taken me a while to do this from zero knowledge of Ogre. I literally just downloaded ogre like 2 days ago. There are bits and pieces of information around the forum but none of them are complete and most of them are based on ExampleApp.
This is one for the noobs (like me) who dont wanna use ExampleApp or script files.
so here we go, Ogre Hello World:
Headers
Code: Select all
#include <Ogre.h>
#include <OgreTextAreaOverlayElement.h>
#include <OgreFontManager.h>
Ogre::RenderWindow *renderWindow = NULL;Code: Select all
class FrameListener : public Ogre::FrameListener
{
public:
FrameListener(){}
bool frameStarted(const Ogre::FrameEvent& evt)
{
// stop render in main window is closed
if(renderWindow->isClosed()){return false;}
return true;
}
bool frameEnded(const Ogre::FrameEvent &evt){return true;}
};Code: Select all
int main(int argc, char* argv[])
{
try
{
//************************************************
// Ogre Initialization
//************************************************
// create the root
Ogre::Root *root = new Ogre::Root();
// configure the renderer
root->showConfigDialog();
// init root
root->initialise(false);
// create the main window
renderWindow = root->createRenderWindow("Main",640,480,false);
// create a scene
Ogre::SceneManager *sceneMan = root->getSceneManager(Ogre::ST_GENERIC);
// createa a camera
Ogre::Camera *cam = sceneMan->createCamera("mainCam");
// create a view port
Ogre::Viewport *vp = renderWindow->addViewport(cam);
//************************************************
// Load a font
//************************************************
// get the resource manager
Ogre::ResourceGroupManager &resgroup = Ogre::ResourceGroupManager::getSingleton();
// tell it to look at this location
resgroup.addResourceLocation("<.ttf folder>", "FileSystem");
// get the font manager
Ogre::FontManager &fman = Ogre::FontManager::getSingleton();
// create a font resource
Ogre::ResourcePtr resource = fman.create("Arial",Ogre::ResourceGroupManager::DEFAULT_RESOURCE_GROUP_NAME);
// set as truetype
resource->setParameter("type","truetype");
// set the .ttf file name
resource->setParameter("source","<somefont.ttf>");
// set the size
resource->setParameter("size","16");
// set the dpi
resource->setParameter("resolution","96");
// load the ttf
resource->load();
//************************************************
// Create the text area
//************************************************
// adapted from http://www.ogre3d.org/wiki/index.php/Creating_Overlays_via_Code
// credit to DWORD
Ogre::OverlayManager& overlayManager = Ogre::OverlayManager::getSingleton();
// Create a panel
Ogre::OverlayContainer* panel = static_cast<Ogre::OverlayContainer*>(
overlayManager.createOverlayElement("Panel", "PanelName"));
panel->setMetricsMode(Ogre::GMM_PIXELS);
panel->setPosition(10, 10);
panel->setDimensions(100, 100);
// Create a text area
Ogre::TextAreaOverlayElement* textArea = static_cast<Ogre::TextAreaOverlayElement*>(
overlayManager.createOverlayElement("TextArea", "TextAreaName"));
textArea->setMetricsMode(Ogre::GMM_PIXELS);
textArea->setPosition(0, 0);
textArea->setDimensions(100, 100);
textArea->setCharHeight(16);
// set the font name to the font resource that you just created.
textArea->setFontName("Arial");
// say something
textArea->setCaption("Hello, World!");
// Add the text area to the panel
panel->addChild(textArea);
// Create an overlay, and add the panel
Ogre::Overlay* overlay = overlayManager.create("OverlayName");
overlay->add2D(panel);
// Show the overlay
overlay->show();
//************************************************
// Set the frame listener and start rendering
//************************************************
// add the simple frame listener
FrameListener listener;
root->addFrameListener(&listener);
// start rendering
root->startRendering();
} catch(Ogre::Exception& e ) {
printf("An exception has occured: %s\n",
e.getFullDescription().c_str());
}
return 0;
}
