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 "goat3d_impl.h"
nuclear@14: #include "chunk.h"
nuclear@14: 
nuclear@47: using namespace g3dimpl;
nuclear@47: 
nuclear@14: /*
nuclear@14: static long save_env(const Scene *scn, long offset, goat3d_io *io);
nuclear@14: static long save_materials(const Scene *scn, long offset, goat3d_io *io);
nuclear@14: static long save_material(const Material *mat, long offset, goat3d_io *io);
nuclear@14: static long save_mat_attrib(const char *name, const MaterialAttrib &attr, long offset, goat3d_io *io);
nuclear@14: static long save_meshes(const Scene *scn, long offset, goat3d_io *io);
nuclear@14: static long save_lights(const Scene *scn, long offset, goat3d_io *io);
nuclear@14: static long save_cameras(const Scene *scn, long offset, goat3d_io *io);
nuclear@14: static long save_nodes(const Scene *scn, long offset, goat3d_io *io);
nuclear@14: 
nuclear@14: static long write_chunk_float(int id, float val, long offs, goat3d_io *io);
nuclear@14: static long write_chunk_float3(int id, const Vector3 &vec, long offs, goat3d_io *io);
nuclear@14: static long write_chunk_float4(int id, const Vector4 &vec, long offs, goat3d_io *io);
nuclear@14: */
nuclear@14: 
nuclear@14: bool Scene::save(goat3d_io *io) const
nuclear@14: {
nuclear@14: 	/*
nuclear@14: 	long res;
nuclear@14: 
nuclear@14: 	ChunkHeader hdr;
nuclear@14: 	hdr.id = CNK_SCENE;
nuclear@14: 	hdr.size = sizeof hdr;
nuclear@14: 
nuclear@14: 	if((res = save_env(this, hdr.size, io)) < 0) {
nuclear@14: 		return false;
nuclear@14: 	}
nuclear@14: 	hdr.size += res;
nuclear@14: 
nuclear@14: 	if((res = save_materials(this, hdr.size, io)) < 0) {
nuclear@14: 		return false;
nuclear@14: 	}
nuclear@14: 	hdr.size += res;
nuclear@14: 
nuclear@14: 	if((res = save_meshes(this, hdr.size, io)) < 0) {
nuclear@14: 		return false;
nuclear@14: 	}
nuclear@14: 	hdr.size += res;
nuclear@14: 
nuclear@14: 	if((res = save_lights(this, hdr.size, io)) < 0) {
nuclear@14: 		return false;
nuclear@14: 	}
nuclear@14: 	hdr.size += res;
nuclear@14: 
nuclear@14: 	if((res = save_cameras(this, hdr.size, io)) < 0) {
nuclear@14: 		return false;
nuclear@14: 	}
nuclear@14: 	hdr.size += res;
nuclear@14: 
nuclear@14: 	if((res = save_nodes(this, hdr.size, io)) < 0) {
nuclear@14: 		return false;
nuclear@14: 	}
nuclear@14: 	hdr.size += res;
nuclear@14: 
nuclear@14: 	// now go back and write the root chunk
nuclear@14: 	io->seek(0, SEEK_SET, io->cls);
nuclear@14: 	if(io->write(&hdr, sizeof hdr, io->cls) < (ssize_t)sizeof hdr) {
nuclear@14: 		return false;
nuclear@14: 	}
nuclear@14: 
nuclear@14: 	return true;
nuclear@14: 	*/
nuclear@14: 	return false;
nuclear@14: }
nuclear@14: 
nuclear@55: bool Scene::save_anim(goat3d_io *io) const
nuclear@51: {
nuclear@51: 	return false;
nuclear@51: }
nuclear@51: 
nuclear@14: 
nuclear@14: #if 0
nuclear@14: static long save_env(const Scene *scn, long offset, goat3d_io *io)
nuclear@14: {
nuclear@14: 	long res;
nuclear@14: 
nuclear@14: 	ChunkHeader hdr;
nuclear@14: 	hdr.id = CNK_ENV;
nuclear@14: 	hdr.size = sizeof hdr;
nuclear@14: 
nuclear@14: 	if((res = write_chunk_float3(CNK_ENV_AMBIENT, scn->get_ambient(), offset, io)) < 0) {
nuclear@14: 		return -1;
nuclear@14: 	}
nuclear@14: 	hdr.size += res;
nuclear@14: 
nuclear@14: 	// TODO add fog chunk
nuclear@14: 
nuclear@14: 	io->seek(offset, SEEK_SET, io->cls);
nuclear@14: 	if(io->write(&hdr, sizeof hdr, io->cls) < (ssize_t)sizeof hdr) {
nuclear@14: 		return -1;
nuclear@14: 	}
nuclear@14: 	return hdr.size;
nuclear@14: }
nuclear@14: 
nuclear@14: static long save_materials(const Scene *scn, long offset, goat3d_io *io)
nuclear@14: {
nuclear@14: 	long res;
nuclear@14: 
nuclear@14: 	ChunkHeader hdr;
nuclear@14: 	hdr.id = CNK_MTL_LIST;
nuclear@14: 	hdr.size = sizeof hdr;
nuclear@14: 
nuclear@14: 	for(int i=0; i<scn->get_material_count(); i++) {
