-/* $Id$
-
-This file is part of libmspgl
-Copyright © 2007-2010 Mikko Rasa, Mikkosoft Productions
-Distributed under the LGPL
-*/
-
-#include <cstring>
+#include <algorithm>
+#include <msp/strings/format.h>
#include <msp/strings/lexicalcast.h>
-#include "except.h"
+#include <msp/strings/utils.h>
+#include "error.h"
#include "vertexformat.h"
using namespace std;
namespace GL {
VertexFormat::VertexFormat():
- data(0)
+ count(0)
{ }
VertexFormat::VertexFormat(VertexComponent c):
- data(new unsigned char[8])
+ count(1)
{
- data[0]=1;
- data[1]=c;
+ components[0] = c;
}
-VertexFormat::VertexFormat(const VertexFormat &f):
- data(0)
+VertexFormat VertexFormat::operator,(VertexComponent c) const
{
- if(f.data)
- {
- data=new unsigned char[f.data[0]/8+8];
- memcpy(data, f.data, f.data[0]+1);
- }
-}
+ if(count>=MAX_COMPONENTS)
+ throw invalid_operation("VertexFormat::operator,");
-VertexFormat &VertexFormat::operator=(const VertexFormat &f)
-{
- delete[] data;
- if(f.data)
- {
- data=new unsigned char[f.data[0]/8+8];
- memcpy(data, f.data, f.data[0]+1);
- }
- else
- data=0;
+ VertexFormat r = *this;
+ r.components[r.count++] = c;
- return *this;
+ return r;
}
-VertexFormat::~VertexFormat()
+VertexFormat VertexFormat::operator,(unsigned i) const
{
- delete[] data;
+ if(!count)
+ throw invalid_operation("VertexFormat::operator,");
+
+ VertexFormat r = *this;
+ unsigned char *c = &r.components[r.count-1];
+ *c = make_indexed_component(static_cast<VertexComponent>(*c), i);
+
+ return r;
}
unsigned VertexFormat::stride() const
{
- unsigned s=0;
+ unsigned s = 0;
for(const unsigned char *i=begin(); i!=end(); ++i)
- s+=(*i&3)+1;
+ s += get_component_size(*i);
return s;
}
-VertexFormat operator,(const VertexFormat &f, VertexComponent c)
+int VertexFormat::offset(VertexComponent comp) const
{
- VertexFormat r=f;
- if(r.data)
+ unsigned type = get_component_type(comp);
+ unsigned size = get_component_size(comp);
+ unsigned offs = 0;
+ for(const unsigned char *i=begin(); i!=end(); ++i)
{
- const unsigned char n=++r.data[0];
- if((n&7)==7)
+ if(get_component_type(*i)==type)
{
- unsigned char *newdt=new unsigned char[n+9];
- memcpy(newdt, r.data, n);
- delete r.data;
- r.data=newdt;
+ if(get_component_size(*i)>=size)
+ return offs;
+ else
+ return -1;
}
- r.data[n]=c;
- }
- else
- {
- r.data=new unsigned char[8];
- r.data[0]=1;
- r.data[1]=c;
+ else
+ offs += get_component_size(*i);
}
- return r;
+ return -1;
}
-VertexFormat operator,(const VertexFormat &f, unsigned i)
+VertexComponent make_indexed_component(VertexComponent comp, unsigned index)
{
- if(!f.data)
- throw InvalidState("VertexFormat has no components");
- VertexFormat r=f;
- unsigned char *c=r.data+r.data[0];
- if(*c<ATTRIB1)
- throw InvalidState("Last component is not a generic attribute");
- // VertexArray uses an unsigned to store flags for enabled arrays
- if(i>=28)
- throw InvalidParameterValue("Generic attribute index out of range");
- *c+=i*4;
-
- return r;
+ if(comp>=TEXCOORD1 && comp<=TEXCOORD4)
+ {
+ if(index>=4)
+ throw out_of_range("make_indexed_component");
+ }
+ else if(comp>=ATTRIB1 && comp<=ATTRIB4)
+ {
+ if(index>=24)
+ throw out_of_range("make_indexed_component");
+ }
+ else
