Cppcheck report - Godot - branch: master, commit: 216b3302f318c32a5dcf250293d90e47e712e8e9 (2024-12-22): scene/3d/camera_3d.cpp

/**************************************************************************/
/*  camera_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 "camera_3d.h"

#include "core/math/projection.h"
#include "core/math/transform_interpolator.h"
#include "scene/main/viewport.h"
#include "servers/rendering/rendering_server_constants.h"

void Camera3D::_update_audio_listener_state() {
}

void Camera3D::_request_camera_update() {
	_update_camera();
}

void Camera3D::_update_camera_mode() {
	force_change = true;
	switch (mode) {
		case PROJECTION_PERSPECTIVE: {
			set_perspective(fov, _near, _far);

		} break;
		case PROJECTION_ORTHOGONAL: {
			set_orthogonal(size, _near, _far);
		} break;
		case PROJECTION_FRUSTUM: {
			set_frustum(size, frustum_offset, _near, _far);
		} break;
	}
}

void Camera3D::_validate_property(PropertyInfo &p_property) const {
	if (p_property.name == "fov") {
		if (mode != PROJECTION_PERSPECTIVE) {
			p_property.usage = PROPERTY_USAGE_NO_EDITOR;
		}
	} else if (p_property.name == "size") {
		if (mode != PROJECTION_ORTHOGONAL && mode != PROJECTION_FRUSTUM) {
			p_property.usage = PROPERTY_USAGE_NO_EDITOR;
		}
	} else if (p_property.name == "frustum_offset") {
		if (mode != PROJECTION_FRUSTUM) {
			p_property.usage = PROPERTY_USAGE_NO_EDITOR;
		}
	}

	if (attributes.is_valid()) {
		const CameraAttributesPhysical *physical_attributes = Object::cast_to<CameraAttributesPhysical>(attributes.ptr());
		if (physical_attributes) {
			if (p_property.name == "near" || p_property.name == "far" || p_property.name == "fov" || p_property.name == "keep_aspect") {
				p_property.usage = PROPERTY_USAGE_READ_ONLY | PROPERTY_USAGE_INTERNAL | PROPERTY_USAGE_EDITOR;
			}
		}
	}

	Node3D::_validate_property(p_property);
}

void Camera3D::_update_camera() {
	if (!is_inside_tree()) {
		return;
	}

	if (!is_physics_interpolated_and_enabled()) {
		RenderingServer::get_singleton()->camera_set_transform(camera, get_camera_transform());
	} else {
		// Ideally we shouldn't be moving a physics interpolated camera within a frame,
		// because it will break smooth interpolation, but it may occur on e.g. level load.
		if (!Engine::get_singleton()->is_in_physics_frame() && camera.is_valid()) {
			_physics_interpolation_ensure_transform_calculated(true);
			RenderingServer::get_singleton()->camera_set_transform(camera, _interpolation_data.camera_xform_interpolated);
		}
	}

	if (is_part_of_edited_scene() || !is_current()) {
		return;
	}

	get_viewport()->_camera_3d_transform_changed_notify();
}

void Camera3D::_physics_interpolated_changed() {
	_update_process_mode();
}

void Camera3D::_physics_interpolation_ensure_data_flipped() {
	// The curr -> previous update can either occur
	// on the INTERNAL_PHYSICS_PROCESS OR
	// on NOTIFICATION_TRANSFORM_CHANGED,
	// if NOTIFICATION_TRANSFORM_CHANGED takes place
	// earlier than INTERNAL_PHYSICS_PROCESS on a tick.
	// This is to ensure that the data keeps flowing, but the new data
	// doesn't overwrite before prev has been set.

	// Keep the data flowing.
	uint64_t tick = Engine::get_singleton()->get_physics_frames();
	if (_interpolation_data.last_update_physics_tick != tick) {
		_interpolation_data.xform_prev = _interpolation_data.xform_curr;
		_interpolation_data.last_update_physics_tick = tick;
		physics_interpolation_flip_data();
	}
}

void Camera3D::_physics_interpolation_ensure_transform_calculated(bool p_force) const {
	DEV_CHECK_ONCE(!Engine::get_singleton()->is_in_physics_frame());

	InterpolationData &id = _interpolation_data;
	uint64_t frame = Engine::get_singleton()->get_frames_drawn();

	if (id.last_update_frame != frame || p_force) {
		id.last_update_frame = frame;

		TransformInterpolator::interpolate_transform_3d(id.xform_prev, id.xform_curr, id.xform_interpolated, Engine::get_singleton()->get_physics_interpolation_fraction());

