436 lines
19 KiB
C++
436 lines
19 KiB
C++
/****************************************************************************
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* VCGLib o o *
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* Visual and Computer Graphics Library o o *
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* _ O _ *
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* Copyright(C) 2004 \/)\/ *
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* Visual Computing Lab /\/| *
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* ISTI - Italian National Research Council | *
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* \ *
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* All rights reserved. *
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* *
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* This program is free software; you can redistribute it and/or modify *
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* it under the terms of the GNU General Public License as published by *
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* the Free Software Foundation; either version 2 of the License, or *
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* (at your option) any later version. *
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* *
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* This program is distributed in the hope that it will be useful, *
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* but WITHOUT ANY WARRANTY; without even the implied warranty of *
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
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* GNU General Public License (http://www.gnu.org/licenses/gpl.txt) *
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* for more details. *
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* *
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****************************************************************************/
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#ifndef __VCG_GL_MESH_ATTRIBUTES_INFO
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#define __VCG_GL_MESH_ATTRIBUTES_INFO
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namespace vcg
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{
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struct GLMeshAttributesInfo
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{
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struct GLBOException : public std::exception
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{
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GLBOException(const char* text)
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:std::exception(),_text(text) {}
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~GLBOException() throw() {}
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inline const char* what() const throw() {return _text.c_str();}
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private:
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std::string _text;
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};
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/*WARNING!!!! why not a plain and simple enum? because i need to add further values to this enumeration, but the user of the class should not be interested and/or directly manage those other additional values*/
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/*the struct is extended in GLMeshAttributesFeeder class, introducing the ATT_VERTINDICES and ATT_EDGEINDICES values for the class internal use*/
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struct ATT_NAMES
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{
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static const unsigned int ATT_VERTPOSITION = 0;
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static const unsigned int ATT_VERTNORMAL = 1;
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static const unsigned int ATT_FACENORMAL = 2;
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static const unsigned int ATT_VERTCOLOR = 3;
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static const unsigned int ATT_FACECOLOR = 4;
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static const unsigned int ATT_MESHCOLOR = 5;
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static const unsigned int ATT_VERTTEXTURE = 6;
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static const unsigned int ATT_WEDGETEXTURE = 7;
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enum {ATT_ARITY = 8};
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ATT_NAMES()
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:_val(ATT_VERTPOSITION)
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{
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}
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ATT_NAMES(unsigned int att)
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{
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if ((att < ATT_VERTPOSITION) || (att >= ATT_NAMES::enumArity()))
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throw GLBOException("Out of range value\n");
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else
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_val = att;
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}
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static unsigned int enumArity()
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{
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return ATT_ARITY;
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}
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operator unsigned int() const
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{
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return _val;
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}
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bool operator==(unsigned int r) const
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{
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return (_val == r);
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}
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bool operator!=(unsigned int r) const
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{
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return (_val != r);
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}
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protected:
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unsigned int _val;
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};
