SomeCharts

SomeCharts is a C# cross-platform library for data visualization.

Features

• early version by now
• support only Avalonia by now. Only immediate renderer supported
• cross-platform (tested only on Linux, but should works on win, mac and (maybe) on mobile devices)
• OpenGl backend, planned to add Skia
• glsl shaders, materials, post-processing, 3D mesh with normals and uvs
• fast custom (WIP) text rendering (millions sumbols at 60 fps)
• dynamic data update (customizable)
• levels of detail, occlusion culling
• physical and rendering layers
• very fast (MUCH faster then analogs)
• (0,0) is bottom-left corner. No inverted Y-axis!
• flexible data. Support arrays, collections, functions and constants as data source
• very fast OpenGl textures (much faster then in Skia)
• mesh updates only when necessary
• debug functions by pressing keys
• customizable bloom and fxaa
• themes

Charts that already implemented

• ruler (grid with customizable size, bounds and labels)
• line (any length)

- pie (donut-shape with labels)

- scatter (points with various positions, sizes, colors and shapes)

Custom text rendering

• based on FreeType
• full unicode
• fallback fonts
• custom SDF shader with subpixel antialiasing. Good quality at large scale and ok at small scale
• very fast. Can rebuild mesh of 2.7mb text file in ~5 sec and render at 60 fps

Shortcuts

• [T] - switch teme (light/dark)
• [Y] - switch polygon mode (render as wireframe or points)
• [U] - toggle materials
• [L] - change text quality
• [K] - toggle post processing
• [O], [shift]+[O] - change text thickness
• [W], [A], [S], [D] - movement
• [Alt] - faster mouse scroll and pan

Charts that need to port (written in old version)

• heatmap
• shapefile map
• candlesticks
• bar

Code

full examples can be found there

🔻 deffered renderer (avalonia) is broken! use immediate renderer

// get canvas
AvaloniaGlChartsCanvas canvas = this.FindControl<AvaloniaGlChartsCanvas>("ControlName");

// add grid
canvas.AddRuler(Orientation.horizontal, 1_000_000);
canvas.AddRuler(Orientation.vertical, 1_000_000);

// add line chart
IChartData<float> data = new FuncChartData<float>(j => j * 5, lineLength);
IChartData<indexedColor> colors = new ConstChartData<indexedColor>(theme.accent0_ind);
canvas.AddLineChart(data, colors);