forked from teamnwah/openmw-tes3coop
OpenCS: preliminary port of cell rendering to OSG
scrawl
10 years ago
parent
aedafe651a
commit
72400747f2
@ -1,359 +0,0 @@
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#include "textoverlay.hpp"
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#include <OgreCamera.h>
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#include <OgreMaterialManager.h>
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#include <OgreTechnique.h>
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#include <OgreOverlayManager.h>
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#include <OgreOverlayContainer.h>
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#include <OgreFontManager.h>
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#include <OgreTextAreaOverlayElement.h>
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#include <OgreEntity.h>
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#include <OgreViewport.h>
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#include <OgreRoot.h>
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#include <OgreHardwarePixelBuffer.h>
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namespace CSVRender
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{
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// Things to do:
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// - configurable font size in pixels (automatically calulate everything else from it)
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// - configurable texture to use
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// - try material script
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// - decide whether to use QPaint (http://www.ogre3d.org/tikiwiki/Ogre+overlays+using+Qt)
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// http://www.ogre3d.org/tikiwiki/ObjectTextDisplay
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// http://www.ogre3d.org/tikiwiki/MovableTextOverlay
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// http://www.ogre3d.org/tikiwiki/Creating+dynamic+textures
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// http://www.ogre3d.org/tikiwiki/ManualObject
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TextOverlay::TextOverlay(const Ogre::MovableObject* obj, const Ogre::Camera* camera, const Ogre::String& id)
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: mOverlay(0), mCaption(""), mDesc(""), mEnabled(true), mCamera(camera), mObj(obj), mId(id)
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, mOnScreen(false) , mInstance(0), mFontHeight(16) // FIXME: make font height configurable
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{
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if(id == "" || !camera || !obj)
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throw std::runtime_error("TextOverlay could not be created.");
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// setup font
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Ogre::FontManager &fontMgr = Ogre::FontManager::getSingleton();
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if (fontMgr.resourceExists("DejaVuLGC"))
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mFont = fontMgr.getByName("DejaVuLGC","General");
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else
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{
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mFont = fontMgr.create("DejaVuLGC","General");
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mFont->setType(Ogre::FT_TRUETYPE);
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mFont->setSource("DejaVuLGCSansMono.ttf");
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mFont->setTrueTypeSize(mFontHeight);
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mFont->setTrueTypeResolution(96);
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}
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if(!mFont.isNull())
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mFont->load();
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else
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throw std::runtime_error("TextOverlay font not loaded.");
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// setup overlay
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Ogre::OverlayManager &overlayMgr = Ogre::OverlayManager::getSingleton();
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mOverlay = overlayMgr.getByName("CellIDPanel"+mId+Ogre::StringConverter::toString(mInstance));
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// FIXME: this logic is badly broken as it is possible to delete an earlier instance
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while(mOverlay != NULL)
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{
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mInstance++;
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mOverlay = overlayMgr.getByName("CellIDPanel"+mId+Ogre::StringConverter::toString(mInstance));
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}
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mOverlay = overlayMgr.create("CellIDPanel"+mId+Ogre::StringConverter::toString(mInstance));
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// create texture
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Ogre::TexturePtr texture = Ogre::TextureManager::getSingleton().getByName("DynamicTransBlue");
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if(texture.isNull())
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{
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texture = Ogre::TextureManager::getSingleton().createManual(
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"DynamicTransBlue", // name
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Ogre::ResourceGroupManager::DEFAULT_RESOURCE_GROUP_NAME,
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Ogre::TEX_TYPE_2D, // type
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8, 8, // width & height
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0, // number of mipmaps
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Ogre::PF_BYTE_BGRA, // pixel format
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Ogre::TU_DEFAULT); // usage; should be TU_DYNAMIC_WRITE_ONLY_DISCARDABLE for
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// textures updated very often (e.g. each frame)
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Ogre::HardwarePixelBufferSharedPtr pixelBuffer = texture->getBuffer();
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pixelBuffer->lock(Ogre::HardwareBuffer::HBL_NORMAL);
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const Ogre::PixelBox& pixelBox = pixelBuffer->getCurrentLock();
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Ogre::uint8* pDest = static_cast<Ogre::uint8*>(pixelBox.data);
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// Fill in some pixel data. This will give a semi-transparent blue,
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// but this is of course dependent on the chosen pixel format.
