softvisor/Gas-Tank-AR-App
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Add tank catalog with USDZ models and tank selection

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Introduce TankDefinition/TankCatalog loaded from Tanks.json, bundle the
Drachengas USDZ tank models, add tank selection and preview views, and
update the AR experience, editor and project views to use the catalog.
Includes tests for catalog loading and model selection.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
This commit is contained in:
Dennis Nemec
2026-09-26 19:12:39 +02:00
parent 992bb32025
commit b8536d4182
63 changed files with 2317 additions and 188 deletions
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14
GasTankAR/Views/TankAR/TankShaders.metal
View File

@ -27,16 +27,13 @@ void tankDepthFadeSurface(realitykit::surface_parameters params)
auto constants = params.material_constants();
float2 uv = params.geometry().uv0();
// Modelle aus USDZ nutzen eine gespiegelte Y-UV.
uv.y = 1.0 - uv.y;
// Basisfarbe = Tint * Textur.
// Originale USDZ-Farbe und Textur beibehalten.
half3 tint = (half3)constants.base_color_tint();
half3 color = (half3)tex.base_color().sample(textureSampler, uv).rgb;
color *= tint;
params.surface().set_base_color(color);
params.surface().set_base_color(color * tint);
// Roughness / Metallic durchreichen (wie PhysicallyBasedMaterial).
half roughness = tex.roughness().sample(textureSampler, uv).r * constants.roughness_scale();
params.surface().set_roughness(roughness);
@ -50,6 +47,13 @@ void tankDepthFadeSurface(realitykit::surface_parameters params)
float band = max(custom.y, 1e-3);
float belowAlpha = custom.z;
// Bei maximaler Transparenz wird alles unterhalb der Bodenhöhe
// vollständig ausgeblendet – nicht nur abgeschwächt.
if (belowAlpha <= 0.001 && worldPosition.y < groundY) {
params.surface().set_opacity(half(0.0));
return;
}
float t = clamp((groundY - worldPosition.y) / band, 0.0, 1.0);
float alpha = mix(1.0, belowAlpha, t);
params.surface().set_opacity(half(alpha));