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enum PRIMITIVE_MODALITY
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{
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PR_NONE = 0x00000000,
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PR_BBOX = 0x00000001,
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PR_POINTS = 0x00000002,
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PR_WIREFRAME_EDGES = 0x00000004,
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PR_WIREFRAME_TRIANGLES = 0x00000008,
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PR_SOLID = 0x00000010
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};
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typedef unsigned int PRIMITIVE_MODALITY_MASK;
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template<typename ATT_NAMES_DERIVED_CLASS>
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class RenderingAtts
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{
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public:
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RenderingAtts()
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{
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reset();
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}
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RenderingAtts(const RenderingAtts<ATT_NAMES_DERIVED_CLASS>& att)
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{
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reset();
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//_atts = new bool[ATT_NAMES_DERIVED_CLASS::enumArity()];
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for(unsigned int ii = 0;ii < ATT_NAMES_DERIVED_CLASS::enumArity();++ii)
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(*this)[ii] = att[ii];
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}
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~RenderingAtts()
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{
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}
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RenderingAtts<ATT_NAMES_DERIVED_CLASS>& operator=(const RenderingAtts<ATT_NAMES_DERIVED_CLASS>& att)
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{
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reset();
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for(unsigned int ii = 0;ii < ATT_NAMES_DERIVED_CLASS::enumArity();++ii)
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(*this)[ii] = att[ii];
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return (*this);
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}
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/*bool operator[](ATT_NAMES_DERIVED_CLASS att) const
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{
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unsigned int ii = att;
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if (ii >= ATT_NAMES_DERIVED_CLASS::enumArity())
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throw GLFeederException("Out of range value\n");
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return _atts[ii];
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}
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bool& operator[](ATT_NAMES_DERIVED_CLASS att)
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{
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unsigned int ii = att;
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if (ii >= ATT_NAMES_DERIVED_CLASS::enumArity())
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throw GLFeederException("Out of range value\n");
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return _atts[ii];
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}*/
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bool operator[](unsigned int ind) const
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{
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if (ind >= ATT_NAMES_DERIVED_CLASS::enumArity())
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throw GLBOException("Out of range value\n");
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return _atts[ind];
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}
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bool& operator[](unsigned int ind)
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{
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if (ind >= ATT_NAMES_DERIVED_CLASS::enumArity())
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throw GLBOException("Out of range value\n");
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return _atts[ind];
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}
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void reset(bool posactivated = false)
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{
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//delete[] _atts;
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//_atts = new bool[ATT_NAMES_DERIVED_CLASS::enumArity()];
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for(unsigned int ii = 0;ii < ATT_NAMES_DERIVED_CLASS::enumArity();++ii)
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_atts[ii] = false;
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_atts[ATT_NAMES_DERIVED_CLASS::ATT_VERTPOSITION] = posactivated;
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}
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static RenderingAtts<ATT_NAMES_DERIVED_CLASS> unionSet(const RenderingAtts<ATT_NAMES_DERIVED_CLASS>& a,const RenderingAtts<ATT_NAMES_DERIVED_CLASS>& b)
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{
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RenderingAtts<ATT_NAMES_DERIVED_CLASS> res;
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for(unsigned int ii = 0; ii < ATT_NAMES_DERIVED_CLASS::enumArity();++ii)
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res[ii] = a[ii] || b[ii];
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return res;
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}
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static RenderingAtts<ATT_NAMES_DERIVED_CLASS> complementSet(const RenderingAtts<ATT_NAMES_DERIVED_CLASS>& a,const RenderingAtts<ATT_NAMES_DERIVED_CLASS>& b)
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{
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/*TRUTH TABLE*/
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//this[ATT_NAMES] | rq[ATT_NAMES] | res
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// true | true | false
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// true | false | true
