So, here's what I'm attempting to do:
I have an image of a target, and I'd like to dynamically place the location of each arrow on the target. I'd also like to have the shot location be referenceable with a dynamically generated tooltip (JQuery?) so that when the user hovers over the shot location, they can see what the score for that shot is.
So, in the image shown here, the "target" is a standard image and the numbers (in white) are added based upon data in my database and indicate the shot sequence and approximate location of that shot. I'm storing the location in two parts: score and clock position. So, for the second shot, the score is "5" and the clock position is 14:30 (approximately!) For the third shot, the score is "2" and the clock position is 16:15.
What's my best approach? I think I can use the PHP GD libraries to get the shot sequence number added to the base image, but I'm not sure how to get the hover/tooltip to work in conjunction with this.
Update: Mission accomplished: here's the semi-finished product:
If you want JavaScript to be able to interact with it, you might be better just having a <div> with the target as a background-image, then placing more <div>s with position:absolute in the right places, applying the tooltips to these. Much simpler than generating the image in PHP and then implementing tooltips over certain areas.
Related
I'm working on a basic map that is organized in the standard X/Y coordinate fashion. At each coordinate (x,y), there are contents that are stored in the database (the contents for each location is loaded via php/mysql database).
At my current setup, the map is just placed in the page as a static object, and I've used jquery/ajax to update the display and data for the coordinates.
I'm looking for a way to have a dynamically loaded click & Drag map, that will load cells as they are needed. (what ever comes into your view--in this case the window, should be loaded from the server--a div be created with the proper coordinates relative to its surrounding cells).
As of right now, my static map has this setup:
http://i.stack.imgur.com/LeVYO.gif (link because i cannot post pics)
The images are placed row by row (z index changing as each row goes down to give the appearance of overlap).
If that same pattern were to be duplicated, to dynamically create those cells, you can see that when a row sticks out on the right side, there is room on the left side, leaving easy overlapping.
I haven't been able to find any way to accomplish this:
1) When a cell (region with multiple coordinates inside) is visible, check to see if the surrounding 8 cells are already loaded.
2) If a surrounding 1 of 8 cells are not loaded, create the cell in the correct position, and assign the 'center coord' so that the generated data has a reference point.
3) Ensure that the cells are movable via click&drag, as well as the ability to click on the objects under (to interact).
4) Cells cannot be accessed by scrolling (scroll bar)
I have a feeling its fairly complicated, but I'm looking for the best way to do it, so ANY help or direction would be great!
With all my desire to help, I really cannot give the answer that will solve the problem, which I apologize for, but I think I can try to direct you to something.
It's the HTML 5's canvas and relative functions.
Look at that:
http://www.html5canvastutorials.com/advanced/html5-canvas-mouse-coordinates/
Maybe also you have to look at how a MAP is built with HTML 5
After tinkering, and lots of google searching, a quick search for "jquery infinite drag" returned this result:
http://ianli.com/infinitedrag/
I managed to use the function call provided when each cell is created, to gather map data from the database (ajax) and create the cells as needed.
http://mc1.empirebattles.com/map/jquery_map.html
I REALLY like the way its working so far, except that if i want to be able to click on anything under the map (for actions and such), the click event is called whenever i release the click for dragging the map around.... i've tried jquery's UI doubleclick, but it appears this plugin takes control as soon as double click is called
Anyways, incase anyone else needs something similar to this, this solution has helped me lots!
I'm using Wordpress and using their code, I'm outputting the gallery uploads to a specific page as an unordered list of images.
I'm wondering if there's a way to position these images absolutely within the container (which will be relative) using JS and without any overlapping? So, it must position them and then take note where that image is and make sure the next image doesn't overlap etc.
This should be a random generation each time, but I'm also wondering if it's possible to make the images and their position the same each time?
Thanks guys, look forward to some thoughts.
-R
EDIT: You can see the HTML and progress so far here: http://richgc.com/freelance/staton/furniture/
There are a few jquery plugins that do this.. Here is one:
http://masonry.desandro.com/
Go with #lucuma's answer (I didn't know there were pre-existing plugins).
If you were going to implement such a plugin by hand, you could use a cutting algorithm, traditionally used for optimizing the cutting out of parts from sheet metal, to determine locations for your images that will not overlap.
If you select a deterministic algorithm, you should always get placeholders for images in the right place. Were images always of different sizes, that would ensure images always appear in the same place. Since many images will probably be the same size, you could assign images to the "cut out slots" in e.g. alphabetical order of the image file name.
