int main()
{
CubicSpline cubicSpline(DEFAULT_PATH);
std::cout << "f(2.5) = " << cubicSpline.interpolate(2.5) << std::endl;
return 0;
}
Vector PerlinGenerator::at( const Vector& pos )
{
//return sky( pos.x,pos.y,pos.z, SKY_BLUE, CLOUD_WHITE ) ;
Vector n = pos/worldNormalizer ;
switch( noiseType )
{
case PerlinNoiseType::Sky:
return sky( n.x, n.y, n.z, SKY_BLUE, CLOUD_WHITE ) ;
case PerlinNoiseType::Wood:
return wood( n.x, n.y, n.z ) ;
case PerlinNoiseType::Marble:
default:
return marble( n.x,n.y,n.z, n.x ) ;
case PerlinNoiseType::CustomLinear:
return linearSpline( PerlinNoise3D( n.x,n.y,n.z, persistence, lacunarity, octaves ) ) ;
case PerlinNoiseType::CustomQuadratic:
return quadraticSpline( PerlinNoise3D( n.x,n.y,n.z, persistence, lacunarity, octaves ) ) ;
case PerlinNoiseType::CustomCubic:
return cubicSpline( PerlinNoise3D( n.x,n.y,n.z, persistence, lacunarity, octaves ) ) ;
case PerlinNoiseType::CustomQuartic:
return quarticSpline( PerlinNoise3D( n.x,n.y,n.z, persistence, lacunarity, octaves ) ) ;
case PerlinNoiseType::CustomQuintic:
return quinticSpline( PerlinNoise3D( n.x,n.y,n.z, persistence, lacunarity, octaves ) ) ;
}
}
Vector PerlinGenerator::marble( double x, double y, double z, double grainVariable,
int freckling, double freqBoost,
const Vector& c1, const Vector& c2, const Vector& c3, const Vector& c4 )
{
// sin( x + |noise(p)| + .5*|noise(2p)| + ... )
real n = PerlinNoise3D( x,y,z, 2, 2, freckling ) ;
real val = sin( freqBoost*(grainVariable + n) ) ;
// You can also blend using a bezier type spline,
real t = ( 1 + val ) / 2.0 ;
return cubicSpline( t,c1,c2,c3,c4 ) ;
}
bool IPLGradientOperator::processInputData(IPLImage* image , int, bool)
{
// delete previous result
delete _result;
_result = new IPLOrientedImage(image->width(), image->height());
// get properties
int algorithm = getProcessPropertyInt("algorithm");
switch (algorithm){
case 0:
default:
return fastGradient(image);
case 1:
return roberts(image);
case 2:
return sobel(image);
case 3:
return cubicSpline(image);
}
//make compiler happy...
return false;
}
Vector PerlinGenerator::cubicSpline( real t )
{
return cubicSpline( t, color1, color2, color3, color4 ) ;
}
