spectrasketch 0.1.3

A Python drawing library for custom shapes, rotation, and interactive editing using OpenCV.

SpectraSketch

SpectraSketch is a flexible Python drawing library built on top of OpenCV. It enables developers, students, and hobbyists to create and manipulate custom geometric shapes programmatically with ease. It also supports undo/redo functionality, shape rotation, filled or outlined styles, and batch drawing operations.

Features

• Draw a variety of shapes - lines, rectangles, circles, triangles, diamonds, polygons, stars, hearts and more
• Rotate shapes with precise angle control
• Undo/Redo support for safe experimentation
• Customisable canvas size and background color
• Batch mode for grouped drawing operations
• Input validation to prevent drawing errors
• Save your canvas as an image (PNG,JPG etc.)
• Simple API that integrates easily into other python projects

Installation

pip install spectrasketch

Quick Example

from spectrasketch import ShapeLab

lab = ShapeLab(width=800, height=600, background_color=(255, 255, 255))
lab.line((50, 50), (200, 50), (255, 0, 0), 2)
lab.rectangle((100, 100), (250, 200), 45, (0, 255, 0), 3)
lab.circle((400, 300), 50, (0, 0, 255), -1)
lab.launch_viewer()

Why SpectraSketch?

• Fast prototyping for Computer Vision projects
• Create educational visualisations for geometry or graphics
• Develop custom image annotation tools
• Easily extend for your own shapes and logic

License

Licensed under the Apache License, Version 2.0