The bottom and left borders match the platform and the side of the right wall, giving the impression of depth. Two borders are used to create the effect. Transform: translate3D(450px, 34px, 4px) We need to rotate the entire scene to see it properly. The end result of all this should be a scene that looks like this: Transform: rotateX(90deg) translateY(88px) translateX(253px) translateZ(-41px) Transform: rotateX(90deg) translateY(396px) translateX(253px) translateZ(-13px) To adjust for this, we’ll rotate the entire stage 45 degrees later.īefore applying transforms however, we need to give the divs some shared properties: With that in mind, the HTML elements are transformed into place according to the following sketch:Īs the sketch shows, the back-left piece is aligned to the left, but the back-right piece is right in front of the viewer. However since the scene is being viewed from an isometric angle, an easier approach is to place the parts of the scene and then rotate the entire scene 45 degrees at once. When I started building this scene, I tried to place the walls directly onto the stage, rotating it and adjusting its position. They take the form of back pieces, platforms, the sides of the pit, and a shadow to place underneath them. A set of divs within the stage section form the main parts of the structure. The above includes a stage section, which we will be using to contain all the elements. Each of these can be stacked to create more complex transforms, for example: These adjustments can take the form of translate to move the element, rotate to adjust it’s angle, skew and even scale.
#Portal turret animation series#
The transform property consists of a series of adjustments to the HTML element. The HTML elements are placed within the 3D scene using the transform property. It also means that there aren’t as many primatives, such as circles or cubes, to draw upon. This differs from some other methods that involve describing points and lines to create shapes. This means that as you build a 3D object, you place each rectangle in place. They have a width, height, and are rectangular. The objects we position in HTML are normal HTML elements. Also keep in mind that this value can be animated, creating some interesting perspective-change effects. It will depend on the effect you want to convey. When setting up your scene, your value might be higher or lower than this. To determine these values, I adjusted the value in the Chrome web inspector panel and judged it by eye.
This will result in our point of view being above the object, looking down. In this case we’re setting it half-way across the scene, and 1,400 pixels up. The perspective-origin property takes two values, a horizontal and a vertical offset. To do this we’ll need to use an HTML element and give it the needed properties that tell the browser to expect 3D content within it.
We need to set a scene in which we can build our 3D creation. It covers some interesting 3D CSS techniques that while they aren’t yet mainstream, can prove useful in other front-end development. It uses CSS that won’t work properly in Internet Explorer. The following project has been developed and tested primarily in Chrome.
#Portal turret animation full#
Full versions of the CSS and SASS can be found on Github along with the HTML. Otherwise, be aware that most browser prefixes will need to applied.
#Portal turret animation free#
I would recommend either using something like prefix free or SASS to manage these for you. I’ve removed the prefixed versions of rules in the following CSS. In particular, this is the scene that will be created: In this post I will see if this cartoony style can be reproduced using nothing but HTML and CSS. The isometric, cartoony graphics in the introduction video are very different from the game yet manage to capture some of it’s style. Portal (which was developed from Narbacular Drop) introduced a fun twist on the 3D platform genre. This video blew my mind when it was first released.
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