafx.scene.Group;
import javafx.scene.image.Image;
import javafx.scene.image.ImageView;
import javafx.scene.paint.Color;
import javafx.scene.Scene;
import javafx.stage.Stage;
import javafx.scene.shape.Rectangle;
import javafx.scene.input.MouseEvent;
import javafx.ext.swing.SwingButton;
var im1 = ImageView {
x: 100
y: 100
image: Image {
url: "{__DIR__}im1.PNG"
}
opacity: 0.8
};
var im2 = ImageView {
x: 130
y: 130
image: Image {
url: "{__DIR__}im2.PNG"
}
opacity: 0.8
};
var im3 = ImageView {
x: 160
y: 160
image: Image {
url: "{__DIR__}im3.PNG"
}
opacity: 0.8
};
var gp = Group {
content:[
im1, im2,im3
]
}
Stage {
title: "Application title"
width: 400
height: 400
scene: Scene {
fill: Color.BLACK
content: [
gp,
SwingButton {
translateX: 10
translateY: 10
text: "Image 1"
action: function() {
im1.toFront();
}
}
SwingButton {
translateX: 90
translateY: 10
text: "Image 2"
action: function() {
im2.toFront();
}
}
SwingButton {
translateX: 170
translateY: 10
text: "Image 3"
action: function() {
im3.toFront();
}
}
]
}
}
From next blog, I will use applet or JNLP in place of images, as suggested by Dmitry in last blog. Pictures make it bulky and uneasy to load. But I was getting some problem in deploying the application on Sun blog which will be rectified soon.
Tuesday Dec 23, 2008
I tried to write a very rough Tool Tip feature. Actually in JavaFX, we can write our own cool Tool tip. But in the meantime, we need to take care of boundary conditions of Tool tip. Here how it looks :
A shadow effect.
Right now its just a bad code, we will make it good in next post :D. Here it is :
package tooltip;
import javafx.scene.CustomNode;
import javafx.scene.effect.DropShadow;
import javafx.scene.Group;
import javafx.scene.Node;
import javafx.scene.paint.Color;
import javafx.scene.shape.Rectangle;
import javafx.scene.shape.ShapeIntersect;
import javafx.scene.text.Font;
import javafx.scene.text.Text;
public class ToolTip extends CustomNode {
public var x: Number;
public var y: Number;
//useless - content should decide
public var width: Number = 100;
public var height: Number = 50;
//useless-Tooltip instance should be
//added dynamically
public var op: Number = 0.0;
public var content: String;
public override function create(): Node {
return Group {
content: [
ShapeIntersect {
effect: DropShadow {
offsetY: -5
offsetX: -5
color: Color.color(0.4, 0.4, 0.4)
};
translateX: bind x
translateY: bind y
opacity: bind op
stroke: Color.GRAY
strokeWidth: 2
fill: Color.GREEN
a: [
Rectangle {
arcHeight:10
arcWidth:10
x: 0
y: 0
width: bind width
height: bind height
}
Rectangle {
rotate: 45
x: 40
y: 40
width: bind width / 5
height: bind 2 * height / 5
}
]
},
Text {
font: Font {
size: 14
}
translateX: bind x
translateY: bind y
opacity: bind op
x: 10,
y: 12
content: bind content
}
]
};
}
}
Main Code for this example :
package tooltip;
import javafx.scene.Group;
import javafx.scene.Scene;
import javafx.stage.Stage;
import tooltip.ToolTip;
import javafx.scene.shape.Rectangle;
import javafx.scene.paint.Color;
import javafx.scene.text.Text;
import javafx.scene.text.Font;
import javafx.scene.input.MouseEvent;
var tt = new ToolTip;
var rect = Rectangle {
x: 10,
y: 10
width: 180,
height: 70
stroke: Color.WHITE
strokeWidth: 4
fill: Color.YELLOWGREEN
opacity: 0.8
};
var text = Text {
font: Font {
size: 14
name: "Arial"
}
x: 14,
y: 30
content: "HelloWorld - Beginning of a \nnew technology always say\n - Hello World "
};
var gp = Group {
translateX: 60
translateY: 260
onMouseMoved: function( e: MouseEvent ):Void {
tt.x = rect.x + tt.width;
tt.y = rect.y - tt.height - 20;
tt.op = 0.8;
tt.content = "You can see \n the help of \nHelloWorld !";
}
onMouseExited: function( e: MouseEvent ):Void {
tt.op = 0.0;
}
content: [
rect, text,tt
]
}
Stage {
title: "Tool-Tip"
width: 450
height: 480
scene: Scene {
fill:Color.BLACK
content:[
gp
]
}
}⁞
If you are writing a generic tool tip take care of :
1. Scene size - it should not go off screen.
2. Height and Width of tool tip - Most of the tool tip has unit height but it depends on us, we can set it.
Sunday Dec 21, 2008
One more example of JavaFX production Suite. Though the complete thing can be done in Photoshop alone but I am just giving an example. I have made a house in Photoshop, which is not very good :(, but fair enough. And I animated the star effect in JavaFX.
So, here is my home in photoshop :
Actually this is funny, I was following a tutorial to make house and in temptation, I made shadow as well, but there is no meaning of shadow in night :). Now, I filled star sparking effect in this from JavaFX.
Filling star effect need same which we have written for sparkling glasses. Just some changes here and there. In the last blog we have already discussed how to import work from Photoshop.
Here are the things to download:
1. House in fxz format .
2. Code (Main.fx, Star.fx)
Lot many things can be done. But I don't know Photoshop.
Wednesday Dec 17, 2008
JavaFX provide a rich API for playing with colors for an image or object. The best depicted in this sample but I will show you very quickly how to change the color of a car on JSlider. I have taken this nice car from Path Animation Sample and on JSlider, I will reproduce lot of Car color like this :
Actually this is very small but some one who want to develop car race required lot of car colors(it can be done at runtime)
Code here :
package carcolors;
import javafx.scene.effect.ColorAdjust;
import javafx.scene.image.Image;
import javafx.scene.image.ImageView;
import javafx.scene.Scene;
import javafx.stage.Stage;
import javafx.animation.Timeline;
import javafx.animation.KeyFrame;
import javafx.animation.Interpolator;
import javafx.ext.swing.SwingSlider;
var hue = 0;
var s = SwingSlider {
minimum: -100
maximum: 100
value: hue
vertical: false
};
Stage {
title: "Application title"
width: 250
height: 280
scene: Scene {
content: [
s,
ImageView {
x: 100
y: 100
image: Image {
url: "{__DIR__}car.png"
}
effect: ColorAdjust {
hue: bind s.value/100.0
}
},
]
}
}
Wednesday Dec 10, 2008
3 weeks back, we were thinking of some cool application to make. I am a guy who has seen very less outside world, so coming up with some great idea is always tough for me. So, deciding that, I went back to my tenth class physics book and saw some of the cool physics motion. Its one of the tough subject and always screw me in exam. Searching some of the easy equation, I though to make one spring motion. Meantime, I though there is some spring motion residing in our repository. Actually one of the Josh applications do it in awesome way, but still we were missing the actual feel of Spring motion because of the gig-gag and spiral stuff attached to the wall and spring is going up and down in it, with a complete view of awesomeness :). This is what finally we achieve from this blog :
I can still bet this can be 3 times much better than what you are seeing here. So, little of good news here that this sample can be executed on mobile
Here are the code files :
1. Main file.
2. Spring file.
3. SpringEquation file.
Enjoy FX'ing !
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