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Small simplification of FlightIntergratorPerf.SetDragCubeDrag #336

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Small simplification of FlightIntergratorPerf.SetDragCubeDrag #336

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7 changes: 3 additions & 4 deletions KSPCommunityFixes/Performance/FlightIntegratorPerf.cs
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Original file line number Diff line number Diff line change
Expand Up @@ -757,13 +757,12 @@ private static void SetDragCubeDrag(DragCubeList dragCubes, Vector3 direction)
double weightedDrag = dragCubes.weightedDrag[i];

double dot = Vector3.Dot(direction, faceDir);
double dotNormalized = (dot + 1.0) * 0.5;
double drag; // = PhysicsGlobals.DragCurveValue(__instance.SurfaceCurves, dotNormalized, machNumber);

if (dotNormalized <= 0.5)
drag = Numerics.Lerp(fiData.dragTail, fiData.dragSurf, dotNormalized * 2.0) * fiData.dragMult;
if (dot <= 0.0)
drag = Numerics.Lerp(fiData.dragSurf, fiData.dragTail, -dot) * fiData.dragMult;
else
drag = Numerics.Lerp(fiData.dragSurf, fiData.dragTip, (dotNormalized - 0.5) * 2.0) * fiData.dragMult;
drag = Numerics.Lerp(fiData.dragSurf, fiData.dragTip, dot) * fiData.dragMult;

double areaOccludedByDrag = areaOccluded * drag;
area += areaOccludedByDrag;
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