shapedramps

SHAPEDRAMPS is a sync-locked parametric ramp generator for video coordinate synthesis — it draws gradients across the raster rather than processing an incoming picture. It emits four mono-video ramps: h_lin/v_lin are stable identity ramps (red channel = screen u or v, untouched by any knob or CV) for clean raster passthrough into geometry modules like RUTTETRA; h_out/v_out are shaped ramps that morph through four canonical shapes via H Shape / V Shape (0..1): linear (t), triangle (abs(2t-1)), soft-fold (0.5 - 0.5*cos(2pi*t)), and radial (H = distance from center scaled so corners read 1, V = angle around center), blending linearly between adjacent shapes. H/V Phase shift the ramp before shaping; H/V Freq scale the axis variable and fract-wrap it, so freq=2 repeats the shape twice across the canvas (a triangle becomes a two-peak zigzag). It also packs two general-purpose 2-channel video crossfade mixers (out = (1-amount)*A + amount*B) so you can blend ramp shapes without an external V-MIXER, though they accept any mono-video signal. Typical use: feed h_lin/v_lin into a coordinate consumer for an identity raster, then crossfade toward h_out/v_out to warp the geometry; all four ramps and both mixers render every frame so downstream consumers always read fresh textures.

SHAPEDRAMPS is a sync-locked parametric ramp generator for video coordinate synthesis — it draws gradients across the raster rather than processing an incoming picture. It emits four mono-video ramps: h_lin/v_lin are stable identity ramps (red channel = screen u or v, untouched by any knob or CV) for clean raster passthrough into geometry modules like RUTTETRA; h_out/v_out are shaped ramps that morph through four canonical shapes via H Shape / V Shape (0..1): linear (t), triangle (abs(2t-1)), soft-fold (0.5 - 0.5*cos(2pi*t)), and radial (H = distance from center scaled so corners read 1, V = angle around center), blending linearly between adjacent shapes. H/V Phase shift the ramp before shaping; H/V Freq scale the axis variable and fract-wrap it, so freq=2 repeats the shape twice across the canvas (a triangle becomes a two-peak zigzag). It also packs two general-purpose 2-channel video crossfade mixers (out = (1-amount)*A + amount*B) so you can blend ramp shapes without an external V-MIXER, though they accept any mono-video signal. Typical use: feed h_lin/v_lin into a coordinate consumer for an identity raster, then crossfade toward h_out/v_out to warp the geometry; all four ramps and both mixers render every frame so downstream consumers always read fresh textures.

the faceplate

inputs

outputs

params

controls

source

shapedramps.ts on GitHub.