How does one go about giving a title to the axis in prefuse scatter plot?
At the moment my code reads the data from the file and a range for both x and y axis works in the code. All I need to do now is to add titles/names for the axis. The code I have at the moment shows:
//set up the actions
AxisLayout xaxis = new AxisLayout(group, "GD",
Constants.X_AXIS, VisiblePredicate.TRUE);
AxisLayout yaxis = new AxisLayout(group, POINTS,
Constants.Y_AXIS, VisiblePredicate.TRUE);
//yaxis.setScale(Constants.LOG_SCALE);
yaxis.setRangeModel(receiptsQ.getModel());
receiptsQ.getNumberModel().setValueRange(0,120,0,120);
xaxis.setLayoutBounds(m_dataB);
yaxis.setLayoutBounds(m_dataB);
// sets group,axis,values,bounds
AxisLabelLayout ylabels = new AxisLabelLayout("ylab", yaxis, m_ylabB);
NumberFormat nf= NumberFormat.getInstance();
nf.setMaximumFractionDigits(0);
ylabels.setNumberFormat(nf);
// AxisLabelLayout xlabels = new AxisLabelLayout("goal diff", xaxis, m_xlabB, 15);
AxisLabelLayout xlabels = new AxisLabelLayout("xlab",xaxis,m_xlabB,5);
// vis.putAction("xlabels", xlabels);
vis.putAction("xlabels", xlabels);
You have to do it by hand. I've done this and my code is open source, so you're welcome to take a look at it:
https://github.com/brycecr/msmexplorer/blob/acacia/MSMExplorer/src/edu/stanford/folding/msmexplorer/util/axis/AxisRotateRenderer.java
https://github.com/brycecr/msmexplorer/blob/acacia/MSMExplorer/src/edu/stanford/folding/msmexplorer/util/axis/AxisLabelLabelLayout.java
In the label renderer, all the labels are drawn as a combination of a line and a label. In this class, we just add an additional item to the layout with our graph.
This is not super clean at all...in particular, a line (actually one pixel) is still rendered for the label, but I'm lazy and this suits my needs...I think you could improve this if necessary, but you'd probably need to reach into the axis renderer and make it draw no line for your label items.
Let me know if you have any questions about the operation of this.
#Override
public void run(double frac) {
super.run(frac);
setLabPos(item, length/2.0d + width, bounds);
}
/**
* Set the layout values for an axis label item.
*/
protected void setLabPos(VisualItem item, double xOrY, Rectangle2D b) {
switch (getAxis()) {
case Constants.X_AXIS:
xOrY = super.isAscending() ? xOrY + b.getMinX() : b.getMaxX() - xOrY;
PrefuseLib.updateDouble(item, VisualItem.X, xOrY);
PrefuseLib.updateDouble(item, VisualItem.Y, b.getMaxY() + label.getFont().getSize()/3.0d + gridLab.getFont().getSize());
PrefuseLib.updateDouble(item, VisualItem.X2, xOrY);
PrefuseLib.updateDouble(item, VisualItem.Y2, b.getMaxY() + label.getFont().getSize()/3.0d + gridLab.getFont().getSize());
break;
case Constants.Y_AXIS:
xOrY = super.isAscending() ? b.getMaxY() - xOrY - 1 : xOrY + b.getMinY();
PrefuseLib.updateDouble(item, VisualItem.X, b.getMinX());
PrefuseLib.updateDouble(item, VisualItem.Y, xOrY);
PrefuseLib.updateDouble(item, VisualItem.X2, b.getMinX());
PrefuseLib.updateDouble(item, VisualItem.Y2, xOrY);
}
}
}
Related
I am building a webstore, where the quantity of displayed products is dinamically changing, by pressing "Show more" button. Background color should be changing multiple times while scrolling down and I found this article, which solves this problem, but it has fixed page height. Is it possible to change that?
