void RandomSpawn::updateParticles()
{
mCinderDS->update();
mChanDepth = mCinderDS->getDepthFrame();
//Channel16u::Iter cIter = mChanDepth.getIter();
for (int sp = 0; sp < S_SPAWN_COUNT; ++sp)
{
if (mPointsParticles.size() < S_MAX_COUNT)
{
int cX = randInt(0, mDepthDims.x);
int cY = randInt(0, mDepthDims.y);
float cZ = (float)mChanDepth.getValue(ivec2(cX, cY));
if (cZ > S_MIN_Z&&cZ < S_MAX_Z)
{
vec3 cWorld = mCinderDS->getDepthSpacePoint(static_cast<float>(mDepthDims.x-cX),
static_cast<float>(cY),
static_cast<float>(cZ));
// pos, acc size life
vec3 cAcc(randFloat(-5.f, 5.f), randFloat(0.5f, 3.5f), randFloat(-5.f, 5.f));
float cSize = randFloat(S_POINT_SIZE*0.25f, S_POINT_SIZE);
int cLife = randInt(60, 120);
ColorA cColor = ColorA(randFloat(), 0.1f, randFloat(), 1.0f);
mPointsParticles.push_back(CloudParticle(cWorld, cSize, cLife, cColor));
}
}
}
//now update particles
for (auto pit = mPointsParticles.begin(); pit != mPointsParticles.end();)
{
if (pit->PAge == 0)
pit = mPointsParticles.erase(pit);
else
{
pit->step(mPerlin);
++pit;
}
}
mDataInstance_P->bufferData(mPointsParticles.size()*sizeof(CloudParticle), mPointsParticles.data(), GL_DYNAMIC_DRAW);
}
Channel16u mapDepthFrameToColor( const Channel16u& depth, ICoordinateMapper* mapper )
{
size_t numPoints = depth.getWidth() * depth.getHeight();
Channel16u channel( depth.getWidth(), depth.getHeight() );
vector<ColorSpacePoint> colorSpacePoints( numPoints );
long hr = mapper->MapDepthFrameToColorSpace( (UINT)numPoints, depth.getData(), numPoints, &colorSpacePoints[ 0 ] );
if ( SUCCEEDED( hr ) ) {
Channel16u::Iter iter = channel.getIter();
size_t i = 0;
while ( iter.line() ) {
while ( iter.pixel() ) {
Vec2i pos = Vec2i( toVec2f( colorSpacePoints[ i ] ) );
uint16_t v = 0x0000;
if ( pos.x >= 0 && pos.x < depth.getWidth() && pos.y >= 0 && pos.y < depth.getHeight() ) {
v = depth.getValue( pos );
}
iter.v() = v;
}
}
}
return channel;
}
