nuclear@54: /*
nuclear@54: goat3d - 3D scene, character, and animation file format library.
nuclear@54: Copyright (C) 2013-2014  John Tsiombikas <nuclear@member.fsf.org>
nuclear@54: 
nuclear@54: This program is free software: you can redistribute it and/or modify
nuclear@54: it under the terms of the GNU Lesser General Public License as published by
nuclear@54: the Free Software Foundation, either version 3 of the License, or
nuclear@54: (at your option) any later version.
nuclear@54: 
nuclear@54: This program is distributed in the hope that it will be useful,
nuclear@54: but WITHOUT ANY WARRANTY; without even the implied warranty of
nuclear@54: MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
nuclear@54: GNU Lesser General Public License for more details.
nuclear@54: 
nuclear@54: You should have received a copy of the GNU Lesser General Public License
nuclear@54: along with this program.  If not, see <http://www.gnu.org/licenses/>.
nuclear@54: */
nuclear@14: #include <stdarg.h>
nuclear@0: #include "goat3d.h"
nuclear@0: #include "goat3d_impl.h"
nuclear@9: #include "chunk.h"
nuclear@0: 
nuclear@47: using namespace g3dimpl;
nuclear@47: 
nuclear@0: Scene::Scene()
nuclear@0: 	: name("unnamed"), ambient(0.05, 0.05, 0.05)
nuclear@0: {
nuclear@0: }
nuclear@0: 
nuclear@0: Scene::~Scene()
nuclear@0: {
nuclear@0: 	clear();
nuclear@0: }
nuclear@0: 
nuclear@0: void Scene::clear()
nuclear@0: {
nuclear@0: 	for(size_t i=0; i<materials.size(); i++) {
nuclear@0: 		delete materials[i];
nuclear@0: 	}
nuclear@0: 	materials.clear();
nuclear@0: 
nuclear@0: 	for(size_t i=0; i<meshes.size(); i++) {
nuclear@0: 		delete meshes[i];
nuclear@0: 	}
nuclear@0: 	meshes.clear();
nuclear@0: 
nuclear@0: 	for(size_t i=0; i<lights.size(); i++) {
nuclear@0: 		delete lights[i];
nuclear@0: 	}
nuclear@0: 	lights.clear();
nuclear@0: 
nuclear@0: 	for(size_t i=0; i<cameras.size(); i++) {
nuclear@0: 		delete cameras[i];
nuclear@0: 	}
nuclear@0: 	cameras.clear();
nuclear@0: 
nuclear@12: 	for(size_t i=0; i<nodes.size(); i++) {
nuclear@12: 		delete_node_tree(nodes[i]);
nuclear@0: 	}
nuclear@12: 	nodes.clear();
nuclear@0: 
nuclear@0: 	name = "unnamed";
nuclear@0: }
nuclear@0: 
nuclear@0: void Scene::set_name(const char *name)
nuclear@0: {
nuclear@0: 	this->name = name;
nuclear@0: }
nuclear@0: 
nuclear@0: const char *Scene::get_name() const
nuclear@0: {
nuclear@0: 	return name.c_str();
nuclear@0: }
nuclear@8: 
nuclear@8: void Scene::set_ambient(const Vector3 &amb)
nuclear@8: {
nuclear@8: 	ambient = amb;
nuclear@8: }
nuclear@8: 
nuclear@8: const Vector3 &Scene::get_ambient() const
nuclear@8: {
nuclear@8: 	return ambient;
nuclear@8: }
nuclear@8: 
nuclear@8: void Scene::add_material(Material *mat)
nuclear@8: {
nuclear@17: 	if(mat->name.empty()) {
nuclear@17: 		char buf[64];
nuclear@17: 		sprintf(buf, "material%04d", (int)materials.size());
