Here's a storyboard of the CSS/JS/SVG animation I'm trying to accomplish. Two triangle masks enter from either side, then intersect resulting in a negative mask:
The point where the triangles intersect is where it gets tricky. When I export the mask for panel 4 to SVG, it looks like this:
<svg width="416px" height="289px" viewBox="0 0 416 289" version="1.1" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink">
<defs>
<path d="M211.503681,65.6626347 L507.009604,-138.787586 L507.009604,425.787586 L211.507182,221.339788 L-84,425.792431 L-84,-138.787586 L211.503681,65.6626347 Z M211.503681,65.6626347 L99,143.5 L211.507182,221.339788 L324.01001,143.502422 L211.503681,65.6626347 Z" id="path-1"></path>
</defs>
<g id="Page-1" stroke="none" stroke-width="1" fill="none" fill-rule="evenodd">
<rect id="Rectangle-1-Copy-3" fill="#F6A623" x="0" y="0" width="416" height="289"></rect>
<mask id="mask-2" fill="white">
<use xlink:href="#path-1"></use>
</mask>
<use id="Combined-Shape" fill="#000000" xlink:href="#path-1"></use>
<rect id="Rectangle-1-Copy-2" fill="#4990E2" mask="url(#mask-2)" x="0" y="0" width="416" height="289"></rect>
</g>
</svg>
It looks like it's basically drawing two shapes, the negative-space diamond mask in the center and the remainder of the outer triangles.
So the static mask itself appears to be possible with SVG, but I don't know how to animate it. Is there a library that can simplify this kind of SVG transition/tweening, or a fancy math equation that can calculate the paths dynamically?
Or am I looking at this the wrong way entirely and there's a much easier way to do it altogether?
So the solution was to make it both more simple AND more complicated.
Instead of two layers on top of each other with one mask, I needed three layers. One on the bottom to show behind the first mask, the second to be masked by the incoming triangles, and a third layer above that, duplicate to the first, where a diamond-shaped mask is applied.
<svg width="500" height="300" viewbox="0 0 500 300">
<defs>
<clipPath id="triangles">
<path id="left" d="M-250,-150 L250,150 L-250,450 Z" fill="black" />
<path id="right" d="M250,150 L750,-150 L750,450 Z" fill="black" />
</clipPath>
<clipPath id="diamond">
<path id="diamond-path" d="M250,0 L500,150 L250,300 L0,150 Z" fill="black" />
</clipPath>
</defs>
<!-- bottom -->
<g id="bottom">
<rect fill="darkorange" x="0" y="0" width="500" height="300" />
<text x="50%" y="65%" text-anchor="middle" class="text">Text</text>
</g>
<!-- middle/triangles -->
<g id="middle" clip-path="url(#triangles)">
<rect fill="dodgerblue" x="0" y="0" width="500" height="300" />
<text x="50%" y="65%" text-anchor="middle" class="text">Text</text>
</g>
<!-- top/diamond -->
<g id="top" clip-path="url(#diamond)">
<rect fill="darkorange" x="0" y="0" width="500" height="300" />
<text x="50%" y="65%" text-anchor="middle" class="text">Text</text>
</g>
</svg>
The top layer with the diamond path starts out scaled to 0, making it invisible. The two triangle clip paths are animated in towards each other, showing the bottom layer underneath. When the two triangle points meet, the diamond clip path on the top layer is scaled up, revealing the top layer which is a duplicate of the bottom.
I also switched to clip paths instead of masks because they're a) better supported and b) allow for multiple paths.
Here's a Codepen using CSS for the animations (only works in WebKit for the moment).
UPDATE: Here's a Codepen using GSAP that works in all browsers: http://s.codepen.io/kgrote/debug/mPxzZY
Related
I have a circular, image mask set up in HTML to cover an image.
Here is that code for reference:
<div id="group-focus">
<svg height="800" viewbox="0 0 1000 800">
<defs>
<mask id="text-mask" maskUnits="userSpaceOnUse"
maskContentUnits="userSpaceOnUse">
<circle cx="600" cy="400" r="400" fill="white">
</mask>
</defs>
<!-- this is the image that I masked -->
<g mask="url(#text-mask)">
<image id="text-focus" width="2560" height="1440"
y="0" x="0" xlink:href="img/Asset13x.png" />
</g>
</svg>
</div>
Because I have the mask size set in HTML to the size I want, I am unsure of how to go about expanding the mask to a different size. Can you animate a mask in Javascript? This is for a motion graphic project I am working on currently.
