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a96bd7fe9155492d1f1d4d316911d0526fd23ba6
cell-model/fbx.c
John Alanbrook f703879ab7 fix gc bug
2026-02-25 23:26:12 -06:00

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#include "cell.h"
#include <string.h>
#include <stdlib.h>
#include "ufbx.h"
static JSValue make_float_array(JSContext *js, const double *arr, int count)
{
JS_FRAME(js);
JS_ROOT(a, JS_NewArray(js));
for (int i = 0; i < count; i++)
JS_SetPropertyNumber(js, a.val, i, JS_NewFloat64(js, arr[i]));
JS_RETURN(a.val);
}
static JSValue make_float_array_f(JSContext *js, const float *arr, int count)
{
JS_FRAME(js);
JS_ROOT(a, JS_NewArray(js));
for (int i = 0; i < count; i++)
JS_SetPropertyNumber(js, a.val, i, JS_NewFloat64(js, arr[i]));
JS_RETURN(a.val);
}
JSValue js_fbx_decode(JSContext *js, JSValue this_val, int argc, JSValueConst *argv)
{
size_t len;
void *raw = js_get_blob_data(js, &len, argv[0]);
if (raw == NULL) return JS_EXCEPTION;
ufbx_load_opts opts = {0};
opts.generate_missing_normals = true;
opts.target_axes = ufbx_axes_right_handed_y_up;
opts.target_unit_meters = 1.0;
ufbx_error error;
ufbx_scene *scene = ufbx_load_memory(raw, len, &opts, &error);
if (!scene)
return JS_ThrowReferenceError(js, "failed to parse FBX: %s", error.description.data);
JS_FRAME(js);
JS_ROOT(obj, JS_NewObject(js));
// Count total vertices and indices across all meshes
size_t total_vertices = 0;
size_t total_indices = 0;
int global_has_normals = 0;
int global_has_uvs = 0;
for (size_t mi = 0; mi < scene->meshes.count; mi++) {
ufbx_mesh *mesh = scene->meshes.data[mi];
total_vertices += mesh->num_indices;
total_indices += mesh->num_triangles * 3;
if (mesh->vertex_normal.exists) global_has_normals = 1;
if (mesh->vertex_uv.exists) global_has_uvs = 1;
}
int use_32bit = (total_vertices > 65535);
// Calculate buffer layout
size_t pos_size = total_vertices * 3 * sizeof(float);
size_t norm_size = global_has_normals ? total_vertices * 3 * sizeof(float) : 0;
size_t uv_size = global_has_uvs ? total_vertices * 2 * sizeof(float) : 0;
size_t idx_size = total_indices * (use_32bit ? sizeof(uint32_t) : sizeof(uint16_t));
size_t total_buffer_size = pos_size + norm_size + uv_size + idx_size;
uint8_t *buffer_data = malloc(total_buffer_size);
float *positions = (float *)buffer_data;
float *normals = global_has_normals ? (float *)(buffer_data + pos_size) : NULL;
float *uvs = global_has_uvs ? (float *)(buffer_data + pos_size + norm_size) : NULL;
void *indices = buffer_data + pos_size + norm_size + uv_size;
// Fill vertex data and track per-mesh offsets
size_t vertex_offset = 0;
size_t index_offset = 0;
// Store mesh info for later
typedef struct {
size_t vertex_start;
size_t vertex_count;
size_t index_start;
size_t index_count;
} mesh_info_t;
