I have an idea that I would like your input on how it can be achieved. Essentially, I would like to have a page where page elements would be responsive and animated. Let me give you an example - let's say I point my mouse over a button or an image and it would play an animation like http://hakim.se/experiments/html5/magnetic/02/ around it while mouse is pointing over it, fading away if I point away from it.
Alternatively, it would be cool to have something like http://hakim.se/experiments/html5/trail/03/ flowing from current mouse position to the element that I would like to draw user's attention to. I have little idea on how this can be implemented, thinking that creating a overlay and using element's coordinates would be most appropriate but not 100% it can be done this way. Do you have any recommendations or suggestions on best practices, existing libraries / frameworks that may assist me with this?
Thanks!
Related
I'm pretty new to SVG and how to work with them. I am not asking you for answer code, what I am asking is for some guide on maybe some plugin, maybe an article or some advice on how do I go about animating this SVG the way I wish to.
Problem:
I want to animate the picture below of the Sun, I'll be creating a vector graphic of this image obviously but what I want is these cuts in the bottom part of sun to animate and go from top to bottom revealing the background and second sun behind the main sun.
I want to do this inside a webpage so I need help regarding that.
Like I am not able to figure out how would I go about the whole process of making these cuts going down. Any help would be highly appreciated.
I would try https://rive.app/
As far as the how, I would create a short infinite loop. The horizontal bars would probably need to be their own shapes with some kind of masking effect on them to knock out the circle. You'd have to tween them to move up on the Y axis and let the height shrink to nothing as it moves up. The animation would probably only be 250-750ms. Let me know if that works!
So we have this major project and we aim to create a simple wayfinding system through the use of inline SVG that includes zooming and panning feature and is targeted to be deployed on touchscreen units. We wanted to create something similar like google maps or something like this: http://bl.ocks.org/mbostock/3892919
We really wanted to use this plugin but everything are predefined in the script and we really don't know how to do it on inline SVGs (or maybe someone help us explain how the whole code works and maybe teach how to make it work on inline SVGs because we're pure amateurs.). I've looked for a lot of plugins but they all seem to not fit the need.
When in doubt, just scale/move everything.
Zooming essentially involves making the elements bigger/smaller
according to your zoom level and panning involves making the elements
move in relation to your viewport.
So:
On each zoom level, iterate over all your paths and scale them by the
appropriate coefficient.
For panning you can just translate(move) your SVG elements to the
opposite direction of which you are panning towards.
You can learn more about scaling/translating SVG elements by having a look at: SVG transformations
On the other hand some Googling(meaning the 1st result that pops), turns this neat library, which looks pretty straightforward for your purposes.
The idea is that there'll be a 3D animation looping (an idle character, probably rotating) and it will change to another animation when someone hovers the cursor over it (say, the character getting nervous), and another animation when clicked (say, the character startling). But if I use the old way of just changing the video it will look kind of weird because it will change drastically most of the time, how do I make this transition look good?
I'm kind of new to HTML so maybe it's easier than what I think, but I really have no idea of how to achieve this. Thank you in advance for your answers! :)
Two options, make it an actual 3d model (hard) or control the flow of the video and wait for the video to finish before showing the next part/animation. Going down that route would require you to use HTML5 video tags for the video and you would have to look into the javascript API it exposes to control it. It's not terribly hard, but too broad an interface to cover in this answer.
I have to place on a web page a cylinder that looks like this:
it is composed by small images that overlaps to draw the curves on the surface. Every one of them is places on the page with a different img tag enveloped in an anchor with its own href. The z-index property of the img is used to make them overlap in the right way.
The cylinder has to be composed because it is dynamically created, as you can see from the image, its faces can have different colors.
What i need to do is to make all the faces clickable and each one has to point to a different URL.
My problem is, of course, that the cylinder has curves. And i have to be sure that the clicks points to the correct URL especially near the curves, it hasn't to be precise at pixel level, but at least acceptable.
I've tried to use a map with a single area for each of the images that composes the cylinder, but of course it didn't work, as i saw from the specifications, in such cases only the first declared map in the DOM works.
I'm thinking about to solve this via Javascript, but i think it wouldn't be an easy job, so i would be happy if someone can give me some advice on what should i try.
Oh, i cannot use HTML5 features to solve this.
Neat application of older technology to solve a challenging puzzle.
I can think of two ways forward for you. One is to put a transparent (rectangular) image on top of the cylinder and create an HTML image map, using the shape="poly" attribute. For resources, search for the HTML elements map and area for reference, especially the shape attribute. There should be many good tutorials online. Nowadays this technique isn't used that much any more, but it was really popular in the late 90s.