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for (size_t j = 0; j < 8; j++)
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{
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for(size_t i = 0; i < 8; i++)
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{
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*pDest++ = 255; // B
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*pDest++ = 0; // G
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*pDest++ = 0; // R
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*pDest++ = 63; // A
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}
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pDest += pixelBox.getRowSkip() * Ogre::PixelUtil::getNumElemBytes(pixelBox.format);
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}
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pixelBuffer->unlock();
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}
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// setup material for containers
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Ogre::MaterialPtr mQuadMaterial = Ogre::MaterialManager::getSingleton().getByName(
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"TransOverlayMaterial");
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if(mQuadMaterial.isNull())
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{
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Ogre::MaterialPtr mQuadMaterial = Ogre::MaterialManager::getSingleton().create(
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"TransOverlayMaterial",
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Ogre::ResourceGroupManager::DEFAULT_RESOURCE_GROUP_NAME, true );
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Ogre::Pass *pass = mQuadMaterial->getTechnique( 0 )->getPass( 0 );
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pass->setLightingEnabled( false );
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pass->setDepthWriteEnabled( false );
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pass->setSceneBlending( Ogre::SBT_TRANSPARENT_ALPHA );
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Ogre::TextureUnitState *tex = pass->createTextureUnitState("MyCustomState", 0);
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tex->setTextureName("DynamicTransBlue");
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tex->setTextureFiltering( Ogre::TFO_ANISOTROPIC );
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mQuadMaterial->load();
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}
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mContainer = static_cast<Ogre::OverlayContainer*>(overlayMgr.createOverlayElement(
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"Panel", "container"+mId +"#"+Ogre::StringConverter::toString(mInstance)));
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mContainer->setMaterialName("TransOverlayMaterial");
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mOverlay->add2D(mContainer);
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// setup text area overlay element
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mElement = static_cast<Ogre::TextAreaOverlayElement*>(overlayMgr.createOverlayElement(
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"TextArea", "text"+mId +"#"+Ogre::StringConverter::toString(mInstance)));
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mElement->setMetricsMode(Ogre::GMM_RELATIVE);
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mElement->setDimensions(1.0, 1.0);
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mElement->setMetricsMode(Ogre::GMM_PIXELS);
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mElement->setPosition(2*fontHeight()/3, 1.3*fontHeight()/3); // 1.3 & 2 = fudge factor
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mElement->setFontName("DejaVuLGC");
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mElement->setCharHeight(fontHeight()); // NOTE: seems that this is required as well as font->setTrueTypeSize()
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mElement->setHorizontalAlignment(Ogre::GHA_LEFT);
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//mElement->setColour(Ogre::ColourValue(1.0, 1.0, 1.0)); // R, G, B
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mElement->setColour(Ogre::ColourValue(1.0, 1.0, 0)); // yellow
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mContainer->addChild(mElement);
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mOverlay->show();
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}
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void TextOverlay::getScreenCoordinates(const Ogre::Vector3& position, Ogre::Real& x, Ogre::Real& y)
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{
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Ogre::Vector3 hcsPosition = mCamera->getProjectionMatrix() * (mCamera->getViewMatrix() * position);
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x = 1.0f - ((hcsPosition.x * 0.5f) + 0.5f); // 0 <= x <= 1 // left := 0,right := 1
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y = ((hcsPosition.y * 0.5f) + 0.5f); // 0 <= y <= 1 // bottom := 0,top := 1
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}
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void TextOverlay::getMinMaxEdgesOfAABBIn2D(float& MinX, float& MinY, float& MaxX, float& MaxY,
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bool top)
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{
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MinX = 0, MinY = 0, MaxX = 0, MaxY = 0;
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float X[4]; // the 2D dots of the AABB in screencoordinates
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float Y[4];
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if(!mObj->isInScene())
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return;
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const Ogre::AxisAlignedBox &AABB = mObj->getWorldBoundingBox(true); // the AABB of the target
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Ogre::Vector3 cornersOfAABB[4];
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if(top)
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{
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cornersOfAABB[0] = AABB.getCorner(Ogre::AxisAlignedBox::FAR_LEFT_TOP);
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cornersOfAABB[1] = AABB.getCorner(Ogre::AxisAlignedBox::FAR_RIGHT_TOP);
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cornersOfAABB[2] = AABB.getCorner(Ogre::AxisAlignedBox::NEAR_LEFT_TOP);
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cornersOfAABB[3] = AABB.getCorner(Ogre::AxisAlignedBox::NEAR_RIGHT_TOP);
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}
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else
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{
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cornersOfAABB[0] = AABB.getCorner(Ogre::AxisAlignedBox::FAR_LEFT_BOTTOM);
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cornersOfAABB[1] = AABB.getCorner(Ogre::AxisAlignedBox::FAR_RIGHT_BOTTOM);
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cornersOfAABB[2] = AABB.getCorner(Ogre::AxisAlignedBox::NEAR_LEFT_BOTTOM);
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cornersOfAABB[3] = AABB.getCorner(Ogre::AxisAlignedBox::NEAR_RIGHT_BOTTOM);
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}
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//The normal vector of the plane. This points directly infront of the camera.
