Perlin noise. More...
#include <noise.h>
Inheritance diagram for Noise2:
Public Member Functions | |
| Noise2 (bool=false) | |
| Create a noise function. More... | |
| ~Noise2 () | |
| Empty. | |
| double | Value (const Vector2 &) const |
| Compute noise at a given point in the plane. More... | |
| double | K () const |
| Return the global Lipschitz constant of the noise. | |
 Public Member Functions inherited from AnalyticScalarField2 | |
| AnalyticScalarField2 () | |
| Create an analytic scalar field defined over the entire plane. | |
| virtual Vector2 | Gradient (const Vector2 &) const |
| Compute the gradient of the field. More... | |
| virtual Matrix2 | Hessian (const Vector2 &) const |
| Compute the hessian at a given point. More... | |
| virtual ScalarField2 | Sample (const Array2 &) const |
| Create a discrete scalar field by sampling a given domain. More... | |
| void | Curvature (const Vector2 &, double &, double &) const |
| Compute the gaussian and mean curvatures. More... | |
| virtual Box2 | GetBox () const |
| Return the bounding box. | |
Protected Attributes | |
| bool | quintic |
| Flag defining interpolation type: either cubic (false) or quintic (true). | |
| Protected Attributes inherited from AnalyticScalarField2 | |
| Box2 | box = Box2::Infinity |
| Domain, set as infinite for base class. | |
Static Protected Attributes | |
| static double | rtable [267] |
| Random double table. | |
| static const short | hashTable [4096] |
| Hash table. | |
| Static Protected Attributes inherited from AnalyticScalarField2 | |
| static const double | epsilon = 1e-6 |
| \epsilon; value for partial derivatives | |
Additional Inherited Members | |
| Protected Member Functions inherited from AnalyticScalarField2 | |
| Matrix | Local (const Vector2 &) const |
| Compute the local neighborhood in the one-ring aroung a point. More... | |
Detailed Description
Perlin noise.
This class is used as a core class to create various types of fractal noise, such as sums of scaled noises.
- See also
- SimplexNoise
Constructor & Destructor Documentation
◆ Noise2()
| Noise2::Noise2 | ( | bool | quintic = false | ) |
Create a noise function.
- Parameters
-
quintic Flag defining whether quintic interpolation will be used, noise uses cubic interpolation if set to false.
Member Function Documentation
◆ Value()
|
virtual |
Compute noise at a given point in the plane.
- Parameters
-
p Point.
Reimplemented from AnalyticScalarField2.
Reimplemented in NoiseTurbulence2.
