canvg/canvg
Canvg
canvg is a JavaScript graphics library and rendering engine designed to parse SVG vector data and draw the resulting graphics onto HTML5 canvas elements. It functions as a pipeline that transforms structured vector markup into pixel-based output for use in web browsers.
The library provides a framework for web vector graphics animation, executing rendering cycles to maintain consistent visual motion. It also enables interactive vector graphics by mapping user input, such as mouse clicks and touch events, to specific shapes within the rendered canvas.
The engine handles vector-to-pixel transformation and dynamic resizing to fit content into specified dimensions while preserving aspect ratios. Its capabilities include a stateful rendering pipeline for managing transformations and clipping paths, as well as offscreen rendering and asynchronous resource loading.
Features
- SVG and Canvas Converters - Translates SVG vector graphics data into HTML5 canvas object models for rendering.
- Vector-to-Pixel Rasterization - Parses structured SVG markup and converts mathematical paths into pixel commands for the HTML5 canvas API.
- Vector Rendering Pipelines - Provides a rendering pipeline that manages a stack of transformations and clipping paths for nested vector elements.
- Vector Graphics Renderers - Implements a rendering pipeline that transforms structured vector markup into pixel-based output for browser interactions.
- Vector Graphics Libraries - Provides a JavaScript library for managing vector scaling, hit detection, and offscreen rendering.
- Vector Animation Libraries - Renders vector data onto a canvas in a browser to create smooth motion and dynamic visual effects.
- Touch-to-Canvas Coordinate Mapping - Translates raw screen-space mouse and touch events into vector coordinates to enable interaction with specific shapes.
- Interactive Vector Mapping - Maps mouse clicks and touch events to specific shapes within the rendered vector graphic.
- Canvas-Based Animation Frameworks - Executes rendering cycles of vector files on a canvas to maintain consistent visual motion.
- Vector Element Animations - Executes rendering cycles that maintain consistent visual motion for animated vector graphics on a canvas.
- Offscreen Canvas Rendering - Uses offscreen canvas buffers to perform complex drawing operations without impacting interface responsiveness.
- Aspect Ratio Preserving Resizing - Resizes vector content to fit within specified canvas dimensions while maintaining the original aspect ratio.
- 图表绘制/图形库(Graphics) - Listed in the “图表绘制/图形库(Graphics)” section of the Awesome Frontend awesome list.
