/*!
* Load the model from .3ds file.
*/
static void
load_model(void)
{
file=lib3ds_file_load(filepath);
if (!file) {
puts("3dsplayer: Error: Loading 3DS file failed.\n");
exit(1);
}
/* No nodes? Fabricate nodes to display all the meshes. */
if( !file->nodes )
{
Lib3dsMesh *mesh;
Lib3dsNode *node;
for(mesh = file->meshes; mesh != NULL; mesh = mesh->next)
{
node = lib3ds_node_new_object();
strcpy(node->name, mesh->name);
node->parent_id = LIB3DS_NO_PARENT;
lib3ds_file_insert_node(file, node);
}
}
lib3ds_file_eval(file, 1.0f);
lib3ds_file_bounding_box_of_nodes(file, LIB3DS_TRUE, LIB3DS_FALSE, LIB3DS_FALSE, bmin, bmax);
sx = bmax[0] - bmin[0];
sy = bmax[1] - bmin[1];
sz = bmax[2] - bmin[2];
size = MAX(sx, sy); size = MAX(size, sz);
cx = (bmin[0] + bmax[0])/2;
cy = (bmin[1] + bmax[1])/2;
cz = (bmin[2] + bmax[2])/2;
/* No cameras in the file? Add four */
if( !file->cameras ) {
/* Add some cameras that encompass the bounding box */
Lib3dsCamera *camera = lib3ds_camera_new("Camera_X");
camera->target[0] = cx;
camera->target[1] = cy;
camera->target[2] = cz;
memcpy(camera->position, camera->target, sizeof(camera->position));
camera->position[0] = bmax[0] + 1.5 * MAX(sy,sz);
camera->near_range = ( camera->position[0] - bmax[0] ) * .5;
camera->far_range = ( camera->position[0] - bmin[0] ) * 2;
lib3ds_file_insert_camera(file, camera);
/* Since lib3ds considers +Y to be into the screen, we'll put
* this camera on the -Y axis, looking in the +Y direction.
*/
camera = lib3ds_camera_new("Camera_Y");
camera->target[0] = cx;
camera->target[1] = cy;
camera->target[2] = cz;
memcpy(camera->position, camera->target, sizeof(camera->position));
camera->position[1] = bmin[1] - 1.5 * MAX(sx,sz);
camera->near_range = ( bmin[1] - camera->position[1] ) * .5;
camera->far_range = ( bmax[1] - camera->position[1] ) * 2;
lib3ds_file_insert_camera(file, camera);
camera = lib3ds_camera_new("Camera_Z");
camera->target[0] = cx;
camera->target[1] = cy;
camera->target[2] = cz;
memcpy(camera->position, camera->target, sizeof(camera->position));
camera->position[2] = bmax[2] + 1.5 * MAX(sx,sy);
camera->near_range = ( camera->position[2] - bmax[2] ) * .5;
camera->far_range = ( camera->position[2] - bmin[2] ) * 2;
lib3ds_file_insert_camera(file, camera);
camera = lib3ds_camera_new("Camera_ISO");
camera->target[0] = cx;
camera->target[1] = cy;
camera->target[2] = cz;
memcpy(camera->position, camera->target, sizeof(camera->position));
camera->position[0] = bmax[0] + .75 * size;
camera->position[1] = bmin[1] - .75 * size;
camera->position[2] = bmax[2] + .75 * size;
camera->near_range = ( camera->position[0] - bmax[0] ) * .5;
camera->far_range = ( camera->position[0] - bmin[0] ) * 3;
lib3ds_file_insert_camera(file, camera);
}
/* No lights in the file? Add some. */
if (file->lights == NULL)
{
Lib3dsLight *light;
light = lib3ds_light_new("light0");
light->spot_light = 0;
light->see_cone = 0;
light->color[0] = light->color[1] = light->color[2] = .6;
light->position[0] = cx + size * .75;
light->position[1] = cy - size * 1.;
light->position[2] = cz + size * 1.5;
light->position[3] = 0.;
light->outer_range = 100;
light->inner_range = 10;
light->multiplier = 1;
lib3ds_file_insert_light(file, light);
light = lib3ds_light_new("light1");
light->spot_light = 0;
light->see_cone = 0;
light->color[0] = light->color[1] = light->color[2] = .3;
light->position[0] = cx - size;
light->position[1] = cy - size;
light->position[2] = cz + size * .75;
light->position[3] = 0.;
