Exemplo n.º 1
0
	PxQuat slerp(const PxReal t, const PxQuat& left, const PxQuat& right) 
	{
		const PxReal quatEpsilon = (PxReal(1.0e-8f));

		PxReal cosine = left.dot(right);
		PxReal sign = PxReal(1);
		if (cosine < 0)
		{
			cosine = -cosine;
			sign = PxReal(-1);
		}

		PxReal sine = PxReal(1) - cosine*cosine;

		if(sine>=quatEpsilon*quatEpsilon)	
		{
			sine = PxSqrt(sine);
			const PxReal angle = PxAtan2(sine, cosine);
			const PxReal i_sin_angle = PxReal(1) / sine;

			const PxReal leftw = PxSin(angle*(PxReal(1)-t)) * i_sin_angle;
			const PxReal rightw = PxSin(angle * t) * i_sin_angle * sign;

			return left * leftw + right * rightw;
		}

		return left;
	}
Exemplo n.º 2
0
	void integrateTransform(const PxTransform& curTrans, const PxVec3& linvel, const PxVec3& angvel, PxReal timeStep, PxTransform& result)
	{
		result.p = curTrans.p + linvel * timeStep;

		//from void PxsDynamicsContext::integrateAtomPose(PxsRigidBody* atom, Cm::BitMap &shapeChangedMap) const:
		// Integrate the rotation using closed form quaternion integrator
		PxReal w = angvel.magnitudeSquared();

		if(w != 0.0f)
		{
			w = PxSqrt(w);
			if (w != 0.0f)
			{
				const PxReal v = timeStep * w * 0.5f;
				const PxReal q = PxCos(v);
				const PxReal s = PxSin(v) / w;

				const PxVec3 pqr = angvel * s;
				const PxQuat quatVel(pqr.x, pqr.y, pqr.z, 0);
				PxQuat out;		//need to have temporary, otherwise we may overwrite input if &curTrans == &result.
				out = quatVel * curTrans.q;
				out.x += curTrans.q.x * q;
				out.y += curTrans.q.y * q;
				out.z += curTrans.q.z * q;
				out.w += curTrans.q.w * q;
				result.q = out;
				return;
			}
		}
		//orientation stays the same - convert from quat to matrix:
		result.q = curTrans.q;
	}
Exemplo n.º 3
0
void Camera3D::setFrustum()
{
	PxReal tang = tanf(m_fov * 0.5f);
	PxReal nearHt = m_near * tang;
	PxReal nearWd = nearHt * m_aspect;
	PxReal farHt = m_far * tang;
	PxReal farWd = farHt * m_aspect;

	//Our view of the game is backward which is why we are rotating 180
	PxVec3 viewDirection = Utility::getForward(getTransform()->getTransformedRot() * PxQuat(PxSin(0.5f * ToRadians(180.0f)), 0, 0, PxCos(0.5f * ToRadians(180.0f))));
	PxVec3 rightDirection = Utility::getRight(getTransform()->getTransformedRot() * PxQuat(PxSin(0.5f * ToRadians(180.0f)), 0, 0, PxCos(0.5f * ToRadians(180.0f))));
	PxVec3 upDirection = Utility::getUp(getTransform()->getTransformedRot() * PxQuat(PxSin(0.5f * ToRadians(180.0f)), 0, 0, PxCos(0.5f * ToRadians(180.0f))));

	PxVec3 nearCentre = getTransform()->getTransformedPos() - (viewDirection * m_near);
	PxVec3 farCentre = getTransform()->getTransformedPos() - (viewDirection * m_far);

	PxVec3 ntl = nearCentre + upDirection * nearHt - rightDirection * nearWd;
	PxVec3 ntr = nearCentre + upDirection * nearHt + rightDirection * nearWd;
	PxVec3 nbl = nearCentre - upDirection * nearHt - rightDirection * nearWd;
	PxVec3 nbr = nearCentre - upDirection * nearHt + rightDirection * nearWd;

	PxVec3 ftl = farCentre + upDirection * farHt - rightDirection * farWd;
	PxVec3 ftr = farCentre + upDirection * farHt + rightDirection * farWd;
	PxVec3 fbl = farCentre - upDirection * farHt - rightDirection * farWd;
	PxVec3 fbr = farCentre - upDirection * farHt + rightDirection * farWd;

	m_frustum[0] = PxPlane(ntl, ntr, nbr);
	m_frustum[1] = PxPlane(ftr, ftl, fbl);
	m_frustum[2] = PxPlane(ntr, ntl, ftl);
	m_frustum[3] = PxPlane(nbl, nbr, fbr);
	m_frustum[4] = PxPlane(ntl, nbl, fbl);
	m_frustum[5] = PxPlane(nbr, ntr, fbr);
}
Exemplo n.º 4
0
void PxFlyBall::move()
{
	time++;
	