You use a parameter to control the adaption rate and set this according to your needs if you don't know the page size on forehand (because a dynamic load for instance).
cStart = [250, 195, 56] // Gold
, cEnd = [179, 217, 112] // Lime
, cDiff = [cEnd[0] - cStart[0], cEnd[1] - cStart[1], cEnd[1] - cStart[0]];
$(document).ready(function(){
$(document).scroll(function() {
var speed = 0.0005;
var p = $(this).scrollTop()* speed;
p = Math.min(1, Math.max(0, p)); // Clamp to [0, 1]
var cBg = [Math.round(cStart[0] + cDiff[0] * p), Math.round(cStart[1] + cDiff[1] * p), Math.round(cStart[2] + cDiff[2] * p)];
$("body").css('background-color', 'rgb(' + cBg.join(',') +')');
});
});
Here is the situation. In my app I have an overlay layer that is composed of a transparent PNG. I have replaced the hitarea for the png with a 1x1 image using the following code:
[Bindable]
[Embed(source = "/assets/1x1image.png")]
private var onexonebitmapClass:Class;
private function loadCompleteHandler(event:Event):void
{
// Create the bitmap
var onexonebitmap:BitmapData = new onexonebitmapClass().bitmapData;
var bitmap:Bitmap;
bitmap = event.target.content as Bitmap;
bitmap.smoothing = true;
var _hitarea:Sprite = createHitArea(onexonebitmap, 1);
var rect:flash.geom.Rectangle = _box.toFlexRectangle(sprite.width, sprite.height);
var drawnBox:Sprite = new FlexSprite();
bitmap.width = rect.width;
bitmap.height = rect.height;
bitmap.x = -loader.width / 2;
bitmap.y = -loader.height / 2;
bitmap.alpha = _alpha;
_hitarea.alpha = 0;
drawnBox.x = rect.x + rect.width / 2;
drawnBox.y = rect.y + rect.height / 2;
// Add the bitmap as a child to the drawnBox
drawnBox.addChild(bitmap);
// Rotate the object.
drawnBox.rotation = _rotation;
// Add the drawnBox to the sprite
sprite.addChild(drawnBox);
// Set the hitarea to drawnBox
drawnBox.hitArea = _hitarea;
}
private function createHitArea(bitmapData:BitmapData, grainSize:uint = 1):Sprite
{
var _hitarea:Sprite = new Sprite();
_hitarea.graphics.beginFill(0x900000, 1.0);
for (var x:uint = 0; x < bitmapData.width; x += grainSize)
{
for (var y:uint = grainSize; y < bitmapData.height; y += grainSize)
{
if (x <= bitmapData.width && y <= bitmapData.height && bitmapData.getPixel(x, y) != 0)
{
_hitarea.graphics.drawRect(x, y, grainSize, grainSize);
}
}
}
_hitarea.graphics.endFill();
return _hitarea;
}
This is based off the work done here: Creating a hitarea for PNG Image with transparent (alpha) regions in Flex
Using the above code I am able to basically ignore the overlay layer for all mouse events (click, double click, move, etc.) However, I am unable to capture the right click (context menu) event for items that are beneath the overlay.
For instance I have a spell check component that checks the spelling on any textitem and like most other spell checkers if the word is incorrect or not in the dictionary underlines the word in red and if you right click on it would give you a list of suggestions in the contextmenu. This is working great when the text box is not under the overlay, but if the text box is under the overlay I get nothing back.
If anyone can give me some pointers on how to capture the right click event on a textItem that is under a transparent png that would be great.
I am trying to use manipulation on a UI element (rectangle) and can rotate and translate it without problem. What I would like to achieve is to make another UI element (ellipse for example) to follow the first (rectangle).
If I apply the same transform group -that I used for rectangle- to ellipse, during translation manipulation it works fine but during rotation ellipse does not follow rectangle.
I think I somehow must find a suitable composite transform center Point to provide to ellipse but I can not figure out how.
Here is corresponding sample code.
public MainPage()
{
this.InitializeComponent();
rectMy.ManipulationMode = ManipulationModes.None | ManipulationModes.TranslateX | ManipulationModes.TranslateY | ManipulationModes.Rotate;
rectMy.ManipulationStarted += rectMy_ManipulationStarted;
rectMy.ManipulationDelta += rectMy_ManipulationDelta;
rectMy.ManipulationCompleted += rectMy_ManipulationCompleted;
transformGroup.Children.Add(previousTransform);
transformGroup.Children.Add(compositeTransform);
rectMy.RenderTransform = transformGroup;
}
void rectMy_ManipulationCompleted(object sender, ManipulationCompletedRoutedEventArgs e)
{
e.Handled = true;
}
void rectMy_ManipulationDelta(object sender, ManipulationDeltaRoutedEventArgs e)
{
previousTransform.Matrix = transformGroup.Value;
Point center = previousTransform.TransformPoint(new Point(rectMy.Width / 2, rectMy.Height / 2));
compositeTransform.CenterX = center.X;
compositeTransform.CenterY = center.Y;
compositeTransform.Rotation = e.Delta.Rotation;
compositeTransform.ScaleX = compositeTransform.ScaleY = e.Delta.Scale;
compositeTransform.TranslateX = e.Delta.Translation.X;
compositeTransform.TranslateY = e.Delta.Translation.Y;
}
void rectMy_ManipulationStarted(object sender, ManipulationStartedRoutedEventArgs e)
{
e.Handled = true;
}
OK. I understood it better now and found the solution. It is all about the center point of the composite transform (as I initially guessed). For center of the ellipse, I had to feed the center of rectangle. However the coordinate needed to be given relative to the ellipse. In my case ellipse is at the right upper corner of the rectangle so below is what I have given as composite transform center.
