/*!
* Evaluate all of the nodes in this Lib3dsFile object.
*
* \param file The Lib3dsFile object to be evaluated.
* \param t time value, between 0. and file->frames
*
* \see lib3ds_node_eval
*/
void
lib3ds_file_eval(Lib3dsFile *file, float t) {
Lib3dsNode *p;
for (p = file->nodes; p != 0; p = p->next) {
lib3ds_node_eval(p, t);
}
}
/*!
* Evaluate an animation node.
*
* Recursively sets node and its children to their appropriate values
* for this point in the animation.
*
* \param node Node to be evaluated.
* \param t time value, between 0. and file->frames
*
* \ingroup node
*/
void
lib3ds_node_eval(Lib3dsNode *node, Lib3dsFloat t)
{
ASSERT(node);
switch (node->type) {
case LIB3DS_UNKNOWN_NODE:
{
ASSERT(LIB3DS_FALSE);
}
break;
case LIB3DS_AMBIENT_NODE:
{
Lib3dsAmbientData *n=&node->data.ambient;
if (node->parent) {
lib3ds_matrix_copy(node->matrix, node->parent->matrix);
}
else {
lib3ds_matrix_identity(node->matrix);
}
lib3ds_lin3_track_eval(&n->col_track, n->col, t);
}
break;
case LIB3DS_OBJECT_NODE:
{
Lib3dsMatrix M;
Lib3dsObjectData *n=&node->data.object;
lib3ds_lin3_track_eval(&n->pos_track, n->pos, t);
lib3ds_quat_track_eval(&n->rot_track, n->rot, t);
if (n->scl_track.keyL) {
lib3ds_lin3_track_eval(&n->scl_track, n->scl, t);
}
else {
n->scl[0] = n->scl[1] = n->scl[2] = 1.0f;
}
lib3ds_bool_track_eval(&n->hide_track, &n->hide, t);
lib3ds_morph_track_eval(&n->morph_track, n->morph, t);
lib3ds_matrix_identity(M);
lib3ds_matrix_translate(M, n->pos);
lib3ds_matrix_rotate(M, n->rot);
lib3ds_matrix_scale(M, n->scl);
if (node->parent) {
lib3ds_matrix_copy(node->matrix, node->parent->matrix);
lib3ds_matrix_mult(node->matrix, M);
}
else {
lib3ds_matrix_copy(node->matrix, M);
}
}
break;
case LIB3DS_CAMERA_NODE:
{
Lib3dsCameraData *n=&node->data.camera;
lib3ds_lin3_track_eval(&n->pos_track, n->pos, t);
lib3ds_lin1_track_eval(&n->fov_track, &n->fov, t);
lib3ds_lin1_track_eval(&n->roll_track, &n->roll, t);
if (node->parent) {
lib3ds_matrix_copy(node->matrix, node->parent->matrix);
}
else {
lib3ds_matrix_identity(node->matrix);
}
lib3ds_matrix_translate(node->matrix, n->pos);
}
break;
case LIB3DS_TARGET_NODE:
{
Lib3dsTargetData *n=&node->data.target;
lib3ds_lin3_track_eval(&n->pos_track, n->pos, t);
if (node->parent) {
lib3ds_matrix_copy(node->matrix, node->parent->matrix);
}
else {
lib3ds_matrix_identity(node->matrix);
}
lib3ds_matrix_translate(node->matrix, n->pos);
}
break;
case LIB3DS_LIGHT_NODE:
{
Lib3dsLightData *n=&node->data.light;
lib3ds_lin3_track_eval(&n->pos_track, n->pos, t);
lib3ds_lin3_track_eval(&n->col_track, n->col, t);
lib3ds_lin1_track_eval(&n->hotspot_track, &n->hotspot, t);
lib3ds_lin1_track_eval(&n->falloff_track, &n->falloff, t);
lib3ds_lin1_track_eval(&n->roll_track, &n->roll, t);
if (node->parent) {
lib3ds_matrix_copy(node->matrix, node->parent->matrix);
}
else {
lib3ds_matrix_identity(node->matrix);
}
lib3ds_matrix_translate(node->matrix, n->pos);
}
break;
case LIB3DS_SPOT_NODE:
{
Lib3dsSpotData *n=&node->data.spot;
lib3ds_lin3_track_eval(&n->pos_track, n->pos, t);
if (node->parent) {
lib3ds_matrix_copy(node->matrix, node->parent->matrix);
}
else {
lib3ds_matrix_identity(node->matrix);
}
lib3ds_matrix_translate(node->matrix, n->pos);
}
break;
}
{
Lib3dsNode *p;
for (p=node->childs; p!=0; p=p->next) {
lib3ds_node_eval(p, t);
}
}
}
/*!
