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steveruizok/perfect-freehand

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5,606 stele·210 fork-uri·HTML·MIT·3 vizualizăriperfectfreehand.com↗

Perfect Freehand

perfect-freehand este un utilitar matematic pentru generarea de contururi vectoriale netede și organice din date de puncte. Funcționează ca un generator de linii sensibil la presiune care convertește secvențe de coordonate în contururi poligonale pentru a simula linii desenate manual cu lățime variabilă.

Biblioteca este specializată în randarea digitală a cernelii și vizualizarea input-ului de stylus, mapând datele de precizie de la tabletele de desen sau viteza de mișcare la lățimile vizuale ale liniei. Oferă primitivele geometrice necesare pentru a crea implementări de pensule personalizate care simulează aspectul cernelii reale sau al markerelor pe o pânză digitală.

Sistemul gestionează netezirea liniilor desenate manual și generarea de contururi de cale SVG prin transformarea punctelor de intrare brute în forme bidimensionale potrivite pentru umplere sau trasare.

Features

  • Digital Ink Rendering - Converts sequences of raw input points into polished vector outlines for digital ink rendering.
  • Pressure Simulation - Calculates realistic line thickness based on point distance or stylus pressure values.
  • Polygon Outline Generation - Constructs closed shapes by calculating perpendicular offset points to create filled vector strokes.
  • Path Smoothing - Uses a mathematical approach to refine and smooth the control points of freehand vector curves.
  • Point-to-Polygon Transformation - Transforms linear sequences of coordinates into two-dimensional shapes suitable for filling or stroking.
  • Spline Interpolators - Implements Catmull-Rom spline interpolation to smooth raw input points into continuous organic curves.
  • Velocity-Based Stroke Weighting - Calculates variable line thickness by measuring distances between sequential points to simulate pen speed and pressure.
  • Pressure-Sensitive Stroke Generation - Converts sequences of points into polygon outlines to simulate variable-width freehand lines.
  • Stroke Outline Generation - Generates the geometric filled area of a stroke that expands and contracts based on pressure.
  • Pressure-Sensitive Drawing - Creates smooth hand-drawn lines that vary in thickness based on pen pressure or movement speed.
  • Stylus Input Visualization - Maps precision drawing tablet data to visual stroke widths for a natural writing experience.
  • Custom Brush Definitions - Provides the geometric primitives necessary to define custom digital brush behaviors and stroke styles.
  • SVG Path Outline Generation - Creates the outer boundary polygons of brush strokes for rendering in vector graphics.

Istoric stele

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Întrebări frecvente

Ce face steveruizok/perfect-freehand?

perfect-freehand este un utilitar matematic pentru generarea de contururi vectoriale netede și organice din date de puncte. Funcționează ca un generator de linii sensibil la presiune care convertește secvențe de coordonate în contururi poligonale pentru a simula linii desenate manual cu lățime variabilă.

Care sunt principalele funcționalități ale steveruizok/perfect-freehand?

Principalele funcționalități ale steveruizok/perfect-freehand sunt: Digital Ink Rendering, Pressure Simulation, Polygon Outline Generation, Path Smoothing, Point-to-Polygon Transformation, Spline Interpolators, Velocity-Based Stroke Weighting, Pressure-Sensitive Stroke Generation.

Care sunt câteva alternative open-source pentru steveruizok/perfect-freehand?

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