From bf596421bbaf7c43319e2496dcab8d63cf51a91a Mon Sep 17 00:00:00 2001
From: apple502j <33279053+apple502j@users.noreply.github.com>
Date: Fri, 23 Jul 2021 21:53:43 +0900
Subject: [PATCH] 1.17.1 util.math stuff (#2596)

* 1.17.1 util.math stuff

* Map and document some methods

* Update mappings/net/minecraft/util/math/MathHelper.mapping

Co-authored-by: liach <7806504+liach@users.noreply.github.com>

* Update Direction.mapping

Co-authored-by: liach <7806504+liach@users.noreply.github.com>
---
 .../net/minecraft/util/math/ChunkPos.mapping  |  2 ++
 .../net/minecraft/util/math/Direction.mapping |  9 +++++
 .../minecraft/util/math/MathHelper.mapping    | 33 +++++++++++++++++++
 3 files changed, 44 insertions(+)

diff --git a/mappings/net/minecraft/util/math/ChunkPos.mapping b/mappings/net/minecraft/util/math/ChunkPos.mapping
index a5871700aa..e389962c82 100644
--- a/mappings/net/minecraft/util/math/ChunkPos.mapping
+++ b/mappings/net/minecraft/util/math/ChunkPos.mapping
@@ -35,6 +35,8 @@ CLASS net/minecraft/class_1923 net/minecraft/util/math/ChunkPos
 		ARG 1 offsetX
 		ARG 2 y
 		ARG 3 offsetZ
+	METHOD method_37232 toLong (Lnet/minecraft/class_2338;)J
+		ARG 0 pos
 	METHOD method_8323 getStartPos ()Lnet/minecraft/class_2338;
 	METHOD method_8324 toLong ()J
 	METHOD method_8325 getPackedX (J)I
diff --git a/mappings/net/minecraft/util/math/Direction.mapping b/mappings/net/minecraft/util/math/Direction.mapping
index f84585aa62..607f481ed5 100644
--- a/mappings/net/minecraft/util/math/Direction.mapping
+++ b/mappings/net/minecraft/util/math/Direction.mapping
@@ -88,6 +88,13 @@ CLASS net/minecraft/class_2350 net/minecraft/util/math/Direction
 		ARG 0 matrix
 		ARG 1 direction
 	METHOD method_23955 getUnitVector ()Lnet/minecraft/class_1160;
+	METHOD method_30928 pointsTo (F)Z
+		COMMENT {@return whether the given yaw points to the direction}
+		COMMENT 
+		COMMENT @implNote This returns whether the yaw can make an acute angle with the direction.
+		COMMENT
+		COMMENT <p>This always returns {@code false} for vertical directions.
+		ARG 1 yaw
 	METHOD method_32801 getLookDirectionForAxis (Lnet/minecraft/class_1297;Lnet/minecraft/class_2350$class_2351;)Lnet/minecraft/class_2350;
 		ARG 0 entity
 		ARG 1 axis
@@ -106,6 +113,8 @@ CLASS net/minecraft/class_2350 net/minecraft/util/math/Direction
 		FIELD field_11053 name Ljava/lang/String;
 		FIELD field_23780 VALUES [Lnet/minecraft/class_2350$class_2351;
 		FIELD field_25065 CODEC Lcom/mojang/serialization/Codec;
+		METHOD <init> (Ljava/lang/String;ILjava/lang/String;)V
+			ARG 3 name
 		METHOD method_10172 choose (DDD)D
 			ARG 1 x
 			ARG 3 y
diff --git a/mappings/net/minecraft/util/math/MathHelper.mapping b/mappings/net/minecraft/util/math/MathHelper.mapping
index 53f3db8174..5b835d00d3 100644
--- a/mappings/net/minecraft/util/math/MathHelper.mapping
+++ b/mappings/net/minecraft/util/math/MathHelper.mapping
@@ -6,6 +6,15 @@ CLASS net/minecraft/class_3532 net/minecraft/util/math/MathHelper
 	FIELD field_15726 RANDOM Ljava/util/Random;
 	FIELD field_15727 ARCSINE_TABLE [D
 	FIELD field_15728 SMALLEST_FRACTION_FREE_DOUBLE D
+	FIELD field_29844 PI F
+	FIELD field_29845 HALF_PI F
+	FIELD field_29846 TAU F
+		COMMENT Tau is equal to {@code 2 * PI}.
+	FIELD field_29847 RADIANS_PER_DEGREE F
+	FIELD field_29848 DEGREES_PER_RADIAN F
+	FIELD field_29849 EPSILON F
+	FIELD field_29853 HALF_PI_RADIANS_SINE_TABLE_INDEX J
+	FIELD field_29856 DEGREES_TO_SINE_TABLE_INDEX F
 	METHOD method_15338 wrapDegrees (D)D
 		COMMENT Wraps an angle in degrees to the interval {@code [-180, 180)}.
 		ARG 0 degrees
@@ -282,12 +291,36 @@ CLASS net/minecraft/class_3532 net/minecraft/util/math/MathHelper
 		ARG 0 value
 		ARG 1 min
 		ARG 2 max
+	METHOD method_34943 multiplyColors (IFFF)I
+		ARG 0 color
+		ARG 1 r
+		ARG 2 g
+		ARG 3 b
+	METHOD method_34944 murmurHash (J)J
+		ARG 0 value
 	METHOD method_34947 parseDouble (Ljava/lang/String;D)D
 		ARG 0 string
 		ARG 1 fallback
+	METHOD method_34948 parseDouble (Ljava/lang/String;DD)D
+		ARG 0 string
+		ARG 1 fallback
+		ARG 3 min
+	METHOD method_34949 parseInt (Ljava/lang/String;II)I
+		ARG 0 string
+		ARG 1 fallback
+		ARG 2 min
 	METHOD method_34951 getCumulativeDistribution ([D)[D
 		ARG 0 values
+	METHOD method_34952 multiplyColors (II)I
+		ARG 0 a
+		ARG 1 b
+	METHOD method_34953 absFloor (D)I
+		ARG 0 value
 	METHOD method_34954 square (I)I
 		ARG 0 n
 	METHOD method_34956 perlinFadeDerivative (D)D
 		ARG 0 value
+	METHOD method_37166 clampedLerp (FFF)F
+		ARG 0 start
+		ARG 1 end
+		ARG 2 delta