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// false | true | false
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// false | false | false
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RenderingAtts<ATT_NAMES_DERIVED_CLASS> res = a;
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for(unsigned int ii = 0; ii < ATT_NAMES_DERIVED_CLASS::enumArity();++ii)
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{
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if (res[ii])
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res[ii] = !(b[ii]);
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}
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return res;
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}
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static RenderingAtts<ATT_NAMES_DERIVED_CLASS> intersectionSet(const RenderingAtts<ATT_NAMES_DERIVED_CLASS>& a,const RenderingAtts<ATT_NAMES_DERIVED_CLASS>& b)
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{
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RenderingAtts<ATT_NAMES_DERIVED_CLASS> res;
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for(unsigned int ii = 0; ii < ATT_NAMES_DERIVED_CLASS::enumArity();++ii)
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res[ii] = a[ii] && b[ii];
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return res;
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}
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//template<typename MESHTYPE>
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//static void computeARequestedAttributesSetCompatibleWithMesh(const MESHTYPE& mesh,const PRIMITIVE_MODALITY_MASK,RenderingAtts<ATT_NAMES_DERIVED_CLASS>& rqatt)
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//{
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// if (mesh.VN() == 0)
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// {
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// rqatt.reset();
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// return;
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// }
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// rqatt[ATT_NAMES_DERIVED_CLASS::ATT_VERTPOSITION] = true;
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// rqatt[ATT_NAMES_DERIVED_CLASS::ATT_VERTNORMAL] = rqatt[ATT_NAMES_DERIVED_CLASS::ATT_VERTNORMAL] && vcg::tri::HasPerVertexNormal(mesh);
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// rqatt[ATT_NAMES_DERIVED_CLASS::ATT_FACENORMAL] = rqatt[ATT_NAMES_DERIVED_CLASS::ATT_FACENORMAL] && vcg::tri::HasPerFaceNormal(mesh);
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// rqatt[ATT_NAMES_DERIVED_CLASS::ATT_VERTCOLOR] = rqatt[ATT_NAMES_DERIVED_CLASS::ATT_VERTCOLOR] && vcg::tri::HasPerVertexColor(mesh);
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// rqatt[ATT_NAMES_DERIVED_CLASS::ATT_FACECOLOR] = rqatt[ATT_NAMES_DERIVED_CLASS::ATT_FACECOLOR] && vcg::tri::HasPerFaceColor(mesh);
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// rqatt[ATT_NAMES_DERIVED_CLASS::ATT_MESHCOLOR] = rqatt[ATT_NAMES_DERIVED_CLASS::ATT_MESHCOLOR];
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// rqatt[ATT_NAMES_DERIVED_CLASS::ATT_VERTTEXTURE] = rqatt[ATT_NAMES_DERIVED_CLASS::ATT_VERTTEXTURE] && vcg::tri::HasPerVertexTexCoord(mesh);
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// rqatt[ATT_NAMES_DERIVED_CLASS::ATT_WEDGETEXTURE] = rqatt[ATT_NAMES_DERIVED_CLASS::ATT_WEDGETEXTURE] && vcg::tri::HasPerWedgeTexCoord(mesh);
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//}
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protected:
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/*an array of enumArity() bool values*/
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bool _atts[ATT_NAMES_DERIVED_CLASS::ATT_ARITY];
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};
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typedef RenderingAtts<ATT_NAMES> RendAtts;
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//template<typename MESH_TYPE>
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//static void computeRenderingAttributesCompatibleWithMesh( const MESH_TYPE& mesh,const PRIMITIVE_MODALITY_MASK& inputpm,const RendAtts& inputatts,
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// PRIMITIVE_MODALITY_MASK& outputpm,RendAtts& outputatts )
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//{
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// outputpm = 0;
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// outputatts.reset();
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// if (mesh.VN() == 0)
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// return;
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// outputatts[ATT_NAMES::ATT_VERTPOSITION] = inputatts[ATT_NAMES::ATT_VERTPOSITION];
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// bool validfaces = (mesh.FN() > 0);
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// if (!validfaces)
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// {
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// outputpm = (unsigned int) PR_POINTS;
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// return;
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// }
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// outputpm = inputpm;
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// if ((inputpm & vcg::GLMeshAttributesInfo::PR_WIREFRAME_EDGES) && (!vcg::tri::HasPerVertexFlags(mesh)))
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// outputpm = outputpm & (!vcg::GLMeshAttributesInfo::PR_WIREFRAME_EDGES);
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// outputatts[ATT_NAMES::ATT_VERTNORMAL] = inputatts[ATT_NAMES::ATT_VERTNORMAL] && vcg::tri::HasPerVertexNormal(mesh);
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// outputatts[ATT_NAMES::ATT_FACENORMAL] = inputatts[ATT_NAMES::ATT_FACENORMAL] && vcg::tri::HasPerFaceNormal(mesh) && validfaces;
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// outputatts[ATT_NAMES::ATT_VERTCOLOR] = inputatts[ATT_NAMES::ATT_VERTCOLOR] && vcg::tri::HasPerVertexColor(mesh);
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// outputatts[ATT_NAMES::ATT_FACECOLOR] = inputatts[ATT_NAMES::ATT_FACECOLOR] && vcg::tri::HasPerFaceColor(mesh) && validfaces;
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// outputatts[ATT_NAMES::ATT_MESHCOLOR] = inputatts[ATT_NAMES::ATT_MESHCOLOR];
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// //horrible trick caused by MeshLab GUI. In MeshLab exists just a button turning on/off the texture visualization.
