void DashSamples(
NativeArray <RigidTransform> samples,
RoadMarking marking,
out NativeList <RigidTransform> dashSamples,
out NativeList <DashPoint> dashPoints)
{
var sampleDistances = SplineUtility.SplineDistanceArray(samples, Allocator.Temp);
var totalDist = sampleDistances[sampleDistances.Length - 1];
marking.BeginningOffset %= marking.DashLength;
var patternDist = marking.DashLength + marking.SeparationDistance;
var numPatterns = (int)(totalDist / patternDist) + 2;
var patternPoints = new NativeArray <DashPoint>(numPatterns * 2, Allocator.Temp);
var accumulatedDist = marking.BeginningOffset;
for (var i = 0; i < patternPoints.Length;)
{
patternPoints[i++] = new DashPoint
{
Distance = accumulatedDist,
Cap = DashCap.Start
};
accumulatedDist += marking.DashLength;
patternPoints[i++] = new DashPoint
{
Distance = accumulatedDist,
Cap = DashCap.End
};
accumulatedDist += marking.SeparationDistance;
}
dashSamples = new NativeList <RigidTransform>(patternPoints.Length + sampleDistances.Length, Allocator.Temp);
dashPoints = new NativeList <DashPoint>(patternPoints.Length + sampleDistances.Length, Allocator.Temp);
dashSamples.Add(samples[0]);
dashPoints.Add(new DashPoint
{
Distance = 0f,
Cap = DashCap.End
});
for (int i = 1, j = 0; i < samples.Length; i++)
{
var prevSample = samples[i - 1];
var nextSample = samples[i];
var prevDist = sampleDistances[i - 1];
var nextDist = sampleDistances[i];
var betweenDist = nextDist - prevDist;
while (patternPoints[j].Distance < nextDist)
{
var t = (patternPoints[j].Distance - prevDist) / betweenDist;
dashSamples.Add(SplineUtility.LerpTransform(prevSample, nextSample, t));
dashPoints.Add(new DashPoint
{
Distance = i - 1 + t,
Cap = patternPoints[j].Cap
});
j++;
}
dashSamples.Add(nextSample);
dashPoints.Add(new DashPoint
{
Distance = i,
Cap = dashPoints[dashPoints.Length - 1].Cap
});
}
sampleDistances.Dispose();
patternPoints.Dispose();
}