light->outer_range = 100;
light->inner_range = 10;
light->multiplier = 1;
lib3ds_file_insert_light(file, light);
light = lib3ds_light_new("light2");
light->spot_light = 0;
light->see_cone = 0;
light->color[0] = light->color[1] = light->color[2] = .3;
light->position[0] = cx;
light->position[1] = cy + size;
light->position[2] = cz + size;
light->position[3] = 0.;
light->outer_range = 100;
light->inner_range = 10;
light->multiplier = 1;
lib3ds_file_insert_light(file, light);
}
if (!file->cameras) {
fputs("3dsplayer: Error: No Camera found.\n", stderr);
lib3ds_file_free(file);
file=0;
exit(1);
}
if (!camera) {
camera=file->cameras->name;
}
lib3ds_file_eval(file,0.);
}
// load the model, and if the texture has textures, then apply them on the geometric primitives
void Model::LoadFile(const char *name)
{
if(glIsEnabled(GL_LIGHTING))
lightEnabled = true;
else
lightEnabled = false;
filename = name;
// load file
file = lib3ds_file_load(filename);
if(!file) // if we were not able to load the file
{
// give some errors
string event = "Error loading: ";
event.append(filename);
cout << event << endl;
exit(1);
}
//Node:
/* No nodes? Fabricate nodes to display all the meshes. */
if( !file->nodes )
{
cout << "No node found"<< endl;
Lib3dsMesh *mesh;
Lib3dsNode *node;
for(mesh = file->meshes; mesh != NULL; mesh = mesh->next)
{
node = lib3ds_node_new_object();
strcpy(node->name, mesh->name);
node->parent_id = LIB3DS_NO_PARENT;
lib3ds_file_insert_node(file, node);
}
//goto Node;
}
static Lib3dsVector bmin, bmax;
static float sx, sy, sz, size; /* bounding box dimensions */
static float cx, cy, cz; /* bounding box center */
lib3ds_file_bounding_box_of_nodes(file, LIB3DS_TRUE, LIB3DS_FALSE, LIB3DS_FALSE, bmin, bmax);
sx = bmax[0] - bmin[0];
sy = bmax[1] - bmin[1];
sz = bmax[2] - bmin[2];
size = MAX(sx, sy); size = MAX(size, sz);
cx = (bmin[0] + bmax[0])/2;
cy = (bmin[1] + bmax[1])/2;
cz = (bmin[2] + bmax[2])/2;
lib3ds_file_eval(file, 0); // set current frame to 0
// apply texture to all meshes that have texels
if (file->lights == NULL)
{
Lib3dsLight *light;
light = lib3ds_light_new("light0");
light->spot_light = 0;
light->see_cone = 0;
light->color[0] = light->color[1] = light->color[2] = .6;
light->position[0] = cx + size * .75;
light->position[1] = cy - size * 1.;
light->position[2] = cz + size * 1.5;
light->position[3] = 0.;
light->outer_range = 100;
light->inner_range = 10;
light->multiplier = 1;
lib3ds_file_insert_light(file, light);
light = lib3ds_light_new("light1");
light->spot_light = 0;
light->see_cone = 0;
light->color[0] = light->color[1] = light->color[2] = .3;
light->position[0] = cx - size;
light->position[1] = cy - size;
light->position[2] = cz + size * .75;
light->position[3] = 0.;
light->outer_range = 100;
light->inner_range = 10;
light->multiplier = 1;
lib3ds_file_insert_light(file, light);
light = lib3ds_light_new("light2");
light->spot_light = 0;
light->see_cone = 0;
light->color[0] = light->color[1] = light->color[2] = .3;
light->position[0] = cx;
light->position[1] = cy + size;
light->position[2] = cz + size;
light->position[3] = 0.;
light->outer_range = 100;
light->inner_range = 10;
light->multiplier = 1;
lib3ds_file_insert_light(file, light);
}
Lib3dsMesh *mesh;
for(mesh = file->meshes;mesh != 0;mesh = mesh->next)
{
if(mesh->texels) //if there's texels for the mesh
ApplyTexture(mesh); //then apply texture to it
}
if(file->lights) //if we have lights in our model
CreateLightList();
}
/*!
* Load the model from .3ds file.
