void b2World::DrawParticleSystem(const b2ParticleSystem& system)
{
int32 particleCount = system.GetParticleCount();
if (particleCount)
{
float32 radius = system.GetRadius();
const b2Vec2* positionBuffer = system.GetPositionBuffer();
if (system.m_colorBuffer.data)
{
const b2ParticleColor* colorBuffer = system.GetColorBuffer();
m_debugDraw->DrawParticles(positionBuffer, radius, colorBuffer, particleCount);
}
else
{
m_debugDraw->DrawParticles(positionBuffer, radius, NULL, particleCount);
}
}
}
int32
ConfinementTests::TestLeakCount()
{
for (int32 t = 0; t < NUMBER_OF_STEPS; t++) {
m_world->Step(DELTA_T, 1, 1);
}
int32 bufferIndex = m_particleGroup->GetBufferIndex();
int32 particleCount = m_particleGroup->GetParticleCount();
const b2Vec2 *positionBuffer = m_particleSystem->GetPositionBuffer();
int32 leakCount = 0;
for (int32 i = 0; i < particleCount; i++) {
b2Vec2 p = positionBuffer[bufferIndex + i];
if (std::abs(p.x) > WIDTH || std::abs(p.y) > HEIGHT) {
leakCount++;
}
}
return leakCount;
}