mesh_info_t *mesh_infos = malloc(scene->meshes.count * sizeof(mesh_info_t));
for (size_t mi = 0; mi < scene->meshes.count; mi++) {
ufbx_mesh *mesh = scene->meshes.data[mi];
mesh_infos[mi].vertex_start = vertex_offset;
mesh_infos[mi].vertex_count = mesh->num_indices;
mesh_infos[mi].index_start = index_offset;
// Copy vertex data (unindexed - one vertex per index)
for (size_t i = 0; i < mesh->num_indices; i++) {
ufbx_vec3 pos = ufbx_get_vertex_vec3(&mesh->vertex_position, i);
positions[(vertex_offset + i) * 3 + 0] = (float)pos.x;
positions[(vertex_offset + i) * 3 + 1] = (float)pos.y;
positions[(vertex_offset + i) * 3 + 2] = (float)pos.z;
if (normals && mesh->vertex_normal.exists) {
ufbx_vec3 norm = ufbx_get_vertex_vec3(&mesh->vertex_normal, i);
normals[(vertex_offset + i) * 3 + 0] = (float)norm.x;
normals[(vertex_offset + i) * 3 + 1] = (float)norm.y;
normals[(vertex_offset + i) * 3 + 2] = (float)norm.z;
} else if (normals) {
normals[(vertex_offset + i) * 3 + 0] = 0;
normals[(vertex_offset + i) * 3 + 1] = 1;
normals[(vertex_offset + i) * 3 + 2] = 0;
}
if (uvs && mesh->vertex_uv.exists) {
ufbx_vec2 uv = ufbx_get_vertex_vec2(&mesh->vertex_uv, i);
uvs[(vertex_offset + i) * 2 + 0] = (float)uv.x;
uvs[(vertex_offset + i) * 2 + 1] = (float)uv.y;
} else if (uvs) {
uvs[(vertex_offset + i) * 2 + 0] = 0;
uvs[(vertex_offset + i) * 2 + 1] = 0;
}
}
// Triangulate and create indices
size_t mesh_index_count = 0;
for (size_t fi = 0; fi < mesh->num_faces; fi++) {
ufbx_face face = mesh->faces.data[fi];
// Triangulate the face
for (uint32_t ti = 0; ti < face.num_indices - 2; ti++) {
size_t idx = index_offset + mesh_index_count;
if (use_32bit) {
((uint32_t *)indices)[idx + 0] = (uint32_t)(vertex_offset + face.index_begin);
((uint32_t *)indices)[idx + 1] = (uint32_t)(vertex_offset + face.index_begin + ti + 1);
((uint32_t *)indices)[idx + 2] = (uint32_t)(vertex_offset + face.index_begin + ti + 2);
} else {
((uint16_t *)indices)[idx + 0] = (uint16_t)(vertex_offset + face.index_begin);
((uint16_t *)indices)[idx + 1] = (uint16_t)(vertex_offset + face.index_begin + ti + 1);
((uint16_t *)indices)[idx + 2] = (uint16_t)(vertex_offset + face.index_begin + ti + 2);
}
mesh_index_count += 3;
}
}
mesh_infos[mi].index_count = mesh_index_count;
vertex_offset += mesh->num_indices;
index_offset += mesh_index_count;
}
// Create buffer
JSValue tmp;
JS_ROOT(buffers_arr, JS_NewArray(js));
{
JS_ROOT(buf, JS_NewObject(js));
tmp = js_new_blob_stoned_copy(js, buffer_data, total_buffer_size);
JS_SetPropertyStr(js, buf.val, "blob", tmp);
JS_SetPropertyStr(js, buf.val, "byte_length", JS_NewInt64(js, total_buffer_size));
JS_SetPropertyNumber(js, buffers_arr.val, 0, buf.val);
}
JS_SetPropertyStr(js, obj.val, "buffers", buffers_arr.val);
// Create views
JS_ROOT(views_arr, JS_NewArray(js));
int view_idx = 0;
{
