+VertexFormat::VertexFormat():
+ data(0)
+{ }
+
+VertexFormat::VertexFormat(VertexComponent c):
+ data(new unsigned char[8])
+{
+ data[0] = 1;
+ data[1] = c;
+}
+
+VertexFormat::VertexFormat(const VertexFormat &f):
+ data(0)
+{
+ if(f.data)
+ {
+ data = new unsigned char[(f.data[0]&~7)+8];
+ memcpy(data, f.data, f.data[0]+1);
+ }
+}
+
+VertexFormat &VertexFormat::operator=(const VertexFormat &f)
+{
+ delete[] data;
+ if(f.data)
+ {
+ data = new unsigned char[(f.data[0]&~7)+8];
+ memcpy(data, f.data, f.data[0]+1);
+ }
+ else
+ data = 0;
+
+ return *this;
+}
+
+VertexFormat::~VertexFormat()
+{
+ delete[] data;
+}
+
+unsigned VertexFormat::stride() const
+{
+ unsigned s = 0;
+ for(const unsigned char *i=begin(); i!=end(); ++i)
+ s += (*i&3)+1;
+ return s;
+}
+
+VertexFormat operator,(const VertexFormat &f, VertexComponent c)
+{
+ VertexFormat r = f;
+ if(r.data)
+ {
+ const unsigned char n = ++r.data[0];
+ if((n&7)==7)
+ {
+ unsigned char *newdt = new unsigned char[n+9];
+ memcpy(newdt, r.data, n);
+ delete r.data;
+ r.data = newdt;
+ }
+ r.data[n] = c;
+ }
+ else
+ {
+ r.data = new unsigned char[8];
+ r.data[0] = 1;
+ r.data[1] = c;
+ }
+
+ return r;
+}
+
+VertexFormat operator,(const VertexFormat &f, unsigned i)