--- /dev/null
+#include <msp/datafile/collection.h>
+#include <msp/strings/format.h>
+#include "error.h"
+#include "material.h"
+#include "mesh.h"
+#include "object.h"
+#include "objectinstance.h"
+#include "program.h"
+#include "programdata.h"
+#include "renderer.h"
+#include "resourcemanager.h"
+#include "technique.h"
+#include "texturing.h"
+
+using namespace std;
+
+namespace Msp {
+namespace GL {
+
+Matrix Object::identity_matrix;
+
+Object::Object():
+ lods(1),
+ lod0_watched(false)
+{ }
+
+Object::Object(const Mesh *m, const Technique *t):
+ lods(1),
+ lod0_watched(false)
+{
+ set_mesh(m);
+ set_technique(t);
+}
+
+// TODO should have copy-c'tor to set watch on lod0 mesh if necessary
+
+Object::~Object()
+{
+ if(lods[0].mesh && lod0_watched)
+ if(ResourceManager *rm = lods[0].mesh->get_manager())
+ rm->unobserve_resource(*lods[0].mesh, *this);
+}
+
+Object::LevelOfDetail &Object::get_lod(unsigned i, const char *caller)
+{
+ if(i>lods.size())
+ throw out_of_range(caller);
+ if(i>0 && (!lods[0].mesh || !lods[0].technique))
+ throw invalid_operation(caller);
+
+ if(i==lods.size())
+ lods.push_back(lods.back());
+
+ return lods[i];
+}
+
+void Object::set_mesh(unsigned i, const Mesh *m)
+{
+ RefPtr<const Mesh> &ptr = get_lod(i, "Object::set_mesh").mesh;
+ if(i==0 && ptr && lod0_watched)
+ if(ResourceManager *rm = ptr->get_manager())
+ rm->unobserve_resource(*ptr, *this);
+ ptr = m;
+ ptr.keep();
+ lod0_watched = false;
+
+ if(i==0 && m)
+ if(ResourceManager *rm = m->get_manager())
+ {
+ rm->observe_resource(*m, *this);
+ lod0_watched = true;
+ }
+
+ update_bounding_sphere();
+}
+
+void Object::update_bounding_sphere()
+{
+ vector<Vector3> points;
+ for(vector<LevelOfDetail>::const_iterator i=lods.begin(); i!=lods.end(); ++i)
+ {
+ if(!i->mesh || !i->mesh->is_loaded())
+ continue;
+
+ const VertexArray &vertices = i->mesh->get_vertices();
+
+ int offset = vertices.get_format().offset(VERTEX3);
+ bool three = true;
+ if(offset<0)
+ {
+ offset = vertices.get_format().offset(VERTEX2);
+ three = false;
+ if(offset<0)
+ continue;
+ }
+
+ unsigned n_vertices = vertices.size();
+ points.reserve(points.size()+n_vertices);
+ for(unsigned j=0; j<n_vertices; ++j)
+ {
+ const float *v = vertices[j];
+ points.push_back(Vector3(v[offset], v[offset+1], (three ? v[offset+2] : 0.0f)));
+ }
+ }
+
+ /* Don't touch the bounding sphere if we had no vertices to avoid
+ overwriting a possible hint. */
+ if(points.empty())
+ return;
+
+ bounding_sphere = Geometry::BoundingSphere<float, 3>::from_point_cloud(points.begin(), points.end());
+}
+
+const Mesh *Object::get_mesh(unsigned i) const
+{
+ if(i>=lods.size())
+ return 0;
+
+ return lods[i].mesh.get();
+}
+
+void Object::set_technique(unsigned i, const Technique *t)
+{
+ RefPtr<const Technique> &ptr = get_lod(i, "Object::set_technique").technique;
+ ptr = t;
+ ptr.keep();
+}
+
+const Technique *Object::get_technique(unsigned i) const
+{
+ if(i>=lods.size())
+ return 0;
+
+ return lods[i].technique.get();
+}
+
+void Object::render(Renderer &renderer, const Tag &tag) const
