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`

5 files changed, 38 insertions, 38 deletions

diff --git a/core/math/audio_frame.h b/core/math/audio_frame.h
index b3d63c0094..1a80faaa12 100644
--- a/core/math/audio_frame.h
+++ b/core/math/audio_frame.h
@@ -48,7 +48,7 @@ static inline float undenormalise(volatile float f) {
 }
 
 static const float AUDIO_PEAK_OFFSET = 0.0000000001f;
-static const float AUDIO_MIN_PEAK_DB = -200.0f; // linear2db(AUDIO_PEAK_OFFSET)
+static const float AUDIO_MIN_PEAK_DB = -200.0f; // linear_to_db(AUDIO_PEAK_OFFSET)
 
 struct AudioFrame {
 	//left and right samples
diff --git a/core/math/math_funcs.h b/core/math/math_funcs.h
index 463e119add..fd20440663 100644
--- a/core/math/math_funcs.h
+++ b/core/math/math_funcs.h
@@ -229,11 +229,11 @@ public:
 		return value;
 	}
 
-	static _ALWAYS_INLINE_ double deg2rad(double p_y) { return p_y * (Math_PI / 180.0); }
-	static _ALWAYS_INLINE_ float deg2rad(float p_y) { return p_y * (float)(Math_PI / 180.0); }
+	static _ALWAYS_INLINE_ double deg_to_rad(double p_y) { return p_y * (Math_PI / 180.0); }
+	static _ALWAYS_INLINE_ float deg_to_rad(float p_y) { return p_y * (float)(Math_PI / 180.0); }
 
-	static _ALWAYS_INLINE_ double rad2deg(double p_y) { return p_y * (180.0 / Math_PI); }
-	static _ALWAYS_INLINE_ float rad2deg(float p_y) { return p_y * (float)(180.0 / Math_PI); }
+	static _ALWAYS_INLINE_ double rad_to_deg(double p_y) { return p_y * (180.0 / Math_PI); }
+	static _ALWAYS_INLINE_ float rad_to_deg(float p_y) { return p_y * (float)(180.0 / Math_PI); }
 
 	static _ALWAYS_INLINE_ double lerp(double p_from, double p_to, double p_weight) { return p_from + (p_to - p_from) * p_weight; }
 	static _ALWAYS_INLINE_ float lerp(float p_from, float p_to, float p_weight) { return p_from + (p_to - p_from) * p_weight; }
@@ -331,11 +331,11 @@ public:
 	static _ALWAYS_INLINE_ double move_toward(double p_from, double p_to, double p_delta) { return abs(p_to - p_from) <= p_delta ? p_to : p_from + SIGN(p_to - p_from) * p_delta; }
 	static _ALWAYS_INLINE_ float move_toward(float p_from, float p_to, float p_delta) { return abs(p_to - p_from) <= p_delta ? p_to : p_from + SIGN(p_to - p_from) * p_delta; }
 
-	static _ALWAYS_INLINE_ double linear2db(double p_linear) { return Math::log(p_linear) * 8.6858896380650365530225783783321; }
-	static _ALWAYS_INLINE_ float linear2db(float p_linear) { return Math::log(p_linear) * (float)8.6858896380650365530225783783321; }
+	static _ALWAYS_INLINE_ double linear_to_db(double p_linear) { return Math::log(p_linear) * 8.6858896380650365530225783783321; }
+	static _ALWAYS_INLINE_ float linear_to_db(float p_linear) { return Math::log(p_linear) * (float)8.6858896380650365530225783783321; }
 
-	static _ALWAYS_INLINE_ double db2linear(double p_db) { return Math::exp(p_db * 0.11512925464970228420089957273422); }
-	static _ALWAYS_INLINE_ float db2linear(float p_db) { return Math::exp(p_db * (float)0.11512925464970228420089957273422); }
+	static _ALWAYS_INLINE_ double db_to_linear(double p_db) { return Math::exp(p_db * 0.11512925464970228420089957273422); }
+	static _ALWAYS_INLINE_ float db_to_linear(float p_db) { return Math::exp(p_db * (float)0.11512925464970228420089957273422); }
 
 	static _ALWAYS_INLINE_ double round(double p_val) { return ::round(p_val); }
 	static _ALWAYS_INLINE_ float round(float p_val) { return ::roundf(p_val); }
diff --git a/core/math/projection.cpp b/core/math/projection.cpp
index edf8bf36cd..863fe6ee79 100644
--- a/core/math/projection.cpp
+++ b/core/math/projection.cpp
@@ -255,7 +255,7 @@ void Projection::set_perspective(real_t p_fovy_degrees, real_t p_aspect, real_t
 	}
 
 	real_t sine, cotangent, deltaZ;
-	real_t radians = Math::deg2rad(p_fovy_degrees / 2.0);
+	real_t radians = Math::deg_to_rad(p_fovy_degrees / 2.0);
 
 	deltaZ = p_z_far - p_z_near;
 	sine = Math::sin(radians);
@@ -282,7 +282,7 @@ void Projection::set_perspective(real_t p_fovy_degrees, real_t p_aspect, real_t
 
 	real_t left, right, modeltranslation, ymax, xmax, frustumshift;
 