JS_ROOT(pos_view, JS_NewObject(js));
JS_SetPropertyStr(js, pos_view.val, "buffer", JS_NewInt32(js, 0));
JS_SetPropertyStr(js, pos_view.val, "byte_offset", JS_NewInt64(js, 0));
JS_SetPropertyStr(js, pos_view.val, "byte_length", JS_NewInt64(js, pos_size));
JS_SetPropertyStr(js, pos_view.val, "byte_stride", JS_NULL);
tmp = JS_NewString(js, "vertex");
JS_SetPropertyStr(js, pos_view.val, "usage", tmp);
JS_SetPropertyNumber(js, views_arr.val, view_idx++, pos_view.val);
}
int pos_view_idx = 0;
int norm_view_idx = -1;
if (global_has_normals) {
JS_ROOT(norm_view, JS_NewObject(js));
JS_SetPropertyStr(js, norm_view.val, "buffer", JS_NewInt32(js, 0));
JS_SetPropertyStr(js, norm_view.val, "byte_offset", JS_NewInt64(js, pos_size));
JS_SetPropertyStr(js, norm_view.val, "byte_length", JS_NewInt64(js, norm_size));
JS_SetPropertyStr(js, norm_view.val, "byte_stride", JS_NULL);
tmp = JS_NewString(js, "vertex");
JS_SetPropertyStr(js, norm_view.val, "usage", tmp);
norm_view_idx = view_idx;
JS_SetPropertyNumber(js, views_arr.val, view_idx++, norm_view.val);
}
int uv_view_idx = -1;
if (global_has_uvs) {
JS_ROOT(uv_view, JS_NewObject(js));
JS_SetPropertyStr(js, uv_view.val, "buffer", JS_NewInt32(js, 0));
JS_SetPropertyStr(js, uv_view.val, "byte_offset", JS_NewInt64(js, pos_size + norm_size));
JS_SetPropertyStr(js, uv_view.val, "byte_length", JS_NewInt64(js, uv_size));
JS_SetPropertyStr(js, uv_view.val, "byte_stride", JS_NULL);
tmp = JS_NewString(js, "vertex");
JS_SetPropertyStr(js, uv_view.val, "usage", tmp);
uv_view_idx = view_idx;
JS_SetPropertyNumber(js, views_arr.val, view_idx++, uv_view.val);
}
{
JS_ROOT(idx_view, JS_NewObject(js));
JS_SetPropertyStr(js, idx_view.val, "buffer", JS_NewInt32(js, 0));
JS_SetPropertyStr(js, idx_view.val, "byte_offset", JS_NewInt64(js, pos_size + norm_size + uv_size));
JS_SetPropertyStr(js, idx_view.val, "byte_length", JS_NewInt64(js, idx_size));
JS_SetPropertyStr(js, idx_view.val, "byte_stride", JS_NULL);
tmp = JS_NewString(js, "index");
JS_SetPropertyStr(js, idx_view.val, "usage", tmp);
int idx_view_idx_tmp = view_idx;
JS_SetPropertyNumber(js, views_arr.val, view_idx++, idx_view.val);
}
int idx_view_idx = view_idx - 1;
JS_SetPropertyStr(js, obj.val, "views", views_arr.val);
// Create accessors per mesh
JS_ROOT(accessors_arr, JS_NewArray(js));
int acc_idx = 0;
JS_ROOT(meshes_arr, JS_NewArray(js));
for (size_t mi = 0; mi < scene->meshes.count; mi++) {
ufbx_mesh *mesh = scene->meshes.data[mi];
mesh_info_t *info = &mesh_infos[mi];
// Position accessor
int mesh_pos_acc = acc_idx;
{
JS_ROOT(spa, JS_NewObject(js));
JS_SetPropertyStr(js, spa.val, "view", JS_NewInt32(js, pos_view_idx));
JS_SetPropertyStr(js, spa.val, "byte_offset", JS_NewInt64(js, info->vertex_start * 3 * sizeof(float)));
JS_SetPropertyStr(js, spa.val, "count", JS_NewInt64(js, info->vertex_count));
