fogleman/gg
Gg
gg es una biblioteca de gráficos 2D y motor de gráficos vectoriales en Go diseñado para la generación de imágenes programática. Proporciona una API de renderizado de lienzo para crear formas 2D, trazados y activos visuales personalizados, que pueden exportarse como archivos PNG y JPG.
El kit de herramientas permite la construcción de geometrías complejas utilizando curvas de Bezier y trazados personalizados. Admite una variedad de operaciones de renderizado, incluyendo el relleno y trazado de contornos, la aplicación de degradados lineales y radiales, y la utilización de patrones de superficie.
La biblioteca cubre una amplia gama de capacidades, incluyendo el renderizado de texto con ajuste de palabras y medición de dimensiones, transformaciones de coordenadas como rotación y escalado, y el uso de recorte de máscara alfa para restringir áreas de dibujo. También gestiona el estado de los gráficos a través de un sistema basado en pila para admitir transformaciones y estilos anidados.
Features
- 2D Vector Graphics Libraries - Provides a comprehensive API for drawing shapes, paths, and text in a two-dimensional vector space using Go.
- Canvas Rendering - Provides a raster-based canvas rendering engine for programmatic image generation in Go.
- Canvas and Paint APIs - Offers programmatic interfaces for defining drawing styles and executing rendering commands on a surface.
- Canvas Coordinate Transformations - Implements canvas coordinate modifications including translation, scaling, rotation, and skewing.
- Programmatic Image Toolkits - Provides a set of tools for creating PNG and JPG files through 2D drawing and font rendering.
- Go Graphics Libraries - Provides a specialized toolkit for rendering 2D shapes and text using a coordinate-based canvas in Go.
- Shape Drawing - Renders geometric primitives including circles, rectangles, ellipses, polygons, and arcs.
- Path Geometry Construction - Enables the construction of complex geometry using cubic and quadratic Bezier curves and custom paths.
- Composite Path Construction - Constructs complex vector paths by combining linear segments and Bezier curves.
- Fill and Stroke Styles - Applies colors, gradients, and patterns to define the interior and boundaries of vector shapes.
- Transformation Stacks - Implements a transformation stack to save and restore nested matrix transformations.
- Vector Rasterizers - Converts mathematical vector definitions, including Bezier curves and paths, into pixel-based raster images.
- Text Rendering - Renders text strings onto a canvas with support for fonts, alignment, and word wrapping.
- Raster Image Renderers - Implements a rendering engine to produce high-quality PNG and JPG files with custom layouts and gradients.
- Graphics State Management - Manages graphics state by saving and restoring stacks of style and transformation settings.
- Raster Image Exporters - Exports final visual output to disk or writers in PNG and JPG formats.
- Canvas Image Positioning - Provides logic for aligning and positioning external images on the rendering canvas.
- Dynamic Image Renderers - Enables programmatic generation of images like banners and charts based on runtime functions.
- Gradient Renderers - Renders smooth linear and radial color transitions across graphical elements.
- Image Blitting - Allows placing external image data onto the drawing canvas by mapping source pixels to target coordinates.
- Clipping Regions - Defines path-based clipping regions to restrict the visible rendering area of the canvas.
- Text Dimension Measurement - Calculates the exact pixel width and height of text segments for custom layout rendering.
- Clipping Path Applications - Provides tools for restricting rendering areas using defined vector paths or alpha masks.
- Surface Patterns - Supports filling shapes and strokes using repeating surface patterns and gradients.
- Image Processing - Pure Go 2D rendering library.