Thanks!
I try to make SVG text (wrapped in <text> of course) place on SVG <rect>.
And I want to make it look like text centered in my rect.
But strange thing I got there, it looks not like I assumed.
It looks like this
When I assumed it gonna be look like that
Whats wrong with that?
First I tought that equal x and y in <text> and <rect> will work, but it was like in picture below
I tought that y="50%" in text will force text to ancor somewhere in the middle. But I can achieve in only at y="80%" as you can see.
Original markup is here
<svg height="500" width="500" class="ng-scope">
<svg height="50" width="393.703125" y="0">
<g>
<rect x="0" y="0" height="50" width="393.703125" style="fill: #A8A8A8">
</rect>
<text font-family="Airal" font-size="45" x="0" y="50%" inline-size="200">
TEST TEXT IN SVG
</text>
</g>
</svg>
</svg>
The y property is per default applied to the text bottom line - so there is a difference between the y-position of a text and the y-position of lines, rectangles, or other shapes.
You can use the alignment-baseline property e.g. with middle to achieve better results. Here's the w3c description with many more options.
<svg height="500" width="500" class="ng-scope">
<svg height="50" width="393.703125" y="0">
<g>
<rect x="0" y="0" height="50" width="393.703125" style="fill: #A8A8A8">
</rect>
<text font-family="Airal" font-size="45" x="0" y="50%" inline-size="200" alignment-baseline="middle">
TEST TEXT IN SVG
</text>
</g>
</svg>
</svg>
add viewBox. Again i am not expert at svg , have done just some work but this may work.
<svg height="500" width="500" class="ng-scope">
<svg height="50" width="393.703125" y="0" viewBox="0 0 90 90">
<g>
<rect x="0" y="0" height="50" width="393.703125" style="fill: #A8A8A8" >
</rect>
<text font-family="Airal" font-size="45" x="0" y="50%" inline-size="200">
TEST TEXT IN SVG
</text>
</g>
</svg>
</svg>
I am studying some basic image manipulations with SVG and trying to find optimal approach for the following challenge:
We have one SVG file which has various SVG elements (circles, rectangle, triangle). They all are overlapping each other creating new "areas" of different forms (see pic).
So filling actual Elements - no problem there. But what if I want to fill with color only specific intersect area?
My current thinking was:
Consider drawing all elements as Paths, then see if I can treat overall composition as One large path and then play with fill-rule.
Consider calculating the area shape and drawing a new shape on top of it, then fill it.
Consider something else?
Michael's filter method is cool and tricky, but perhaps a little hard to understand.
You can also do it with masks.
<svg width="391" height="400">
<defs>
<!-- define the shapes in the image, which we will use for the outlines
and for creating intersection masks -->
<rect id="square" x="92" y="48" width="218" height="218"/>
<polygon id="triangle" points="54,366 277,366 165,142"/>
<circle id="circle" cx="256" cy="264" r="85"/>
<!-- the masks -->
<!-- white parts are visible, black parts are invisible -->
<mask id="square-minus-triangle">
<!-- square with triangle cut out of it -->
<use xlink:href="#square" fill="white"/>
<use xlink:href="#triangle" fill="black"/>
</mask>
<mask id="triangle-minus-square">
<!-- triangle with square cut out of it -->
<use xlink:href="#triangle" fill="white"/>
<use xlink:href="#square" fill="black"/>
</mask>
</defs>
<!-- background -->
<rect width="100%" height="100%" fill="#e5e4da"/>
<!-- the intersection shapes (yellow) -->
<!-- first draw the circle, but use the square-minus-triangle mask.-->
<use xlink:href="#circle" fill="#e4e400" mask="url(#square-minus-triangle)"/>
<!-- draw the circle again, but use the triangle-minus-square mask.-->
<use xlink:href="#circle" fill="#e4e400" mask="url(#triangle-minus-square)"/>
<!-- draw the outlined shapes -->
<g fill="none" stroke="black" stroke-width="6">
<use xlink:href="#square"/>
<use xlink:href="#triangle"/>
<use xlink:href="#circle"/>
</g>
</svg>
You can do this with filters. An easy way to do is to use near transparent fill and then use a filter to dial the non-overlapping areas to fully transparent and the overlapping areas to fully opaque. It makes the stroke a little crispy though.