+ throw invalid_argument("make_indexed_component");
+ return static_cast<VertexComponent>(comp+index*4);
}
-istream &operator>>(istream &in, VertexFormat &f)
+void operator>>(const LexicalConverter &conv, VertexComponent &c)
{
- string str;
- in>>str;
-
- unsigned start=0;
-
- while(1)
+ const string &str = conv.get();
+ if(str.size()==7 && !str.compare(0, 6, "VERTEX") && str[6]>='2' && str[6]<='4')
+ c = static_cast<VertexComponent>(VERTEX2+(str[6]-'2'));
+ else if(str=="NORMAL3")
+ c = NORMAL3;
+ else if(str.size()==12 && !str.compare(0, 5, "COLOR") && str[5]>='3' && str[5]<='4' && !str.compare(6, 6, "_FLOAT"))
+ c = static_cast<VertexComponent>(COLOR3_FLOAT+(str[5]-'3'));
+ else if(str=="COLOR4_UBYTE")
+ c = COLOR4_UBYTE;
+ else if(str=="TANGENT3")
+ c = TANGENT3;
+ else if(str=="BINORMAL3")
+ c = BINORMAL3;
+ else if(str.size()>=9 && !str.compare(0, 8, "TEXCOORD") && str[8]>='1' && str[8]<='4')
{
- string::size_type underscore=str.find('_', start);
- bool fail=false;
- if(!str.compare(start, underscore-start, "VERTEX2"))
- f=(f,VERTEX2);
- else if(!str.compare(start, underscore-start, "VERTEX3"))
- f=(f,VERTEX3);
- else if(!str.compare(start, underscore-start, "VERTEX4"))
- f=(f,VERTEX4);
- else if(!str.compare(start, underscore-start, "NORMAL3"))
- f=(f,NORMAL3);
- else if(!str.compare(start, underscore-start, "TEXCOORD1"))
- f=(f,TEXCOORD1);
- else if(!str.compare(start, underscore-start, "TEXCOORD2"))
- f=(f,TEXCOORD2);
- else if(!str.compare(start, underscore-start, "TEXCOORD3"))
- f=(f,TEXCOORD3);
- else if(!str.compare(start, underscore-start, "TEXCOORD4"))
- f=(f,TEXCOORD4);
- else if(!str.compare(start, underscore-start, "COLOR4UB"))
- f=(f,COLOR4_UBYTE);
- else if(!str.compare(start, underscore-start, "COLOR3F"))
- f=(f,COLOR3_FLOAT);
- else if(!str.compare(start, underscore-start, "COLOR4F"))
- f=(f,COLOR4_FLOAT);
- else if(underscore>=start+8 && !str.compare(start, 6, "ATTRIB"))
+ if(str.size()==9)
+ c = static_cast<VertexComponent>(TEXCOORD1+(str[8]-'1'));
+ else if(str.size()==11 && str[9]=='_' && str[10]>='0' && str[10]<='7')
+ c = static_cast<VertexComponent>(TEXCOORD1+(str[8]-'1')+(str[10]-'0')*4);
+ else
+ throw lexical_error(format("conversion of '%s' to VertexComponent", str));
+ }
+ else if(str.size()>=9 && !str.compare(0, 6, "ATTRIB") && str[6]>='1' && str[6]<='4' && str[7]=='_')
+ {
+ unsigned n;
+ try
{
- try
- {
- char n=str[start+6];
- unsigned i=lexical_cast<unsigned>(str.substr(start+7, underscore-start-7));
- if(n=='1')
- f=(f,ATTRIB1,i);
- else if(n=='2')
- f=(f,ATTRIB2,i);
- else if(n=='3')
- f=(f,ATTRIB3,i);
- else if(n=='4')
- f=(f,ATTRIB4,i);
- else
- fail=true;
- }
- catch(const LexicalError &)
- {
- fail=true;
- }
+ n = lexical_cast<unsigned>(str.substr(8));
}
- else
- fail=true;
-
- if(fail)
+ catch(const lexical_error &)
{
- in.setstate(ios_base::failbit);
- break;
+ throw lexical_error(format("conversion of '%s' to VertexComponent", str));
}
-
- if(underscore==string::npos)
- break;
- start=underscore+1;
+ c = static_cast<VertexComponent>(ATTRIB1+(str[6]-'1')+n*4);
}
-
- return in;
+ else
+ throw lexical_error(format("conversion of '%s' to VertexComponent", str));
}
} // namespace GL
projects / libs / gl.git / blobdiff