		Transform3D &tr = id.camera_xform_interpolated;
		tr = _get_adjusted_camera_transform(id.xform_interpolated);
	}
}

void Camera3D::set_desired_process_modes(bool p_process_internal, bool p_physics_process_internal) {
	_desired_process_internal = p_process_internal;
	_desired_physics_process_internal = p_physics_process_internal;
	_update_process_mode();
}

void Camera3D::_update_process_mode() {
	bool process = _desired_process_internal;
	bool physics_process = _desired_physics_process_internal;

	if (is_physics_interpolated_and_enabled()) {
		if (is_current()) {
			process = true;
			physics_process = true;
		}
	}
	set_process_internal(process);
	set_physics_process_internal(physics_process);
}

void Camera3D::_notification(int p_what) {
	switch (p_what) {
		case NOTIFICATION_ENTER_WORLD: {
			// Needs to track the Viewport because it's needed on NOTIFICATION_EXIT_WORLD
			// and Spatial will handle it first, including clearing its reference to the Viewport,
			// therefore making it impossible to subclasses to access it
			viewport = get_viewport();
			ERR_FAIL_NULL(viewport);

			bool first_camera = viewport->_camera_3d_add(this);
			if (current || first_camera) {
				viewport->_camera_3d_set(this);
			}

#ifdef TOOLS_ENABLED
			if (Engine::get_singleton()->is_editor_hint()) {
				viewport->connect(SNAME("size_changed"), callable_mp((Node3D *)this, &Camera3D::update_gizmos));
			}
#endif
		} break;

		case NOTIFICATION_INTERNAL_PROCESS: {
			if (is_physics_interpolated_and_enabled() && camera.is_valid()) {
				_physics_interpolation_ensure_transform_calculated();

#ifdef RENDERING_SERVER_DEBUG_PHYSICS_INTERPOLATION
				print_line("\t\tinterpolated Camera3D: " + rtos(_interpolation_data.xform_interpolated.origin.x) + "\t( prev " + rtos(_interpolation_data.xform_prev.origin.x) + ", curr " + rtos(_interpolation_data.xform_curr.origin.x) + " ) on tick " + itos(Engine::get_singleton()->get_physics_frames()));
#endif

				RenderingServer::get_singleton()->camera_set_transform(camera, _interpolation_data.camera_xform_interpolated);
			}
		} break;

		case NOTIFICATION_INTERNAL_PHYSICS_PROCESS: {
			if (is_physics_interpolated_and_enabled()) {
				_physics_interpolation_ensure_data_flipped();
				_interpolation_data.xform_curr = get_global_transform();
			}
		} break;

		case NOTIFICATION_TRANSFORM_CHANGED: {
			if (is_physics_interpolated_and_enabled()) {
				_physics_interpolation_ensure_data_flipped();
				_interpolation_data.xform_curr = get_global_transform();
#if defined(DEBUG_ENABLED) && defined(TOOLS_ENABLED)
				if (!Engine::get_singleton()->is_in_physics_frame()) {
					PHYSICS_INTERPOLATION_NODE_WARNING(get_instance_id(), "Interpolated Camera3D triggered from outside physics process");
				}
#endif
			}
			_request_camera_update();
			if (doppler_tracking != DOPPLER_TRACKING_DISABLED) {
				velocity_tracker->update_position(get_global_transform().origin);
			}
			// Allow auto-reset when first adding to the tree, as a convenience.
			if (_is_physics_interpolation_reset_requested() && is_inside_tree()) {
				_notification(NOTIFICATION_RESET_PHYSICS_INTERPOLATION);
				_set_physics_interpolation_reset_requested(false);
			}
		} break;

		case NOTIFICATION_RESET_PHYSICS_INTERPOLATION: {
			if (is_inside_tree()) {
				_interpolation_data.xform_curr = get_global_transform();
				_interpolation_data.xform_prev = _interpolation_data.xform_curr;
			}
		} break;

		case NOTIFICATION_SUSPENDED:
		case NOTIFICATION_PAUSED: {
			if (is_physics_interpolated_and_enabled() && is_inside_tree() && is_visible_in_tree()) {
				_physics_interpolation_ensure_transform_calculated(true);
				RenderingServer::get_singleton()->camera_set_transform(camera, _interpolation_data.camera_xform_interpolated);
			}
		} break;

		case NOTIFICATION_EXIT_WORLD: {
			if (!is_part_of_edited_scene()) {
				if (is_current()) {
					clear_current();
					current = true; //keep it true

				} else {
					current = false;
				}
			}

			if (viewport) {
#ifdef TOOLS_ENABLED
				if (Engine::get_singleton()->is_editor_hint()) {
					viewport->disconnect(SNAME("size_changed"), callable_mp((Node3D *)this, &Camera3D::update_gizmos));
				}
#endif
				viewport->_camera_3d_remove(this);
				viewport = nullptr;
			}
		} break;

		case NOTIFICATION_BECAME_CURRENT: {
			if (viewport) {
				viewport->find_world_3d()->_register_camera(this);
			}
			_update_process_mode();
		} break;

		case NOTIFICATION_LOST_CURRENT: {
			if (viewport) {
				viewport->find_world_3d()->_remove_camera(this);
			}
			_update_process_mode();
		} break;
	}
}

