void
Engine::iterBuildPoints( const Skeleton& skelet, const Zoom& zoom,
Image& image, const int imax ) const {
if ( Function::system == LINEAR ) {
for ( int i = 1; i <= imax; ++i ) {
skelet.nextPoint( _x, _y, _color );
zoom.toScreen( _x, _y );
image.mem_plot( zoom.screenX, zoom.screenY );
image.mem_coul( zoom.screenX, zoom.screenY, _color );
}
} else if ( Function::system == FORMULA || Function::system == SINUSOIDAL ) {
// since initial conditions are important, we have to give a new seed to the orbit
_x = (float)rand()*2/RAND_MAX - 1;
_y = (float)rand()*2/RAND_MAX - 1;
skelet.setXY( _x, _y, _color ); // put the seed in the orbit
for ( int i = 1; i <= imax; ++i ) {
skelet.nextPoint( _x, _y, _color );
zoom.toScreen( _x, _y );
image.mem_plot( zoom.screenX, zoom.screenY );
image.mem_coul( zoom.screenX, zoom.screenY, _color );
if ( i % 1000 == 0 ) {
_x = (float)rand()*2/RAND_MAX - 1;
_y = (float)rand()*2/RAND_MAX - 1;
skelet.setXY( _x, _y, _color );
}
}
} else { // JULIA
Julia& j = zoom.julia;
for ( int i = 1; i <= imax; ++i ) {
skelet.nextPoint( _x, _y, _color );
zoom.toScreen( _x, _y );
j.handle( _x, _y, image.getHit( zoom.screenX, zoom.screenY ) );
image.mem_plot( zoom.screenX, zoom.screenY );
image.mem_coul( zoom.screenX, zoom.screenY, _color );
}
}
}
