This library defines objects to help clients manage multiple viewports on a single window or screen.
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Classes | |
| struct | view::render_info_t |
| class | view::Host |
| If you are creating viewports, you'll need an object that supports this interface to handle the per-viewport callbacks for display. More... | |
| class | view::Manager |
| This object will let you create/destroy viewports as needed. More... | |
Typedefs | |
| typedef rect2d_t< int > | view::recti_t |
Functions | |
| void | view::render_info_t::clear (void) throw () |
| void | view::render_info_t::dump (const char *txt) const throw () |
| bool | view::render_info_t::isValid (void) const throw () |
| virtual void | view::Host::render3D (int id, const render_info_t &ri)=0 |
| host is being called to render this viewport's 3D scene | |
| virtual void | view::Host::render2D (int id, const render_info_t &ri)=0 |
| host is being called to render this viewport's 2D overlay. | |
| virtual int | view::Manager::getViewportCount (void) const =0 |
| virtual void | view::Manager::render (int windowWidth, int windowHeight)=0 |
| render all viewports. | |
| virtual int | view::Manager::getOwnerOfCoordinate (int x, int y, int width, int height, int &ownerX, int &ownerY)=0 |
| given an x/y coordinate, who owns it? Returns -1 if no one owns if someone owns, returns the x and y coordinates relative to the viewport of that owner. | |
| virtual bool | view::Manager::createViewport (int id, smart_ptr< Host > host)=0 |
| caller can request a new viewport be created. | |
| virtual bool | view::Manager::removeViewport (int id)=0 |
| remove the specified viewport. | |
| static smart_ptr< Manager > | view::Manager::create (void) |
Variables | |
| int | view::render_info_t::width |
| viewport width (pixels) | |
| int | view::render_info_t::height |
| viewport height (pixels) | |
Detailed Description
This library defines objects to help clients manage multiple viewports on a single window or screen.
A common use case is a client wanting to present multiple different 3D scenes on the same window.
Typedef Documentation
| typedef rect2d_t<int> view::recti_t |
Definition at line 61 of file viewport.h.
Function Documentation
| void view::render_info_t::clear | ( | void | ) | throw () [inline, inherited] |
Definition at line 66 of file viewport.h.
| void view::render_info_t::dump | ( | const char * | txt | ) | const throw () [inline, inherited] |
Definition at line 69 of file viewport.h.
| bool view::render_info_t::isValid | ( | void | ) | const throw () [inline, inherited] |
Definition at line 72 of file viewport.h.
| virtual void view::Host::render3D | ( | int | id, | |
| const render_info_t & | ri | |||
| ) | [pure virtual, inherited] |
host is being called to render this viewport's 3D scene
| virtual void view::Host::render2D | ( | int | id, | |
| const render_info_t & | ri | |||
| ) | [pure virtual, inherited] |
host is being called to render this viewport's 2D overlay.
The OpenGL drawing context has already been set for 2D drawing. 2D coordinates are relative to the viewport (so 0,0 is the top left of the viewport). Reminder: this library uses the wavepacket 2D coordinate convention, where y=0 is the top of the screen, and positive y is down. This is opposite to the usual OpenGL convention.
| virtual int view::Manager::getViewportCount | ( | void | ) | const [pure virtual, inherited] |
| virtual void view::Manager::render | ( | int | windowWidth, | |
| int | windowHeight | |||
| ) | [pure virtual, inherited] |
render all viewports.
The Manager will make two passes: first all viewports will be called on Host::render3D(), then 2D context will be set up, and then all viewports will be called on Host::render2D().
| virtual int view::Manager::getOwnerOfCoordinate | ( | int | x, | |
| int | y, | |||
| int | width, | |||
| int | height, | |||
| int & | ownerX, | |||
| int & | ownerY | |||
| ) | [pure virtual, inherited] |
given an x/y coordinate, who owns it? Returns -1 if no one owns if someone owns, returns the x and y coordinates relative to the viewport of that owner.
| virtual bool view::Manager::createViewport | ( | int | id, | |
| smart_ptr< Host > | host | |||
| ) | [pure virtual, inherited] |
caller can request a new viewport be created.
Caller is responsible for providing the ID of the new viewport. Returns false on failure (fails if ID is already in use). Viewport IDs must be greater than zero.
| virtual bool view::Manager::removeViewport | ( | int | id | ) | [pure virtual, inherited] |
remove the specified viewport.
Returns false on failure (no viewport with the specified ID found).
| smart_ptr< Manager > view::Manager::create | ( | void | ) | [static, inherited] |
Definition at line 466 of file viewport.cpp.
Variable Documentation
int view::render_info_t::width [inherited] |
viewport width (pixels)
Definition at line 77 of file viewport.h.
int view::render_info_t::height [inherited] |
viewport height (pixels)
Definition at line 78 of file viewport.h.