Transform3D Camera3D::_get_adjusted_camera_transform(const Transform3D &p_xform) const {
	Transform3D tr = p_xform.orthonormalized();
	tr.origin += tr.basis.get_column(1) * v_offset;
	tr.origin += tr.basis.get_column(0) * h_offset;
	return tr;
}

Transform3D Camera3D::get_camera_transform() const {
	if (is_physics_interpolated_and_enabled() && !Engine::get_singleton()->is_in_physics_frame()) {
		_physics_interpolation_ensure_transform_calculated();
		return _interpolation_data.camera_xform_interpolated;
	}

	return _get_adjusted_camera_transform(get_global_transform());
}

Projection Camera3D::_get_camera_projection(real_t p_near) const {
	Size2 viewport_size = get_viewport()->get_visible_rect().size;
	Projection cm;

	switch (mode) {
		case PROJECTION_PERSPECTIVE: {
			cm.set_perspective(fov, viewport_size.aspect(), p_near, _far, keep_aspect == KEEP_WIDTH);
		} break;
		case PROJECTION_ORTHOGONAL: {
			cm.set_orthogonal(size, viewport_size.aspect(), p_near, _far, keep_aspect == KEEP_WIDTH);
		} break;
		case PROJECTION_FRUSTUM: {
			cm.set_frustum(size, viewport_size.aspect(), frustum_offset, p_near, _far);
		} break;
	}

	return cm;
}

Projection Camera3D::get_camera_projection() const {
	ERR_FAIL_COND_V_MSG(!is_inside_tree(), Projection(), "Camera is not inside the scene tree.");
	return _get_camera_projection(_near);
}

void Camera3D::set_perspective(real_t p_fovy_degrees, real_t p_z_near, real_t p_z_far) {
	if (!force_change && fov == p_fovy_degrees && p_z_near == _near && p_z_far == _far && mode == PROJECTION_PERSPECTIVE) {
		return;
	}

	fov = p_fovy_degrees;
	_near = p_z_near;
	_far = p_z_far;
	mode = PROJECTION_PERSPECTIVE;

	RenderingServer::get_singleton()->camera_set_perspective(camera, fov, _near, _far);
	update_gizmos();
	force_change = false;
}

void Camera3D::set_orthogonal(real_t p_size, real_t p_z_near, real_t p_z_far) {
	if (!force_change && size == p_size && p_z_near == _near && p_z_far == _far && mode == PROJECTION_ORTHOGONAL) {
		return;
	}

	size = p_size;

	_near = p_z_near;
	_far = p_z_far;
	mode = PROJECTION_ORTHOGONAL;
	force_change = false;

	RenderingServer::get_singleton()->camera_set_orthogonal(camera, size, _near, _far);
	update_gizmos();
}

void Camera3D::set_frustum(real_t p_size, Vector2 p_offset, real_t p_z_near, real_t p_z_far) {
	if (!force_change && size == p_size && frustum_offset == p_offset && p_z_near == _near && p_z_far == _far && mode == PROJECTION_FRUSTUM) {
		return;
	}

	size = p_size;
	frustum_offset = p_offset;

	_near = p_z_near;
	_far = p_z_far;
	mode = PROJECTION_FRUSTUM;
	force_change = false;

	RenderingServer::get_singleton()->camera_set_frustum(camera, size, frustum_offset, _near, _far);
	update_gizmos();
}

void Camera3D::set_projection(ProjectionType p_mode) {
	if (p_mode == PROJECTION_PERSPECTIVE || p_mode == PROJECTION_ORTHOGONAL || p_mode == PROJECTION_FRUSTUM) {
		mode = p_mode;
		_update_camera_mode();
		notify_property_list_changed();
	}
}

RID Camera3D::get_camera() const {
	return camera;
}

void Camera3D::make_current() {
	current = true;

	if (!is_inside_tree()) {
		return;
	}

	get_viewport()->_camera_3d_set(this);
}

void Camera3D::clear_current(bool p_enable_next) {
	current = false;
	if (!is_inside_tree()) {
		return;
	}

	if (get_viewport()->get_camera_3d() == this) {
		get_viewport()->_camera_3d_set(nullptr);

		if (p_enable_next && !Engine::get_singleton()->is_editor_hint()) {
			get_viewport()->_camera_3d_make_next_current(this);
		}
	}
}

void Camera3D::set_current(bool p_enabled) {
	if (p_enabled) {
		make_current();
	} else {
		clear_current();
	}
}

bool Camera3D::is_current() const {
	if (is_inside_tree() && !is_part_of_edited_scene()) {
		return get_viewport()->get_camera_3d() == this;
	} else {
		return current;
	}
}

