diff --git a/src/models.c b/src/models.c index 98c25c7b..045cd16a 100644 --- a/src/models.c +++ b/src/models.c @@ -5461,18 +5461,52 @@ void LoadGLTFMesh(cgltf_data *data, cgltf_mesh *mesh, Model *outModel, Matrix cu } } -void LoadGLTFNode(cgltf_data *data, cgltf_node *node, Model *outModel, Matrix currentTransform, int *primitiveIndex, const char *fileName) +static Matrix GetNodeTransformationMatrix(cgltf_node *node, Matrix current) { - Matrix nodeTransform = { + if (node->has_matrix) + { + Matrix nodeTransform = { node->matrix[0], node->matrix[4], node->matrix[8], node->matrix[12], node->matrix[1], node->matrix[5], node->matrix[9], node->matrix[13], node->matrix[2], node->matrix[6], node->matrix[10], node->matrix[14], node->matrix[3], node->matrix[7], node->matrix[11], node->matrix[15] }; + current= MatrixMultiply(nodeTransform, current); + } + if (node->has_translation) + { + Matrix tl = MatrixTranslate(node->translation[0],node->translation[1],node->translation[2]); + current = MatrixMultiply(tl, current); + } + if (node->has_rotation) + { + Matrix rot = QuaternionToMatrix((Quaternion){node->rotation[0],node->rotation[1],node->rotation[2],node->rotation[3]}); + current = MatrixMultiply(rot, current); + } + if (node->has_scale) + { + Matrix scale = MatrixScale(node->scale[0],node->scale[1],node->scale[2]); + current = MatrixMultiply(scale, current); + } + return current; +} - currentTransform = MatrixMultiply(nodeTransform, currentTransform); - - if (node->mesh != NULL) LoadGLTFMesh(data, node->mesh, outModel, currentTransform, primitiveIndex, fileName); - +void LoadGLTFNode(cgltf_data *data, cgltf_node *node, Model *outModel, Matrix currentTransform, int *primitiveIndex, const char *fileName) +{ + // Apply the transforms if they exist (Will still be applied even if no mesh is present to support emptys and bone structures) + Matrix localTransform = GetNodeTransformationMatrix(node, MatrixIdentity()); + currentTransform = MatrixMultiply(localTransform, currentTransform); + // Load mesh if it exists + if (node->mesh != NULL) + { + // Check if skinning is enabled and load Mesh accordingly + Matrix vertexTransform = currentTransform; + if((node->skin != NULL) && (node->parent != NULL)) + { + vertexTransform = localTransform; + TRACELOG(LOG_WARNING,"MODEL: GLTF Node %s is skinned but not root node! Parent transformations will be ignored (NODE_SKINNED_MESH_NON_ROOT)",node->name); + } + LoadGLTFMesh(data, node->mesh, outModel, vertexTransform, primitiveIndex, fileName); + } for (unsigned int i = 0; i < node->children_count; i++) LoadGLTFNode(data, node->children[i], outModel, currentTransform, primitiveIndex, fileName); }