Transparent lines vs. Removed lines

[fecaltransplant]

I didn't see if this remained anywhere else in the discussion.

Making the lines transparent for the waterfall plots does work in removing the lines, but the performance cost remains.

Before with lines:

Lines transparent:

Lines commented out in PlotSurfaceEx():

I think a flag (like you mentioned) might be a nice remedy so that I don't need to modify implot3d_items.cpp. In case the images aren't clear, removing the lines took me from ~11fps to ~25fps using the same data.

[brenocq]

Ooops that's unexpected, thanks for pointing it out! I'll take a look into it :)

[brenocq]

Hi @fecaltransplant! I'm very sorry for taking this long to work on this. That said, I added 3 flags for the SurfacePlot:

• ImPlot3DSurfaceFlags_NoLines
• ImPlot3DSurfaceFlags_NoFill
• ImPlot3DSurfaceFlags_NoMarkers

I've added them to the demo and tested if the FPS improved when they are enabled

Peek.2025-05-24.08-05.mp4

I'll do the same for the PlotQuad/PlotTriangle/PlotMesh. I'm working on this in the perf/plot-without-lines branch, I'm planning to have it merge to main in the next few hours.

[brenocq]

Updated mesh demo

Peek.2025-05-24.08-47.mp4

Updated triangle demo

Peek.2025-05-24.08-42.mp4

Updated quad demo

Peek.2025-05-24.08-43.mp4

[brenocq]

The PR #88 was just merged with these changes, thank you for the feedback @fecaltransplant!

In the future, I'm also planning to work on #67, which should also help a bit with the performance when plotting lines.