Add MeshPainter.Persistence.cs: auto-save the three canonical paint maps
(albedo, MSO, emission) as PNGs under persistentDataPath on quit/play-stop
and auto-load them as the backend seed on start, so painting survives
sessions. Reuses the existing ReadCanonical/SetupBackend seed round-trip;
no new color-space code.
Add PaintHud.Persistence.cs: auto-save draggable panel positions and the
widget-bound painter values to a small JSON layout file, restored on start
via the painter -> SyncFromPainter -> widgets path. Complete SyncFromPainter
to also cover the spray sliders.
After a successful pipette pick the painter now enables all four paint
channels (albedo, metallic/smoothness, occlusion, emission) and raises a
Picked event. The HUD subscribes and re-syncs every widget (toggles,
sliders, both colour pickers) to the adopted brush values.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
Pipette samples all painted channel values (albedo, metallic, smoothness,
occlusion, emission) at the clicked texel and adopts them into the brush
with every opacity forced to 1, instead of painting. The screen raycast is
extracted into a shared TryRaycastPaintMesh helper used by painting, preview
and the pipette. A pipette toggle is added to the HUD panel prefab and wired
in PaintHud.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
Spray brush mode: bakes a procedural scattered-dot mask per stamp (random
position, size, alpha within the brush disc) and paints it through the
existing single-stamp pipeline; dot centers clamped to (0.5 - dotR) so the
spray footprint matches the solid brush radius.
Paint interval: float on MeshPainter; 0 keeps the continuous interpolated
stroke, >0 emits a single timed dab every x.xx seconds.
Color picker alpha: horizontal alpha bar on both HSV pickers, runtime-built
in Rebind (no prefab re-bake), passed through to brushColor.a / emissionColor.a.
Metallic/smoothness + occlusion paint opacity: new opacity fields applied in
both CPU and GPU backends (GPU MSO draw split into MS and occlusion sub-stamps
for independent opacity), with cloned alpha sliders wired into the HUD.
Also includes the prefab layout tweaks and scene adjustments.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
Each channel panel (Albedo, Metallic+Smoothness, Occlusion, Emission)
gets a CanvasGroup whose alpha follows its toggle: 1.0 when enabled,
0.5 when disabled. Ensured at runtime in WirePanel (no prefab re-bake),
so both the prefab and code-gen paths behave identically. Panel_BrushSize
has no toggle and is left untouched.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
Drag a panel from anywhere on its surface (header, padding, labels,
background) instead of only the header. Dragging is cancelled when the
press starts on an interactable (Selectable toggle/slider or the color
picker's UiPointerSurface), so widgets stay fully operable. Clamping is
now anchor/pivot-agnostic, computed from the panel's real corners, so
panels anchored bottom-center stay reachable in every screen corner.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
Split the single HUD panel into four independent per-channel sub-panels
plus a global brush-size panel, each a standalone RectTransform with its
own header (drag-handle ready). PaintHud now binds to a baked layout
prefab via recursive name lookup instead of building everything in code,
with a code-gen fallback. HsvColorPicker gains Rebind() to re-apply the
procedural gradient sprites and drag relays that a prefab cannot serialize.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
Add a code-driven HUD that appears in paint mode and binds live to the
active MeshPainter: four channel toggles, HSV pickers for albedo and
emission, sliders for metallic/smoothness/occlusion, emission intensity
and brush size. The HUD self-assembles its own overlay canvas and event
system at runtime.
Add a ModeChanged event to GameModeManager so the HUD can follow the
active mode, and guard MeshPainter against painting through the UI.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
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