-	ymax = p_z_near * tan(Math::deg2rad(p_fovy_degrees / 2.0));
+	ymax = p_z_near * tan(Math::deg_to_rad(p_fovy_degrees / 2.0));
 	xmax = ymax * p_aspect;
 	frustumshift = (p_intraocular_dist / 2.0) * p_z_near / p_convergence_dist;
 
@@ -816,7 +816,7 @@ real_t Projection::get_fov() const {
 	right_plane.normalize();
 
 	if ((matrix[8] == 0) && (matrix[9] == 0)) {
-		return Math::rad2deg(Math::acos(Math::abs(right_plane.normal.x))) * 2.0;
+		return Math::rad_to_deg(Math::acos(Math::abs(right_plane.normal.x))) * 2.0;
 	} else {
 		// our frustum is asymmetrical need to calculate the left planes angle separately..
 		Plane left_plane = Plane(matrix[3] + matrix[0],
@@ -825,7 +825,7 @@ real_t Projection::get_fov() const {
 				matrix[15] + matrix[12]);
 		left_plane.normalize();
 
-		return Math::rad2deg(Math::acos(Math::abs(left_plane.normal.x))) + Math::rad2deg(Math::acos(Math::abs(right_plane.normal.x)));
+		return Math::rad_to_deg(Math::acos(Math::abs(left_plane.normal.x))) + Math::rad_to_deg(Math::acos(Math::abs(right_plane.normal.x)));
 	}
 }
 
diff --git a/core/math/projection.h b/core/math/projection.h
index a3d2d7720b..f149d307b3 100644
--- a/core/math/projection.h
+++ b/core/math/projection.h
@@ -96,7 +96,7 @@ struct Projection {
 	Projection jitter_offseted(const Vector2 &p_offset) const;
 
 	static real_t get_fovy(real_t p_fovx, real_t p_aspect) {
-		return Math::rad2deg(Math::atan(p_aspect * Math::tan(Math::deg2rad(p_fovx) * 0.5)) * 2.0);
+		return Math::rad_to_deg(Math::atan(p_aspect * Math::tan(Math::deg_to_rad(p_fovx) * 0.5)) * 2.0);
 	}
 
 	real_t get_z_far() const;
diff --git a/core/variant/variant_utility.cpp b/core/variant/variant_utility.cpp
index 21c9c483a5..964150aa2d 100644
--- a/core/variant/variant_utility.cpp
+++ b/core/variant/variant_utility.cpp
@@ -396,20 +396,20 @@ struct VariantUtilityFunctions {
 		return Math::move_toward(from, to, delta);
 	}
 
-	static inline double deg2rad(double angle_deg) {
-		return Math::deg2rad(angle_deg);
+	static inline double deg_to_rad(double angle_deg) {
+		return Math::deg_to_rad(angle_deg);
 	}
 
-	static inline double rad2deg(double angle_rad) {
-		return Math::rad2deg(angle_rad);
+	static inline double rad_to_deg(double angle_rad) {
+		return Math::rad_to_deg(angle_rad);
 	}
 
-	static inline double linear2db(double linear) {
-		return Math::linear2db(linear);
+	static inline double linear_to_db(double linear) {
+		return Math::linear_to_db(linear);
 	}
 
-	static inline double db2linear(double db) {
-		return Math::db2linear(db);
+	static inline double db_to_linear(double db) {
+		return Math::db_to_linear(db);
 	}
 
 	static inline Variant wrap(const Variant &p_x, const Variant &p_min, const Variant &p_max, Callable::CallError &r_error) {
@@ -837,13 +837,13 @@ struct VariantUtilityFunctions {
 		r_error.error = Callable::CallError::CALL_OK;
 	}
 
-	static inline String var2str(const Variant &p_var) {
+	static inline String var_to_str(const Variant &p_var) {
 		String vars;
 		VariantWriter::write_to_string(p_var, vars);
 		return vars;
 	}
 
-	static inline Variant str2var(const String &p_var) {
+	static inline Variant str_to_var(const String &p_var) {
 		VariantParser::StreamString ss;
 		ss.s = p_var;
 
@@ -855,7 +855,7 @@ struct VariantUtilityFunctions {
 		return ret;
 	}
 
-	static inline PackedByteArray var2bytes(const Variant &p_var) {
+	static inline PackedByteArray var_to_bytes(const Variant &p_var) {
 		int len;
 		Error err = encode_variant(p_var, nullptr, len, false);
 		if (err != OK) {
@@ -875,7 +875,7 @@ struct VariantUtilityFunctions {
 		return barr;
 	}
 