Vector3 Camera3D::project_ray_normal(const Point2 &p_pos) const {
	Vector3 ray = project_local_ray_normal(p_pos);
	return get_camera_transform().basis.xform(ray).normalized();
}

Vector3 Camera3D::project_local_ray_normal(const Point2 &p_pos) const {
	ERR_FAIL_COND_V_MSG(!is_inside_tree(), Vector3(), "Camera is not inside scene.");

	Size2 viewport_size = get_viewport()->get_camera_rect_size();
	Vector2 cpos = get_viewport()->get_camera_coords(p_pos);
	Vector3 ray;

	if (mode == PROJECTION_ORTHOGONAL) {
		ray = Vector3(0, 0, -1);
	} else {
		Projection cm = _get_camera_projection(_near);
		Vector2 screen_he = cm.get_viewport_half_extents();
		ray = Vector3(((cpos.x / viewport_size.width) * 2.0 - 1.0) * screen_he.x, ((1.0 - (cpos.y / viewport_size.height)) * 2.0 - 1.0) * screen_he.y, -_near).normalized();
	}

	return ray;
}

Vector3 Camera3D::project_ray_origin(const Point2 &p_pos) const {
	ERR_FAIL_COND_V_MSG(!is_inside_tree(), Vector3(), "Camera is not inside scene.");

	Size2 viewport_size = get_viewport()->get_camera_rect_size();
	Vector2 cpos = get_viewport()->get_camera_coords(p_pos);
	ERR_FAIL_COND_V(viewport_size.y == 0, Vector3());

	if (mode == PROJECTION_ORTHOGONAL) {
		Vector2 pos = cpos / viewport_size;
		real_t vsize, hsize;
		if (keep_aspect == KEEP_WIDTH) {
			vsize = size / viewport_size.aspect();
			hsize = size;
		} else {
			hsize = size * viewport_size.aspect();
			vsize = size;
		}

		Vector3 ray;
		ray.x = pos.x * (hsize)-hsize / 2;
		ray.y = (1.0 - pos.y) * (vsize)-vsize / 2;
		ray.z = -_near;
		ray = get_camera_transform().xform(ray);
		return ray;
	} else {
		return get_camera_transform().origin;
	};
}

bool Camera3D::is_position_behind(const Vector3 &p_pos) const {
	Transform3D t = get_global_transform();
	Vector3 eyedir = -t.basis.get_column(2).normalized();
	return eyedir.dot(p_pos - t.origin) < _near;
}

Vector<Vector3> Camera3D::get_near_plane_points() const {
	ERR_FAIL_COND_V_MSG(!is_inside_tree(), Vector<Vector3>(), "Camera is not inside scene.");

	Projection cm = _get_camera_projection(_near);

	Vector3 endpoints[8];
	cm.get_endpoints(Transform3D(), endpoints);

	Vector<Vector3> points = {
		Vector3(),
		endpoints[4],
		endpoints[5],
		endpoints[6],
		endpoints[7]
	};
	return points;
}

Point2 Camera3D::unproject_position(const Vector3 &p_pos) const {
	ERR_FAIL_COND_V_MSG(!is_inside_tree(), Vector2(), "Camera is not inside scene.");

	Size2 viewport_size = get_viewport()->get_visible_rect().size;

	Projection cm = _get_camera_projection(_near);

	Plane p(get_camera_transform().xform_inv(p_pos), 1.0);

	p = cm.xform4(p);

	// Prevent divide by zero.
	// TODO: Investigate, this was causing NaNs.
	ERR_FAIL_COND_V(p.d == 0, Point2());

	p.normal /= p.d;

	Point2 res;
	res.x = (p.normal.x * 0.5 + 0.5) * viewport_size.x;
	res.y = (-p.normal.y * 0.5 + 0.5) * viewport_size.y;

	return res;
}

Vector3 Camera3D::project_position(const Point2 &p_point, real_t p_z_depth) const {
	ERR_FAIL_COND_V_MSG(!is_inside_tree(), Vector3(), "Camera is not inside scene.");

	if (p_z_depth == 0 && mode != PROJECTION_ORTHOGONAL) {
		return get_global_transform().origin;
	}
	Size2 viewport_size = get_viewport()->get_visible_rect().size;

	Projection cm = _get_camera_projection(_near);

	Plane z_slice(Vector3(0, 0, 1), -p_z_depth);
	Vector3 res;
	z_slice.intersect_3(cm.get_projection_plane(Projection::Planes::PLANE_RIGHT), cm.get_projection_plane(Projection::Planes::PLANE_TOP), &res);
	Vector2 vp_he(res.x, res.y);

