History: BloodyMess Ogre::Terrain Heightfield
Preview of version: 5
This page is related to a deprecated version of NxOgre, called BloodyMess. Some code from here may be adopted to newer versions with sufficient care and knowledge.
Help: For any problems you encounter while working with these code, please visit the thread in the NxOgre forum.
BloodyMess Ogre::Terrain heightfield
This code shows how to create a matching heightfield from the new Ogre::Terrain, a new feature in Ogre 1.7 (currently in SVN trunk).
It does everything in realtime, so there is no need to use flour to create an .xhf or flip and rotate the heightmap.
Thanks to XpLoDWilD for solving an issue with vertex under the origin.
void loadTerrainGeometry(const Ogre::String& name, float* data, Ogre::uint16 size, Ogre::Real worldSize, Ogre::Real minHeight, Ogre::Real maxHeight, const Ogre::Vector3& position) { // Create the manual heightfield NxOgre::ManualHeightField *mhf = OGRE_NEW_T(NxOgre::ManualHeightField, Ogre::MEMCATEGORY_GENERAL)(); mhf->begin(size, size); Ogre::Real normMin = -32768.0f; Ogre::Real normMax = 32767.0f; // Sample the data to the manual heightfield for(int x = 0; x < size; ++x) { NxOgre::Enums::HeightFieldTesselation tess = NxOgre::Enums::HeightFieldTesselation_NW_SE; for(int z = size-1; z >= 0; --z) { Ogre::Real height = data[(size * z) + x]; short sample = (short)(((height - minHeight) / (maxHeight - minHeight)) * (normMax - normMin) + normMin); mhf->sample(sample, 0, 0, tess); if(tess == NxOgre::Enums::HeightFieldTesselation_NE_SW) tess = NxOgre::Enums::HeightFieldTesselation_NW_SE; else tess = NxOgre::Enums::HeightFieldTesselation_NE_SW; } } // Create the actual heightfield NxOgre::HeightField *hf = mhf->end(name.c_str()); Ogre::Real hf_size = worldSize + (worldSize / size); Ogre::Real hf_height = (maxHeight - minHeight) / 2.0f; Ogre::Real hf_pose_x = position.x - (worldSize / 2.0f); Ogre::Real hf_pose_y = position.y + ((maxHeight + minHeight) / 2.0f); Ogre::Real hf_pose_z = position.z - (worldSize / 2.0f); #if NxOgreVersionMajor <= 1 && NxOgreVersionMinor <= 5 NxOgre::HeightFieldGeometry* hfg = new NxOgre::HeightFieldGeometry(hf, NxOgre::Vec3(hf_size, hf_height, hf_size)); hfg->setLocalPose(NxOgre::Matrix44(NxOgre::Vec3(hf_pose_x, hf_pose_y, hf_pose_z))); mScene->createSceneGeometry(hfg); #else NxOgre::HeightFieldGeometryDescription desc(hf, NxOgre::Vec3(hf_size, hf_height, hf_size)); mScene->createSceneGeometry(desc, NxOgre::Matrix44(NxOgre::Vec3(hf_pose_x, hf_pose_y, hf_pose_z))); #endif // Free memory OGRE_DELETE_T(mhf, ManualHeightField, Ogre::MEMCATEGORY_GENERAL); }
You can use it like that, with "terrain" being a pointer to your Ogre::Terrain.
loadTerrainGeometry(terrain->getMaterialName(), terrain->getHeightData(), terrain->getSize(), terrain->getWorldSize(), terrain->getMinHeight(), terrain->getMaxHeight(), terrain->getPosition());
Or you can supply the data yourself.
Official Wiki and Website - Forum - Ogre Portal for NxOgre
Betajaen's Guide to creating a Bloody mess
Code snippetsbloody mess
General - Particles - Mesh Cooking - Cloths
Spacegaier's Tutorialsbloody mess
Setting up BloodyMess - First steps - Visual Debugger - Volumes & Triggers - Kinematics - Raycasting - Resources and Meshes