tmp = JS_NewString(js, "f32");
JS_SetPropertyStr(js, spa.val, "component_type", tmp);
tmp = JS_NewString(js, "vec3");
JS_SetPropertyStr(js, spa.val, "type", tmp);
JS_SetPropertyStr(js, spa.val, "normalized", JS_FALSE);
JS_SetPropertyStr(js, spa.val, "min", JS_NULL);
JS_SetPropertyStr(js, spa.val, "max", JS_NULL);
JS_SetPropertyNumber(js, accessors_arr.val, acc_idx++, spa.val);
}
int mesh_norm_acc = -1;
if (global_has_normals) {
mesh_norm_acc = acc_idx;
JS_ROOT(sna, JS_NewObject(js));
JS_SetPropertyStr(js, sna.val, "view", JS_NewInt32(js, norm_view_idx));
JS_SetPropertyStr(js, sna.val, "byte_offset", JS_NewInt64(js, info->vertex_start * 3 * sizeof(float)));
JS_SetPropertyStr(js, sna.val, "count", JS_NewInt64(js, info->vertex_count));
tmp = JS_NewString(js, "f32");
JS_SetPropertyStr(js, sna.val, "component_type", tmp);
tmp = JS_NewString(js, "vec3");
JS_SetPropertyStr(js, sna.val, "type", tmp);
JS_SetPropertyStr(js, sna.val, "normalized", JS_FALSE);
JS_SetPropertyStr(js, sna.val, "min", JS_NULL);
JS_SetPropertyStr(js, sna.val, "max", JS_NULL);
JS_SetPropertyNumber(js, accessors_arr.val, acc_idx++, sna.val);
}
int mesh_uv_acc = -1;
if (global_has_uvs) {
mesh_uv_acc = acc_idx;
JS_ROOT(sua, JS_NewObject(js));
JS_SetPropertyStr(js, sua.val, "view", JS_NewInt32(js, uv_view_idx));
JS_SetPropertyStr(js, sua.val, "byte_offset", JS_NewInt64(js, info->vertex_start * 2 * sizeof(float)));
JS_SetPropertyStr(js, sua.val, "count", JS_NewInt64(js, info->vertex_count));
tmp = JS_NewString(js, "f32");
JS_SetPropertyStr(js, sua.val, "component_type", tmp);
tmp = JS_NewString(js, "vec2");
JS_SetPropertyStr(js, sua.val, "type", tmp);
JS_SetPropertyStr(js, sua.val, "normalized", JS_FALSE);
JS_SetPropertyStr(js, sua.val, "min", JS_NULL);
JS_SetPropertyStr(js, sua.val, "max", JS_NULL);
JS_SetPropertyNumber(js, accessors_arr.val, acc_idx++, sua.val);
}
int mesh_idx_acc = acc_idx;
{
JS_ROOT(sia, JS_NewObject(js));
JS_SetPropertyStr(js, sia.val, "view", JS_NewInt32(js, idx_view_idx));
JS_SetPropertyStr(js, sia.val, "byte_offset", JS_NewInt64(js, info->index_start * (use_32bit ? sizeof(uint32_t) : sizeof(uint16_t))));
JS_SetPropertyStr(js, sia.val, "count", JS_NewInt64(js, info->index_count));
tmp = JS_NewString(js, use_32bit ? "u32" : "u16");
JS_SetPropertyStr(js, sia.val, "component_type", tmp);
tmp = JS_NewString(js, "scalar");
JS_SetPropertyStr(js, sia.val, "type", tmp);
JS_SetPropertyStr(js, sia.val, "normalized", JS_FALSE);
JS_SetPropertyStr(js, sia.val, "min", JS_NULL);
JS_SetPropertyStr(js, sia.val, "max", JS_NULL);
JS_SetPropertyNumber(js, accessors_arr.val, acc_idx++, sia.val);
}
// Create mesh
JS_ROOT(m, JS_NewObject(js));
tmp = mesh->element.name.length > 0 ? JS_NewString(js, mesh->element.name.data) : JS_NULL;
JS_SetPropertyStr(js, m.val, "name", tmp);