-	static inline PackedByteArray var2bytes_with_objects(const Variant &p_var) {
+	static inline PackedByteArray var_to_bytes_with_objects(const Variant &p_var) {
 		int len;
 		Error err = encode_variant(p_var, nullptr, len, true);
 		if (err != OK) {
@@ -895,7 +895,7 @@ struct VariantUtilityFunctions {
 		return barr;
 	}
 
-	static inline Variant bytes2var(const PackedByteArray &p_arr) {
+	static inline Variant bytes_to_var(const PackedByteArray &p_arr) {
 		Variant ret;
 		{
 			const uint8_t *r = p_arr.ptr();
@@ -907,7 +907,7 @@ struct VariantUtilityFunctions {
 		return ret;
 	}
 
-	static inline Variant bytes2var_with_objects(const PackedByteArray &p_arr) {
+	static inline Variant bytes_to_var_with_objects(const PackedByteArray &p_arr) {
 		Variant ret;
 		{
 			const uint8_t *r = p_arr.ptr();
@@ -1428,10 +1428,10 @@ void Variant::_register_variant_utility_functions() {
 	FUNCBINDR(smoothstep, sarray("from", "to", "x"), Variant::UTILITY_FUNC_TYPE_MATH);
 	FUNCBINDR(move_toward, sarray("from", "to", "delta"), Variant::UTILITY_FUNC_TYPE_MATH);
 
-	FUNCBINDR(deg2rad, sarray("deg"), Variant::UTILITY_FUNC_TYPE_MATH);
-	FUNCBINDR(rad2deg, sarray("rad"), Variant::UTILITY_FUNC_TYPE_MATH);
-	FUNCBINDR(linear2db, sarray("lin"), Variant::UTILITY_FUNC_TYPE_MATH);
-	FUNCBINDR(db2linear, sarray("db"), Variant::UTILITY_FUNC_TYPE_MATH);
+	FUNCBINDR(deg_to_rad, sarray("deg"), Variant::UTILITY_FUNC_TYPE_MATH);
+	FUNCBINDR(rad_to_deg, sarray("rad"), Variant::UTILITY_FUNC_TYPE_MATH);
+	FUNCBINDR(linear_to_db, sarray("lin"), Variant::UTILITY_FUNC_TYPE_MATH);
+	FUNCBINDR(db_to_linear, sarray("db"), Variant::UTILITY_FUNC_TYPE_MATH);
 
 	FUNCBINDVR3(wrap, sarray("value", "min", "max"), Variant::UTILITY_FUNC_TYPE_MATH);
 	FUNCBINDR(wrapi, sarray("value", "min", "max"), Variant::UTILITY_FUNC_TYPE_MATH);
@@ -1479,14 +1479,14 @@ void Variant::_register_variant_utility_functions() {
 	FUNCBINDVARARGV(push_error, sarray(), Variant::UTILITY_FUNC_TYPE_GENERAL);
 	FUNCBINDVARARGV(push_warning, sarray(), Variant::UTILITY_FUNC_TYPE_GENERAL);
 
-	FUNCBINDR(var2str, sarray("variable"), Variant::UTILITY_FUNC_TYPE_GENERAL);
-	FUNCBINDR(str2var, sarray("string"), Variant::UTILITY_FUNC_TYPE_GENERAL);
+	FUNCBINDR(var_to_str, sarray("variable"), Variant::UTILITY_FUNC_TYPE_GENERAL);
+	FUNCBINDR(str_to_var, sarray("string"), Variant::UTILITY_FUNC_TYPE_GENERAL);
 
-	FUNCBINDR(var2bytes, sarray("variable"), Variant::UTILITY_FUNC_TYPE_GENERAL);
-	FUNCBINDR(bytes2var, sarray("bytes"), Variant::UTILITY_FUNC_TYPE_GENERAL);
+	FUNCBINDR(var_to_bytes, sarray("variable"), Variant::UTILITY_FUNC_TYPE_GENERAL);
+	FUNCBINDR(bytes_to_var, sarray("bytes"), Variant::UTILITY_FUNC_TYPE_GENERAL);
 
-	FUNCBINDR(var2bytes_with_objects, sarray("variable"), Variant::UTILITY_FUNC_TYPE_GENERAL);
-	FUNCBINDR(bytes2var_with_objects, sarray("bytes"), Variant::UTILITY_FUNC_TYPE_GENERAL);
+	FUNCBINDR(var_to_bytes_with_objects, sarray("variable"), Variant::UTILITY_FUNC_TYPE_GENERAL);
+	FUNCBINDR(bytes_to_var_with_objects, sarray("bytes"), Variant::UTILITY_FUNC_TYPE_GENERAL);
 
 	FUNCBINDR(hash, sarray("variable"), Variant::UTILITY_FUNC_TYPE_GENERAL);