void HodginDidItApp::processDepth()
{
mPoints.clear();
Surface::Iter sit = mSurfDepth.getIter(Area(0,0,mDepthW,mDepthH));
while(sit.line())
{
while(sit.pixel())
{
float cDepth = (float)mDepthBuffer[sit.y()*mDepthW+sit.x()];
sit.r() = 0;
sit.g() = 0;
sit.b() = 0;
sit.a() = 0;
if(cDepth<32000)
{
float cScaled = cDepth/1000.0f;
if(cDepth<300)
{
uint8_t v = (uint8_t)lmap<float>(cDepth,0,300,0,255);
sit.r() = v;
sit.a() = v;
}
if(sit.x()%2==0&&sit.y()%2==0)
mPoints.push_back(niDepthToWorld(Vec3f(sit.x(),sit.y(),1.0f*cScaled)));
}
}
}
}
void FrownLogoParticlesApp::setup()
{
mKeyPressed = false;
// Lets load a font from the the installed fonts of the OS
// and set its size to 90
mFont = Font("Arial",90 );
//Clear the layout to black
mLayout.clear(Color::black() );
//Set the text color of the layout
mLayout.setColor(Color(1,1,1));
//Set the font of the layout
mLayout.setFont(mFont);
//Add the following line to the layout
mLayout.addLine("FROWN");
//Render the layout into a cinder Surface
mSurface = mLayout.render();
//We will now iterate through every pixel in the surface:
//First get the iterator
Surface::Iter iter = mSurface.getIter();
// For every line in the surface
//
while ( iter.line() )
{
// For every pixel in the line
while (iter.pixel()) {
//Check if the color of the current pixel is not black
if ( ( iter.r() != 0.0f ) && ( iter.g() != 0.0f ) && ( iter.b() != 0.0f ) )
{
//If its not black, push the position of the pixel into
// the initial positions
mInitialPositions.push_back(ci::Vec2f(iter.x(), iter.y()));
// Also, lets make the current positions equal to the initial
// ones
mCurrentPositions.push_back(ci::Vec2f(iter.x(), iter.y()));
//lets also keep the color of every pixel
mPixelColors.push_back(Colorf(iter.r(), iter.g(), iter.b()));
}
}
}
//Print the size of non-black pixels found in the surface
console() << "We found " << mInitialPositions.size() <<
" non black pixels" << endl;
console() << "Spacebar changes: explode /move back" << endl;
console() << "P or p changes: whether the particles are paused or not" << endl;
}
void BuddhabrotApp::update()
{
runBrot();
Surface::Iter iter = mSurface.getIter();
int x = 0;
int y = 0;
int index;
while( iter.line() ) {
y = iter.y();
while( iter.pixel() ) {
x = iter.x();
index = y * TEXTURE_WIDTH + x;
double r = 0;
double g = 0;
double b = 0;
int rMax = mVMaxR;
while( rMax > 0 && mRedHistory[ rMax ] <= 4 ){
rMax --;
}
int gMax = mVMaxG;
while( gMax > 0 && mGreenHistory[ gMax ] <= 4 ){
gMax --;
}
int bMax = mVMaxB;
while( bMax > 0 && mBlueHistory[ bMax ] <= 4 ){
bMax --;
}
if( rMax > 0 ){
r = (double)mRedBuffer[index]/(double)rMax;
if( r > 1 ) r = 1;
}
if( gMax > 0 ){
g = (double)mGreenBuffer[index]/(double)gMax;
if( g > 1 ) g = 1;
}
if( bMax > 0 ){
b = (double)mBlueBuffer[index]/(double)bMax;
if( b > 1 ) b = 1;
}
iter.r() = (int)( r * 255 );
iter.g() = (int)( g * 255 );
iter.b() = (int)( b * 255 );
}
}
mTexture = gl::Texture( mSurface );
}
void PerlinContent::generateNoiseForPosition(const ci::Vec2f & position)
{
Surface::Iter iter = mNoiseSurface.getIter();
while( iter.line() )
{
while( iter.pixel() )
{
//float v = mPerlin.noise(((iter.x() + position.x) * mFrequency),
//((iter.y() + position.y) * mFrequency));
//float val = 0.5 + v;
float val = getValueAtPosition(Vec2f(iter.x() + position.x,
iter.y() + position.y));
iter.r() = iter.g() = iter.b() = ci::math<int>::clamp(val * 255, 0, 255);
}
}
}