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Ogre::Vector3 cameraPlainNormal = mCamera->getDerivedOrientation().zAxis();
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//the plane that devides the space before and behind the camera.
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Ogre::Plane CameraPlane = Ogre::Plane(cameraPlainNormal, mCamera->getDerivedPosition());
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for (int i = 0; i < 4; i++)
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{
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X[i] = 0;
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Y[i] = 0;
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getScreenCoordinates(cornersOfAABB[i],X[i],Y[i]); // transfor into 2d dots
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if (CameraPlane.getSide(cornersOfAABB[i]) == Ogre::Plane::NEGATIVE_SIDE)
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{
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if (i == 0) // accept the first set of values, no matter how bad it might be.
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{
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MinX = X[i];
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MinY = Y[i];
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MaxX = X[i];
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MaxY = Y[i];
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}
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else // now compare if you get "better" values
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{
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if (MinX > X[i]) MinX = X[i];
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if (MinY > Y[i]) MinY = Y[i];
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if (MaxX < X[i]) MaxX = X[i];
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if (MaxY < Y[i]) MaxY = Y[i];
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}
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}
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else
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{
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MinX = 0;
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MinY = 0;
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MaxX = 0;
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MaxY = 0;
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break;
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}
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}
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}
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TextOverlay::~TextOverlay()
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{
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Ogre::OverlayManager::OverlayMapIterator iter = Ogre::OverlayManager::getSingleton().getOverlayIterator();
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if(!iter.hasMoreElements())
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mOverlay->hide();
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Ogre::OverlayManager *overlayMgr = Ogre::OverlayManager::getSingletonPtr();
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mContainer->removeChild("text"+mId+"#"+Ogre::StringConverter::toString(mInstance));
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mOverlay->remove2D(mContainer);
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if(!iter.hasMoreElements())
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overlayMgr->destroy(mOverlay);
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}
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void TextOverlay::show(bool show)
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{
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if(show && mOnScreen)
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mContainer->show();
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else
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mContainer->hide();
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}
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void TextOverlay::enable(bool enable)
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{
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if(enable == mOverlay->isVisible())
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return;
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mEnabled = enable;
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if(enable)
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mOverlay->show();
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else
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mOverlay->hide();
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}
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bool TextOverlay::isEnabled()
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{
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return mEnabled;
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}
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void TextOverlay::setCaption(const Ogre::String& text)
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{
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if(mCaption == text)
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return;
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mCaption = text;
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mElement->setCaption(text);
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}
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void TextOverlay::setDesc(const Ogre::String& text)
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{
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if(mDesc == text)
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return;
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mDesc = text;
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mElement->setCaption(mCaption + ((text == "") ? "" : ("\n" + text)));
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}
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Ogre::FontPtr TextOverlay::getFont()
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{
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return mFont;
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}
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int TextOverlay::textWidth()
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{
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float captionWidth = 0;
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float descWidth = 0;
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for(Ogre::String::const_iterator i = mCaption.begin(); i < mCaption.end(); ++i)
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{
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if(*i == 0x0020)
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captionWidth += getFont()->getGlyphAspectRatio(0x0030);
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else
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captionWidth += getFont()->getGlyphAspectRatio(*i);
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}
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for(Ogre::String::const_iterator i = mDesc.begin(); i < mDesc.end(); ++i)
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{
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if(*i == 0x0020)
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descWidth += getFont()->getGlyphAspectRatio(0x0030);
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else
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descWidth += getFont()->getGlyphAspectRatio(*i);
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}
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captionWidth *= fontHeight();
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descWidth *= fontHeight();
