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implot/TODO.md
Evan Pezent 3e96fd7c02
improve indexing, line rendering performance by 45% (#270) 
* add IndexData and Indexers

* simplify transformers

* 30% improvement

* moving around

* add TODO.md

* fix bar plot aliasing

* finishup indexing

* remove debug bools
2021-07-30 20:27:02 -07:00

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The list below represents a combination of high-priority work, nice-to-have features, and random ideas. We make no guarantees that all of this work will be completed or even started. If you see something that you need or would like to have, let us know, or better yet consider submitting a PR for the feature.

Plots

  • remove axis-related args from signature of BeginPlot and add SetupNextAxis API
    • add a few overloads of BeginPlot that bypass SetupNextAxis for common scenarios
    • make current BeginPlot a wrapper to this API

Axes

  • add support for multiple x-axes and don't limit count to 3
    • will require SetupNextAxis API
  • make axis side configurable (top/left, right/bottom) via new flag ImPlotAxisFlags_Opposite
  • add support for setting tick label strings via callback
  • add flag to remove weekends on Time axis

Plot Items

  • add ImPlotLineFlags, ImPlotBarsFlags, etc. for each plot type
  • add PlotBarGroups wrapper that makes rendering groups of bars easier
  • add non-zero references for PlotBars etc.

Styling

  • support gradient and/or colormap sampled fills (e.g. ImPlotFillStyle_)
  • add hover/active color for plot

Legend

  • change SetLegendLocation API to be more consistent, i.e. SetNextLegendLocation
  • add legend scroll
  • improve legend icons (e.g. adopt markers, gradients, etc)
  • ImPlotLegendFlags

Tools / Misc.

  • add IsPlotChanging to detect change in limits
  • add ability to extend plot/axis context menus
  • add LTTB downsampling for lines

Optimizations

  • find faster way to buffer data into ImDrawList (very slow)
  • reduce number of calls to PushClipRect
  • explore SIMD operations for high density plot items