<svg height="600px" width="800px">
<defs>
<filter id="opacitychange">
<feComponentTransfer>
<feFuncA type="linear" intercept="-.05"/>
</feComponentTransfer>
<feComponentTransfer>
<feFuncA type="gamma" amplitude="4" exponent=".4"/>
</feComponentTransfer>
</filter>
</defs>
<g filter="url(#opacitychange)">
<circle stroke="black" fill="blue" fill-opacity="0.05" cx="150" cy="150" r="100"/>
<rect stroke="black" x="200" y="100" width="100" height="300" fill="blue" fill-opacity="0.05"/>
<polygon stroke="black" points="50,50 50,400 300,400" fill="blue" fill-opacity="0.05"/>
</g>
</svg>
As shown in this fiddle it's possible to render a CSS sprite in SVG using the foreignObject element.
However this isn't supported in IE, so I was wondering if there was another way to do it.
I suspect the answer may be no, because I found two unresolved questions on this (1,2)
I'm using d3.js so any answer that spells out the d3 way to do this would be a bonus.
You could pick out parts of an image using a clipPath if necessary. Extend your jsfiddle like this to see what I mean...
<div class='source youtube'></div>
<svg width="100%" height="100%">
<foreignObject height=50 width=50>
<div class='source facebook'></div>
</foreignObject>
<defs>
<clipPath id="c">
<rect y="10" width="7" height="10"/>
</clipPath>
<clipPath id="c2">
<rect x="7" y="12" width="7" height="10"/>
</clipPath>
</defs>
<image transform="scale(4.5)" y="-5" width="40" height="20" xlink:href="https://s3.amazonaws.com/856/sprite.png" clip-path="url(#c)"/>
<g transform="translate(-30, 0)">
<image transform="scale(4.5)" x="0" y="0" width="40" height="20" xlink:href="https://s3.amazonaws.com/856/sprite.png" clip-path="url(#c2)"/>
</g>
<svg>
I have the following svg:
<svg
width="1750"
height="1125"
xmlns="http://www.w3.org/2000/svg"
xmlns:xlink="http://www.w3.org/1999/xlink">
<g>
<g id="svg_4">
<g id="imgG_4">
<image
transform="rotate(35.3608 608.333 503.301)"
xlink:href="https://www.google.com/images/srpr/logo4w.png"
id="img_4"
height="188.79927"
width="188.79927"
y="408.90001"
x="706.21582"/>
</g>
<rect
transform="rotate(35.3608 783.333 667.587)"
id="border_4"
height="264.31644"
width="360.92146"
y="535.42838"
x="602.87256"
fill-opacity="0"
stroke-width="5"
stroke="#000000"
fill="#000000"/>
</g>
</g>
</svg>
I'd like to change the angle of the both the rect and image. I cannot however, figure out how to adjust the image such that its spacing within the rect is consistent as i rotate the rect.
E.g. After rotating both the rect and the image the image has the same amount of whitespace above and to the left as it did prior to rotation of both elements.
I cannot put the rotation on the container groups due to other technical restraints.
I'd like to end up with something like:
<svg
width="1750"
height="1125"
xmlns="http://www.w3.org/2000/svg"
xmlns:xlink="http://www.w3.org/1999/xlink">
<g>
<g
id="svg_4">
<g
id="imgG_4">
<image
transform="rotate(70.3608 608.333 503.301)"
xlink:href="https://www.google.com/images/srpr/logo4w.png"
id="img_4"
height="188.79927"
width="188.79927"
y="408.90001"
x="706.21582"
/>
</g>
<rect
transform="rotate(70.3608 783.333 667.587)"
id="border_4"
height="264.31644"
width="360.92146"
y="535.42838"
x="602.87256"
fill-opacity="0"
stroke-width="5"
stroke="#000000"
fill="#000000"
/>
</g>
</g>
</svg>
The caveat is that the x,y values have to change on the image in order to get the layout correct and I have know idea how to calculate them.
Any idea on how I would go about this? I will be using javascript to do the math involved...
Plnkr is here
Assuming you wanted to rotate both elements around the same rotation point as the rectangle (ie. 783.333,667.587), then all you need to is apply the additional rotation to the front of both element transforms. So:
<image transform="rotate(90 783.333 667.587) rotate(70.3608 608.333 503.301)"
<rect transform="rotate(90 783.333 667.587) rotate(70.3608 783.333 667.587)"
would rotate both elements an additional 90deg round the above centre of rotation.
However you said you want to do the maths yourself in Javascript. So to get you started, it might help to know that the transform:
rotate(r x y)
is equivalent to:
translate(x y) rotate(r) translate(-x -y)