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return (int) std::max(captionWidth, descWidth);
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}
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int TextOverlay::fontHeight()
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{
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return mFontHeight;
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}
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void TextOverlay::update()
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{
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float min_x, max_x, min_y, max_y;
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getMinMaxEdgesOfAABBIn2D(min_x, min_y, max_x, max_y, false);
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if ((min_x>0.0) && (max_x<1.0) && (min_y>0.0) && (max_y<1.0))
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{
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mOnScreen = true;
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mContainer->show();
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}
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else
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{
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mOnScreen = false;
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mContainer->hide();
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return;
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}
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getMinMaxEdgesOfAABBIn2D(min_x, min_y, max_x, max_y);
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Ogre::OverlayManager &overlayMgr = Ogre::OverlayManager::getSingleton();
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float viewportWidth = std::max(overlayMgr.getViewportWidth(), 1); // zero at the start
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float viewportHeight = std::max(overlayMgr.getViewportHeight(), 1); // zero at the start
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int width = fontHeight()*2/3 + textWidth() + fontHeight()*2/3; // add margins
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int height = fontHeight()/3 + fontHeight() + fontHeight()/3;
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if(mDesc != "")
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height = fontHeight()/3 + 2*fontHeight() + fontHeight()/3;
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float relTextWidth = width / viewportWidth;
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float relTextHeight = height / viewportHeight;
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float posX = 1 - (min_x + max_x + relTextWidth)/2;
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float posY = 1 - max_y - (relTextHeight-fontHeight()/3/viewportHeight);
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mContainer->setMetricsMode(Ogre::GMM_RELATIVE);
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mContainer->setPosition(posX, posY);
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mContainer->setDimensions(relTextWidth, relTextHeight);
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mPos = QRect(posX*viewportWidth, posY*viewportHeight, width, height);
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}
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QRect TextOverlay::container()
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{
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return mPos;
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}
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}
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@ -1,66 +0,0 @@
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#ifndef OPENCS_VIEW_TEXTOVERLAY_H
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#define OPENCS_VIEW_TEXTOVERLAY_H
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#include <QRect>
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#include <OgreString.h>
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#include <OgreFont.h>
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namespace Ogre
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{
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class MovableObject;
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class Camera;
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class Font;
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class Overlay;
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class OverlayContainer;
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class TextAreaOverlayElement;
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}
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namespace CSVRender
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{
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class TextOverlay
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{
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Ogre::Overlay* mOverlay;
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Ogre::OverlayContainer* mContainer;
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Ogre::TextAreaOverlayElement* mElement;
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Ogre::String mCaption;
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Ogre::String mDesc;
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const Ogre::MovableObject* mObj;
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const Ogre::Camera* mCamera;
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Ogre::FontPtr mFont;
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int mFontHeight; // in pixels
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Ogre::String mId;
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QRect mPos;
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bool mEnabled;
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bool mOnScreen;
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int mInstance;
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Ogre::FontPtr getFont();
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int textWidth();
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int fontHeight();
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void getScreenCoordinates(const Ogre::Vector3& position, Ogre::Real& x, Ogre::Real& y);
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void getMinMaxEdgesOfAABBIn2D(float& MinX, float& MinY, float& MaxX, float& MaxY,
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bool top = true);
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public:
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TextOverlay(const Ogre::MovableObject* obj, const Ogre::Camera* camera, const Ogre::String &id);
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virtual ~TextOverlay();
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void enable(bool enable); // controlled from scene widget toolbar visibility mask
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void show(bool show); // for updating from render target listener
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bool isEnabled();
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void setCaption(const Ogre::String& text);
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void setDesc(const Ogre::String& text);
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void update();
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QRect container(); // for detection of mouse click on the overlay
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Ogre::String getCaption() { return mCaption; } // FIXME: debug
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Ogre::String getDesc() { return mDesc; }
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};
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}
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#endif // OPENCS_VIEW_TEXTOVERLAY_H
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