JS_ROOT(prims_arr, JS_NewArray(js));
{
JS_ROOT(prim, JS_NewObject(js));
tmp = JS_NewString(js, "triangles");
JS_SetPropertyStr(js, prim.val, "topology", tmp);
JS_ROOT(attrs, JS_NewObject(js));
JS_SetPropertyStr(js, attrs.val, "POSITION", JS_NewInt32(js, mesh_pos_acc));
if (mesh_norm_acc >= 0)
JS_SetPropertyStr(js, attrs.val, "NORMAL", JS_NewInt32(js, mesh_norm_acc));
if (mesh_uv_acc >= 0)
JS_SetPropertyStr(js, attrs.val, "TEXCOORD_0", JS_NewInt32(js, mesh_uv_acc));
JS_SetPropertyStr(js, prim.val, "attributes", attrs.val);
JS_SetPropertyStr(js, prim.val, "indices", JS_NewInt32(js, mesh_idx_acc));
JS_SetPropertyStr(js, prim.val, "material", mesh->materials.count > 0 ? JS_NewInt32(js, mesh->materials.data[0]->typed_id) : JS_NULL);
JS_SetPropertyNumber(js, prims_arr.val, 0, prim.val);
}
JS_SetPropertyStr(js, m.val, "primitives", prims_arr.val);
JS_SetPropertyNumber(js, meshes_arr.val, mi, m.val);
}
JS_SetPropertyStr(js, obj.val, "accessors", accessors_arr.val);
JS_SetPropertyStr(js, obj.val, "meshes", meshes_arr.val);
// Materials
JS_ROOT(materials_arr, JS_NewArray(js));
for (size_t i = 0; i < scene->materials.count; i++) {
ufbx_material *mat = scene->materials.data[i];
JS_ROOT(m, JS_NewObject(js));
tmp = mat->element.name.length > 0 ? JS_NewString(js, mat->element.name.data) : JS_NULL;
JS_SetPropertyStr(js, m.val, "name", tmp);
JS_ROOT(pbr, JS_NewObject(js));
float bc[4] = {
(float)mat->pbr.base_color.value_vec4.x,
(float)mat->pbr.base_color.value_vec4.y,
(float)mat->pbr.base_color.value_vec4.z,
(float)mat->pbr.base_color.value_vec4.w
};
tmp = make_float_array_f(js, bc, 4);
JS_SetPropertyStr(js, pbr.val, "base_color_factor", tmp);
JS_SetPropertyStr(js, pbr.val, "base_color_texture", JS_NULL);
JS_SetPropertyStr(js, pbr.val, "metallic_factor", JS_NewFloat64(js, mat->pbr.metalness.value_real));
JS_SetPropertyStr(js, pbr.val, "roughness_factor", JS_NewFloat64(js, mat->pbr.roughness.value_real));
JS_SetPropertyStr(js, pbr.val, "metallic_roughness_texture", JS_NULL);
JS_SetPropertyStr(js, pbr.val, "normal_texture", JS_NULL);
JS_SetPropertyStr(js, pbr.val, "occlusion_texture", JS_NULL);
float ef[3] = {
(float)mat->pbr.emission_color.value_vec3.x,
(float)mat->pbr.emission_color.value_vec3.y,
(float)mat->pbr.emission_color.value_vec3.z
};
tmp = make_float_array_f(js, ef, 3);
JS_SetPropertyStr(js, pbr.val, "emissive_factor", tmp);
JS_SetPropertyStr(js, pbr.val, "emissive_texture", JS_NULL);
JS_SetPropertyStr(js, m.val, "pbr", pbr.val);
tmp = JS_NewString(js, "OPAQUE");
JS_SetPropertyStr(js, m.val, "alpha_mode", tmp);
JS_SetPropertyStr(js, m.val, "alpha_cutoff", JS_NewFloat64(js, 0.5));
JS_SetPropertyStr(js, m.val, "double_sided", JS_FALSE);
JS_SetPropertyNumber(js, materials_arr.val, i, m.val);
}
JS_SetPropertyStr(js, obj.val, "materials", materials_arr.val);
