Ocean multifractal model. https://www.shadertoy.com/view/MdXyzX. More...
#include <archestree.h>
Inheritance diagram for TerraOcean:
Public Member Functions | |
| TerraOcean (const Disc2 &, const double &, const double &=1.0) | |
| Create an ocean disc primitive. More... | |
| virtual ScalarAlpha | ElevationAlpha (const Vector2 &) const |
| Compute the elevation and weight. More... | |
| virtual int | Memory () const |
| Compute the size of a node. More... | |
| void | Draw (QGraphicsScene &) const |
| Renders the node into a QGraphicsScene. More... | |
 Public Member Functions inherited from TerraSkeleton | |
| TerraSkeleton (const double &, const double &) | |
| Create a primitive with a radial falloff function. More... | |
| double | Alpha (const double &) const |
| Compute the falloff function. More... | |
| Public Member Functions inherited from TerraPrimitive | |
| TerraPrimitive () | |
| Create a primitive. | |
| ~TerraPrimitive () | |
| Recusively destroy the sub-trees. | |
| int | Traversal (const Vector2 &) const |
| Compute the number of nodes that are traversed when evaluating the tree. More... | |
| Public Member Functions inherited from TerraNode | |
| TerraNode (const Box2 &=Box2::Infinity) | |
| Create a node. More... | |
| virtual Box2 | GetBox () const |
| Returns the bouding box of a node. | |
| virtual double | Elevation (const Vector2 &) const |
| Compute the elevation at a given position. More... | |
| virtual double | Alpha (const Vector2 &) const |
| Compute the alpha mask at a given position. More... | |
| virtual Vector2 | Gradient (const Vector2 &) const |
| Compute the gradient at a given position. More... | |
| virtual Vector | Normal (const Vector2 &) const |
| Compute the normal at a given position. More... | |
| virtual void | writeJson (QJsonObject &) |
| Compute the Json Document of the subtree. | |
| ScalarField2 | Sample (const Array2 &) const |
| Create a discrete scalar field by sampling the elevation over a given domain. More... | |
| ScalarField2 | Alpha (const Array2 &) const |
| Create a discrete scalar field by sampling the elevation over a given domain. More... | |
| void | Blend (HeightField &) const |
| Blend a given node with an existing terrain over an input heightfield. More... | |
| void | Add (HeightField &) const |
| Add a given node with an existing heightfield. More... | |
Protected Attributes | |
| Disc2 | disc |
| Disc. | |
| double | z |
| Elevation. | |
| int | n |
| Iterations. | |
| double | t |
| Time. | |
| Protected Attributes inherited from TerraSkeleton | |
| double | alpha |
| Weight. | |
| Protected Attributes inherited from TerraNode | |
| Box2 | box = Box2::Infinity |
| Bounding box. | |
Additional Inherited Members | |
| Static Protected Attributes inherited from TerraNode | |
| static const double | epsilon = 1e-2 |
| Epsilon value for gradient computations. | |
Detailed Description
Ocean multifractal model. https://www.shadertoy.com/view/MdXyzX.
Constructor & Destructor Documentation
◆ TerraOcean()
| TerraOcean::TerraOcean | ( | const Disc2 & | d, |
| const double & | r, | ||
| const double & | a = 1.0 |
||
| ) |
Create an ocean disc primitive.
- Parameters
-
d Disc. r Radius. a Alpha.
References TerraNode::box, Box2::Extended(), Circle2::GetBox(), n, and t.
Member Function Documentation
◆ Draw()
|
virtual |
Renders the node into a QGraphicsScene.
- Parameters
-
scene The scene.
Reimplemented from TerraNode.
References disc, Circle2::Draw(), and Circle2::Extended().
◆ ElevationAlpha()
|
virtual |
Compute the elevation and weight.
- Parameters
-
p Point.
Reimplemented from TerraNode.
References TerraSkeleton::Alpha(), TerraNode::box, disc, Box2::Inside(), Math::Lerp(), n, Disc2::R(), t, and z.
◆ Memory()
|
virtual |
Compute the size of a node.
Reimplemented from TerraNode.
