Rename `str2var` to `str_to_var` and similar

Affects the Math class, a good chunk of the audio code, and a lot of other miscellaneous classes, too.

- `var2str` -> `var_to_str`
- `str2var` -> `str_to_var`
- `bytes2var` -> `bytes_to_var`
- `bytes2var_with_objects` -> `bytes_to_var_with_objects`
- `var2bytes` -> `var_to_bytes`
- `var2bytes_with_objects` -> `var_to_bytes_with_objects`
- `linear2db` -> `linear_to_db`
- `db2linear` -> `db_to_linear`
- `deg2rad` -> `deg_to_rad`
- `rad2deg` -> `rad_to_deg`

- `dict2inst` -> `dict_to_inst`
- `inst2dict` -> `inst_to_dict`

4 files changed, 8 insertions, 8 deletions

diff --git a/scene/2d/audio_stream_player_2d.cpp b/scene/2d/audio_stream_player_2d.cpp
index fa49552085..fc019b6cf9 100644
--- a/scene/2d/audio_stream_player_2d.cpp
+++ b/scene/2d/audio_stream_player_2d.cpp
@@ -185,7 +185,7 @@ void AudioStreamPlayer2D::_update_panning() {
 		}
 
 		float multiplier = Math::pow(1.0f - dist / max_distance, attenuation);
-		multiplier *= Math::db2linear(volume_db); //also apply player volume!
+		multiplier *= Math::db_to_linear(volume_db); //also apply player volume!
 
 		float pan = relative_to_listener.x / screen_size.x;
 		// Don't let the panning effect extend (too far) beyond the screen.
diff --git a/scene/2d/cpu_particles_2d.cpp b/scene/2d/cpu_particles_2d.cpp
index 40f74d3f50..f68bebe2f4 100644
--- a/scene/2d/cpu_particles_2d.cpp
+++ b/scene/2d/cpu_particles_2d.cpp
@@ -745,12 +745,12 @@ void CPUParticles2D::_particles_process(double p_delta) {
 				p.start_color_rand = Color(1, 1, 1, 1);
 			}
 
-			real_t angle1_rad = direction.angle() + Math::deg2rad((Math::randf() * 2.0 - 1.0) * spread);
+			real_t angle1_rad = direction.angle() + Math::deg_to_rad((Math::randf() * 2.0 - 1.0) * spread);
 			Vector2 rot = Vector2(Math::cos(angle1_rad), Math::sin(angle1_rad));
 			p.velocity = rot * Math::lerp(parameters_min[PARAM_INITIAL_LINEAR_VELOCITY], parameters_max[PARAM_INITIAL_LINEAR_VELOCITY], (real_t)Math::randf());
 
 			real_t base_angle = tex_angle * Math::lerp(parameters_min[PARAM_ANGLE], parameters_max[PARAM_ANGLE], p.angle_rand);
-			p.rotation = Math::deg2rad(base_angle);
+			p.rotation = Math::deg_to_rad(base_angle);
 
 			p.custom[0] = 0.0; // unused
 			p.custom[1] = 0.0; // phase [0..1]
@@ -912,7 +912,7 @@ void CPUParticles2D::_particles_process(double p_delta) {
 			}
 			real_t base_angle = (tex_angle)*Math::lerp(parameters_min[PARAM_ANGLE], parameters_max[PARAM_ANGLE], p.angle_rand);
 			base_angle += p.custom[1] * lifetime * tex_angular_velocity * Math::lerp(parameters_min[PARAM_ANGULAR_VELOCITY], parameters_max[PARAM_ANGULAR_VELOCITY], rand_from_seed(alt_seed));
-			p.rotation = Math::deg2rad(base_angle); //angle
+			p.rotation = Math::deg_to_rad(base_angle); //angle
 			p.custom[2] = tex_anim_offset * Math::lerp(parameters_min[PARAM_ANIM_OFFSET], parameters_max[PARAM_ANIM_OFFSET], p.anim_offset_rand) + tv * tex_anim_speed * Math::lerp(parameters_min[PARAM_ANIM_SPEED], parameters_max[PARAM_ANIM_SPEED], rand_from_seed(alt_seed));
 		}
 		//apply color
diff --git a/scene/2d/physics_body_2d.h b/scene/2d/physics_body_2d.h
index fe64c087c6..08c300c9bc 100644
--- a/scene/2d/physics_body_2d.h
+++ b/scene/2d/physics_body_2d.h
@@ -373,9 +373,9 @@ private:
 	bool slide_on_ceiling = true;
 	int max_slides = 4;
 	int platform_layer = 0;
-	real_t floor_max_angle = Math::deg2rad((real_t)45.0);
+	real_t floor_max_angle = Math::deg_to_rad((real_t)45.0);
 	real_t floor_snap_length = 1;
-	real_t wall_min_slide_angle = Math::deg2rad((real_t)15.0);
+	real_t wall_min_slide_angle = Math::deg_to_rad((real_t)15.0);
 	Vector2 up_direction = Vector2(0.0, -1.0);
 	uint32_t platform_floor_layers = UINT32_MAX;
 	uint32_t platform_wall_layers = 0;
diff --git a/scene/2d/skeleton_2d.cpp b/scene/2d/skeleton_2d.cpp
index cbacb7f579..13a32fbfd4 100644
--- a/scene/2d/skeleton_2d.cpp
+++ b/scene/2d/skeleton_2d.cpp
@@ -44,7 +44,7 @@ bool Bone2D::_set(const StringName &p_path, const Variant &p_value) {
 	} else if (path.begins_with("length")) {
 		set_length(p_value);
 	} else if (path.begins_with("bone_angle")) {
-		set_bone_angle(Math::deg2rad(real_t(p_value)));
+		set_bone_angle(Math::deg_to_rad(real_t(p_value)));
 	} else if (path.begins_with("default_length")) {
 		set_length(p_value);
 	}
@@ -66,7 +66,7 @@ bool Bone2D::_get(const StringName &p_path, Variant &r_ret) const {
 	} else if (path.begins_with("length")) {
 		r_ret = get_length();
 	} else if (path.begins_with("bone_angle")) {
-		r_ret = Math::rad2deg(get_bone_angle());
+		r_ret = Math::rad_to_deg(get_bone_angle());
 	} else if (path.begins_with("default_length")) {
 		r_ret = get_length();
 	}