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// //Unfortunately the RenderMode::textureMode member field is not just a boolean value but and enum one.
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// //The enum-value depends from the enabled attributes of input mesh.
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// bool wedgetexture = vcg::tri::HasPerWedgeTexCoord(mesh) && validfaces;
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// outputatts[ATT_NAMES::ATT_VERTTEXTURE] = inputatts[ATT_NAMES::ATT_VERTTEXTURE] && (vcg::tri::HasPerVertexTexCoord(mesh) && (!wedgetexture));
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// outputatts[ATT_NAMES::ATT_WEDGETEXTURE] = inputatts[ATT_NAMES::ATT_WEDGETEXTURE] && wedgetexture;
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//}
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protected:
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struct INT_ATT_NAMES : public ATT_NAMES
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{
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/*WARNING!!!!!! the edges index bo it's just used only by the edges and quads meshes, NOT by the triangle meshes. Triangles meshes use just the vertex index array*/
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/*WHY? cause quads meshes need both index arrays. One to render the "usual" mesh, the other one to render the wireframe quadrangulation on top of it*/
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/*A triangles meshes rendered in wireframe or in solid wireframe, in order to save GPU memory, use the glPolygonMode approach*/
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/*Edges meshes uses the edges index array just for a matter of coherence*/
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/*WARNING!!!! to be changed whit ATT_NAMES::enumArity() + 1 (and so on...) as soon as constexpr will be supported by most of the old c++ compilers*/
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static const unsigned int ATT_VERTINDICES = 8;
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static const unsigned int ATT_EDGEINDICES = 9;
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enum {ATT_ARITY = 10};
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INT_ATT_NAMES()
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:ATT_NAMES()
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{
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}
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INT_ATT_NAMES(unsigned int att)
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:ATT_NAMES()
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{
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if ((att < INT_ATT_NAMES::ATT_VERTPOSITION) || (att >= INT_ATT_NAMES::enumArity()))
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throw GLBOException("Out of range value\n");
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else
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_val = att;
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}
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static unsigned int enumArity()
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{
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return ATT_ARITY;
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}
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operator unsigned int() const
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{
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return _val;
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}
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};
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class InternalRendAtts : public RenderingAtts<INT_ATT_NAMES>
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{
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public:
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InternalRendAtts()
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:RenderingAtts<INT_ATT_NAMES>()
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{
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}
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InternalRendAtts(const RendAtts& reqatt)
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:RenderingAtts<INT_ATT_NAMES>()
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{
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for(unsigned int ii = 0;ii < ATT_NAMES::enumArity();++ii)
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{
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(*this)[ii] = reqatt[ii];
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}
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(*this)[INT_ATT_NAMES::ATT_VERTINDICES] = false;
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(*this)[INT_ATT_NAMES::ATT_EDGEINDICES] = false;
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}
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InternalRendAtts(const RendAtts& reqatt,PRIMITIVE_MODALITY pm)
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:RenderingAtts<INT_ATT_NAMES>()
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{
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for(unsigned int ii = 0;ii < ATT_NAMES::enumArity();++ii)
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(*this)[ii] = reqatt[ii];
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(*this)[INT_ATT_NAMES::ATT_VERTINDICES] = isVertexIndexingRequired(reqatt,pm);
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(*this)[INT_ATT_NAMES::ATT_EDGEINDICES] = isEdgeIndexingRequired(pm);
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}
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InternalRendAtts(const RendAtts& reqatt,PRIMITIVE_MODALITY_MASK pm)
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:RenderingAtts<INT_ATT_NAMES>()
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{
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for(unsigned int ii = 0;ii < ATT_NAMES::enumArity();++ii)
