Learn to Design and Animate in 3D with Zdog

Zdog: Lightweight 3D JavaScript Engine

Zdog is a lightweight 3D JavaScript engine based on <canvas></canvas> and SVG, allowing developers to design, display and animation simple 3D models on web pages. Its concise and easy-to-use declarative API makes it popular.

Job quickly get started with Zdog

You can start using Zdog by:

• Download the library file to the local environment: https://www.php.cn/link/907ee68e550f498a93ec82d228135c00 (Compressed version) or https://www.php.cn/link/1a1a998465d96b216610e8bf342343bb (Uncompressed version)
• Get library files from CDN: https://www.php.cn/link/907ee68e550f498a93ec82d228135c00
• Install using npm: npm install zdog

Zdog core functions:

Zdog's core lies in its "pseudo 3D" rendering method. It defines geometry in 3D space but renders it into a flat shape, which allows it to achieve both 3D effects and maintains lightweight features.

Create static graphics:

The following is an example of creating a static SVG circle:

HTML:

<svg id="circle" width="100" height="100"></svg>

CSS:

#circle {
  background-color: #081d3f;
  width: 100vw;
  height: 100vh;
}

JavaScript:

let circle = new Zdog.Illustration({ element: '#circle' });
new Zdog.Ellipse({
  addTo: circle,
  diameter: 20,
  stroke: 20,
  color: '#ccc'
});
circle.updateRenderGraph();

Animation and drag:

Implement animation using requestAnimationFrame():

function animate() {
  circle.rotate.y += 0.03;
  circle.updateRenderGraph();
  requestAnimationFrame(animate);
}
animate();

Add drag and drop function:

let circle = new Zdog.Illustration({
  element: '#circle',
  dragRotate: true,
  onDragStart() { isSpinning = false; },
  onDragEnd() { isSpinning = true; }
});
let isSpinning = true;

function animate() {
  if (isSpinning) { circle.rotate.y += 0.03; }
  circle.updateRenderGraph();
  requestAnimationFrame(animate);
}
animate();

More resources and examples:

• Zdog official website: Official website link
• Example of Zdog on CodePen: CodePen link

FAQs:

(This can be reorganized into a streamlined answer based on the original FAQ section and used in a more concise language)

• What is Zdog? What can be done? Zdog is a 3D JavaScript engine for the web, used to create and manipulate 3D objects. Can be used to create interactive 3D graphics, animations, and games.
• How to get started with Zdog? Contains Zdog scripts, creates an Illustration instance, adds shapes and renders.
• What shapes are supported? Supports circles, ovals, rectangles, polygons, etc., and can also customize shapes.
• How to create animations? Use requestAnimationFrame() and update the shape properties.
• Can it be used in combination with other libraries? Yes, for example, GreenSock.
• How to deal with user interaction? Use standard JavaScript event handlers.
• Can it be used for game development? Yes, but you need to handle the game logic and physics engine yourself.
• Browser compatibility? Supports modern browsers.
• Commercial use? MIT license, available for commercial projects.
• More resources? Refer to Zdog official website and CodePen, etc.

I hope the above information will be helpful to you!

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