nuclear@17: 		mat->name = std::string(buf);
nuclear@17: 	}
nuclear@8: 	materials.push_back(mat);
nuclear@8: }
nuclear@8: 
nuclear@8: Material *Scene::get_material(int idx) const
nuclear@8: {
nuclear@8: 	return idx >=0 && idx < (int)materials.size() ? materials[idx] : 0;
nuclear@8: }
nuclear@8: 
nuclear@8: Material *Scene::get_material(const char *name) const
nuclear@8: {
nuclear@8: 	for(size_t i=0; i<materials.size(); i++) {
nuclear@8: 		if(materials[i]->name == std::string(name)) {
nuclear@8: 			return materials[i];
nuclear@8: 		}
nuclear@8: 	}
nuclear@8: 	return 0;
nuclear@8: }
nuclear@8: 
nuclear@9: int Scene::get_material_count() const
nuclear@9: {
nuclear@9: 	return (int)materials.size();
nuclear@9: }
nuclear@9: 
nuclear@9: 
nuclear@8: void Scene::add_mesh(Mesh *mesh)
nuclear@8: {
nuclear@17: 	if(mesh->name.empty()) {
nuclear@17: 		char buf[64];
nuclear@17: 		sprintf(buf, "mesh%04d", (int)meshes.size());
nuclear@17: 		mesh->name = std::string(buf);
nuclear@17: 	}
nuclear@8: 	meshes.push_back(mesh);
nuclear@8: }
nuclear@8: 
nuclear@8: Mesh *Scene::get_mesh(int idx) const
nuclear@8: {
nuclear@8: 	return idx >= 0 && idx < (int)meshes.size() ? meshes[idx] : 0;
nuclear@8: }
nuclear@8: 
nuclear@8: Mesh *Scene::get_mesh(const char *name) const
nuclear@8: {
nuclear@8: 	for(size_t i=0; i<meshes.size(); i++) {
nuclear@8: 		if(meshes[i]->name == std::string(name)) {
nuclear@8: 			return meshes[i];
nuclear@8: 		}
nuclear@8: 	}
nuclear@8: 	return 0;
nuclear@8: }
nuclear@8: 
nuclear@9: int Scene::get_mesh_count() const
nuclear@9: {
nuclear@9: 	return (int)meshes.size();
nuclear@9: }
nuclear@9: 
nuclear@9: 
nuclear@8: void Scene::add_light(Light *light)
nuclear@8: {
nuclear@8: 	lights.push_back(light);
nuclear@8: }
nuclear@8: 
nuclear@8: Light *Scene::get_light(int idx) const
nuclear@8: {
nuclear@8: 	return idx >= 0 && idx < (int)lights.size() ? lights[idx] : 0;
nuclear@8: }
nuclear@8: 
nuclear@8: Light *Scene::get_light(const char *name) const
nuclear@8: {
nuclear@8: 	for(size_t i=0; i<lights.size(); i++) {
nuclear@8: 		if(lights[i]->name == std::string(name)) {
nuclear@8: 			return lights[i];
nuclear@8: 		}
nuclear@8: 	}
nuclear@8: 	return 0;
nuclear@8: }
nuclear@8: 
nuclear@9: int Scene::get_light_count() const
nuclear@9: {
nuclear@9: 	return (int)lights.size();
nuclear@9: }
nuclear@9: 
nuclear@9: 
nuclear@8: void Scene::add_camera(Camera *cam)
nuclear@8: {
nuclear@8: 	cameras.push_back(cam);
nuclear@8: }
nuclear@8: 
nuclear@8: Camera *Scene::get_camera(int idx) const
nuclear@8: {
nuclear@8: 	return idx >= 0 && idx < (int)cameras.size() ? cameras[idx] : 0;
nuclear@8: }
nuclear@8: 
nuclear@8: Camera *Scene::get_camera(const char *name) const
nuclear@8: {
nuclear@8: 	for(size_t i=0; i<cameras.size(); i++) {
nuclear@8: 		if(cameras[i]->name == std::string(name)) {