	Vector2 point;
	point.x = (p_point.x / viewport_size.x) * 2.0 - 1.0;
	point.y = (1.0 - (p_point.y / viewport_size.y)) * 2.0 - 1.0;
	point *= vp_he;

	Vector3 p(point.x, point.y, -p_z_depth);

	return get_camera_transform().xform(p);
}

void Camera3D::set_environment(const Ref<Environment> &p_environment) {
	environment = p_environment;
	if (environment.is_valid()) {
		RS::get_singleton()->camera_set_environment(camera, environment->get_rid());
	} else {
		RS::get_singleton()->camera_set_environment(camera, RID());
	}
	_update_camera_mode();
}

Ref<Environment> Camera3D::get_environment() const {
	return environment;
}

void Camera3D::set_attributes(const Ref<CameraAttributes> &p_attributes) {
	if (attributes.is_valid()) {
		CameraAttributesPhysical *physical_attributes = Object::cast_to<CameraAttributesPhysical>(attributes.ptr());
		if (physical_attributes) {
			attributes->disconnect_changed(callable_mp(this, &Camera3D::_attributes_changed));
		}
	}

	attributes = p_attributes;

	if (attributes.is_valid()) {
		CameraAttributesPhysical *physical_attributes = Object::cast_to<CameraAttributesPhysical>(attributes.ptr());
		if (physical_attributes) {
			attributes->connect_changed(callable_mp(this, &Camera3D::_attributes_changed));
			_attributes_changed();
		}

		RS::get_singleton()->camera_set_camera_attributes(camera, attributes->get_rid());
	} else {
		RS::get_singleton()->camera_set_camera_attributes(camera, RID());
	}

	notify_property_list_changed();
}

Ref<CameraAttributes> Camera3D::get_attributes() const {
	return attributes;
}

void Camera3D::_attributes_changed() {
	CameraAttributesPhysical *physical_attributes = Object::cast_to<CameraAttributesPhysical>(attributes.ptr());
	ERR_FAIL_NULL(physical_attributes);

	fov = physical_attributes->get_fov();
	_near = physical_attributes->get_near();
	_far = physical_attributes->get_far();
	keep_aspect = KEEP_HEIGHT;
	_update_camera_mode();
}

void Camera3D::set_compositor(const Ref<Compositor> &p_compositor) {
	compositor = p_compositor;
	if (compositor.is_valid()) {
		RS::get_singleton()->camera_set_compositor(camera, compositor->get_rid());
	} else {
		RS::get_singleton()->camera_set_compositor(camera, RID());
	}
	_update_camera_mode();
}

Ref<Compositor> Camera3D::get_compositor() const {
	return compositor;
}

void Camera3D::set_keep_aspect_mode(KeepAspect p_aspect) {
	keep_aspect = p_aspect;
	RenderingServer::get_singleton()->camera_set_use_vertical_aspect(camera, p_aspect == KEEP_WIDTH);
	_update_camera_mode();
	notify_property_list_changed();
}

Camera3D::KeepAspect Camera3D::get_keep_aspect_mode() const {
	return keep_aspect;
}

void Camera3D::set_doppler_tracking(DopplerTracking p_tracking) {
	if (doppler_tracking == p_tracking) {
		return;
	}

	doppler_tracking = p_tracking;
	if (p_tracking != DOPPLER_TRACKING_DISABLED) {
		velocity_tracker->set_track_physics_step(doppler_tracking == DOPPLER_TRACKING_PHYSICS_STEP);
		if (is_inside_tree()) {
			velocity_tracker->reset(get_global_transform().origin);
		}
	}
	_update_camera_mode();
}

Camera3D::DopplerTracking Camera3D::get_doppler_tracking() const {
	return doppler_tracking;
}

