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Fix #408 by being more precise in some places

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IEEE floating point numbers are fun ™️
This commit is contained in:
stefnotch
2021-04-10 09:13:19 +02:00
parent 3e080c44c6
commit 5b1c5824c8
1 changed files with 5 additions and 6 deletions
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11
Source/Engine/Level/Actors/SplineModel.cpp
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@@ -138,11 +138,10 @@ void SplineModel::OnSplineUpdated()
Vector3 tmp = corners[i] * _preTransform.Scale;
double rotation[4] = { (double)_preTransform.Orientation.X, (double)_preTransform.Orientation.Y, (double)_preTransform.Orientation.Z, (double)_preTransform.Orientation.W };
const double length = sqrt(rotation[0] * rotation[0] + rotation[1] * rotation[1] + rotation[2] * rotation[2] + rotation[3] * rotation[3]);
const double inv = 1.0 / length;
rotation[0] *= inv;
rotation[1] *= inv;
rotation[2] *= inv;
rotation[3] *= inv;
rotation[0] /= length;
rotation[1] /= length;
rotation[2] /= length;
rotation[3] /= length;
double pos[3] = { (double)tmp.X, (double)tmp.Y, (double)tmp.Z };
const double x = rotation[0] + rotation[0];
const double y = rotation[1] + rotation[1];
@@ -251,7 +250,7 @@ void SplineModel::UpdateDeformationBuffer()
AnimationUtils::GetTangent(end.Value, end.TangentIn, length, rightTangent);
for (int32 chunk = 0; chunk < chunksPerSegment; chunk++)
{
const float alpha = (float)chunk * chunksPerSegmentInv;
const float alpha = (chunk == chunksPerSegment - 1)? 1.0f : ((float)chunk * chunksPerSegmentInv);
// Evaluate transformation at the curve
AnimationUtils::Bezier(start.Value, leftTangent, rightTangent, end.Value, alpha, transform);