+{
+ const RenderPass *pass = get_pass(tag, 0);
+ if(!pass)
+ return;
+
+ const Mesh *mesh = lods.front().mesh.get();
+ if (!mesh)
+ throw logic_error("no mesh");
+
+ Renderer::Push push(renderer);
+ pass->apply(renderer);
+
+ setup_render(renderer, tag);
+ mesh->draw(renderer);
+ finish_render(renderer, tag);
+}
+
+void Object::render(Renderer &renderer, const ObjectInstance &inst, const Tag &tag) const
+{
+ unsigned lod = min<unsigned>(inst.get_level_of_detail(renderer), lods.size()-1);
+ const RenderPass *pass = get_pass(tag, lod);
+ if(!pass)
+ return;
+
+ const Mesh *mesh = lods[lod].mesh.get();
+ if (!mesh)
+ throw logic_error("no mesh");
+
+ Renderer::Push push(renderer);
+ pass->apply(renderer);
+
+ setup_render(renderer, tag);
+ inst.setup_render(renderer, tag);
+ mesh->draw(renderer);
+ inst.finish_render(renderer, tag);
+ finish_render(renderer, tag);
+}
+
+const RenderPass *Object::get_pass(const Tag &tag, unsigned lod) const
+{
+ const Technique *tech = lods[lod].technique.get();
+ if(!tech)
+ throw logic_error("no technique");
+ return tech->find_pass(tag);
+}
+
+void Object::resource_loaded(Resource &res)
+{
+ if(&res==lods.front().mesh.get() && bounding_sphere.is_empty())
+ update_bounding_sphere();
+}
+
+void Object::resource_removed(Resource &res)
+{
+ if(&res==lods.front().mesh.get())
+ lod0_watched = false;
+}
+
+
+Object::Loader::Loader(Object &o):
+ LodLoader(o, 0, 0)
+{
+ init();
+}
+
+Object::Loader::Loader(Object &o, Collection &c):
+ LodLoader(o, 0, &c)
+{
+ init();
+}
+
+void Object::Loader::init()
+{
+ add("bounding_sphere_hint", &Loader::bounding_sphere_hint);
+ add("level_of_detail", &Loader::level_of_detail);
+}
+
+void Object::Loader::finish()
+{
+ obj.update_bounding_sphere();
+}
+
+void Object::Loader::bounding_sphere_hint(float x, float y, float z, float r)
+{
+ obj.bounding_sphere = Geometry::BoundingSphere<float, 3>(Vector3(x, y, z), r);
+}
+
+void Object::Loader::level_of_detail(unsigned i)
+{
+ LodLoader ldr(obj, i, coll);
+ load_sub_with(ldr);
+}
+
+
+Object::LodLoader::LodLoader(Object &o, unsigned i, Collection *c):
+ DataFile::CollectionObjectLoader<Object>(o, c),
+ index(i),
+ lod(obj.get_lod(index, "Object::LodLoader::LodLoader"))
+{
+ add("mesh", &LodLoader::mesh_inline);
+ add("mesh", &LodLoader::mesh);
+ add("technique", &LodLoader::technique_inline);
+ add("technique", &LodLoader::technique);
+}
+
+void Object::LodLoader::mesh(const string &n)
+{
+ obj.set_mesh(index, &get_collection().get<Mesh>(n));
+}
+
+void Object::LodLoader::mesh_inline()
+{
+ RefPtr<Mesh> msh = new Mesh;
+ load_sub(*msh);
+ lod.mesh = msh;
+}
+
+void Object::LodLoader::technique(const std::string &n)
+{
+ obj.set_technique(index, &get_collection().get<Technique>(n));
+}
+
+void Object::LodLoader::technique_inline()
+{
+ RefPtr<Technique> tech = new Technique;
+ if(coll)
+ load_sub(*tech, get_collection());
+ else
+ load_sub(*tech);
+ lod.technique = tech;
+}
+
+} // namespace GL
+} // namespace Msp
projects / libs / gl.git / blobdiff