AaronCameron.net

Not Left, nor right. Just correct.

• 
• 
• 
• 
• 

Not a Member? - Login or Create an Account

Tuesday the 22nd of May 2012 @ 02:44am

Front Page Journal Projects Your Profile About

LibN2L N2L Home Older News Downloads Documentation (n2l5) Class Hierarchy Compound List File List n2l:: Members Functions Whole n2l:: Ref Documentation (libN2L-4) Class Hierarchy Compound List File List n2l:: Members Functions Whole n2l:: Ref Bugtracker Project Page Report a Bug Bug List Related Things Life 2130 Devel Game Journal

LibN2L-4 Library Code Reference Classes Compounds Files Members Method Index Full Reference cRSkyBox.cpp Go to the documentation of this file. /************************************************************************ Nova-2 Library (libN2L, or simply n2l) Game development C++ Library Copyright (C) 2002 Aaron Cameron This library is free software; you can redistribute it and/or modify it under the terms of the GNU Lesser General Public License as published by the Free Software Foundation; either version 2.1 of the License, or (at your option) any later version. This library is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more details. You should have received a copy of the GNU Lesser General Public License along with this library; if not, write to the Free Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA A copy of the GNU Lesser General Public License has been provided with this library in the file 'COPYING'. Contact information for the author of this library has been provided with this library in the file 'AUTHOR'. ************************************************************************/ #include "renderObjects/cRSkyBox.h" #include "n2l/materials.h" #include "n2l/dynVars.h" #include "n2l/vfs.h" #include "n2l/resourceManagement.h" #include "renderObjects/cRFrustum.h" #include <math.h> using namespace std; namespace n2l { /*******************************************************************/ cRSkyBox::cRSkyBox() { init(); } /*******************************************************************/ cRSkyBox::cRSkyBox( const cVfsNodeInterface & iNode ) { init(); load( iNode ); } /*******************************************************************/ cRSkyBox::cRSkyBox( const cDynVar & iDef ) { init(); load( iDef ); } /*******************************************************************/ cRSkyBox::~cRSkyBox() { free(); } /******************************************************************/ void cRSkyBox::load( const cDynVar &iDef ) { clear(); // Do the load here try { // Are our textures a directory, or a list vector<cAutoPtr<const cGLTexture> > textures; if (iDef["textures"].isArray()) { // Load this list const cDynVar::tConstIterator Last( iDef["textures"].end() ); for (cDynVar::tConstIterator i=iDef["textures"].begin(); i!=Last; ++i) textures.push_back( cResourceManager::get<cGLTexture>(i->second) ); } subFaceRep( iDef.keyValueOr("subFaceRep", 1.0f) ); boxSize( iDef.keyValueOr("boxSize", 1.0f ) ); tUbyte divisions = tUbyte( n2lMax(tSint(iDef.keyValueOr("divisions", 1)),0) ); // Build the box as requested tString buildTypeStr( iDef["buildType"] ); if (buildTypeStr.empty()) buildTypeStr += 's'; switch ( buildTypeStr[0] ) { case 'r': randomBuildFrom( divisions, textures ); break; case 's': default: stepBuildFrom( divisions, textures ); break; } } catch ( const cException &iException ) { throw cBadDataUseException( "cRSkyBox::load", tString("Not a valid sky box: ")+ tString(iException) ); } } /******************************************************************/ void cRSkyBox::load( const cVfsNodeInterface &iNode ) { tVfsFileBuffer buffer; tUint DataOffset; try { DataOffset = vfsNodeFileWithHeader( iNode, "n2l::cRSkyBox", buffer ); } catch ( const cBadDataUseException & iException ) { throw cBadDataUseException( "cRSkyBox::load", tString("Failed to load: \"")+ iNode.name() + "\": " + tString(iException) ); } cDynVar def; def.unserialize( buffer, DataOffset ); load( def ); } /*******************************************************************/ void cRSkyBox::boxSize( const tFloat &iSize ) { mBoxSize = iSize; // Set up halfsizes const tFloat HalfSize( mBoxSize/2.0f ); mFaceOffset[0].set(-HalfSize,-HalfSize,HalfSize); mFaceOffset[1].set(-HalfSize,-HalfSize,-HalfSize); mFaceOffset[2].set(-HalfSize,-HalfSize,-HalfSize); mFaceOffset[3].set(-HalfSize,HalfSize,-HalfSize); mFaceOffset[4].set(HalfSize,-HalfSize,-HalfSize); mFaceOffset[5].set(-HalfSize,-HalfSize,-HalfSize); } /*******************************************************************/ void cRSkyBox::subFaceRep( const tFloat &iRep ) { mSubFaceRep = iRep; const tFloat SecSize( mBoxSize/(mDivisions+1) ); mFaceUnits[0][0].set(SecSize,0,0); mFaceUnits[0][1].set(0,SecSize,0); mFaceUnits[1][0].set(0,SecSize,0); mFaceUnits[1][1].set(SecSize,0,0); mFaceUnits[2][0].set(SecSize,0,0); mFaceUnits[2][1].set(0,0,SecSize); mFaceUnits[3][0].set(0,0,SecSize); mFaceUnits[3][1].set(SecSize,0,0); mFaceUnits[4][0].set(0,SecSize,0); mFaceUnits[4][1].set(0,0,SecSize); mFaceUnits[5][0].set(0,0,SecSize); mFaceUnits[5][1].set(0,SecSize,0); } /*******************************************************************/ void cRSkyBox::stepBuildFrom( const tUbyte iDivisions, const vector<cAutoPtr<const cGLTexture> > &iTextures ) { // Clear ourselves if we were built. clear(); const tUint NumTex( iTextures.size() ); if (!NumTex) throw cBadDataUseException( "cRSkyBox::stepSelectFrom", "Tried to build from an empty texture list" ); mDivisions = iDivisions; // We have to reset the cached calculations subFaceRep( mSubFaceRep ); // Do it. const tUint NumSubFaces( (mDivisions+1)*(mDivisions+1) ); mTextures = iTextures; tUint imgIndex(0); for (tUint f=Face_Front; f<Face_NumFaces; ++f) for (tUint i=0; i<NumSubFaces; ++i) { if (imgIndex==NumTex) imgIndex = 0; // Add it to the proper bin. mFaces[f][imgIndex].push_back( i ); ++imgIndex; } } /*******************************************************************/ void cRSkyBox::randomBuildFrom( const tUbyte iDivisions, const vector<cAutoPtr<const cGLTexture> > &iTextures ) { // Clear ourselves if we were built. clear(); const tUint NumTex( iTextures.size() ); if (!NumTex) throw cBadDataUseException( "cRSkyBox::stepSelectFrom", "Tried to build from an empty texture list" ); mDivisions = iDivisions; // We have to reset the cached calculations subFaceRep( mSubFaceRep ); // Do it. const tUint NumSubFaces( (mDivisions+1)*(mDivisions+1) ); mTextures = iTextures; for (tUint f=Face_Front; f<Face_NumFaces; ++f) for (tUint i=0; i<NumSubFaces; ++i) { mFaces[f][n2lRandom(NumTex)].push_back( i ); } } /*******************************************************************/ void cRSkyBox::draw( const tUint iOptions ) const { if (mDivisions==-1) return; // Do the draw. glPushAttrib( GL_ALL_ATTRIB_BITS ); glEnable( GL_TEXTURE_2D ); glDisable( GL_DEPTH_TEST ); glDisable( GL_BLEND ); glDepthMask( false ); glCullFace( GL_BACK ); glEnable( GL_CULL_FACE ); glColor4f(1,1,1,1); // Do it. for (tUint f=Face_Front; f<Face_NumFaces; ++f) { for (tTexDivMap::const_iterator t=mFaces[f].begin(); t!