JavaFX 2.0 :: Triangle Mesh Rendering
Aug 7, 2014
I'm new to JavaFX and I'm exploring its 3D capabilities, and in particular the TriangleMesh visualisation.
I have developed a very basic application, based on the Molecule Sample Application provided in the examples, that read a mesh file generated by an external tool (Gmsh) and displays it. Pretty basic.
My problem is that the rendering is not what I expected (see attachement)
My guess is that I got something wrong with the texture coordinates or the triangles orientation.
- I don't what to have textures attached to my meshes. These are 3D meshes used for scientific simulation purposes. I thus have set all texCoords to 0.
- I don't control the orientation of my triangles, they are generated by Gmsh. Their orientation is also not interesting for my end users so I would like to display all triangles the same way. I used the meshView.setCullFace(CullFace.NONE); method.
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Nov 8, 2014
I'm currently working on a project which requires to have text displayed along a curve. If found this entry a good starting point. It works fine for me on my develompment machine, however the customer on his machine noticed some issues.
The basic idea is to define a path for the text, explode the text into the separate characters and animate them along the path the fraction of the character of the whole lenght. So with a animation duration of 10 seconds and a label of ten characters, the first character would be animated along 1 second, the second 2, and so forth.
This is done by jumping to the designated time in the animation, start the animation and stop it immediately.
Now the problem as I see it, for stopping the animation a separate timer is used, so it can happen that at the time the animation is actually stopped, the animation moved further than the first frame. The effect is that the last characters of the text appear in front (wrapped around).
As I have no evidence to prove or disprove my theory, what do you think is this plausable? I can see a workaround for this issue by defining a path for each character and then let the animation run to the end. While I can set the duration of the animation to 1 ms which should not be visible to the human eye, I'm not able to make the characters invisible and turn the visiblity on when the animation finishes, they always become visible at the start.
Or create my own animation/transition for placing the characters.
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May 31, 2014
I am fairly new to FX but well experienced with Swing. Since I am familiar with the Swing concept of rendering a let's say JTree I got problems with the FX model of - in this case - TreeView.
I read several documentations about FX. From the API doc of TreeItem I adapted the file browser example to create an own class like this :
public class PathTreeItem extends TreeItem<PathTreeItem> implements
Comparable<PathTreeItem> {
private boolean firstVisit = true;
private boolean readable;
private boolean dir;
private boolean symlink;
[Code] ...
But this did not change anything. I try to override toString() in both classes but even this did not change anything.
What I wonder so far:
Why is item in PathNodeTreeCell always null?What is the difference between the item I get in the updateItem method and the one I get from getItem() (line 10)How can I connect the PathTreeItem class to the PathNodeTreeCell classShould I always call super() in the constructors? (I delved a little bit in the sources of TreeItem and TreeCell and I found some setup code there )Is it ok to extend TreeItem in the way I does for my custom PathTreeItem class? ( I wonder if this is a cyclic dependency when I extends TreeItem in this way )How can I sort the nodes? I added the Comparable interface but this not change the sorting of the nodesAre ther some tutorials of TreeItem/TreeCell with no trivial objects like String ?
I want to adapt an well running Swing application to FX. In the Swing app I used a mechanism to load the child path's of a directory in a separate thread to avoid freezing if the UI if there are much child elements. I guess in FX I should use the Properties pattern to achieve this should I?
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Nov 14, 2014
I have a big issue to render this html page with the webview component :
<html><head lang="en"> <meta charset="UTF-8"> <title>Pb Rotate</title> <style type="text/css"> #myDivRotate {
color: purple; background-color: #d8da3d; height: 200px; width: 300px; margin-top: 20px; margin-left:20px; -webkit-transform:perspective(400px) rotateX(30deg); -webkit-backface-visibility: visible; }
</style></head><body> <div id="myDivRotate"> Coucou
</div></body></html>
The problem is from "perspective" in -webkit-transform. Without it's ok. But with this one, the result is different from a standard browser like chrome or safari.
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Nov 6, 2014
I'm trying to make a triangle that plots the point in where the corners show their position in the window and also that the user may drag each corner to a desired position.
import javafx.application.Application;
import javafx.event.ActionEvent;
import javafx.event.EventHandler;
import javafx.scene.Scene;
import javafx.scene.control.Button;
import javafx.scene.layout.StackPane;
import javafx.stage.Stage;
import javafx.scene.input.MouseButton;
import javafx.scene.shape.Polygon;
import javafx.scene.shape.Shape;
[code]....