* Evaluate an animation node.
*
* Recursively sets node and its children to their appropriate values
* for this point in the animation.
*
* \param node Node to be evaluated.
* \param t time value, between 0. and file->frames
*/
void
lib3ds_node_eval(Lib3dsNode *node, float t) {
assert(node);
switch (node->type) {
case LIB3DS_NODE_AMBIENT_COLOR: {
Lib3dsAmbientColorNode *n = (Lib3dsAmbientColorNode*)node;
if (node->parent) {
lib3ds_matrix_copy(node->matrix, node->parent->matrix);
} else {
lib3ds_matrix_identity(node->matrix);
}
lib3ds_track_eval_vector(&n->color_track, n->color, t);
break;
}
case LIB3DS_NODE_MESH_INSTANCE: {
float M[4][4];
Lib3dsMeshInstanceNode *n = (Lib3dsMeshInstanceNode*)node;
lib3ds_track_eval_vector(&n->pos_track, n->pos, t);
lib3ds_track_eval_quat(&n->rot_track, n->rot, t);
if (n->scl_track.nkeys) {
lib3ds_track_eval_vector(&n->scl_track, n->scl, t);
} else {
n->scl[0] = n->scl[1] = n->scl[2] = 1.0f;
}
lib3ds_track_eval_bool(&n->hide_track, &n->hide, t);
lib3ds_matrix_identity(M);
lib3ds_matrix_translate(M, n->pos[0], n->pos[1], n->pos[2]);
lib3ds_matrix_rotate_quat(M, n->rot);
lib3ds_matrix_scale(M, n->scl[0], n->scl[1], n->scl[2]);
if (node->parent) {
lib3ds_matrix_mult(node->matrix, node->parent->matrix, M);
} else {
lib3ds_matrix_copy(node->matrix, M);
}
break;
}
case LIB3DS_NODE_CAMERA: {
Lib3dsCameraNode *n = (Lib3dsCameraNode*)node;
lib3ds_track_eval_vector(&n->pos_track, n->pos, t);
lib3ds_track_eval_float(&n->fov_track, &n->fov, t);
lib3ds_track_eval_float(&n->roll_track, &n->roll, t);
if (node->parent) {
lib3ds_matrix_copy(node->matrix, node->parent->matrix);
} else {
lib3ds_matrix_identity(node->matrix);
}
lib3ds_matrix_translate(node->matrix, n->pos[0], n->pos[1], n->pos[2]);
break;
}
case LIB3DS_NODE_CAMERA_TARGET: {
Lib3dsTargetNode *n = (Lib3dsTargetNode*)node;
lib3ds_track_eval_vector(&n->pos_track, n->pos, t);
if (node->parent) {
lib3ds_matrix_copy(node->matrix, node->parent->matrix);
} else {
lib3ds_matrix_identity(node->matrix);
}
lib3ds_matrix_translate(node->matrix, n->pos[0], n->pos[1], n->pos[2]);
break;
}
case LIB3DS_NODE_OMNILIGHT: {
Lib3dsOmnilightNode *n = (Lib3dsOmnilightNode*)node;
lib3ds_track_eval_vector(&n->pos_track, n->pos, t);
lib3ds_track_eval_vector(&n->color_track, n->color, t);
if (node->parent) {
lib3ds_matrix_copy(node->matrix, node->parent->matrix);
} else {
lib3ds_matrix_identity(node->matrix);
}
lib3ds_matrix_translate(node->matrix, n->pos[0], n->pos[1], n->pos[2]);
break;
}
case LIB3DS_NODE_SPOTLIGHT: {
Lib3dsSpotlightNode *n = (Lib3dsSpotlightNode*)node;
lib3ds_track_eval_vector(&n->pos_track, n->pos, t);
lib3ds_track_eval_vector(&n->color_track, n->color, t);