// Images/textures (simplified - just list texture files)
JS_ROOT(images_arr, JS_NewArray(js));
for (size_t i = 0; i < scene->texture_files.count; i++) {
ufbx_texture_file *tf = &scene->texture_files.data[i];
JS_ROOT(im, JS_NewObject(js));
tmp = JS_NewString(js, "uri");
JS_SetPropertyStr(js, im.val, "kind", tmp);
tmp = tf->filename.length > 0 ? JS_NewString(js, tf->filename.data) : JS_NULL;
JS_SetPropertyStr(js, im.val, "uri", tmp);
JS_SetPropertyStr(js, im.val, "mime", JS_NULL);
JS_SetPropertyNumber(js, images_arr.val, i, im.val);
}
JS_SetPropertyStr(js, obj.val, "images", images_arr.val);
JS_ROOT(textures_arr, JS_NewArray(js));
for (size_t i = 0; i < scene->textures.count; i++) {
ufbx_texture *tex = scene->textures.data[i];
JS_ROOT(t, JS_NewObject(js));
JS_SetPropertyStr(js, t.val, "image", tex->file_index != UFBX_NO_INDEX ? JS_NewInt32(js, tex->file_index) : JS_NULL);
JS_SetPropertyStr(js, t.val, "sampler", JS_NULL);
JS_SetPropertyNumber(js, textures_arr.val, i, t.val);
}
JS_SetPropertyStr(js, obj.val, "textures", textures_arr.val);
tmp = JS_NewArray(js);
JS_SetPropertyStr(js, obj.val, "samplers", tmp);
// Nodes
JS_ROOT(nodes_arr, JS_NewArray(js));
for (size_t i = 0; i < scene->nodes.count; i++) {
ufbx_node *node = scene->nodes.data[i];
JS_ROOT(n, JS_NewObject(js));
tmp = node->element.name.length > 0 ? JS_NewString(js, node->element.name.data) : JS_NULL;
JS_SetPropertyStr(js, n.val, "name", tmp);
// Find mesh index if this node has a mesh
int mesh_idx = -1;
if (node->mesh) {
for (size_t mi = 0; mi < scene->meshes.count; mi++) {
if (scene->meshes.data[mi] == node->mesh) {
mesh_idx = (int)mi;
break;
}
}
}
JS_SetPropertyStr(js, n.val, "mesh", mesh_idx >= 0 ? JS_NewInt32(js, mesh_idx) : JS_NULL);
JS_ROOT(children, JS_NewArray(js));
for (size_t ci = 0; ci < node->children.count; ci++) {
// Find child node index
for (size_t ni = 0; ni < scene->nodes.count; ni++) {
if (scene->nodes.data[ni] == node->children.data[ci]) {
JS_SetPropertyNumber(js, children.val, ci, JS_NewInt32(js, ni));
break;
}
}
}
JS_SetPropertyStr(js, n.val, "children", children.val);
JS_SetPropertyStr(js, n.val, "matrix", JS_NULL);
double tr[3] = {node->local_transform.translation.x, node->local_transform.translation.y, node->local_transform.translation.z};
double ro[4] = {node->local_transform.rotation.x, node->local_transform.rotation.y, node->local_transform.rotation.z, node->local_transform.rotation.w};
double sc[3] = {node->local_transform.scale.x, node->local_transform.scale.y, node->local_transform.scale.z};
tmp = make_float_array(js, tr, 3);
JS_SetPropertyStr(js, n.val, "translation", tmp);
tmp = make_float_array(js, ro, 4);
JS_SetPropertyStr(js, n.val, "rotation", tmp);
tmp = make_float_array(js, sc, 3);
JS_SetPropertyStr(js, n.val, "scale", tmp);