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Dec 28, 2014
I'm doing a problem where the area of a triangle is returned (if valid). However, I want to return a message (i.e. 'triangle is not valid) if the triangle is invalid.
I'm not sure how to go about to doing this as my method (called area) will only let me return doubles. Possible to return a string in an else within my area method?
public class MyTriangle {
public static void main(String[] args) {
//triangle is valid if the sum of any two sides is bigger than the third
System.out.println(isValid(3, 4, 5));
System.out.println(area(543, 4, 5));
[Code] ...
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Feb 2, 2014
When I add an array of action-objects (the class extends AbstractAction)
to a combo box, I do receive the action performed events, great!
But the combo box items show the long string of the action object, of course!
How to render that string in a way that only the Action.NAME appears?
I was experimenting a little, but could not make it to work:
Java Code: private class ComboRenderer2 extends BasicComboBoxRenderer {
@Override
public Component getListCellRendererComponent(JList list,
[Code]....
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Aug 27, 2014
I have a student class with fields names and Gender. Now, I have a students' array. such that I can create multiple students' classes: student a, student b, student c e.t.c and store them into the students' array. Now, I store this students' array in a JComboBox and want to only display the names of these students in the array. Such that the JComboBox lists only the names of student a, student b and student c. . When a user clicks on a selected Item on the JComboBox, even though, it was a student's name that was selected, I want the selectedItem to be a object of the Student class. This, I have learnt works with JList by writing your own custom JList models and then DefaultListCellRenderer. Is there anyway, one could also do this with JComboBox?
//Main Method
import StudentList;
import Student;
import ViewGui;
import Controller;
public class SwingMainMethod {
[code]....
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Jun 3, 2014
I have 4 Primefaces bar charts which sometimes renders, sometimes not. In one of them, I inject a http user session attribute and use it to render the chart (the idea is to show only the data that corresponds to the (logged in) user department).
There are 4 session beans which I'm using the javax.enterprise.context.RequestScoped. Sometimes, the Glassfish destroys the instance as expected, but sometimes not.Based on Exception below, how can I resolve it?
The xhtml below shows the main code for only 2 of the 4 bar charts:
<p:tab title="Horas de Treinamento (por Funci)" closable="true" >
<p:barChart id="horasBars" value="#{chartHorasFunci.modelHoras}"
legendPosition="ne"
orientation="horizontal"
seriesColors="AA5555, 00438F"
xaxisLabel="Horas" yaxisLabel="Funcis"
title="34 Horas de Treinamento (Orçado/Realizado) por Funci"
[Code] .....
The Exception:
SEVERE: Error Rendering View[/capacitacao/capacitacao/index.xhtml]
javax.el.ELException: /WEB-INF/include/capacitacao/capacitacao/List.xhtml @145,38 value="#{chartHorasFunci.modelHoras}": org.jboss.weld.exceptions.WeldException: WELD-000049 Unable to invoke private void br.com.bb.upb.diage.atb.capacitacao.beans.ChartHorasFunci.initialize() on br.com.bb.upb.diage.atb.capacitacao.beans.ChartHorasFunci@3e9c727c
at com.sun.faces.facelets.el.TagValueExpression.getValue(TagValueExpression.java:114)
[Code] .....
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Jan 24, 2014
I m trying to migrate JSF 1.2 project with myfaces to JSF 2.0 with myfaces 2.0 jars on weblogic10.3 server. Found some problem related build and publishing after resolving them when i hitting my application all JSF html tags are coming in browser as it is they are parsed to html tags. all h: tages are coming as it is on my browser they are not converted to html tags for browser display.
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Nov 12, 2014
I have a problem I must solve and could not find an answer after a couple weeks of research, so here I am. I have created a custom Table Cell Renderer than extends DefaultTreeCellRenderer. The mission of this renderer is to set the branch icons depending on conditional statements. There are 3 conditions, and each one should render a different icon. These conditions must be tested against all branches in the tree. This means that using something like setOpenIcon() and setClosedIcon() will not work since it seems as though these methods set all branches to a specific icon (I could be wrong about that though). Below is the code for my custom. I made comments so it is easier to understand what I want to happen and what is not happening.
/**Custom Cell Render that will set the icons for the tree branches and the leafs*/
private TreeIconCellRenderer extends DefaultTreeCellRenderer{
public Component.getTreeCellRendererComponent(JTree tree, Object value,boolean selected,boolean expanded, boolean leaf, boolean row, boolean hasFocus){
//Get defaults in case there is no need to renderer
[Code] ...
