src/thirdparty/particles/ParticleDLL/actions.cpp File Reference

#include "actions.h"
#include "ParticleState.h"
#include <algorithm>
#include <sstream>
#include <typeinfo>

Include dependency graph for actions.cpp:

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Functions
static void	NewBasis (const pVec &u, const pVec &v, pVec &s1, pVec &s2)
static void	Restore (pVec &vel, const pVec &posB, const pVec &pos, const float t, const float dtSqr, const float ttInv6dt, const float tttInv3dtSqr)

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Function Documentation

static void NewBasis	(	const pVec &	u,
		const pVec &	v,
		pVec &	s1,
		pVec &	s2
	)			[inline, static]

Definition at line 19 of file actions.cpp.

References pVec::x(), pVec::y(), and pVec::z().

Referenced by PABounce::Exec(), and PAAvoid::Exec().

{
    pVec w = Cross(u, v);

    float det = 1.0f / (w.z()*u.x()*v.y() - w.z()*u.y()*v.x() - u.z()*w.x()*v.y() - u.x()*v.z()*w.y() + v.z()*w.x()*u.y() + u.z()*v.x()*w.y());

    s1 = pVec((v.y()*w.z() - v.z()*w.y()), (v.z()*w.x() - v.x()*w.z()), (v.x()*w.y() - v.y()*w.x()));
    s1 *= det;
    s2 = pVec((u.y()*w.z() - u.z()*w.y()), (u.z()*w.x() - u.x()*w.z()), (u.x()*w.y() - u.y()*w.x()));
    s2 *= -det;
}

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static void Restore	(	pVec &	vel,
		const pVec &	posB,
		const pVec &	pos,
		const float	t,
		const float	dtSqr,
		const float	ttInv6dt,
		const float	tttInv3dtSqr
	)			[inline, static]

Definition at line 1120 of file actions.cpp.

{
    pVec b = (vel*-0.6667f*t + posB - pos) * ttInv6dt;
    pVec a = (vel*t - posB - posB + pos + pos) * tttInv3dtSqr;
    vel += a + b;
}

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