void Camera3D::_bind_methods() {
	ClassDB::bind_method(D_METHOD("project_ray_normal", "screen_point"), &Camera3D::project_ray_normal);
	ClassDB::bind_method(D_METHOD("project_local_ray_normal", "screen_point"), &Camera3D::project_local_ray_normal);
	ClassDB::bind_method(D_METHOD("project_ray_origin", "screen_point"), &Camera3D::project_ray_origin);
	ClassDB::bind_method(D_METHOD("unproject_position", "world_point"), &Camera3D::unproject_position);
	ClassDB::bind_method(D_METHOD("is_position_behind", "world_point"), &Camera3D::is_position_behind);
	ClassDB::bind_method(D_METHOD("project_position", "screen_point", "z_depth"), &Camera3D::project_position);
	ClassDB::bind_method(D_METHOD("set_perspective", "fov", "z_near", "z_far"), &Camera3D::set_perspective);
	ClassDB::bind_method(D_METHOD("set_orthogonal", "size", "z_near", "z_far"), &Camera3D::set_orthogonal);
	ClassDB::bind_method(D_METHOD("set_frustum", "size", "offset", "z_near", "z_far"), &Camera3D::set_frustum);
	ClassDB::bind_method(D_METHOD("make_current"), &Camera3D::make_current);
	ClassDB::bind_method(D_METHOD("clear_current", "enable_next"), &Camera3D::clear_current, DEFVAL(true));
	ClassDB::bind_method(D_METHOD("set_current", "enabled"), &Camera3D::set_current);
	ClassDB::bind_method(D_METHOD("is_current"), &Camera3D::is_current);
	ClassDB::bind_method(D_METHOD("get_camera_transform"), &Camera3D::get_camera_transform);
	ClassDB::bind_method(D_METHOD("get_camera_projection"), &Camera3D::get_camera_projection);
	ClassDB::bind_method(D_METHOD("get_fov"), &Camera3D::get_fov);
	ClassDB::bind_method(D_METHOD("get_frustum_offset"), &Camera3D::get_frustum_offset);
	ClassDB::bind_method(D_METHOD("get_size"), &Camera3D::get_size);
	ClassDB::bind_method(D_METHOD("get_far"), &Camera3D::get_far);
	ClassDB::bind_method(D_METHOD("get_near"), &Camera3D::get_near);
	ClassDB::bind_method(D_METHOD("set_fov", "fov"), &Camera3D::set_fov);
	ClassDB::bind_method(D_METHOD("set_frustum_offset", "offset"), &Camera3D::set_frustum_offset);
	ClassDB::bind_method(D_METHOD("set_size", "size"), &Camera3D::set_size);
	ClassDB::bind_method(D_METHOD("set_far", "far"), &Camera3D::set_far);
	ClassDB::bind_method(D_METHOD("set_near", "near"), &Camera3D::set_near);
	ClassDB::bind_method(D_METHOD("get_projection"), &Camera3D::get_projection);
	ClassDB::bind_method(D_METHOD("set_projection", "mode"), &Camera3D::set_projection);
	ClassDB::bind_method(D_METHOD("set_h_offset", "offset"), &Camera3D::set_h_offset);
	ClassDB::bind_method(D_METHOD("get_h_offset"), &Camera3D::get_h_offset);
	ClassDB::bind_method(D_METHOD("set_v_offset", "offset"), &Camera3D::set_v_offset);
	ClassDB::bind_method(D_METHOD("get_v_offset"), &Camera3D::get_v_offset);
	ClassDB::bind_method(D_METHOD("set_cull_mask", "mask"), &Camera3D::set_cull_mask);
	ClassDB::bind_method(D_METHOD("get_cull_mask"), &Camera3D::get_cull_mask);
	ClassDB::bind_method(D_METHOD("set_environment", "env"), &Camera3D::set_environment);
	ClassDB::bind_method(D_METHOD("get_environment"), &Camera3D::get_environment);
	ClassDB::bind_method(D_METHOD("set_attributes", "env"), &Camera3D::set_attributes);
	ClassDB::bind_method(D_METHOD("get_attributes"), &Camera3D::get_attributes);
	ClassDB::bind_method(D_METHOD("set_compositor", "compositor"), &Camera3D::set_compositor);
	ClassDB::bind_method(D_METHOD("get_compositor"), &Camera3D::get_compositor);
	ClassDB::bind_method(D_METHOD("set_keep_aspect_mode", "mode"), &Camera3D::set_keep_aspect_mode);
	ClassDB::bind_method(D_METHOD("get_keep_aspect_mode"), &Camera3D::get_keep_aspect_mode);
	ClassDB::bind_method(D_METHOD("set_doppler_tracking", "mode"), &Camera3D::set_doppler_tracking);
	ClassDB::bind_method(D_METHOD("get_doppler_tracking"), &Camera3D::get_doppler_tracking);
	ClassDB::bind_method(D_METHOD("get_frustum"), &Camera3D::_get_frustum);
	ClassDB::bind_method(D_METHOD("is_position_in_frustum", "world_point"), &Camera3D::is_position_in_frustum);
	ClassDB::bind_method(D_METHOD("get_camera_rid"), &Camera3D::get_camera);
	ClassDB::bind_method(D_METHOD("get_pyramid_shape_rid"), &Camera3D::get_pyramid_shape_rid);

	ClassDB::bind_method(D_METHOD("set_cull_mask_value", "layer_number", "value"), &Camera3D::set_cull_mask_value);
	ClassDB::bind_method(D_METHOD("get_cull_mask_value", "layer_number"), &Camera3D::get_cull_mask_value);