What I really need to know is why the renderer is not differentiating between the leaves and branches. The logging statements I have added confirm that the branch block of code does not execute.
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Oct 16, 2014
I would like users in an application to be able to access and edit their user profiles (Application A). The problem is that the user objects (entities, dao, beans) are handled in a separate application (Application B) which is specifically for managing user accounts. Importing the java sources for App B into App A could be messy and might need configuration of the persistence unit and connection. I'm thinking it would be better to inject an EJB from App B to App A to query the user DB and return the results so a user profile form is rendered in App A.
I know how to inject EJBs within the same application, but I'm not so sure about how it's done across different applications or even if that's the most advisable way to achieve what I want. it's better practice to inject an external EJB into App A or simply import the classes from App B and use those.
@Stateless
public class UsersDaoImpl implements UsersDAO {
@PersistenceContext
private EntityManager em;
[code]....
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Jan 11, 2015
Untitled.jpg I have been working over this game lately, and i have managed to render multiple images from an array. in this fashion. I created a Main() class with the following in it:
public Main() {
for (int i = 0; i < fuel.length; i++) {
Random r = new Random();
changef = r.nextBoolean();
y = (-600 * i) + r.nextInt(300);
if (changef)
fx = 325;
else
[Code]...
Also, this is the Fuel image class and Obstacle image class:
public void tick(Player2 p2) {
y += dy;
Random r = new Random();
if(x >= p2.getH()) {
y = -40 - r.nextInt(700);
[Code]...
(Fuel and obstacle class are identical but separate for better accessibility) I even have player class with an image listening to key events and also a scrolling background. The problem is when i run the game, the images of obstacles render themselves as i want, except for that they overlap each other, i need to prevent over lapping of this images. The fuel is read and obs is black. Heres a glance of how it looks.
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Feb 10, 2015
I have some troubles rendering images to the printer, any resolution does not work, even 72 in PDF printer does not work, the image is crappy.
I use the following code but the result is not good. I mean the image quality is not acceptable.
img=new ImageIcon("c:\test\m.jpg").getImage();
scale=72/300d;
g.scale(scale,scale);
g.drawImage(img, 0, 0, (int) (img.getWidth(null)/scale), (int) (img.getHeight(null)/scale), null);
I've also tried :
img=new ImageIcon("c:\test\m.jpg").getImage();
AffineTransform aft=g.getTransform();
double scale=aft.getScaleX();
g.scale(scale,scale);
g.drawImage(img, 0, 0, (int) (img.getWidth(null)/scale), (int) (img.getHeight(null)/scale), null);
The result is the same even if I change the image, very poor and unacceptable!
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Jun 26, 2014
As implied by the title, when I am rendering images of the type "BufferedImage" unto a Swing application, the images' pixels are not consistent in size. Some might be larger than other, and some might be smaller than other.
Here is a screenshot of what I am talking about (you might need to zoom in a bit because the image is so small): [URL] ....
And here is also some code for you. The images are actually from a sprite sheet, which I first load in its entirety and then split up in an array.
Java Code:
public static BufferedImage sprites[];
...
public void loadSprites(){
try{
BufferedImage bigImage = ImageIO.read(new File("SOURCE/BLA/BLA/THIS/IS/ACTUALLY/NOT/THE/REAL/SOURCE/IN/CASE/YOU'RE/WONDERING/I/JUST/DON'T/WANT/YOU/TO/FIND/ME/AND/RAPE/ME"));
sprites = new BufferedImage[16 * 16];
[Code] ....
So, how do I make the pixels equally small?
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Jan 16, 2014
I need to build the triangle like below. How to solve this using loops.
*
* *
* * *
* * * *
* * * * *
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Oct 29, 2014
A triangle is defined by the x- and y- coordinates of its three corner points. Compute the following the following properties of a given triangle: the lengths of all sides, the angles at all corners, the perimeter and the area. The program must prompt a user for the point coordinates. I have created a class Triangle and a class TriangleSimulator, I am stuck and can't figure out why my program won't run correctly.
import java.util.Scanner;
public class Triangle {
Scanner in = new Scanner(System.in);
private int x1;
private int x2;
private int x3;
[Code] ....
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Nov 25, 2014
class triangle
{
public static void main (String[] args)
{
System.out.println("Provide three side lengths - 000 to terminate.");
int a = In.getInt();
int b = In.getInt();
int c = In.getInt();
[code]....
My problem is that when I enter 5,2,5 it should be isosceles and acute but it comes out as isosceles and obtuse, and when I type 5,5,5 it comes out equilateral and right. The only one that works is if I enter 3,5,4 it will come out as scalene and right. I been at this for a while and my math looks correct.