Point centerE = previousTransformE.TransformPoint(new Point(-rectMy.Width / 2 + ellipseMy.Width / 2, rectMy.Height / 2 + ellipseMy.Height / 2));
For rectangle, the center point for composite transform was:
Point center = previousTransform.TransformPoint(new Point(rectMy.Width / 2, rectMy.Height / 2));
Stackoverflow does not allow me to post an image to better visualize the things. Sorry!
The whole code:
previousTransform.Matrix = transformGroup.Value;
previousTransformE.Matrix = transformGroupE.Value;
Point center = previousTransform.TransformPoint(new Point(rectMy.Width / 2, rectMy.Height / 2));
compositeTransform.CenterX = center.X;
compositeTransform.CenterY = center.Y;
compositeTransform.Rotation = e.Delta.Rotation;
compositeTransform.TranslateX = e.Delta.Translation.X;
compositeTransform.TranslateY = e.Delta.Translation.Y;
Point centerE = previousTransformE.TransformPoint(new Point(-rectMy.Width / 2 + ellipseMy.Width / 2, rectMy.Height / 2 + ellipseMy.Height / 2));
compositeTransformE.CenterX = centerE.X;
compositeTransformE.CenterY = centerE.Y;
compositeTransformE.Rotation = e.Delta.Rotation;
compositeTransformE.TranslateX = e.Delta.Translation.X;
compositeTransformE.TranslateY = e.Delta.Translation.Y;
Could you please help with the endless background for the level?
I'm currently writing a primitive game using slick2d, the gameplay is similar to Mario.
I have two pictures - img1 and img2 (both 1280x480, while the screen resolution is 640x480).
Initially the X of the img2 is == (X of img1 + width of img1). I.e. its glued to the end of the img1.
When the img1 is out of the left screen border, it's X coordinate becomes img2X + imgWidth.
The logic looks right for me, but sometimes the pictures getting overstriked (a lot, approx 1/4 of the screen).
Is there any mistakes in the logic? Does the approach is good? Maybe there is more simple and right way to do so?
The pseudo-code look like below:
class BkgDrawer {
Image img1 = new Image("imgs/background/bkg1.png");
Image img2 = new Image("imgs/background/bkg2.png");
int img1Width = img1.getWidth(); //1280
int img2Width = img2.getWidth(); //1280
int screenResolution = game.getResolution; //640
Vector2f position1 = new Vector2f (0,0);
Vector2f position2 = new Vector2f (position1.x+img1.getWidth(), 0); //initially position2 is glued to the end of img1
public void render( ) {
if (position1.x + img1Width < 0) { //the img is over the left border of the screen
position1.x = position2.x + img2Width; //glue it to the end of img2
}
//the same for the img2
if (position2.x + img2Width < 0) { //the img is over the left border of the screen
position2.x = position1.x + img2Width; //glue it to the end of img2
}
img1.draw(position1.x, position1.y);
img2.draw(position2.x, position2.y);
//move coordinate to get the background moving.
position1.x -= MOVING_STEP;
position2.x -= MOVING_STEP;
}
}
Sorry for the lot of text and thanks
I have found only one bug and it will only have an affect if the two images have different widths: Your two if-statements use the same width img2Width
You may have noticed that you have duplicate code to handle the rendering and repositioning of each background. Might I suggest that you refactor the background code into a Background class that contains the background image, position, and and update method that repositions it by MOVING_STEP. You will avoid mistakes like the one I mentioned above.
How to draw a triangle in a math graph which displays X and Y axis.
To draw shapes using ActionScript2, you can use the moveTo() and lineTo() methods of the MovieClip object. You can specify line colour and thickness with lineStyle(), or make a solid shape using beginFill() and endFill().
