2024-12-21 10:04:04 +08:00
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#include "StdAFx.h"
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#include "EtPrimitive.h"
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#ifdef _DEBUG
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#define new new(_NORMAL_BLOCK,__FILE__,__LINE__)
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#endif
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void SOBB::Init( SAABox &Box, EtMatrix &WorldMat )
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{
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float fLengthX = EtVec3Length( ( EtVector3 * )&( WorldMat._11 ) );
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float fLengthY = EtVec3Length( ( EtVector3 * )&( WorldMat._21 ) );
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float fLengthZ = EtVec3Length( ( EtVector3 * )&( WorldMat._31 ) );
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Extent[ 0 ] = fabs( ( Box.Max.x - Box.Min.x ) * 0.5f ) * fLengthX;
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Extent[ 1 ] = fabs( ( Box.Max.y - Box.Min.y ) * 0.5f ) * fLengthY;
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Extent[ 2 ] = fabs( ( Box.Max.z - Box.Min.z ) * 0.5f ) * fLengthZ;
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Center = ( Box.Max + Box.Min ) * 0.5f;
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EtVec3TransformCoord(&Center, &Center, &WorldMat );
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Axis[ 0 ] = *( EtVector3 * )&( WorldMat._11 ) / fLengthX;
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Axis[ 1 ] = *( EtVector3 * )&( WorldMat._21 ) / fLengthY;
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Axis[ 2 ] = *( EtVector3 * )&( WorldMat._31 ) / fLengthZ;
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CalcVertices();
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}
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