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Feb 21, 2015
I'm trying to make a triangle which should look like this. But I cant seem o figure it out.
1
2 1
4 2 1
8 4 2 1
16 8 4 2 1
32 16 8 4 2 1
64 32 16 8 4 2 1
128 64 32 16 8 4 2 1
This is the code I have written so far.
public class TestProgram
{
public static void main(String[]args)
{
for (int columns=0; columns<=8; columns++)
{
for (int rows=columns; rows>=1; rows --)
{
System.out.print(rows+ " ");
}
System.out.println();
}
}
}
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Oct 17, 2014
I am having trouble getting my main triangle program to run. My teacher gave us a sample program, so I tried running his, and it doesn't run either.
Here is the class:
import java.util.Scanner;
public class ShelbyHarms_3_06_Triangle {
private double sideA, sideB, sideC; // Instance variables, numbers for area and perimeter
static Scanner console = new Scanner(System.in); // Establish keyboard
[Code] .....
My errors for the main program(the class has no errors) are:
helbyHarms_3_06.java:37: error: cannot find symbol
theSides.getSides();
^
symbol: variable theSides
location: class ShelbyHarms_3_06
[Code] ....
5 errors
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Jan 18, 2014
So the following is my code for the Terrian Generation of my game, however the way i have it rendering all the tile rectangles as opposed to just rendering whats visable on my JFrame causes lots of lag.
These are the variables and Rectangles inside _TerrianGen.class
//CHUNK
static int chunkx =2048;
static int chunky =2048;
//RECTANGLES
public static Rectangle[][] tile = new Rectangle[64][64];
static int[][] blockType = new int[64][64];
//0=Grass 1=Dirt 2=Stone 10=Brick 11=Coal 12=Iron 21=Gold 22=Diamond -1=null
This is the Init() code
for (int x =0; x < chunkx-32; x+=32){
for (int y=0; y < chunky-32; y+=32){
tile[y/32][x/32] = new Rectangle(x, y, 32, 32);
blockType[y/32][x/32] = -1;
[Code] ....
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Jun 1, 2014
i want to print triangle shape using number like
this
1
12
123
1234
12345
123456
this is my code
class shape{
public static void main(String [] args){
for(int x =0 ; x<=6;x++){
for(int y =0 ; x > y ; y++){
System.out.print(x);
}
System.out.print("
");
}
}
}
but my output is
1
22
333
4444
55555
666666
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Sep 2, 2014
I've been having trouble with this code for about a week and I've finally got it down to one error. Here is the code:
import java.util.Scanner;
public class Triangle {
public static void main (String[] args) {
Scanner Console = new Scanner(System.in);
System.out.print("Please enter the three lengths of your Triangle: ");
double a = console.nextDouble();
[Code] ....
And here is the error:
Triangle.java:30: error: class, interface, or enum expected
} // End class
^
1 error
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Nov 21, 2014
import java.util.Scanner;
public class justin10a
{
public static void main(String [] args)
{
int n;
n = getSize();
[Code] .....
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Jul 7, 2014
I am trying to make a program that prints triangle... and I did various test on each method to realise that the problem lies with this segment.When I call this method, nothing prints out, I figure there is something with the loop that I am not realizing.the loop is backwards because it's supposed to have the right side edge parralel (when I try to print it out the spaces do not appear, imagine the x are space...), so as each line is looped the # of spaces diminishes
xxxx*
xxx*x*
xx*xx*
x*xxx*
*****
public class test {
public static void main(String[] args){
for (int countdown = 5; countdown <= 1; countdown = countdown--){
showNTimes(countdown, ' ');
showNTimes(5- countdown, '*');
System.out.println("");
}
}
public static void showNTimes ( int nbTimes, char carac ) {
for ( int i = 1 ; i <= nbTimes ; i = i + 1 ) {
System.out.print( carac );
}
}
}
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Mar 15, 2014
So in the code below I create an instance of my own triangle class and use one of its methods. The thing is I use one of my triangle classes methods in a method other the main method of my main program so I'm thinking it can't access it?
Any way here's the code for my triangle class
import java.util.Scanner;
public class QudratullahMommandi_Triangle_06 {
Scanner keyboard = new Scanner(System.in);
private double side1;
private double side2;
private double side3;
[Code] ....
and here's the error message
QudratullahMommandi_S_06.java:46: error: cannot find symbol
{ triangle1.outPut();
^
symbol: variable triangle1
location: class QudratullahMommandi_S_06
1 error
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