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History: IntermediateTutorial5Source
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Source of version: 4
(current)
This is the source for ((Intermediate Tutorial 5)). IntermediateTutorial5.h {CODE(wrap="1",colors="c++")} #ifndef __IntermediateTutorial5_h_ #define __IntermediateTutorial5_h_ #include "BaseApplication.h" class IntermediateTutorial5 : public BaseApplication { public: IntermediateTutorial5(void); virtual ~IntermediateTutorial5(void); protected: virtual void createScene(void); virtual void createGrassMesh(void); }; #endif // #ifndef __IntermediateTutorial5_h_ {CODE} IntermediateTutorial5.cpp {CODE(wrap="1",colors="c++")} #include "IntermediateTutorial5.h" //------------------------------------------------------------------------------------- IntermediateTutorial5::IntermediateTutorial5(void) { } //------------------------------------------------------------------------------------- IntermediateTutorial5::~IntermediateTutorial5(void) { } void IntermediateTutorial5::createGrassMesh(void) { //declare all of our grass variables const float width = 25.0f; const float height = 30.0f; Ogre::ManualObject grass("GrassObject"); Ogre::Vector3 vec(width / 2, 0, 0); Ogre::Quaternion rot; rot.FromAngleAxis(Ogre::Degree(60), Ogre::Vector3::UNIT_Y); //start defining our manual object grass.begin("Examples/GrassBlades", Ogre::RenderOperation::OT_TRIANGLE_LIST); //define the 4 vertices of our quad and set to the texture coordinates for(int i = 0; i < 3; ++i) { grass.position(-vec.x, height, -vec.z); grass.textureCoord(0, 0); grass.position(vec.x, height, vec.z); grass.textureCoord(1, 0); grass.position(-vec.x, 0, -vec.z); grass.textureCoord(0, 1); grass.position(vec.x, 0, vec.z); grass.textureCoord(1, 1); int offset = i * 4; grass.triangle(offset, offset + 3, offset + 1); grass.triangle(offset, offset + 2, offset + 3); //rotate the next quad vec = rot * vec; } grass.end(); //create an actual mesh out of this object grass.convertToMesh("GrassBladesMesh"); } //------------------------------------------------------------------------------------- void IntermediateTutorial5::createScene(void) { createGrassMesh(); mSceneMgr->setAmbientLight(Ogre::ColourValue::White); mCamera->setPosition(150, 50, 150); mCamera->lookAt(0, 0, 0); Ogre::Entity* robot = mSceneMgr->createEntity("robot", "robot.mesh"); mSceneMgr->getRootSceneNode()->createChildSceneNode()->attachObject(robot); Ogre::Plane plane; plane.normal = Ogre::Vector3::UNIT_Y; plane.d = 0; Ogre::MeshManager::getSingleton().createPlane("floor", Ogre::ResourceGroupManager::DEFAULT_RESOURCE_GROUP_NAME, plane, 450.0f, 450.0f, 10, 10, true, 1, 50.0f, 50.0f, Ogre::Vector3::UNIT_Z); Ogre::Entity* planeEnt = mSceneMgr->createEntity("plane", "floor"); planeEnt->setMaterialName("Examples/GrassFloor"); planeEnt->setCastShadows(false); mSceneMgr->getRootSceneNode()->createChildSceneNode()->attachObject(planeEnt); Ogre::Entity* grass = mSceneMgr->createEntity("grass", "GrassBladesMesh"); Ogre::StaticGeometry* sg = mSceneMgr->createStaticGeometry("GrassArea"); const int size = 375; const int amount = 20; sg->setRegionDimensions(Ogre::Vector3(size, size, size)); sg->setOrigin(Ogre::Vector3(-size/2, 0, -size/2)); for(int x = -size / 2; x < size /2; x += (size/amount)) { for(int z = -size / 2; z < size / 2; z += (size/amount)) { Ogre::Real r = size / float(amount / 2); Ogre::Vector3 pos(x + Ogre::Math::RangeRandom(-r, r), 0, z + Ogre::Math::RangeRandom(-r, r)); Ogre::Vector3 scale(1, Ogre::Math::RangeRandom(0.9f, 1.1f), 1); Ogre::Quaternion orientation; orientation.FromAngleAxis(Ogre::Degree(Ogre::Math::RangeRandom(0, 359)), Ogre::Vector3::UNIT_Y); sg->addEntity(grass, pos, orientation, scale); } sg->build(); } } #if OGRE_PLATFORM == OGRE_PLATFORM_WIN32 #define WIN32_LEAN_AND_MEAN #include "windows.h" #endif #ifdef __cplusplus extern "C" { #endif #if OGRE_PLATFORM == OGRE_PLATFORM_WIN32 INT WINAPI WinMain( HINSTANCE hInst, HINSTANCE, LPSTR strCmdLine, INT ) #else int main(int argc, char *argv[]) #endif { // Create application object IntermediateTutorial5 app; try { app.go(); } catch( Ogre::Exception& e ) { #if OGRE_PLATFORM == OGRE_PLATFORM_WIN32 MessageBox( NULL, e.getFullDescription().c_str(), "An exception has occured!", MB_OK | MB_ICONERROR | MB_TASKMODAL); #else std::cerr << "An exception has occured: " << e.getFullDescription().c_str() << std::endl; #endif } return 0; } #ifdef __cplusplus } #endif {CODE}
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