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Ogre 3D Animation

Ogre 3D Animation. Agung Toto Wibowo http://gameprogramming.blog.ittelkom.ac.id/blog/ Materi tutorial diambil dari wiki Ogre : http://www.ogre3d.org/wiki/index.php/Ogre_Tutorials. Pendahuluan.

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Ogre 3D Animation

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  1. Ogre 3D Animation Agung Toto Wibowo http://gameprogramming.blog.ittelkom.ac.id/blog/ Materi tutorial diambil dari wiki Ogre : http://www.ogre3d.org/wiki/index.php/Ogre_Tutorials

  2. Pendahuluan • Di pelajaranini, padadasarnya Ogre tidakmembuatalgoritmauntukanimasidengansendirinya. • Animasidibuatdari 3D modelling tools yang lain seperti 3ds max, blender dlsb. • Yang dilakukanhanyamentranslasidanmerotasikanentitas yang memilikianimasi.

  3. PersiapanAnimasi using namespace std; class MoveDemoListener : public ExampleFrameListener { public: MoveDemoListener(RenderWindow* win, Camera* cam, SceneNode *sn, Entity *ent, deque<Vector3> &walk) : ExampleFrameListener(win, cam, false, false), mNode(sn), mEntity(ent), mWalkList(walk) { } // MoveDemoListener /* This function is called to start the object moving to the next position in mWalkList. */ boolnextLocation() { return true; } // nextLocation() boolframeStarted(const FrameEvent &evt) { return ExampleFrameListener::frameStarted(evt); } protected: Real mDistance; // sisajarak yang masihharusditempuh Vector3 mDirection, mDestination; // vektorarahdanlokasitujuan AnimationState*mAnimationState; // State animasidariobjek Entity *mEntity; // Entitas yang dianimasikan SceneNode *mNode; // SceneNodetempat Entity diletakkan std::deque<Vector3> mWalkList; // list lokasi yang akandilalui Real mWalkSpeed; // kecepatanentitasberjalan }; • BuataplikasidengannamaOgre “MoveDemoApplication” Extend ExampleFrameListener Jalurpergerakananimasi

  4. Persiapan Animasi class MoveDemoApplication : public ExampleApplication { protected: public: MoveDemoApplication() { } ~MoveDemoApplication() { } protected: Entity *mEntity; // entitasdariobjek yang akandianimasikan SceneNode *mNode; // SceneNodedari object yang bergerak std::deque<Vector3> mWalkList; // deque yang berisititikpergerakan void createScene(void) { } void createFrameListener(void) { mFrameListener= new MoveDemoListener(mWindow, mCamera, mNode, mEntity, mWalkList); mFrameListener->showDebugOverlay(true); mRoot->addFrameListener(mFrameListener); } };

  5. Skenario • Kita letakkanobjek yang akanbergerak. • Kita letakkanobjek lain sebagaiacuan agar terlihatbahwaobjektelahbergerak. • Kita set list point pergerakanobjek. • Kita amatidengankameraberadadilokasi ideal.

  6. MeletakkanObjek Buatpencahayaanenvirontmentmenjaditerang • TambahkankodeberikutpadaMoveDemoApplication::createScene() // Set the default lighting. mSceneMgr->setAmbientLight(ColourValue(1.0f, 1.0f, 1.0f)); // Create the entity mEntity= mSceneMgr->createEntity("Robot", "robot.mesh"); // Create the scene node mNode= mSceneMgr->getRootSceneNode()->createChildSceneNode("RobotNode", Vector3(0.0f, 0.0f, 25.0f)); mNode->attachObject(mEntity);

  7. Menambahkan list pergerakan • TambahkankodeberikutpadaMoveDemoApplication::createScene() // Create the walking list mWalkList.push_back(Vector3(550.0f, 0.0f, 50.0f )); mWalkList.push_back(Vector3(-100.0f, 0.0f, -200.0f)); // bisakitatambahkanlagisesukakita, ataudarihasilalgoritma A*

