multibandcolorrenderer.h File Reference

Explicit RGB(A) band-composite raster renderer. More...

#include "render/irasterrenderer.h"

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Classes
class	OpenSWMM::Render::MultiBandColorRenderer
	RGB(A) composite from three (or four) raster bands. More...

Namespaces
namespace	OpenSWMM
namespace	OpenSWMM::Render

Detailed Description

Explicit RGB(A) band-composite raster renderer.

Author

Caleb Buahin caleb.nosp@m..bua.nosp@m.hin@g.nosp@m.mail.nosp@m..com

Date

2026

License\n GPL-3.0-or-later

    Replaces GISRasterLayer's former "three or more bands ⇒ RGB"
    hard-wire with a renderer the user can see and switch away from:
    it names which bands feed the red / green / blue (/ alpha)
    channels, and installing any other IRasterRenderer on a
    multi-band raster puts the layer back on the single-band colour
    path for the chosen render band.

    No per-pixel colour mapping happens here — the warp reads the
    bands as bytes and composites them directly — so colorForValue()
    is unused (returns transparent). No contrast stretch (deferred).