Distributed under the LGPL
*/
+#include "buffer.h"
#include "mesh.h"
using namespace std;
namespace GL {
Mesh::Mesh():
- vertices(VERTEX3)
+ vertices(VERTEX3),
+ ibuf(0)
{ }
-Mesh::Mesh(VertexFormat f):
- vertices(f)
+Mesh::Mesh(const VertexFormat &f):
+ vertices(f),
+ ibuf(0)
{ }
void Mesh::use_vertex_buffer(bool b)
{
if(b)
+ {
vertices.use_vertex_buffer();
+ if(!ibuf)
+ ibuf = new Buffer(ELEMENT_ARRAY_BUFFER);
+ update_index_buffer();
+ }
else
+ {
vertices.use_vertex_buffer(0);
+ delete ibuf;
+ ibuf = 0;
+ }
+}
+
+float *Mesh::get_vertex(unsigned i)
+{
+ return vertices[i];
}
void Mesh::add_batch(const Batch &b)
{
batches.push_back(b);
+ update_index_buffer();
}
void Mesh::clear()
void Mesh::draw() const
{
vertices.apply();
+ if(ibuf)
+ {
+ ibuf->bind();
+ unsigned offset = 0;
+ for(list<Batch>::const_iterator i=batches.begin(); i!=batches.end(); ++i)
+ {
+ i->draw_with_buffer(offset);
+ offset += i->size();
+ }
+ ibuf->unbind();
+ }
+ else
+ {
+ for(list<Batch>::const_iterator i=batches.begin(); i!=batches.end(); ++i)
+ i->draw();
+ }
+}
+
+void Mesh::update_index_buffer()
+{
+ if(!ibuf)
+ return;
+
+ unsigned total = 0;
+ for(list<Batch>::const_iterator i=batches.begin(); i!=batches.end(); ++i)
+ total += i->size();
+
+ ibuf->data(total*sizeof(unsigned), 0);
+ unsigned offset = 0;
for(list<Batch>::const_iterator i=batches.begin(); i!=batches.end(); ++i)
- i->draw();
+ {
+ ibuf->sub_data(offset*sizeof(unsigned), i->size()*sizeof(unsigned), &i->get_indices()[0]);
+ offset += i->size();
+ }
+ ibuf->unbind();
}
Mesh::Loader::Loader(Mesh &m):
- mesh(m)
+ DataFile::ObjectLoader<Mesh>(m)
{
add("vertices", &Loader::vertices);
add("batch", &Loader::batch);
void Mesh::Loader::vertices(VertexFormat f)
{
- mesh.vertices.reset(f);
- load_sub(mesh.vertices);
+ obj.vertices.reset(f);
+ load_sub(obj.vertices);
}
void Mesh::Loader::batch(PrimitiveType p)
{
- mesh.batches.push_back(Batch(p));
- load_sub(mesh.batches.back());
+ obj.batches.push_back(Batch(p));
+ load_sub(obj.batches.back());
}
} // namespace GL