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 Features
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2. My simple Euler intergrator.
///////////////////////////////////////////////////////////////////////////////
// Function: Integrate
// Purpose: Calculate new Positions and Velocities given a deltatime
// Arguments: DeltaTime that has passed since last iteration
// Notes: This integrator uses Euler's method
///////////////////////////////////////////////////////////////////////////////
void CPhysEnv::Integrate( float DeltaTime)
{
/// Local Variables //////////////////////////////////////////////////////////
int loop;
tParticle *source,*target;
///////////////////////////////////////////////////////////////////////////////
source = m_CurrentSys; // CURRENT STATE OF PARTICLE
target = m_TargetSys; // WHERE I AM GOING TO STORE
THE NEW STATE
for (loop = 0; loop < m_ParticleCnt; loop++)
{
// DETERMINE THE NEW VELOCITY FOR THE PARTICLE
target->v.x = source->v.x + (DeltaTime *
source->f.x * source->oneOverM);
target->v.y = source->v.y + (DeltaTime *
source->f.y * source->oneOverM);
target->v.z = source->v.z + (DeltaTime *
source->f.z * source->oneOverM);
//
SET THE NEW POSITION
target->pos.x = source->pos.x + (DeltaTime
* source->v.x);
target->pos.y = source->pos.y + (DeltaTime
* source->v.y);
target->pos.z = source->pos.z + (DeltaTime
* source->v.z);
source++;
target++;
}
}
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