Another way is to use event delegation in javascript, attaching an event listener to the primary container. On each of your image "pixels" apply a CSS class for the appropriate portion of the cylinder it is in. In your event handler, you can do something differently depending on the class of the clicked on image, and you can do this without the massive overhead of attaching an event on each individual "pixel". In JQuery this would be something like:
$("#cylinder").on("click", ".green", function() { location.href = "green_url"; }
$("#cylinder").on("click", ".red", function() { location.href = "red url"; }
assuming you put class="green" on your green pixels and class="red" on your red pixels. (You can do this by quadrant or other technique; color is just an example).
Your best luck SVG ! https://developer.mozilla.org/en-US/docs/SVG/Tutorial
It is almost impossible with html dom elements to do this, you will have to bend it with CSS compatible all browsers.
There is also Canvas but you will have a hard time dealing with the clicks.
Only problem with SVG is that it's not supported in < IE8, and hardly in IE8. But bending a DOM element is also not available < IE9.
EDIT:
I saw that you can't use HTML5, so your only chance is generating the whole image in GD2 for example and trying to map the points. But what is the reason you can't use HTML5 ?
You might also try doing it using javascript / canvas via getImageData() function. This canvas function will rgba values of the given point. Using the alpha value you can check if mouse is over or clicking on the correct area or if it is a transparent area and nothing should happen.
I also made jquery plugin exactly for this purpose. Maybe it might help. http://www.cw-internetdienste.de/pixelselection/
Bit of background
I've been producing a Flash-driven webcomic for three years now, incorporating some basic animation, a synced soundtrack and zoom-drag page viewing. The recent Flash-bashing, my desire to reach iHandhelds and my preference for open versus proprietary means that I want to make the move to HTML5 techniques this year. In the long-term, I think the writing's on the wall for Adobe's product, and I'm not entirely convinced that's a bad thing.
I'm relatively comfortably with both CSS and HTML, having worked a little in web design before. However, JavaScript is a foreign country to me, and I simply wanted to get some advice as to
whether what I want to achieve can be accomplished consistently across all browsers and
what the best techniques/approaches to the problem would be.
Any advice, even general principles, are very welcome. I've already sought out several HTML5 tutorials and introductions, which lead me to believe that the canvas element will be foundational to my plan; however while all the individual problems I face have been answered by many blogposts and guides, combining the various solutions into a single entity is something I'm not currently able to figure out, as I'm not certain of the limitations of the new HTML5 tags, or of best practice.
If I'm successful in achieving what I'm after, I'm going to post the full code online with an explanation of all the elements. Webcomics might not be a huge domain, but having a resource that did this would have made my life a lot easier - hopefully it'll help someone else in a similar position.
What I'm after
Here's a diagram giving the basics of the design requirements. I'll explain the elements, and the desired extras, below.
(Perhaps the simplest way to demonstrate what I'm after would be for interested folks head over to my website and see how my comic currently works. This isn't a plug - it would simply give the quickest insight.)
At core, I'm after a viewer that will:
display text (SVG image) in a canvas element above an raster image the page's panel art
both images should be zoom-and-draggable in sync but should ideally fade in separately, with the raster image coming first, followed by the SVG image
I'm guessing that the best way to accomplish this would be to layer two canvas elements one above the other using z-index, with the SVG file in the uppermost element. These could then be nested, as in the diagram, within a div element that would carry the zoom-drag function. Is this a reasonable approach, or are there more efficient options?
The next and previous buttons are self-explanatory. Would it best to have each page (bearing in mind some will involve animation and music) on a separate page, or to have all pages within a chapter on a single page, with the buttons making them visible progressively? I imagine this would have a great impact on loading speeds.
Finally, I'd like to have the viewer capable of displaying fullscreen if the reader desires. I imagine this could be accomplished by using Javascript to make the canvas elements and their surrounding div switch between different CSS giving a px-defined size and 100% height and width. Is this a good approach? Is it possible to apply the size change to the div element only and have the canvas elements automatically follow suit, possibly by defining their size via % in CSS?
Desired extras
At various points in the comic I make use of basic animation techniques - simple movements of layered raster images across the viewing pane. This would be simple to accomplish, I imagine, using Javascript; am I correct in thinking that applying overflow:hidden to the wrapping div will prevent images larger than the viewing area from spilling outside the viewer area?
I also want to synchronise audio with some of these animations. I understand that synchronising canvas events with the audio would be the best way to do this on, permitting both to begin activity only upon page loading or next button click.
That's about everything. As said, any advice at whatever level would be greatly appreciated, even if it's 'yes' or 'no' to the various questions I've asked. At root, it would also be good to know if HTML5 is the best option for what I'm after or whether (with gritted teeth) I should stick to Flash for now and go after handhelds using Adobe AIR.