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Face curb-return skirts toward the hub camera

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Overhead views were backface-culling property-facing skirt normals into
a thin silhouette; flip curb riser and outer gray skirts toward the hub.

Co-authored-by: 西风逍遥游 <sunxfancy@gmail.com>
This commit is contained in:
Cursor Agentand西风逍遥游 committed 2026-09-18 13:51:06 +00:00
1 parent 60a6deaf20
commit e812657827
2 files changed
+7 -5
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src/modules/procgen/road/RoadBake.cpp
+5 -3
View File
@@ -583,13 +583,15 @@ Result<void> bakeJunction(MeshBuild& mesh, const RoadNetwork& network, const Roa
appendOrientedQuad(mesh, V3{b0.x, walkY, b0.z}, V3{c0.x, walkY, c0.z}, V3{c1.x, walkY, c1.z},
V3{b1.x, walkY, b1.z}, upN, 0.f, 1.f, 0.f, 1.f, RoadMaterial::Sidewalk);
// Curb face toward asphalt; curb riser down onto sidewalk; outer gray skirt.
// Curb face toward asphalt; curb riser onto sidewalk; outer gray skirt.
// Skirt normal faces the hub so the overhead camera sees the front face
// (property-facing normals were backface-culled to a thin silhouette).
appendOrientedQuad(mesh, V3{a0.x, y, a0.z}, V3{a1.x, y, a1.z}, V3{a1.x, curbTop, a1.z},
V3{a0.x, curbTop, a0.z}, outToRoad, 0.f, 1.f, 0.f, 1.f, RoadMaterial::Curb);
appendOrientedQuad(mesh, V3{b0.x, walkY, b0.z}, V3{b1.x, walkY, b1.z}, V3{b1.x, curbTop, b1.z},
V3{b0.x, curbTop, b0.z}, inToCorner, 0.f, 1.f, 0.f, 1.f, RoadMaterial::Curb);
V3{b0.x, curbTop, b0.z}, outToRoad, 0.f, 1.f, 0.f, 1.f, RoadMaterial::Curb);
appendOrientedQuad(mesh, V3{c0.x, y, c0.z}, V3{c1.x, y, c1.z}, V3{c1.x, walkY, c1.z},
V3{c0.x, walkY, c0.z}, inToCorner, 0.f, 1.f, 0.f, 1.f,
V3{c0.x, walkY, c0.z}, outToRoad, 0.f, 1.f, 0.f, 1.f,
RoadMaterial::Sidewalk);
}
}
test/procgen_road.cpp
+2 -2
View File
@@ -344,8 +344,8 @@ TEST_CASE("procgen.road.scenes.crossJunctionCornerSidewalks") {
if (r < 0.55f) ++tipHits;
const float nx = sw->getNormalX(i);
const float nz = sw->getNormalZ(i);
// Outer skirt faces toward the property corner (±jr,±jr).
if (r > 0.7f && r < 1.4f && (nx * dx + nz * dz) > 0.3f) ++outerSkirtHits;
// Outer skirt faces the hub (away from property corner) so overhead views see it.
if (r > 0.7f && r < 1.4f && (nx * dx + nz * dz) < -0.3f) ++outerSkirtHits;
}
CHECK_GT(arcHits, 16);
CHECK_EQ(tipHits, 0);