  8. MenambahkanObjek lain (acuan) • TambahkankodeberikutpadaMoveDemoApplication::createScene() // Create objects so we can see movement Entity *ent; SceneNode *node; ent = mSceneMgr->createEntity("Knot1", "knot.mesh"); node = mSceneMgr->getRootSceneNode()->createChildSceneNode("Knot1Node", Vector3(0.0f, -10.0f, 25.0f)); node->attachObject(ent); node->setScale(0.1f, 0.1f, 0.1f); ent = mSceneMgr->createEntity("Knot2", "knot.mesh"); node = mSceneMgr->getRootSceneNode()->createChildSceneNode("Knot2Node", Vector3(550.0f, -10.0f, 50.0f)); node->attachObject(ent); node->setScale(0.1f, 0.1f, 0.1f);

  9. MeletakkanKamera • TambahkankodeberikutpadaTutorialApplication:: createCamera() // Set the camera to look at our handiwork mCamera->setPosition(90.0f, 280.0f, 535.0f); mCamera->pitch(Degree(-30.0f)); mCamera->yaw(Degree(-15.0f));

  10. Animasi • TambahkankodeberikutpadakontructorMoveDemoListener // Set idle animation mAnimationState= ent->getAnimationState("Idle"); mAnimationState->setLoop(true); mAnimationState->setEnabled(true); • Kompiledanjalankanaplikasi. // perlukita update animationstatedenganevt.timeSinceLastFrame // padaMoveDemoListener::frameStarted mAnimationState->addTime(evt.timeSinceLastFrame);

  11. Menggerakkan Robot • Kita gantikonstruktorpadaMoveDemoListenerdengan // Set default values for variables mWalkSpeed= 35.0f; // kecepatanpergerakan mDirection= Vector3::ZERO; // untuk status tidakbergerakkemanapun. • SedangpadaMoveDemoListener::frameStartedkitatambahkandengankodeberikut (sebelumAnimationState::addTime) : if (mDirection == Vector3::ZERO) { if (nextLocation()) { // Set walking animation mAnimationState = mEntity->getAnimationState("Walk"); mAnimationState->setLoop(true); mAnimationState->setEnabled(true); } }

  12. MengimplementasikannextLocation() • nextLocationberfungsiuntukmengecekapakahobjekmasihmemiliki point untuktujuanpergerakanatautidak. • TambahkankodeberikutpadanextLocation() if (mWalkList.empty()) return false; mDestination= mWalkList.front(); // mengambilnilaiterdepandeque mWalkList.pop_front(); // membuang front darideque mDirection= mDestination - mNode->getPosition(); mDistance= mDirection.normalise(); // mengubaharahwajah robot Vector3 src = mNode->getOrientation() * Vector3::UNIT_X; Ogre::Quaternion quat = src.getRotationTo(mDirection); mNode->rotate(quat);

  13. Kembalikemenggerakkan Robot • Robot yang adabelumberjalan, meskianimasisudahberubah. Untukmembuat robot berjalan, kitatambahkankodeberikutpadaMoveDemoListener::frameStarted(); else { Real move = mWalkSpeed * evt.timeSinceLastFrame; mDistance -= move; if (mDistance <= 0.0f) { mNode->setPosition(mDestination); mDirection = Vector3::ZERO; // Set animation based on if the robot has another point to walk to. if (! nextLocation()) { // Set Idle animation mAnimationState = mEntity->getAnimationState("Idle"); mAnimationState->setLoop(true); mAnimationState->setEnabled(true); }

  14. Kembalikemenggerakkan Robot • Lanjutan else { // Rotation Code will go here later } } else { mNode->translate(mDirection * move); } // else } // if if (mWalkList.empty()) return false;

  15. Blender dan Ogre 3D Agung Toto Wibowo http://gameprogramming.blog.ittelkom.ac.id/blog/ Materi tutorial diambil dari wiki Ogre : http://www.ogre3d.org/wiki/index.php/Ogre_Tutorials

  16. Blender dan Ogre • Objek yang dibuatdi blender dapatdiloadke Ogre. • Format pada ogre *.mesh, blender *.blend • Butuhkonversi (meshes exporter) http://www.ogre3d.org/wiki/index.php/Blender_Exporter • Download danintegrasikan Blender Exporter. • Copy ogremeshesexporter.py dan subfolders kelokasi ...\blender\.blender\scripts. • Install Python 2.5.4 (ataulebihtinggi) yang dibutuhkanoleh exporter.

  17. Blender Meshes Exporter

  18. Melihathasilkonversi • Aplikasiceguimeshviewer • Informasilebihlanjutpada link : http://www.ogre3d.org/forums/viewtopic.php?p=136714 • Mengintegrasikanlangsungkekode Ogre dengankode.

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