	if (time % 3000 < 1600) {
		PxVec3 v = pxActor->getLinearVelocity();
		if (fabs(v.x)< 0.0001 && fabs(v.z)<0.0001) {
			GLfloat angle = (rand() % 360) / 360.0*PxPi;
			pxActor->addForce(PxVec3(PxSin(angle) * 50, 0, PxCos(angle) * 50), PxForceMode::eACCELERATION);
		}
		else {
			if (fabs(v.x) < 50 && fabs(v.z) < 50) {
				PxVec3 nmvec = v.getNormalized();
				pxActor->addForce(PxVec3(nmvec.x*50.0, 0, nmvec.z*50.0), PxForceMode::eACCELERATION);
			}
		}
		PxTransform t = pxActor->getGlobalPose();
		if(t.p.y<300)
			pxActor->addForce(PxVec3(0, rand()%200, 0.0), PxForceMode::eACCELERATION);
		if (particleTime == 0) {
			addCPSS();
		}
	}
	//particleTime++;
	//particleTime = particleTime > 5 ? 0 : particleTime;
	time = time > 3000 ? 0 : time;
}
Exemplo n.º 5
0
void ParticleEmitter::computeSiteVelocity(PxVec3& siteVel, const PxVec3& sitePos)
{
	//velocity dir noise
	PxReal noiseXYAngle = randInRange(0.0f, PxTwoPi);
	PxReal noiseZAngle  = randInRange(0.0f, mRandomAngle);

	PxVec3 noiseDirVec = mAxisX * PxCos(noiseXYAngle) + mAxisY * PxSin(noiseXYAngle);
	noiseDirVec.normalize();
	noiseDirVec = mAxisZ * PxCos(noiseZAngle) + noiseDirVec * PxSin(noiseZAngle);

	siteVel = noiseDirVec * mVelocity;

	//add emitter repulsion
	if (mParticleMass > 0.0f)
	{
		mLinMomentum -= siteVel;
		mAngMomentum -= (sitePos - mBodyCenter).cross(siteVel);
	}

	if (mFrameBody)
		siteVel += mBodyLinVel + (mBodyAngVel.cross(sitePos - mBodyCenter)); 
}
Exemplo n.º 6
0
void PxMoveBall::move()
{
	PxVec3 v = pxActor->getLinearVelocity();
	if (fabs(v.x - 0.0)<0.0001 && fabs(v.z-0.0)<0.0001) {
		GLfloat angle = (rand() % 360) / 360.0*PxPi;
		pxActor->addForce(PxVec3(PxSin(angle)*50, 0, PxCos(angle)*50),PxForceMode::eACCELERATION);
	}
	else {
		PxReal speed = v.magnitude();
		if (speed <= maxspeed) {
			PxVec3 nmvec = v.getNormalized();
			pxActor->addForce(PxVec3(nmvec.x*50.0, 0, nmvec.z*50.0),PxForceMode::eACCELERATION);
		}
	}
}
Exemplo n.º 7
0
PxConvexMesh* Vehicle::createWheelMesh(const PxF32 width, const PxF32 radius, PxPhysics& physics, PxCooking& cooking)
{
	PxVec3 points[2 * 16];
	for (PxU32 i = 0; i < 16; i++)
	{
		const PxF32 cosTheta = PxCos(i*PxPi*2.0f / 16.0f);
		const PxF32 sinTheta = PxSin(i*PxPi*2.0f / 16.0f);
		const PxF32 y = radius*cosTheta;
		const PxF32 z = radius*sinTheta;
		points[2 * i + 0] = PxVec3(-width / 2.0f, y, z);
		points[2 * i + 1] = PxVec3(+width / 2.0f, y, z);
	}

	return createConvexMesh(points, 32, physics, cooking);
}
PxConvexMesh* createCylinderConvexMesh(const PxF32 width, const PxF32 radius, const PxU32 numCirclePoints, PxPhysics& physics, PxCooking& cooking)
{
#define  MAX_NUM_VERTS_IN_CIRCLE 16
	PX_ASSERT(numCirclePoints<MAX_NUM_VERTS_IN_CIRCLE);
	PxVec3 verts[2*MAX_NUM_VERTS_IN_CIRCLE];
	PxU32 numVerts=2*numCirclePoints;
	const PxF32 dtheta=2*PxPi/(1.0f*numCirclePoints);
	for(PxU32 i=0;i<MAX_NUM_VERTS_IN_CIRCLE;i++)
	{
		const PxF32 theta=dtheta*i;
		const PxF32 cosTheta=radius*PxCos(theta);
		const PxF32 sinTheta=radius*PxSin(theta);
		verts[2*i+0]=PxVec3(-0.5f*width, cosTheta, sinTheta);
		verts[2*i+1]=PxVec3(+0.5f*width, cosTheta, sinTheta);
	}

	return createConvexMesh(verts,numVerts,physics,cooking);
}