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Move MinkowskiDifference to a separate file
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namespace GJKEPADemo; | ||
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public struct MinkowskiDifference | ||
{ | ||
public ISupportMappable SupportA, SupportB; | ||
public JMatrix OrientationA, OrientationB; | ||
public JVector PositionA, PositionB; | ||
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private void SupportMapTransformedA(in JVector direction, out JVector result) | ||
{ | ||
JVector.TransposedTransform(direction, OrientationA, out JVector tmp); | ||
SupportA.SupportMapping(tmp, out result); | ||
JVector.Transform(result, OrientationA, out result); | ||
JVector.Add(result, PositionA, out result); | ||
} | ||
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private void SupportMapTransformedB(in JVector direction, out JVector result) | ||
{ | ||
JVector.TransposedTransform(direction, OrientationB, out JVector tmp); | ||
SupportB.SupportMapping(tmp, out result); | ||
JVector.Transform(result, OrientationB, out result); | ||
JVector.Add(result, PositionB, out result); | ||
} | ||
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public void Support(in JVector direction, out JVector vA, out JVector vB, out JVector v) | ||
{ | ||
// Calculates the support function S_{A-B}(d) = S_{A}(d) - S_{B}(-d), | ||
// where 'd' represents the direction. | ||
SupportMapTransformedA(direction, out vA); | ||
SupportMapTransformedB(-direction, out vB); | ||
JVector.Subtract(vA, vB, out v); | ||
} | ||
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public void SupportMapping(in JVector direction, out JVector result) | ||
{ | ||
this.Support(direction, out _, out _, out result); | ||
} | ||
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public void SupportCenter(out JVector center) | ||
{ | ||
JVector.Subtract(PositionA, PositionB, out center); | ||
} | ||
} |