54 lines
1.2 KiB
C++
54 lines
1.2 KiB
C++
// Copyright (C) 2002-2008 Nikolaus Gebhardt
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// This file is part of the "Irrlicht Engine".
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// For conditions of distribution and use, see copyright notice in irrlicht.h
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#include "CParticleRotationAffector.h"
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namespace irr
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{
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namespace scene
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{
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//! constructor
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CParticleRotationAffector::CParticleRotationAffector( const core::vector3df& speed, const core::vector3df& pivotPoint )
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: PivotPoint(pivotPoint), Speed(speed), LastTime(0)
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{
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#ifdef _DEBUG
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setDebugName("CParticleRotationAffector");
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#endif
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}
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//! Affects an array of particles.
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void CParticleRotationAffector::affect(u32 now, SParticle* particlearray, u32 count)
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{
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if( LastTime == 0 )
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{
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LastTime = now;
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return;
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}
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f32 timeDelta = ( now - LastTime ) / 1000.0f;
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LastTime = now;
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if( !Enabled )
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return;
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for(u32 i=0; i<count; ++i)
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{
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if( Speed.X != 0.0f )
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particlearray[i].pos.rotateYZBy( timeDelta * Speed.X, PivotPoint );
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if( Speed.Y != 0.0f )
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particlearray[i].pos.rotateXZBy( timeDelta * Speed.Y, PivotPoint );
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if( Speed.Z != 0.0f )
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particlearray[i].pos.rotateXYBy( timeDelta * Speed.Z, PivotPoint );
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}
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}
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} // end namespace scene
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} // end namespace irr
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