I'm trying to figure out via PHP if I can do the following. Imagine I have a two images. The first is an image of a square (50px by 50px). The second image, is that exact same square, only offset by 5px to the left.
I'm wondering if there is a way to dynamically generate all the images in-between to make this a smooth looking image transition (ie in this case generate the other 4 images to make it look like it moved from left to right). This would be a pretty simple situation, however would be applied to more complex images with the exact same premises, essentially using two images to predict the mediums.
Thank you in advance for your help
php would only be a wrapper, think eval() and google it, like http://www.linuxfocus.org/English/September2001/article139.shtml
regards,
/t
I believe the best thing you could hope to do with PHP is to do a 'morph' animation, where you sample the pixels for the first image and the second image, then create a third image consisting of the average color values. Repeating this process you could create as many sub-frames as you would like, but the result would be a blurring / morphing of image A -> image B, and would only be perceived as an animation with the simplest of input images.
More complicated algorithms including edge-detection or hinted-shape tweening could be utilized and implemented, however PHP might not be the best choice for this.
You can dynamically create images with a combination of PHP and ImageMagick.
You can pass in each dimension to ImageMagick, and it will generate an image on the fly for you. Create an image for each pixel you offset, resulting (in this case) in four extra images you can use later for your animation.
I'm trying to find some way to convert a number 1 - 5 into a star rating, which can also accomodate decimals, like 4.3 or 3.34, and be very precise (like on Amazon.com). The rating doesn't have to be usable, it just has to be a static image. Any help?
I'm fine with using PHP or jQuery, whichever it needs to be.
You could create an image that is white with transparent star cutouts. Then place that over the top of a yellow div of a given length. Lets say your image was 100px wide. If you had a 3 star rating you would make the yellow div 100*(3/5) and 3 of the stars would be filled in.
EDIT:
A similar idea. You could have an image with all 5 stars on it. Place this image within a div with overflow:hidden. Then you set the width of the div the same way as above. The smaller the div the less stars you'll see.
EDIT2:
Fiddle just for fun. All the granularity you could ask for.
http://jsfiddle.net/qFMyC/
This must be sufficient for your purpose:
http://www.fyneworks.com/jquery/star-rating/#tab-Testing
I wrote this ages ago. I was obsessed with not using JS. It needs some work, but I think it's exactly what you're looking for.
http://yefomit.com/internet/simple_css_rater
I'm hoping you mean turning the 1 -5 value into an actual star representation.
It depends how granular you want to be, I think Amazon's is accurate to tenth's (0.1), this is probably achieved server side to save on client load and take advantage of caching the images; but it could be done client side.
#kingjiv posted a good client side solution but for server side:
If you're not too worried about granularity you could create 11 images 0, 0.5, 1, 1.5 etc. etc. and pass the value into the image src attribute. This would serve the right image and they'd be nicely cached for re-use over and over on your pages.
If you want to be really granular though you could create them in code server side, cache them on creation each time ready for quickly serving afterwards. With this method you could go to whatever degree of accuracy took your fancy.
For PHP I'd recommend looking at Imagik
What I have done in the past is to create 2 divs and put them on top of each other.
On the bottom div you set the width equal to the width of 5 stars. So, if your star is 50px wide, your bottom div is 250px wide.
On the top div you use the same star with a different color. Then you set the width of that div in php or javascript to 50 * $decimalStarRating.
I am trying to create a dynamic image that will be created from PHP using GD... What I need to do is be able to specify the layering of one image over another. The images are supposed to overlap slightly and get smaller as you move towards the right of the image... however the only way I can get php to render the images to the left on top of the ones to the right is by reversing the script.
I would like some sort of way to be able to add the images 1 by 1 to the picture from left to right but having the image on the left overlap the one on the right....
Exactly like z-index in PHP, is there a way to do this?
Image manipulation in GD is additive, AFAIK. If you are going to manipulate an image (in your case, create a composite image), then you need to start with a base (maybe a solid background) then add pieces to it.
You can get the effect that you want by performing one of the two procedures:
take the "left to right" stack that you have and reverse it, applying images to the composite from right-to-left.
go "left-to-right" and calculate which part of each image will show around the previous image (to its left). This method is significantly more complicated because the image on the "lower z-index" can show around up to four corners of the image to it's left.