vn_beam_violet

# venue_glow The additive glow behind Sengoku Trance's light show — every laser beam, light shaft, strobe wash and haze card in the venue is a mesh wearing a material built on this shader. It is self-shading and blends additively, so it adds light to the frame and never subtracts any: a beam can wash a note out but it cannot hide one, which is the property the note highway is authored against. The surface is read as a beam lying along its own **+Y**. `uv.x` runs across the width and drives a soft skirt plus a hot core; `uv.y` runs along the length and fades the beam in over `head` and out over `tail`. `view_fade` thins a beam as it swings edge-on to the camera. ## Properties | name | meaning | |---|---| | `glow_color` | the beam's colour — one of `ST.PALETTE`'s neons | | `intensity` | overall brightness; the light rig drives this on the beat | | `falloff` | how fast the skirt falls off across the width (higher = tighter) | | `core` | strength of the hot centre line inside the skirt | | `head` | fraction of the length the beam fades in over | | `tail` | fraction of the length the beam fades out over | | `view_fade` | how much an edge-on beam thins, 0 = not at all |