So to draw your graph and triangle you could do the following steps:
Make a movieClip named "graph"
Define how big your graph should be (using the flash.geom.Rectangle object)
Draw a grey background using graph.beginFill(grey) and then moveTo() and lineTo()
Draw some blue lines at regular intervals for a grid
Draw the X and Y axes on the side and bottom of your grid
Make a second movieClip named "shape"
Pick 3 random points: moveTo(point1), lineTo(point2), lineTo(point3), lineTo(point1)
Here's how the code might look:
import flash.geom.Point;
import flash.geom.Rectangle;
function drawGraph(mc:MovieClip, rect:Rectangle):Void {
//this is a function to draw the graph
//draw the background
mc.beginFill(0xF8F8F8);
mc.moveTo(rect.left, rect.bottom);
mc.lineTo(rect.left, rect.top);
mc.lineTo(rect.right, rect.top);
mc.lineTo(rect.right, rect.bottom);
mc.lineTo(rect.left, rect.bottom);
mc.endFill();
//draw a grid
var unit:Number = 20;
mc.lineStyle(1, 0x0000FF, 20, true, "none", "round", "round");
var i:Number=rect.x;
do {
i=i+unit;
mc.moveTo(i, rect.bottom);
mc.lineTo(i, rect.top);
} while (i<rect.right);
i=rect.bottom;
do {
i=i-unit;
mc.moveTo(rect.left, i);
mc.lineTo(rect.right,i);
} while (i>rect.top);
//draw the axes
mc.lineStyle(2, 0x808080, 100, true, "none", "round", "round");
mc.moveTo(rect.left, rect.bottom);
mc.lineTo(rect.left, rect.top);
mc.moveTo(rect.left, rect.bottom);
mc.lineTo(rect.right, rect.bottom);
}
function randomPoint(rect:Rectangle):Point {
//this is a function which returns a random point within rect
var p:Point = new Point(rect.x+Math.random()*rect.width, rect.y+Math.random()*rect.height);
return p;
}
function drawTriangle(mc:MovieClip, rect:Rectangle):Void {
//this is a function to draw the triangle
// pick 3 random points within rect
var p1:Point = randomPoint(rect);
var p2:Point = randomPoint(rect);
var p3:Point = randomPoint(rect);
//connect the points to make a triangle
mc.lineStyle(3, 0xFF0000, 100, true, "none", "round", "round");
mc.moveTo(p1.x, p1.y);
mc.lineTo(p2.x, p2.y);
mc.lineTo(p3.x, p3.y);
mc.lineTo(p1.x, p1.y);
}
//make the 'graph' clip:
var myGraph:MovieClip = this.createEmptyMovieClip("myGraph", this.getNextHighestDepth());
//define the graph size:
var myRect:Rectangle = new Rectangle(50,50,300,300);
drawGraph(myGraph,myRect);//draw the graph
var myShape:MovieClip = this.createEmptyMovieClip("myShape", this.getNextHighestDepth());//make the 'shape' clip
drawTriangle(myShape,myRect);//draw a random triangle
//add a function to draw a new triangle when the graph is clicked:
myGraph.onRelease = function() {
myShape.clear();//erase the old triangle
drawTriangle(myShape,myRect);//draw a new one
}
You can click the graph to generate a new random triangle.
(source: webfactional.com)
It sounds like you need to know how the drawing API works in Flash. Your question is kind of vague, but this might help to get you started - google "Flash Drawing API" for more information.
var point1:Point = new Point (0, 0);
var point2:Point = new Point (25, -50);
var point3:Point = new Point (50, 0);
var s:Sprite = new Sprite();
s.graphics.lineStyle(1, 0xff0000);
s.graphics.beginFill(0x000000);
s.graphics.moveTo(point1.x, point1.y);
s.graphics.lineTo(point2.x, point2.y);
s.graphics.lineTo(point3.x, point3.y);
s.graphics.lineTo(point1.x, point1.y);
s.graphics.endFill();
s.graphics.lineStyle(0);
s.x = (stage.stageWidth - s.width) / 2;
s.y = ((stage.stageHeight - s.height) / 2) + 50;
addChild(s);
I hope that helps, let me know if you have any questions.
NOTE: This solution is using ActionScript 3. If you need AS2 this won't work, and off the top of my head I don't know how to help but you might just try googling "AS2 Drawing API" or something to that effect.