nuclear@8: 			return cameras[i];
nuclear@8: 		}
nuclear@8: 	}
nuclear@8: 	return 0;
nuclear@8: }
nuclear@8: 
nuclear@9: int Scene::get_camera_count() const
nuclear@9: {
nuclear@9: 	return (int)cameras.size();
nuclear@9: }
nuclear@9: 
nuclear@9: 
nuclear@8: void Scene::add_node(Node *node)
nuclear@8: {
nuclear@8: 	nodes.push_back(node);
nuclear@8: }
nuclear@8: 
nuclear@8: Node *Scene::get_node(int idx) const
nuclear@8: {
nuclear@8: 	return idx >= 0 && idx < (int)nodes.size() ? nodes[idx] : 0;
nuclear@8: }
nuclear@8: 
nuclear@8: Node *Scene::get_node(const char *name) const
nuclear@8: {
nuclear@8: 	for(size_t i=0; i<nodes.size(); i++) {
nuclear@8: 		if(strcmp(nodes[i]->get_name(), name) == 0) {
nuclear@8: 			return nodes[i];
nuclear@8: 		}
nuclear@8: 	}
nuclear@8: 	return 0;
nuclear@8: }
nuclear@8: 
nuclear@9: int Scene::get_node_count() const
nuclear@9: {
nuclear@9: 	return (int)nodes.size();
nuclear@9: }
nuclear@9: 
nuclear@50: // Scene::load is defined in goat3d_read.cc
nuclear@19: // Scene::loadxml is defined in goat3d_readxml.cc
nuclear@14: // Scene::save is defined in goat3d_write.cc
nuclear@19: // Scene::savexml is defined in goat3d_writexml.cc
nuclear@9: 
nuclear@9: 
nuclear@47: void g3dimpl::io_fprintf(goat3d_io *io, const char *fmt, ...)
nuclear@8: {
nuclear@14: 	va_list ap;
nuclear@9: 
nuclear@14: 	va_start(ap, fmt);
nuclear@14: 	io_vfprintf(io, fmt, ap);
nuclear@14: 	va_end(ap);
nuclear@14: }
nuclear@9: 
nuclear@9: 
nuclear@47: void g3dimpl::io_vfprintf(goat3d_io *io, const char *fmt, va_list ap)
nuclear@14: {
nuclear@14: 	char smallbuf[256];
nuclear@14: 	char *buf = smallbuf;
nuclear@14: 	int sz = sizeof smallbuf;
nuclear@9: 
nuclear@14: 	int retsz = vsnprintf(buf, sz - 1, fmt, ap);
nuclear@9: 
nuclear@14: 	if(retsz >= sz) {
nuclear@14: 		/* C99 mandates that snprintf with a short count should return the
nuclear@14: 		 * number of characters that *would* be printed.
nuclear@14: 		 */
nuclear@14: 		buf = new char[retsz + 1];
nuclear@9: 
nuclear@14: 		vsnprintf(buf, retsz, fmt, ap);
nuclear@9: 
nuclear@14: 	} else if(retsz <= 0) {
nuclear@14: 		/* SUSv2 and microsoft specify that snprintf with a short count
nuclear@14: 		 * returns an arbitrary value <= 0. So let's try allocating
nuclear@14: 		 * bigger and bigger arrays until we find the correct size.
nuclear@14: 		 */
nuclear@14: 		sz = sizeof smallbuf;
nuclear@14: 		do {
nuclear@14: 			sz *= 2;
nuclear@14: 			if(buf != smallbuf) {
nuclear@14: 				delete [] buf;
nuclear@14: 			}
nuclear@14: 			buf = new char[sz + 1];
nuclear@9: 
nuclear@14: 			retsz = vsnprintf(buf, sz, fmt, ap);
nuclear@14: 		} while(retsz <= 0);
nuclear@9: 	}
nuclear@9: 
nuclear@15: 	io->write(buf, retsz, io->cls);
nuclear@9: 
nuclear@14: 	if(buf != smallbuf) {
nuclear@14: 		delete [] buf;
nuclear@9: 	}
nuclear@9: 
nuclear@9: }