/**************************************************************************/
/*  multimesh_instance_3d.cpp                                             */
/**************************************************************************/
/*                         This file is part of:                          */
/*                             GODOT ENGINE                               */
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/* Copyright (c) 2014-present Godot Engine contributors (see AUTHORS.md). */
/* Copyright (c) 2007-2014 Juan Linietsky, Ariel Manzur.                  */
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#include "multimesh_instance_3d.h"

void MultiMeshInstance3D::_refresh_interpolated() {
	if (is_inside_tree() && multimesh.is_valid()) {
		bool interpolated = is_physics_interpolated_and_enabled();
		multimesh->set_physics_interpolated(interpolated);
	}
}

void MultiMeshInstance3D::_physics_interpolated_changed() {
	VisualInstance3D::_physics_interpolated_changed();
	_refresh_interpolated();
}

void MultiMeshInstance3D::_bind_methods() {
	ClassDB::bind_method(D_METHOD("set_multimesh", "multimesh"), &MultiMeshInstance3D::set_multimesh);
	ClassDB::bind_method(D_METHOD("get_multimesh"), &MultiMeshInstance3D::get_multimesh);
	ADD_PROPERTY(PropertyInfo(Variant::OBJECT, "multimesh", PROPERTY_HINT_RESOURCE_TYPE, "MultiMesh"), "set_multimesh", "get_multimesh");
}

void MultiMeshInstance3D::_notification(int p_what) {
	if (p_what == NOTIFICATION_ENTER_TREE) {
		_refresh_interpolated();
	}
}

void MultiMeshInstance3D::set_multimesh(const Ref<MultiMesh> &p_multimesh) {
	multimesh = p_multimesh;
	if (multimesh.is_valid()) {
		set_base(multimesh->get_rid());
		_refresh_interpolated();
	} else {
		set_base(RID());
	}
}

Ref<MultiMesh> MultiMeshInstance3D::get_multimesh() const {
	return multimesh;
}

Array MultiMeshInstance3D::get_meshes() const {
	if (multimesh.is_null() || multimesh->get_mesh().is_null() || multimesh->get_transform_format() != MultiMesh::TransformFormat::TRANSFORM_3D) {
		return Array();
	}

	int count = multimesh->get_visible_instance_count();
	if (count == -1) {
		count = multimesh->get_instance_count();
	}

	Ref<Mesh> mesh = multimesh->get_mesh();

	Array results;
	for (int i = 0; i < count; i++) {
		results.push_back(multimesh->get_instance_transform(i));
		results.push_back(mesh);
	}
	return results;
}

AABB MultiMeshInstance3D::get_aabb() const {
	if (multimesh.is_null()) {
		return AABB();
	} else {
		return multimesh->get_aabb();
	}
}

MultiMeshInstance3D::MultiMeshInstance3D() {
}

MultiMeshInstance3D::~MultiMeshInstance3D() {
}