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(*this)[ii] = reqatt[ii];
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(*this)[INT_ATT_NAMES::ATT_VERTINDICES] = isVertexIndexingRequired(reqatt,pm);
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(*this)[INT_ATT_NAMES::ATT_EDGEINDICES] = isEdgeIndexingRequired(pm);
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}
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InternalRendAtts(const RenderingAtts<INT_ATT_NAMES>& r)
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:RenderingAtts<INT_ATT_NAMES>(r)
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{
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}
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static InternalRendAtts create(const RendAtts& rqatts,PRIMITIVE_MODALITY_MASK pm)
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{
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return InternalRendAtts(rqatts,pm);
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}
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//upcast from InternalRendAtts to RendAtts
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operator RendAtts() const
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{
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RendAtts rendatt;
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for(unsigned int ii = 0;ii < ATT_NAMES::enumArity();++ii)
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rendatt[ii] = _atts[ii];
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return rendatt;
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}
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static bool isPerVertexAttribute(INT_ATT_NAMES name)
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{
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return ((name == INT_ATT_NAMES::ATT_VERTPOSITION) || (name == INT_ATT_NAMES::ATT_VERTNORMAL) || (name == INT_ATT_NAMES::ATT_VERTCOLOR) || (name == INT_ATT_NAMES::ATT_VERTTEXTURE));
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}
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static bool replicatedPipelineNeeded(const RendAtts& rqatt)
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{
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return (rqatt[INT_ATT_NAMES::ATT_FACENORMAL] || rqatt[INT_ATT_NAMES::ATT_FACECOLOR] || rqatt[INT_ATT_NAMES::ATT_WEDGETEXTURE]);
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}
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static bool isVertexIndexingRequired(const RendAtts& rqatt,PRIMITIVE_MODALITY pm)
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{
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return (!replicatedPipelineNeeded(rqatt) && ((pm == PR_SOLID) || (pm == PR_WIREFRAME_TRIANGLES)));
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}
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static bool isVertexIndexingRequired(const RendAtts& rqatt,PRIMITIVE_MODALITY_MASK pm)
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{
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bool required = false;
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if (pm & PR_POINTS)
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required = required || isVertexIndexingRequired(rqatt,PR_POINTS);
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if (pm & PR_WIREFRAME_EDGES)
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required = required || isVertexIndexingRequired(rqatt,PR_WIREFRAME_EDGES);
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if (pm & PR_WIREFRAME_TRIANGLES)
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required = required || isVertexIndexingRequired(rqatt,PR_WIREFRAME_TRIANGLES);
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if (pm & PR_SOLID)
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required = required || isVertexIndexingRequired(rqatt,PR_SOLID);
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if (pm & PR_BBOX)
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required = required || isVertexIndexingRequired(rqatt,PR_BBOX);
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return required;
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}
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static bool isEdgeIndexingRequired(PRIMITIVE_MODALITY pm)
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{
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return (pm == PR_WIREFRAME_EDGES);
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}
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static bool isEdgeIndexingRequired(PRIMITIVE_MODALITY_MASK pm)
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{
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bool required = false;
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//if (pm & PR_POINTS)
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// required = isEdgeIndexingRequired(PR_POINTS);
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//if (pm & PR_WIREFRAME_TRIANGLES)
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// required = isEdgeIndexingRequired(PR_WIREFRAME_TRIANGLES);
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if (pm & PR_WIREFRAME_EDGES)
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required = isEdgeIndexingRequired(PR_WIREFRAME_EDGES);
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//if (pm & PR_SOLID)
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// required = isEdgeIndexingRequired(PR_SOLID);
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//if (pm & PR_BBOX)
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// required = isEdgeIndexingRequired(PR_BBOX);
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return required;
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}
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};
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};
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}
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#endif |