	//ClassDB::bind_method(D_METHOD("_camera_make_current"),&Camera::_camera_make_current );

	ADD_PROPERTY(PropertyInfo(Variant::INT, "keep_aspect", PROPERTY_HINT_ENUM, "Keep Width,Keep Height"), "set_keep_aspect_mode", "get_keep_aspect_mode");
	ADD_PROPERTY(PropertyInfo(Variant::INT, "cull_mask", PROPERTY_HINT_LAYERS_3D_RENDER), "set_cull_mask", "get_cull_mask");
	ADD_PROPERTY(PropertyInfo(Variant::OBJECT, "environment", PROPERTY_HINT_RESOURCE_TYPE, "Environment"), "set_environment", "get_environment");
	ADD_PROPERTY(PropertyInfo(Variant::OBJECT, "attributes", PROPERTY_HINT_RESOURCE_TYPE, "CameraAttributesPractical,CameraAttributesPhysical"), "set_attributes", "get_attributes");
	ADD_PROPERTY(PropertyInfo(Variant::OBJECT, "compositor", PROPERTY_HINT_RESOURCE_TYPE, "Compositor"), "set_compositor", "get_compositor");
	ADD_PROPERTY(PropertyInfo(Variant::FLOAT, "h_offset", PROPERTY_HINT_NONE, "suffix:m"), "set_h_offset", "get_h_offset");
	ADD_PROPERTY(PropertyInfo(Variant::FLOAT, "v_offset", PROPERTY_HINT_NONE, "suffix:m"), "set_v_offset", "get_v_offset");
	ADD_PROPERTY(PropertyInfo(Variant::INT, "doppler_tracking", PROPERTY_HINT_ENUM, "Disabled,Idle,Physics"), "set_doppler_tracking", "get_doppler_tracking");
	ADD_PROPERTY(PropertyInfo(Variant::INT, "projection", PROPERTY_HINT_ENUM, "Perspective,Orthogonal,Frustum"), "set_projection", "get_projection");
	ADD_PROPERTY(PropertyInfo(Variant::BOOL, "current"), "set_current", "is_current");
	ADD_PROPERTY(PropertyInfo(Variant::FLOAT, "fov", PROPERTY_HINT_RANGE, "1,179,0.1,degrees"), "set_fov", "get_fov");
	ADD_PROPERTY(PropertyInfo(Variant::FLOAT, "size", PROPERTY_HINT_RANGE, "0.001,100,0.001,or_greater,suffix:m"), "set_size", "get_size");
	ADD_PROPERTY(PropertyInfo(Variant::VECTOR2, "frustum_offset", PROPERTY_HINT_NONE, "suffix:m"), "set_frustum_offset", "get_frustum_offset");
	ADD_PROPERTY(PropertyInfo(Variant::FLOAT, "near", PROPERTY_HINT_RANGE, "0.001,10,0.001,or_greater,exp,suffix:m"), "set_near", "get_near");
	ADD_PROPERTY(PropertyInfo(Variant::FLOAT, "far", PROPERTY_HINT_RANGE, "0.01,4000,0.01,or_greater,exp,suffix:m"), "set_far", "get_far");

	BIND_ENUM_CONSTANT(PROJECTION_PERSPECTIVE);
	BIND_ENUM_CONSTANT(PROJECTION_ORTHOGONAL);
	BIND_ENUM_CONSTANT(PROJECTION_FRUSTUM);

	BIND_ENUM_CONSTANT(KEEP_WIDTH);
	BIND_ENUM_CONSTANT(KEEP_HEIGHT);

	BIND_ENUM_CONSTANT(DOPPLER_TRACKING_DISABLED);
	BIND_ENUM_CONSTANT(DOPPLER_TRACKING_IDLE_STEP);
	BIND_ENUM_CONSTANT(DOPPLER_TRACKING_PHYSICS_STEP);
}

real_t Camera3D::get_fov() const {
	return fov;
}

real_t Camera3D::get_size() const {
	return size;
}

real_t Camera3D::get_near() const {
	return _near;
}

Vector2 Camera3D::get_frustum_offset() const {
	return frustum_offset;
}

real_t Camera3D::get_far() const {
	return _far;
}

Camera3D::ProjectionType Camera3D::get_projection() const {
	return mode;
}

void Camera3D::set_fov(real_t p_fov) {
	ERR_FAIL_COND(p_fov < 1 || p_fov > 179);
	fov = p_fov;
	_update_camera_mode();
}

void Camera3D::set_size(real_t p_size) {
	ERR_FAIL_COND(p_size <= CMP_EPSILON);
	size = p_size;
	_update_camera_mode();
}

void Camera3D::set_near(real_t p_near) {
	_near = p_near;
	_update_camera_mode();
}