lib3ds_track_eval_float(&n->hotspot_track, &n->hotspot, t);
lib3ds_track_eval_float(&n->falloff_track, &n->falloff, t);
lib3ds_track_eval_float(&n->roll_track, &n->roll, t);
if (node->parent) {
lib3ds_matrix_copy(node->matrix, node->parent->matrix);
} else {
lib3ds_matrix_identity(node->matrix);
}
lib3ds_matrix_translate(node->matrix, n->pos[0], n->pos[1], n->pos[2]);
break;
}
case LIB3DS_NODE_SPOTLIGHT_TARGET: {
Lib3dsTargetNode *n = (Lib3dsTargetNode*)node;
lib3ds_track_eval_vector(&n->pos_track, n->pos, t);
if (node->parent) {
lib3ds_matrix_copy(node->matrix, node->parent->matrix);
} else {
lib3ds_matrix_identity(node->matrix);
}
lib3ds_matrix_translate(node->matrix, n->pos[0], n->pos[1], n->pos[2]);
break;
}
}
{
Lib3dsNode *p;
for (p = node->childs; p != 0; p = p->next) {
lib3ds_node_eval(p, t);
}
}
}
static bool load_keyframes(Lib3dsFile *file, const char *name, Lib3dsNodeTypes type, XFormNode *node) {
if(!name || !*name) return false;
Lib3dsNode *n = lib3ds_file_node_by_name(file, name, type);
if(!n) return false;
switch(type) {
case LIB3DS_OBJECT_NODE:
{
Lib3dsObjectData *obj = &n->data.object;
std::vector<int> *frames = get_frames(obj);
if(!frames) return false;
for(int i=0; i<(int)frames->size(); i++) {
lib3ds_node_eval(n, (float)(*frames)[i]);
Vector3 pos = CONV_VEC3(obj->pos) - CONV_VEC3(obj->pivot);
Quaternion rot = CONV_QUAT(obj->rot);
Vector3 scl = CONV_VEC3(obj->scl);
Keyframe key(PRS(pos, rot, scl), FRAME_TO_TIME((*frames)[i]));
node->add_keyframe(key);
}
}
break;
case LIB3DS_LIGHT_NODE:
{
Lib3dsLightData *light = &n->data.light;
std::vector<int> *frames = get_frames(light);
if(!frames) return false;
for(int i=0; i<(int)frames->size(); i++) {
lib3ds_node_eval(n, (float)(*frames)[i]);
Vector3 pos = CONV_VEC3(light->pos);
Keyframe key(PRS(pos, Quaternion()), FRAME_TO_TIME((*frames)[i]));
node->add_keyframe(key);
}
}
break;
case LIB3DS_CAMERA_NODE:
{
Lib3dsCameraData *cam = &n->data.camera;
std::vector<int> *frames = get_frames(cam);
if(!frames) return false;
for(int i=0; i<(int)frames->size(); i++) {
lib3ds_node_eval(n, (float)(*frames)[i]);
Vector3 pos = CONV_VEC3(cam->pos);
Keyframe key(PRS(pos, Quaternion()), FRAME_TO_TIME((*frames)[i]));
node->add_keyframe(key);
}
}
break;
/*
case LIB3DS_TARGET_NODE:
{
Lib3dsCameraData *targ = &n->data.target;
std::vector<int> *frames = get_frames(targ);
if(!frames) return false;
for(int i=0; i<(int)frames->size(); i++) {
lib3ds_node_eval(n, (float)(*frames)[i]);
Vector3 pos = CONV_VEC3(targ->pos);
Keyframe key(PRS(pos, Quaternion()), FRAME_TO_TIME((*frames)[i]));
node->add_keyframe(key);
}
}
break;
*/
default:
break;
}
return true;
}
