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public:t-gede-15-1:lab4 [2015/02/02 19:04] – [Preparation] marinopublic:t-gede-15-1:lab4 [2024/04/29 13:33] (current) – external edit 127.0.0.1
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 ===== Discussion ===== ===== Discussion =====
  
-Discussion thread for this lab is here: [[https://piazza.com/class/hq7dlipqggr2qe?cid=9|Lab 4 Discussion Thread]]+Discussion thread for this lab is here: [[https://piazza.com/class/i4l9of1fw8j3ew?cid=33|Lab 4 Discussion Thread]]
  
 ===== Goal ====== ===== Goal ======
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 You need to do the following to set up the right tools: You need to do the following to set up the right tools:
-  * Download and install the [[http://www.blender.org/|Blender 3D]] modeling and rendering environment, use the latest version (2.73a) +  * Download and install the [[http://www.blender.org/|Blender 3D]] modeling and rendering environment, use the latest version (2.76b) 
-  * Install the [[http://code.google.com/p/blender2ogre/|Blender2Ogre]] Plug-in for Blender 2.69 and above +  * Install the Blender2Ogre Plug-in for Blender 
-    * Download the file [[http://code.google.com/p/blender2ogre/downloads/detail?name=blender2ogre-0.6.0.zip|blender2ogre-0.6.0.zip]] (if you use Blender 2.69)+    * Download the file [[http://code.google.com/p/blender2ogre/downloads/detail?name=blender2ogre-0.6.0.zip|blender2ogre-0.6.0.zip]] 
     * Run Blender and from **File->User Preferences...** choose the **Addons** panel and click the **Install Add-On** button. Navigate to and select your downloaded ZIP archive.      * Run Blender and from **File->User Preferences...** choose the **Addons** panel and click the **Install Add-On** button. Navigate to and select your downloaded ZIP archive. 
     * Once Blender has processed the ZIP file you should see the exporter listed, but grayed out. Check the check-box next to it to activate it.     * Once Blender has processed the ZIP file you should see the exporter listed, but grayed out. Check the check-box next to it to activate it.
     * Now you can run the exporter from the Blender **File->Export** menu (pick the Ogre 3D export) and make sure that the object you want to export has been selected in the 3D scene.     * Now you can run the exporter from the Blender **File->Export** menu (pick the Ogre 3D export) and make sure that the object you want to export has been selected in the 3D scene.
   * Make sure that the **OgreXMLConverter.exe** (or OgreXMLConverter_d.exe) that comes with Ogre is in your executable system path, you will find this tool inside your Ogre **bin\Release** (or **bin\Debug**) folder   * Make sure that the **OgreXMLConverter.exe** (or OgreXMLConverter_d.exe) that comes with Ogre is in your executable system path, you will find this tool inside your Ogre **bin\Release** (or **bin\Debug**) folder
- 
 ===== Lab Project ===== ===== Lab Project =====
  