void Camera3D::set_frustum_offset(Vector2 p_offset) {
	frustum_offset = p_offset;
	_update_camera_mode();
}

void Camera3D::set_far(real_t p_far) {
	_far = p_far;
	_update_camera_mode();
}

void Camera3D::set_cull_mask(uint32_t p_layers) {
	layers = p_layers;
	RenderingServer::get_singleton()->camera_set_cull_mask(camera, layers);
	_update_camera_mode();
}

uint32_t Camera3D::get_cull_mask() const {
	return layers;
}

void Camera3D::set_cull_mask_value(int p_layer_number, bool p_value) {
	ERR_FAIL_COND_MSG(p_layer_number < 1, "Render layer number must be between 1 and 20 inclusive.");
	ERR_FAIL_COND_MSG(p_layer_number > 20, "Render layer number must be between 1 and 20 inclusive.");
	uint32_t mask = get_cull_mask();
	if (p_value) {
		mask |= 1 << (p_layer_number - 1);
	} else {
		mask &= ~(1 << (p_layer_number - 1));
	}
	set_cull_mask(mask);
}

bool Camera3D::get_cull_mask_value(int p_layer_number) const {
	ERR_FAIL_COND_V_MSG(p_layer_number < 1, false, "Render layer number must be between 1 and 20 inclusive.");
	ERR_FAIL_COND_V_MSG(p_layer_number > 20, false, "Render layer number must be between 1 and 20 inclusive.");
	return layers & (1 << (p_layer_number - 1));
}

Vector<Plane> Camera3D::get_frustum() const {
	ERR_FAIL_COND_V(!is_inside_world(), Vector<Plane>());

	Projection cm = _get_camera_projection(_near);

	return cm.get_projection_planes(get_camera_transform());
}

TypedArray<Plane> Camera3D::_get_frustum() const {
	Variant ret = get_frustum();
	return ret;
}

bool Camera3D::is_position_in_frustum(const Vector3 &p_position) const {
	Vector<Plane> frustum = get_frustum();
	for (int i = 0; i < frustum.size(); i++) {
		if (frustum[i].is_point_over(p_position)) {
			return false;
		}
	}
	return true;
}

void Camera3D::set_v_offset(real_t p_offset) {
	v_offset = p_offset;
	_update_camera();
}

real_t Camera3D::get_v_offset() const {
	return v_offset;
}

void Camera3D::set_h_offset(real_t p_offset) {
	h_offset = p_offset;
	_update_camera();
}

real_t Camera3D::get_h_offset() const {
	return h_offset;
}

Vector3 Camera3D::get_doppler_tracked_velocity() const {
	if (doppler_tracking != DOPPLER_TRACKING_DISABLED) {
		return velocity_tracker->get_tracked_linear_velocity();
	} else {
		return Vector3();
	}
}

RID Camera3D::get_pyramid_shape_rid() {
	ERR_FAIL_COND_V_MSG(!is_inside_tree(), RID(), "Camera is not inside scene.");
	if (pyramid_shape == RID()) {
		pyramid_shape_points = get_near_plane_points();
		pyramid_shape = PhysicsServer3D::get_singleton()->convex_polygon_shape_create();
		PhysicsServer3D::get_singleton()->shape_set_data(pyramid_shape, pyramid_shape_points);

	} else { //check if points changed
		Vector<Vector3> local_points = get_near_plane_points();

		bool all_equal = true;

		for (int i = 0; i < 5; i++) {
			if (local_points[i] != pyramid_shape_points[i]) {
				all_equal = false;
				break;
			}
		}

		if (!all_equal) {
			PhysicsServer3D::get_singleton()->shape_set_data(pyramid_shape, local_points);
			pyramid_shape_points = local_points;
		}
	}

	return pyramid_shape;
}

Camera3D::Camera3D() {
	camera = RenderingServer::get_singleton()->camera_create();
<--- Variable 'camera' is assigned in constructor body. Consider performing initialization in initialization list. [+]
When an object of a class is created, the constructors of all member variables are called consecutively in the order the variables are declared, even if you don't explicitly write them to the initialization list. You could avoid assigning 'camera' a value by passing the value to the constructor in the initialization list.
	set_perspective(75.0, 0.05, 4000.0);
	RenderingServer::get_singleton()->camera_set_cull_mask(camera, layers);
	//active=false;
	velocity_tracker.instantiate();
	set_notify_transform(true);
	set_disable_scale(true);
}

Camera3D::~Camera3D() {
	ERR_FAIL_NULL(RenderingServer::get_singleton());
	RenderingServer::get_singleton()->free(camera);
	if (pyramid_shape.is_valid()) {
		ERR_FAIL_NULL(PhysicsServer3D::get_singleton());
		PhysicsServer3D::get_singleton()->free(pyramid_shape);
	}
}