From f818e42c6c21ed6b2d7993dca87e6cd52f3d5251 Mon Sep 17 00:00:00 2001
From: syeyoung <cyoung06@naver.com>
Date: Sat, 2 Oct 2021 15:30:51 +0900
Subject: Line Properties for each pathfind context

---
 .../kr/syeyoung/dungeonsguide/utils/VectorUtils.java | 20 ++++++++++++++++++++
 1 file changed, 20 insertions(+)

(limited to 'src/main/java/kr/syeyoung/dungeonsguide/utils/VectorUtils.java')

diff --git a/src/main/java/kr/syeyoung/dungeonsguide/utils/VectorUtils.java b/src/main/java/kr/syeyoung/dungeonsguide/utils/VectorUtils.java
index 8f13dd8a..59eaa866 100755
--- a/src/main/java/kr/syeyoung/dungeonsguide/utils/VectorUtils.java
+++ b/src/main/java/kr/syeyoung/dungeonsguide/utils/VectorUtils.java
@@ -18,6 +18,12 @@
 
 package kr.syeyoung.dungeonsguide.utils;
 
+import lombok.AllArgsConstructor;
+import lombok.Data;
+import net.minecraft.client.Minecraft;
+import net.minecraft.client.renderer.ActiveRenderInfo;
+import net.minecraft.util.Vec3;
+
 import javax.vecmath.Vector2d;
 
 public class VectorUtils {
@@ -30,4 +36,18 @@ public class VectorUtils {
     public static Vector2d rotateClockwise(Vector2d vector2d) {
         return new Vector2d(-vector2d.y, vector2d.x);
     }
+
+    @Data @AllArgsConstructor
+    public static class ProjectionResult {
+        private float x;
+        private float y;
+        private boolean back;
+    }
+
+    public static double distSquared(Vec3 lookVec, Vec3 posVec, Vec3 objectVec) {
+        Vec3 v = objectVec.subtract(posVec);
+        double t = v.dotProduct(lookVec);
+        Vec3 p = posVec.addVector(lookVec.xCoord * t, lookVec.yCoord * t, lookVec.zCoord * t);
+        return p.squareDistanceTo(objectVec) / p.squareDistanceTo(posVec);
+    }
 }
-- 
cgit