JS_SetPropertyStr(js, n.val, "skin", JS_NULL);
JS_SetPropertyNumber(js, nodes_arr.val, i, n.val);
}
JS_SetPropertyStr(js, obj.val, "nodes", nodes_arr.val);
// Scenes - FBX has one implicit scene with root node
JS_ROOT(scenes_arr, JS_NewArray(js));
{
JS_ROOT(scene_obj, JS_NewObject(js));
JS_ROOT(scene_nodes, JS_NewArray(js));
// Find root node index
for (size_t i = 0; i < scene->nodes.count; i++) {
if (scene->nodes.data[i] == scene->root_node) {
JS_SetPropertyNumber(js, scene_nodes.val, 0, JS_NewInt32(js, i));
break;
}
}
JS_SetPropertyStr(js, scene_obj.val, "nodes", scene_nodes.val);
JS_SetPropertyNumber(js, scenes_arr.val, 0, scene_obj.val);
}
JS_SetPropertyStr(js, obj.val, "scenes", scenes_arr.val);
JS_SetPropertyStr(js, obj.val, "scene", JS_NewInt32(js, 0));
// Animations
JS_ROOT(anims_arr, JS_NewArray(js));
for (size_t ai = 0; ai < scene->anim_stacks.count; ai++) {
ufbx_anim_stack *stack = scene->anim_stacks.data[ai];
JS_ROOT(a, JS_NewObject(js));
tmp = stack->element.name.length > 0 ? JS_NewString(js, stack->element.name.data) : JS_NULL;
JS_SetPropertyStr(js, a.val, "name", tmp);
tmp = JS_NewArray(js);
JS_SetPropertyStr(js, a.val, "samplers", tmp);
tmp = JS_NewArray(js);
JS_SetPropertyStr(js, a.val, "channels", tmp);
JS_SetPropertyNumber(js, anims_arr.val, ai, a.val);
}
JS_SetPropertyStr(js, obj.val, "animations", anims_arr.val);
// Skins
JS_ROOT(skins_arr, JS_NewArray(js));
for (size_t i = 0; i < scene->skin_deformers.count; i++) {
ufbx_skin_deformer *skin = scene->skin_deformers.data[i];
JS_ROOT(s, JS_NewObject(js));
tmp = skin->element.name.length > 0 ? JS_NewString(js, skin->element.name.data) : JS_NULL;
JS_SetPropertyStr(js, s.val, "name", tmp);
JS_ROOT(joints, JS_NewArray(js));
for (size_t ci = 0; ci < skin->clusters.count; ci++) {
ufbx_skin_cluster *cluster = skin->clusters.data[ci];
if (cluster->bone_node) {
for (size_t ni = 0; ni < scene->nodes.count; ni++) {
if (scene->nodes.data[ni] == cluster->bone_node) {
JS_SetPropertyNumber(js, joints.val, ci, JS_NewInt32(js, ni));
break;
}
}
}
}
JS_SetPropertyStr(js, s.val, "joints", joints.val);
JS_SetPropertyStr(js, s.val, "inverse_bind_matrices", JS_NULL);
JS_SetPropertyStr(js, s.val, "skeleton", JS_NULL);
JS_SetPropertyNumber(js, skins_arr.val, i, s.val);
}
JS_SetPropertyStr(js, obj.val, "skins", skins_arr.val);
// Extensions
JS_ROOT(exts, JS_NewObject(js));
tmp = JS_NewArray(js);
JS_SetPropertyStr(js, exts.val, "used", tmp);
tmp = JS_NewArray(js);
JS_SetPropertyStr(js, exts.val, "required", tmp);
JS_SetPropertyStr(js, obj.val, "extensions", exts.val);
free(mesh_infos);
free(buffer_data);
ufbx_free_scene(scene);
JS_RETURN(obj.val);
}
static const JSCFunctionListEntry js_fbx_funcs[] = {
MIST_FUNC_DEF(fbx, decode, 1),
};
CELL_USE_FUNCS(js_fbx_funcs)
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