Description
When rendering with a kMaplySubdivEpsilon, this polygon (as one of several examples, though I can't quite pin down what's unique about these few out of hundreds of similar ones that work fine), looks fine at nadir, but off-center begins to draw through the globe and becomes visible from the other side. The CW winding seems correct, etc. It also works fine without kMaplySubdivEpsilon.
It is added like
let polygonStyle: [String: Any] = [
kMaplyColor: sigmet.color.withAlphaComponent(0.14),
kMaplyEnable: isValid,
kMaplyFilled: true,
kMaplySelectable: true,
kMaplyDrawPriority: kMaplyMaxDrawPriorityDefault - 20_000,
kMaplyRepresentation: sigmet.id as Any,
kMaplySubdivType: kMaplySubdivGreatCirclePrecise,
kMaplySubdivEpsilon: 0.001,
]
let polygon = MaplyVectorObject(
areal: bufferPointer.baseAddress!,
numCoords: Int32(half.count),
attributes: polygonStyle
)
addVectors([polygon], desc: polygonStyle)
[0] MaplyCoordinate
x Float 0.20333086
y Float -0.564910769
[1] MaplyCoordinate
x Float 0.152419597
y Float -0.746424973
[2] MaplyCoordinate
x Float 0.335399926
y Float -0.852017402
[3] MaplyCoordinate
x Float 0.266162723
y Float -1.31161499
[4] MaplyCoordinate
x Float -0.174532935
y Float -1.28922236
[5] MaplyCoordinate
x Float -0.174532935
y Float -0.875579357
[6] MaplyCoordinate
x Float -0.00668461109
y Float -0.87732464
[7] MaplyCoordinate
x Float -0.0453785583
y Float -0.586430609
[8] MaplyCoordinate
x Float 0.20333086
y Float -0.564910769
Activity