This class is similar to CardMaker, but instead of generating ordinary cards, it generates a circular rose that represents the projection of a 3-D scene through a fisheye lens. More...
#include "fisheyeMaker.h"
Public Member Functions | |
| FisheyeMaker (const std::string &name) | |
| PT (PandaNode) generate() | |
| void | reset () |
| Resets all the parameters to their initial defaults. More... | |
| void | set_fov (PN_stdfloat fov) |
| Specifies the field of view of the fisheye projection. More... | |
| void | set_num_vertices (int num_vertices) |
| Specifies the approximate number of vertices to be used to generate the rose. More... | |
| void | set_reflection (bool reflection) |
| Sets the flag indicating whether the texture image should be mirrored (true) or normal (false). More... | |
| void | set_square_inscribed (bool square_inscribed, PN_stdfloat square_radius) |
| Sets the flag that indicates whether the rose should be inscribed within a square. More... | |
 Public Member Functions inherited from Namable | |
| Namable (const std::string &initial_name="") | |
| void | clear_name () |
| Resets the Namable's name to empty. More... | |
| const std::string & | get_name () const |
| bool | has_name () const |
| Returns true if the Namable has a nonempty name set, false if the name is empty. More... | |
| void | output (std::ostream &out) const |
| Outputs the Namable. More... | |
| void | set_name (const std::string &name) |
Additional Inherited Members | |
| Static Public Member Functions inherited from Namable | |
| static TypeHandle | get_class_type () |
| static void | init_type () |
| Public Attributes inherited from Namable | |
| get_name | |
| set_name | |
Detailed Description
This class is similar to CardMaker, but instead of generating ordinary cards, it generates a circular rose that represents the projection of a 3-D scene through a fisheye lens.
The texture coordinates of the rose are defined so that each 2-D vertex has a 3-D UVW that reflects the corresponding position in 3-D space of that particular vertex.
This class is particularly suited for converting cube maps to sphere maps.
Definition at line 34 of file fisheyeMaker.h.
Member Function Documentation
◆ reset()
| void FisheyeMaker::reset | ( | ) |
Resets all the parameters to their initial defaults.
Definition at line 32 of file fisheyeMaker.cxx.
References set_fov(), and set_reflection().
◆ set_fov()
| void FisheyeMaker::set_fov | ( | PN_stdfloat | fov | ) |
Specifies the field of view of the fisheye projection.
A sphere map will have a 360-degree field of view (and this is the default).
Definition at line 45 of file fisheyeMaker.cxx.
Referenced by reset().
◆ set_num_vertices()
|
inline |
Specifies the approximate number of vertices to be used to generate the rose.
This is the approximate number of vertices that will be located within the rose's unit circle, not counting the inscribing square (if any). The actual number of vertices used may be +/- 25% of this value.
Definition at line 36 of file fisheyeMaker.I.
◆ set_reflection()
|
inline |
Sets the flag indicating whether the texture image should be mirrored (true) or normal (false).
When this is true, the 3-D texture coordinates will be reversed so that the image is appropriate for a reflection. This is the best choice for generating a sphere map from a cube map. The default is false.
Definition at line 65 of file fisheyeMaker.I.
Referenced by reset().
◆ set_square_inscribed()
|
inline |
Sets the flag that indicates whether the rose should be inscribed within a square.
When this is true, an additional square is generated to inscribed the circular rose, with the indicated "radius" (the sides of the square will be 2 * square_radius). The texture coordinates of the square will uniformly map to the back pole of the cube map.
This is mainly useful to provide a good uniform background color for a sphere map so that it does not have a sharp circular edge that might produce artifacts due to numerical imprecision when mapping.
Definition at line 52 of file fisheyeMaker.I.
The documentation for this class was generated from the following files:
- panda/src/grutil/fisheyeMaker.h
- panda/src/grutil/fisheyeMaker.cxx
- panda/src/grutil/fisheyeMaker.I
