DIvan2000/terminal-oscilloscope
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

Thinner traces — horizontal-only bloom, no vertical bleed

Browse Source 
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
This commit is contained in:
rolandnsharp
2026-04-05 20:21:09 +10:00
parent 9d65aa1f94
commit c9a4e6eeae
1 changed files with 5 additions and 16 deletions
Download Patch File Download Diff File Expand all files Collapse all files

21
src/osc/phosphor.nim
View File

@@ -5,9 +5,8 @@ import illwill, math
const const
PhosphorDecay* = 0.60 # per-frame persistence (P31 green phosphor) PhosphorDecay* = 0.60 # per-frame persistence (P31 green phosphor)
BeamIntensity* = 0.9 # brightness at beam impact BeamIntensity* = 0.7 # brightness at beam impact
BloomInner* = 0.25 # glow spread to adjacent pixels BloomH* = 0.15 # horizontal glow spread
BloomOuter* = 0.08 # faint halo from electron scatter
MinBright* = 0.02 # below this, phosphor is considered off MinBright* = 0.02 # below this, phosphor is considered off
type type
@@ -45,20 +44,10 @@ proc plotDot*(pb: var PhosphorBuffer, fx, fy: float) =
let y = int(fy) let y = int(fy)
if x < 0 or x >= pb.w or y < 0 or y >= pb.pixH: return if x < 0 or x >= pb.w or y < 0 or y >= pb.pixH: return
# Beam impact # Beam impact — no vertical bloom, keeps traces thin
pb.add(x, y, BeamIntensity) pb.add(x, y, BeamIntensity)
# Inner bloom — phosphor scatter pb.add(x - 1, y, BloomH)
pb.add(x, y - 1, BloomInner) pb.add(x + 1, y, BloomH)
pb.add(x, y + 1, BloomInner)
pb.add(x - 1, y, BloomInner * 0.5)
pb.add(x + 1, y, BloomInner * 0.5)
# Outer bloom — electron scatter
pb.add(x, y - 2, BloomOuter)
pb.add(x, y + 2, BloomOuter)
pb.add(x - 1, y - 1, BloomOuter)
pb.add(x + 1, y - 1, BloomOuter)
pb.add(x - 1, y + 1, BloomOuter)
pb.add(x + 1, y + 1, BloomOuter)
proc plotLine*(pb: var PhosphorBuffer, x0, y0, x1, y1: float) = proc plotLine*(pb: var PhosphorBuffer, x0, y0, x1, y1: float) =
## Interpolated line of phosphor dots between two points. ## Interpolated line of phosphor dots between two points.