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124 lines
4 KiB
C++
124 lines
4 KiB
C++
#include "selectionbuffer.hpp"
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#include <OgreHardwarePixelBuffer.h>
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#include <OgreRenderTexture.h>
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#include <OgreSubEntity.h>
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#include <OgreEntity.h>
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#include <stdexcept>
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#include <extern/shiny/Main/Factory.hpp>
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namespace OEngine
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{
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namespace Render
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{
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SelectionBuffer::SelectionBuffer(Ogre::Camera *camera, int sizeX, int sizeY, int visibilityFlags)
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{
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mTexture = Ogre::TextureManager::getSingleton().createManual("SelectionBuffer",
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Ogre::ResourceGroupManager::DEFAULT_RESOURCE_GROUP_NAME, Ogre::TEX_TYPE_2D, sizeX, sizeY, 0, Ogre::PF_R8G8B8, Ogre::TU_RENDERTARGET);
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mRenderTarget = mTexture->getBuffer()->getRenderTarget();
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Ogre::Viewport* vp = mRenderTarget->addViewport(camera);
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vp->setOverlaysEnabled(false);
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vp->setBackgroundColour(Ogre::ColourValue(0, 0, 0, 0));
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vp->setShadowsEnabled(false);
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vp->setMaterialScheme("selectionbuffer");
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if (visibilityFlags != 0)
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vp->setVisibilityMask (visibilityFlags);
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mRenderTarget->setActive(true);
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mRenderTarget->setAutoUpdated (false);
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mCurrentColour = Ogre::ColourValue(0.3, 0.3, 0.3);
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}
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SelectionBuffer::~SelectionBuffer()
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{
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Ogre::TextureManager::getSingleton ().remove("SelectionBuffer");
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}
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void SelectionBuffer::update ()
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{
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Ogre::MaterialManager::getSingleton ().addListener (this);
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mRenderTarget->update();
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Ogre::MaterialManager::getSingleton ().removeListener (this);
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mTexture->convertToImage(mBuffer);
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}
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int SelectionBuffer::getSelected(int xPos, int yPos)
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{
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Ogre::ColourValue clr = mBuffer.getColourAt (xPos, yPos, 0);
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clr.a = 1;
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if (mColourMap.find(clr) != mColourMap.end())
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return mColourMap[clr];
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else
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return -1; // nothing selected
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}
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Ogre::Technique* SelectionBuffer::handleSchemeNotFound (
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unsigned short schemeIndex, const Ogre::String &schemeName, Ogre::Material *originalMaterial,
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unsigned short lodIndex, const Ogre::Renderable *rend)
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{
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if (schemeName == "selectionbuffer")
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{
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sh::Factory::getInstance ()._ensureMaterial ("SelectionColour", "Default");
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Ogre::MaterialPtr m = Ogre::MaterialManager::getSingleton ().getByName("SelectionColour");
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if(typeid(*rend) == typeid(Ogre::SubEntity))
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{
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const Ogre::SubEntity *subEntity = static_cast<const Ogre::SubEntity *>(rend);
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int id = Ogre::any_cast<int>(subEntity->getParent ()->getUserObjectBindings().getUserAny());
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bool found = false;
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Ogre::ColourValue colour;
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for (std::map<Ogre::ColourValue, int, cmp_ColourValue>::iterator it = mColourMap.begin(); it != mColourMap.end(); ++it)
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{
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if (it->second == id)
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{
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found = true;
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colour = it->first;
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}
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}
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if (!found)
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{
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getNextColour();
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const_cast<Ogre::SubEntity *>(subEntity)->setCustomParameter(1, Ogre::Vector4(mCurrentColour.r, mCurrentColour.g, mCurrentColour.b, 1.0));
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mColourMap[mCurrentColour] = id;
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}
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else
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{
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const_cast<Ogre::SubEntity *>(subEntity)->setCustomParameter(1, Ogre::Vector4(colour.r, colour.g, colour.b, 1.0));
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}
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assert(m->getTechnique(1));
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return m->getTechnique(1);
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}
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else
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throw std::runtime_error("selectionbuffer only works with entities");
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}
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return NULL;
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}
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void SelectionBuffer::getNextColour ()
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{
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Ogre::ARGB color = (float(rand()) / float(RAND_MAX)) * std::numeric_limits<Ogre::uint32>::max();
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if (mCurrentColour.getAsARGB () == color)
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{
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getNextColour();
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return;
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}
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mCurrentColour.setAsARGB(color);
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mCurrentColour.a = 1;
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}
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}
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}
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