 Follow these steps to complete the lab project: Follow these steps to complete the lab project:
-  - **Create a custom Model Folder** Go to the folder where your compiled executables end up (e.g. in the solution's ''Debug'' folder ''"solutionName"/Debug/"ProjectName"/'') and create a sub-folder called ''Models''. In order for this folder to be found by your Ogre application, you need to add it to the list of FileSystems in your application's ''resources_d.cfg'' file. You can use a relative path (e.g. ''FileSystem=Models''). +  - **Create a custom Model Folder** Go to the folder LabFiles that you created in Lab 1 and create a sub-folder called ''Models''. In order for this folder to be found by your Ogre application, you need to add it to the list of FileSystems in your application's ''resources_d.cfg'' file. You can use a relative path (e.g. ''FileSystem=../LabFiles/Models''). 
   - **Create a 3D Model in Blender** If you are completely new to Blender, then you can even just use the default cube you get when you start up the Blender environment. However, you should try to modify the cube a little bit if you can. There are a lot of good resources on Blender modeling, including the [[http://wiki.blender.org/index.php/Doc:2.6/Tutorials/Resources/External_links|Official Getting Started]] tutorials out on the Internet.     - **Create a 3D Model in Blender** If you are completely new to Blender, then you can even just use the default cube you get when you start up the Blender environment. However, you should try to modify the cube a little bit if you can. There are a lot of good resources on Blender modeling, including the [[http://wiki.blender.org/index.php/Doc:2.6/Tutorials/Resources/External_links|Official Getting Started]] tutorials out on the Internet.  
     * It is a good idea to save your model in the Blender file format early and often       * It is a good idea to save your model in the Blender file format early and often  
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   - **Create a New Entity** In your ''createScene'' method in your application, you should now create a new Entity that gets associated with the model resource you just created. Make sure that your code makes this new Entity visible in the scene by attaching it to the scene graph.   - **Create a New Entity** In your ''createScene'' method in your application, you should now create a new Entity that gets associated with the model resource you just created. Make sure that your code makes this new Entity visible in the scene by attaching it to the scene graph.
     * In C++ it would look like this: <code cpp>             * In C++ it would look like this: <code cpp>        
-Ogre::Entity* mycube = _sceneManager->createEntity("MyCube", "MyCubeMesh.mesh"); +Ogre::Entity* myModel = _sceneManager->createEntity("MyModel", "MyModelMesh.mesh"); 
-Ogre::SceneNode* cubeNode = _sceneManager->getRootSceneNode()->createChildSceneNode(); +Ogre::SceneNode* modelNode = _sceneManager->getRootSceneNode()->createChildSceneNode(); 
-cubeNode->attachObject(mycube); +modelNode->attachObject(myModel); 
-cubeNode->setScale(50,10,50); // You may have to scale your object to see it well\\+modelNode->setScale(50,10,50); // You may have to scale your object to see it well\\
 </code>  </code> 
   - **Play with Mesh File** Open up your exported **mesh** **XML** file and make sure you understand its structure. Try changing values inside it and observe the changes in your Ogre application, but remember to run the OgreXMLConverter again!   - **Play with Mesh File** Open up your exported **mesh** **XML** file and make sure you understand its structure. Try changing values inside it and observe the changes in your Ogre application, but remember to run the OgreXMLConverter again!
   - **Play with Material File** Notice that inside the **XML** file the submesh refers to a **Material** by name, find the corresponding ** *.material ** file in your model folder (it got exported along with the mesh XML file) and read through it. This is the material that Ogre reads in along with the mesh. Try changing values of the material (e.g. the diffuse values) inside the exported material file and observe the changes in your Ogre application (you do not have to run the OgreXMLConverter again for this, the material is already in the right format)    - **Play with Material File** Notice that inside the **XML** file the submesh refers to a **Material** by name, find the corresponding ** *.material ** file in your model folder (it got exported along with the mesh XML file) and read through it. This is the material that Ogre reads in along with the mesh. Try changing values of the material (e.g. the diffuse values) inside the exported material file and observe the changes in your Ogre application (you do not have to run the OgreXMLConverter again for this, the material is already in the right format) 
-  - **Create more Entities** Create more entities from the same mesh, but assign different materials to them. Note that you can still use the ''_sceneManager->createEntity("MyCube2", "MyCubeMesh.mesh");'' method. The resource manager is clever enough not to load the model twice from disk. Create a new material inside the same material file you looked at earlier, by copy-pasting the material definition within the same file and changing its name (e.g. into **BlueMaterial**) and give it different values (e.g. making the diffuse color blue). Aassign the new material to a new entity in your Ogre application with the **setMaterialName** method like this: <code cpp>     +  - **Create more Entities** Create more entities from the same mesh, but assign different materials to them. Note that you can still use the ''_sceneManager->createEntity("MyModel2", "MyModelMesh.mesh");'' method. The resource manager is clever enough not to load the model twice from disk. Create a new material inside the same material file you looked at earlier, by copy-pasting the material definition within the same file and changing its name (e.g. into **BlueMaterial**) and give it different values (e.g. making the diffuse color blue). Aassign the new material to a new entity in your Ogre application with the **setMaterialName** method like this: <code cpp>     
-myCube->setMaterialName("BlueMaterial");+myModel->setMaterialName("BlueMaterial");
 </code> </code>
    
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     - **Now change the material of a submesh.**     - **Now change the material of a submesh.**
       - Create a file ''MyMaterial.material'' and save it in a folder ''Materials'' next to the Model folder.       - Create a file ''MyMaterial.material'' and save it in a folder ''Materials'' next to the Model folder.
-      - Add the line ''FileSystem=Materials'' to the ''resources_d.cfg''+      - Add the line ''FileSystem=../LabFiles/Materials'' to the ''resources_d.cfg''
       - paste this material script into the file ''MyMaterial.material'' <code>material Sinbad/Body2       - paste this material script into the file ''MyMaterial.material'' <code>material Sinbad/Body2
 { {
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     }     }
 }</code> }</code>
-    - **Copy {{:public:t-gede-14-1:my_sinbad_body.png?linkonly| this_image }} into the folder** ''Models'' And now finally apply this mesh to the body of Sinbad, you can tweak the texture if that's your fancy :) <code cpp>// In the MyApplication::createScene function+    - **Copy {{:public:t-gede-14-1:my_sinbad_body.png?linkonly| this_image }} into the folder** ''Materials'' And now finally apply this mesh to the body of Sinbad, you can tweak the texture if that's your fancy :) <code cpp>// In the MyApplication::createScene function
 _SinbadEnt->getSubEntity(1)->setMaterialName("Sinbad/Body2");</code> _SinbadEnt->getSubEntity(1)->setMaterialName("Sinbad/Body2");</code>
   - **Add additional entities into the scene** As you could have noticed in the ''Sinbad.zip'' pack file, there was also a mesh for his sword ''sword.mesh''.   - **Add additional entities into the scene** As you could have noticed in the ''Sinbad.zip'' pack file, there was also a mesh for his sword ''sword.mesh''.
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 ===== When You Are Finished ===== ===== When You Are Finished =====
  
-Upload your **commented SOURCE files, no solution or project files please** into Lab4 in MySchool (zip them up if more than one) also include the required files such as materials or mesh files.  +Upload your **commented SOURCE files, no solution or project files please** into Lab4 in MySchool (zip them up if more than one) also include the required files such as materials or mesh files.
- +
-The lab projects will not be graded, but their completion counts towards your participation grade.+
/var/www/cadia.ru.is/wiki/data/attic/public/t-gede-15-1/lab4.1422903868.txt.gz · Last modified: 2024/04/29 13:32 (external edit)
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