nuclear@14: 		if((res = save_material(scn->get_material(i), offset + hdr.size, io)) < 0) {
nuclear@14: 			return -1;
nuclear@14: 		}
nuclear@14: 		hdr.size += res;
nuclear@14: 	}
nuclear@14: 
nuclear@14: 	io->seek(offset, SEEK_SET, io->cls);
nuclear@14: 	if(io->write(&hdr, hdr.size, io->cls) < hdr.size) {
nuclear@14: 		return -1;
nuclear@14: 	}
nuclear@14: 	return hdr.size;
nuclear@14: }
nuclear@14: 
nuclear@14: static long save_material(const Material *mat, long offset, goat3d_io *io)
nuclear@14: {
nuclear@14: 	long res;
nuclear@14: 
nuclear@14: 	ChunkHeader hdr;
nuclear@14: 	hdr.id = CNK_MTL;
nuclear@14: 	hdr.size = sizeof hdr;
nuclear@14: 
nuclear@14: 	for(int i=0; i<mat->get_attrib_count(); i++) {
nuclear@14: 		const char *name = mat->get_attrib_name(i);
nuclear@14: 		if((res = save_mat_attrib(name, (*mat)[i], offset + hdr.size, io)) < 0) {
nuclear@14: 			return -1;
nuclear@14: 		}
nuclear@14: 		hdr.size += res;
nuclear@14: 	}
nuclear@14: 
nuclear@14: 	io->seek(offset, SEEK_SET, io->cls);
nuclear@14: 	if(io->write(&hdr, hdr.size, io->cls) < hdr.size) {
nuclear@14: 		return -1;
nuclear@14: 	}
nuclear@14: 	return hdr.size;
nuclear@14: }
nuclear@14: 
nuclear@14: static long save_mat_attrib(const char *name, const MaterialAttrib &attr, long offset, goat3d_io *io)
nuclear@14: {
nuclear@14: 	long res;
nuclear@14: 
nuclear@14: 	ChunkHeader hdr;
nuclear@14: 	hdr.id = CNK_MTL_ATTR;
nuclear@14: 	hdr.size = sizeof hdr;
nuclear@14: 
nuclear@14: 	// TODO cont.
nuclear@14: 	return -1;
nuclear@14: }
nuclear@14: 
nuclear@14: static long save_meshes(const Scene *scn, long offset, goat3d_io *io)
nuclear@14: {
nuclear@14: 	return 0;
nuclear@14: }
nuclear@14: 
nuclear@14: static long save_lights(const Scene *scn, long offset, goat3d_io *io)
nuclear@14: {
nuclear@14: 	return 0;
nuclear@14: }
nuclear@14: 
nuclear@14: static long save_cameras(const Scene *scn, long offset, goat3d_io *io)
nuclear@14: {
nuclear@14: 	return 0;
nuclear@14: }
nuclear@14: 
nuclear@14: static long save_nodes(const Scene *scn, long offset, goat3d_io *io)
nuclear@14: {
nuclear@14: 	return 0;
nuclear@14: }
nuclear@14: 
nuclear@14: static long write_chunk_float(int id, float val, long offs, goat3d_io *io)
nuclear@14: {
nuclear@14: 	int size = sizeof(ChunkHeader) + sizeof val;
nuclear@14: 	char *buf = (char*)alloca(size);
nuclear@14: 
nuclear@14: 	Chunk *c = (Chunk*)buf;
nuclear@14: 	c->hdr.id = id;
nuclear@14: 	c->hdr.size = size;
nuclear@14: 	*(float*)c->data = val;
nuclear@14: 
nuclear@14: 	io->seek(offs, SEEK_SET, io->cls);
nuclear@14: 	if(io->write(buf, size, io->cls) < size) {
nuclear@14: 		return -1;
nuclear@14: 	}
nuclear@14: 	return size;
nuclear@14: }
nuclear@14: 
nuclear@14: static long write_chunk_float3(int id, const Vector3 &vec, long offs, goat3d_io *io)
nuclear@14: {
nuclear@14: 	int size = sizeof(ChunkHeader) + sizeof vec;
nuclear@14: 	char *buf = (char*)alloca(size);
nuclear@14: 
nuclear@14: 	Chunk *c = (Chunk*)buf;
nuclear@14: 	c->hdr.id = id;
nuclear@14: 	c->hdr.size = size;
nuclear@14: 	*(Vector3*)c->data = vec;
nuclear@14: 
nuclear@14: 	io->seek(offs, SEEK_SET, io->cls);
nuclear@14: 	if(io->write(buf, size, io->cls) < size) {
nuclear@14: 		return -1;
nuclear@14: 	}
nuclear@14: 	return size;
nuclear@14: }
nuclear@14: 
nuclear@14: static long write_chunk_float4(int id, const Vector4 &vec, long offs, goat3d_io *io)
nuclear@14: {
nuclear@14: 	int size = sizeof(ChunkHeader) + sizeof vec;
nuclear@14: 	char *buf = (char*)alloca(size);
nuclear@14: 
nuclear@14: 	Chunk *c = (Chunk*)buf;
nuclear@14: 	c->hdr.id = id;
nuclear@14: 	c->hdr.size = size;
nuclear@14: 	*(Vector4*)c->data = vec;
nuclear@14: 
nuclear@14: 	io->seek(offs, SEEK_SET, io->cls);
nuclear@14: 	if(io->write(buf, size, io->cls) < size) {
nuclear@14: 		return -1;
nuclear@14: 	}
nuclear@14: 	return size;
nuclear@14: }
nuclear@14: #endif