Tutorial - Setup Horde with Gtkmm

Here is a small example on how to use Horde with Gtkmm. This is a small tutorial on how to setup Horde with Gtk+ using Gtkmm and Gtkglextmm. cHordeWidget.hpp #ifndef CHORDEWIDGET_HPP_INCLUDED #define CHORDEWIDGET_HPP_INCLUDED #include <iostream> #include <Horde3D.h> #include <Horde3DUtils.h> #include <cstdlib> //We include the gtkmm header #include <gtkmm.h> //Now we include the gtkglmm header #include <gtkglmm.h> //We declare the cHordeWidget class and it inherits the Gtk::GL::DrawingArea class class cHordeWidget : public Gtk::GL::DrawingArea{ public: cHordeWidget(); virtual ~cHordeWidget(); protected: virtual void on_realize(); virtual bool on_configure_event(GdkEventConfigure* event); virtual bool on_expose_event(GdkEventExpose* event); private: ResHandle logoRes; }; #endif // CHORDEWIDGET_HPP_INCLUDED Now for the cHordeWidget.cpp *Read the comments* cHordeWidget.cpp #include "../include/cHordeWidget.hpp" NodeHandle model = 0, cam = 0; cHordeWidget::cHordeWidget(){ Glib::RefPtr<Gdk::GL::Config> glconfig; //We pick are opengl config options. glconfig = Gdk::GL::Config::create(Gdk::GL::MODE_RGB | Gdk::GL::MODE_DEPTH | Gdk::GL::MODE_DOUBLE); //We set are options here. set_gl_capability(glconfig); } cHordeWidget::~cHordeWidget(){ //we release the Horde3D engine here Horde3D::release(); } void cHordeWidget::on_realize(){ //We must call this base class before anything else Gtk::GL::DrawingArea::on_realize(); //Get Our opengl window must do Glib::RefPtr<Gdk::GL::Window> glwindow = get_gl_window(); //Begin working with the gl context everything we do will go under here. glwindow->gl_begin(get_gl_context()); //Resize our Horde3D screen Horde3D::resize(0,0,800,600); //set camera view Horde3D::setupCameraView(cam,45.0f,(float)800/600,0.1f,1000.0f); //end opengl glwindow->gl_end(); } bool cHordeWidget::on_configure_event(GdkEventConfigure* event){ //get gl window Glib::RefPtr<Gdk::GL::Window> glwindow = get_gl_window(); //Begin working with the gl context everything we do will go under here. glwindow->gl_begin(get_gl_context()); Horde3D::init(); Horde3DUtils::setResourcePath( ResourceTypes::SceneGraph, "models" ); Horde3DUtils::setResourcePath( ResourceTypes::Geometry, "models" ); Horde3DUtils::setResourcePath( ResourceTypes::Animation, "models" ); Horde3DUtils::setResourcePath( ResourceTypes::Material, "materials" ); Horde3DUtils::setResourcePath( ResourceTypes::Code, "shaders" ); Horde3DUtils::setResourcePath( ResourceTypes::Shader, "shaders" ); Horde3DUtils::setResourcePath( ResourceTypes::Texture2D, "textures" ); Horde3DUtils::setResourcePath( ResourceTypes::TextureCube, "textures" ); Horde3DUtils::setResourcePath( ResourceTypes::Effect, "effects" ); Horde3DUtils::setResourcePath( ResourceTypes::Pipeline, "pipelines" ); ResHandle pipeRes = Horde3D::addResource( ResourceTypes::Pipeline, "deferred.pipeline.xml",0); ResHandle modelRes = Horde3D::addResource(ResourceTypes::SceneGraph,"charecter.scene.xml",0); ResHandle animRes = Horde3D::addResource(ResourceTypes::Animation,"walk.anim.xml",0); ResHandle fontRes = Horde3D::addResource(ResourceTypes::Material,"font.material.xml",0); logoRes = Horde3D::addResource(ResourceTypes::Material,"logo.material.xml",0); Horde3DUtils::loadResourcesFromDisk("media"); Horde3D::setOption( EngineOptions::LoadTextures, 1 ); Horde3D::setOption( EngineOptions::TexCompression, 0 ); Horde3D::setOption( EngineOptions::FastAnimation, 0 ); Horde3D::setOption( EngineOptions::AnisotropyFactor, 8 ); Horde3D::setOption( EngineOptions::ShadowMapSize, 2048 ); Horde3D::setOption( EngineOptions::DebugViewMode,0.0f); model = Horde3D::addNodes(RootNode,modelRes); //Horde3D::setupModelAnimStage(model,0,animRes,"",true); NodeHandle light = Horde3D::addLightNode(RootNode,"Light1", 0,"LIGHTING","SHADOWMAP"); Horde3D::setNodeTransform(light,0,2,0,0,00,0,1,1,1); Horde3D::setNodeParamf( light, LightNodeParams::Radius, 50 ); Horde3D::setNodeParamf( light, LightNodeParams::FOV, 90 ); Horde3D::setNodeParami( light, LightNodeParams::ShadowMapCount, 3 ); Horde3D::setNodeParamf( light, LightNodeParams::ShadowSplitLambda, 0.9f ); Horde3D::setNodeParamf( light, LightNodeParams::ShadowMapBias, 0.001f ); Horde3D::setNodeParamf( light, LightNodeParams::Col_R, 0.9f ); Horde3D::setNodeParamf( light, LightNodeParams::Col_G, 0.7f ); Horde3D::setNodeParamf( light, LightNodeParams::Col_B, 0.75f ); cam = Horde3D::addCameraNode(RootNode,"Camera",pipeRes); Horde3DUtils::dumpMessages(); //end opengl glwindow->gl_end(); return true; } //This on_expose_event is are game loop everything game related goes here bool cHordeWidget::on_expose_event(GdkEventExpose* event){ float curFps = 60; curFps = curFps + 10.0f * ( 1/curFps); //get gl::window Glib::RefPtr<Gdk::GL::Window> glwindow = get_gl_window(); //Begin working with the gl context everything we do will go under here. glwindow->gl_begin(get_gl_context()); Horde3D::setNodeTransform(model,curFps*10,0,0,0,0,0,1,1,1); Horde3D::showOverlay(0.75f,0,0,0,1,0,1,0,1,0.2f,1,1,0.75f,0.2f,0,1,7,logoRes); Horde3D::render(cam); Horde3D::clearOverlays(); //end opengl glwindow->gl_end(); //Since we have a double buffer opengl context we must swap them here glwindow->swap_buffers(); return true; } Finnaly the main.cpp *Read the Comments* main.cpp #include <gtkmm.h> //Include are custom widget #include "include/cHordeWidget.hpp" int main(int argc, char *argv[]){ //Init Gtk+ Gtk::Main init (argc, argv); //Init Gtk+ opengl Gtk::GL::init (argc, argv); //Create our Window object Gtk::Window window; //Set our window title window.set_title ("Horde3D In Gtk+ Window"); //Create our cHordeWidget cHordeWidget drawing; //Set the cHordeWidgets size drawing.set_size_request(800, 600); //Add the cHordeWidget to our window window.add (drawing); //Show our cHordeWidget. All widgets are invisible by default. window.show_all (); //Run our window Gtk::Main::run (window); //Just a return statement return EXIT_SUCCESS; } --Rj 23:21, 7 August 2008 (CEST)

Horde With Gtkmm This tutorial introduces the use of Horde3D with Gtkmm Version: 1.0 Compatible with Horde3D: 1.0 beta Release date: 2008-07-8 Author(s): Raynaldo Rivera