=mFaces[f].end(); ++t) { mTextures[t->first]->bind(); glBegin( GL_QUADS ); // Do all the sub faces associated with this texture for (vector<tUint>::const_iterator i=t->second.begin(); i!=t->second.end(); ++i) { const tVector3f SectOffset( mFaceUnits[f][0]*((*i)%(mDivisions+1)) + mFaceUnits[f][1]*((*i)/(mDivisions+1)) ); glTexCoord2f( mSubFaceRep,0 ); (SectOffset+mFaceOffset[f]+mFaceUnits[f][1]).glVertex3f(); glTexCoord2f( 0,0 ); (SectOffset+mFaceOffset[f]+mFaceUnits[f][0]+mFaceUnits[f][1]).glVertex3f(); glTexCoord2f( 0,mSubFaceRep ); (SectOffset+mFaceOffset[f]+mFaceUnits[f][0]).glVertex3f(); glTexCoord2f( mSubFaceRep,mSubFaceRep ); (SectOffset+mFaceOffset[f]).glVertex3f(); } // each subface glEnd(); } // each texture } // each face glPopAttrib(); } /*******************************************************************/ void cRSkyBox::draw( const cRFrustum &iFrustum, const tVector3f &iPosAdjust, const tUint iOptions ) const { if (mDivisions==-1) return; // Do the draw. glPushAttrib( GL_ALL_ATTRIB_BITS ); glEnable( GL_TEXTURE_2D ); glDisable( GL_DEPTH_TEST ); glDisable( GL_BLEND ); glDepthMask( false ); glCullFace( GL_BACK ); glEnable( GL_CULL_FACE ); glColor4f(1,1,1,1); // Do it. for (tUint f=Face_Front; f<Face_NumFaces; ++f) { for (tTexDivMap::const_iterator t=mFaces[f].begin(); t!=mFaces[f].end(); ++t) { mTextures[t->first]->bind(); glBegin( GL_QUADS ); // Do all the sub faces associated with this texture for (vector<tUint>::const_iterator i=t->second.begin(); i!=t->second.end(); ++i) { const tVector3f SectOffset( mFaceUnits[f][0]*((*i)%(mDivisions+1)) + mFaceUnits[f][1]*((*i)/(mDivisions+1)) ); const tVector3f p0 = (SectOffset+mFaceOffset[f]+mFaceUnits[f][1]); const tVector3f p1 = (SectOffset+mFaceOffset[f]+mFaceUnits[f][0]+mFaceUnits[f][1]); const tVector3f p2 = (SectOffset+mFaceOffset[f]+mFaceUnits[f][0]); const tVector3f p3 = (SectOffset+mFaceOffset[f]); if (!iFrustum.testQuad( p0+iPosAdjust, p1+iPosAdjust, p2+iPosAdjust, p3+iPosAdjust )) continue; glTexCoord2f( mSubFaceRep,0 ); p0.glVertex3f(); glTexCoord2f( 0,0 ); p1.glVertex3f(); glTexCoord2f( 0,mSubFaceRep ); p2.glVertex3f(); glTexCoord2f( mSubFaceRep,mSubFaceRep ); p3.glVertex3f(); } // each subface glEnd(); } // each texture } // each face glPopAttrib(); } /*******************************************************************/ void cRSkyBox::clear() { if (mDivisions==-1) return; for (tUint i=Face_Back; i<Face_NumFaces; ++i) mFaces[i].clear(); mDivisions = -1; boxSize(1.0f); subFaceRep(1.0f); } /*******************************************************************/ void cRSkyBox::init() { mDivisions = -1; boxSize(1.0f); subFaceRep(1.0f); } /*******************************************************************/ void cRSkyBox::free() { if (mDivisions==-1) return; for (tUint i=Face_Back; i<Face_NumFaces; ++i) mFaces[i].clear(); } /*******************************************************************/ /*******************************************************************/ /*******************************************************************/ /*******************************************************************/ /*******************************************************************/ /*******************************************************************/ } // namespace

©2012 Aaron Cameron