*/
static void
load_model(void) {
file = lib3ds_file_open(filepath);
if (!file) {
puts("3dsplayer: Error: Loading 3DS file failed.\n");
exit(1);
}
/* No nodes? Fabricate nodes to display all the meshes. */
if (!file->nodes) {
Lib3dsNode *node;
int i;
for (i = 0; i < file->nmeshes; ++i) {
Lib3dsMesh *mesh = file->meshes[i];
node = lib3ds_node_new(LIB3DS_NODE_MESH_INSTANCE);
strcpy(node->name, mesh->name);
lib3ds_file_insert_node(file, node, NULL);
}
}
lib3ds_file_eval(file, 0.0f);
lib3ds_file_bounding_box_of_nodes(file, 1, 0, 0, bmin, bmax, NULL);
sx = bmax[0] - bmin[0];
sy = bmax[1] - bmin[1];
sz = bmax[2] - bmin[2];
size = MAX(sx, sy);
size = MAX(size, sz);
cx = (bmin[0] + bmax[0]) / 2;
cy = (bmin[1] + bmax[1]) / 2;
cz = (bmin[2] + bmax[2]) / 2;
/* No cameras in the file? Add four */
if (!file->ncameras) {
/* Add some cameras that encompass the bounding box */
Lib3dsCamera *camera = lib3ds_camera_new("Camera_X");
camera->target[0] = cx;
camera->target[1] = cy;
camera->target[2] = cz;
memcpy(camera->position, camera->target, sizeof(camera->position));
camera->position[0] = bmax[0] + 1.5 * MAX(sy, sz);
camera->near_range = (camera->position[0] - bmax[0]) * .5;
camera->far_range = (camera->position[0] - bmin[0]) * 2;
lib3ds_file_insert_camera(file, camera, -1);
/* Since lib3ds considers +Y to be into the screen, we'll put
* this camera on the -Y axis, looking in the +Y direction.
*/
camera = lib3ds_camera_new("Camera_Y");
camera->target[0] = cx;
camera->target[1] = cy;
camera->target[2] = cz;
memcpy(camera->position, camera->target, sizeof(camera->position));
camera->position[1] = bmin[1] - 1.5 * MAX(sx, sz);
camera->near_range = (bmin[1] - camera->position[1]) * .5;
camera->far_range = (bmax[1] - camera->position[1]) * 2;
lib3ds_file_insert_camera(file, camera, -1);
camera = lib3ds_camera_new("Camera_Z");
camera->target[0] = cx;
camera->target[1] = cy;
camera->target[2] = cz;
memcpy(camera->position, camera->target, sizeof(camera->position));
camera->position[2] = bmax[2] + 1.5 * MAX(sx, sy);
camera->near_range = (camera->position[2] - bmax[2]) * .5;
camera->far_range = (camera->position[2] - bmin[2]) * 2;
lib3ds_file_insert_camera(file, camera, -1);
camera = lib3ds_camera_new("Camera_ISO");
camera->target[0] = cx;
camera->target[1] = cy;
camera->target[2] = cz;
memcpy(camera->position, camera->target, sizeof(camera->position));
camera->position[0] = bmax[0] + .75 * size;
camera->position[1] = bmin[1] - .75 * size;
camera->position[2] = bmax[2] + .75 * size;
camera->near_range = (camera->position[0] - bmax[0]) * .5;
camera->far_range = (camera->position[0] - bmin[0]) * 3;
lib3ds_file_insert_camera(file, camera, -1);
}
/* No lights in the file? Add some. */
if (!file->nlights) {
Lib3dsLight *light;
light = lib3ds_light_new("light0");
light->spot_light = 0;
light->see_cone = 0;
light->color[0] = light->color[1] = light->color[2] = .6;
light->position[0] = cx + size * .75;
light->position[1] = cy - size * 1.;
light->position[2] = cz + size * 1.5;
light->position[3] = 0.;
light->outer_range = 100;
light->inner_range = 10;
light->multiplier = 1;
lib3ds_file_insert_light(file, light, -1);
light = lib3ds_light_new("light1");
light->spot_light = 0;
light->see_cone = 0;
light->color[0] = light->color[1] = light->color[2] = .3;
light->position[0] = cx - size;
light->position[1] = cy - size;
light->position[2] = cz + size * .75;
light->position[3] = 0.;
light->outer_range = 100;
light->inner_range = 10;
light->multiplier = 1;
lib3ds_file_insert_light(file, light, -1);
light = lib3ds_light_new("light2");
light->spot_light = 0;
light->see_cone = 0;
light->color[0] = light->color[1] = light->color[2] = .3;
light->position[0] = cx;
light->position[1] = cy + size;
light->position[2] = cz + size;
light->position[3] = 0.;
light->outer_range = 100;
light->inner_range = 10;
light->multiplier = 1;
lib3ds_file_insert_light(file, light, -1);
}
camera = file->cameras[0]->name;
lib3ds_file_eval(file, 0);
}
