diff --git a/src/main/java/de/bixilon/minosoft/data/text/formatting/color/ColorInterpolation.kt b/src/main/java/de/bixilon/minosoft/data/text/formatting/color/ColorInterpolation.kt
index 262c6df69..a44d7bccd 100644
--- a/src/main/java/de/bixilon/minosoft/data/text/formatting/color/ColorInterpolation.kt
+++ b/src/main/java/de/bixilon/minosoft/data/text/formatting/color/ColorInterpolation.kt
@@ -1,6 +1,6 @@
 /*
  * Minosoft
- * Copyright (C) 2020-2022 Moritz Zwerger
+ * Copyright (C) 2020-2023 Moritz Zwerger
  *
  * This program is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version.
  *
@@ -13,8 +13,8 @@
 
 package de.bixilon.minosoft.data.text.formatting.color
 
+import de.bixilon.kutil.math.Trigonometry.sin
 import kotlin.math.PI
-import kotlin.math.sin
 
 object ColorInterpolation {
 
diff --git a/src/main/java/de/bixilon/minosoft/gui/rendering/camera/frustum/Frustum.kt b/src/main/java/de/bixilon/minosoft/gui/rendering/camera/frustum/Frustum.kt
index 1e2497ad4..02ad0c4af 100644
--- a/src/main/java/de/bixilon/minosoft/gui/rendering/camera/frustum/Frustum.kt
+++ b/src/main/java/de/bixilon/minosoft/gui/rendering/camera/frustum/Frustum.kt
@@ -15,6 +15,7 @@ package de.bixilon.minosoft.gui.rendering.camera.frustum
 
 
 import de.bixilon.kotlinglm.mat3x3.Mat3
+import de.bixilon.kotlinglm.mat4x4.Mat4
 import de.bixilon.kotlinglm.vec2.Vec2i
 import de.bixilon.kotlinglm.vec3.Vec3
 import de.bixilon.kotlinglm.vec3.Vec3i
@@ -41,9 +42,7 @@ class Frustum(
     var revision = 0
         private set
 
-
-    fun recalculate() {
-        val matrix = matrixHandler.viewProjectionMatrix.transpose()
+    private fun recalculate(matrix: Mat4) {
         val planes = arrayOf(
             matrix[3] + matrix[0],
             matrix[3] - matrix[0],
@@ -113,6 +112,10 @@ class Frustum(
         revision++
     }
 
+    fun recalculate() {
+        recalculate(matrixHandler.viewProjectionMatrix.transpose())
+    }
+
 
     private fun containsRegion(minX: Float, minY: Float, minZ: Float, maxX: Float, maxY: Float, maxZ: Float): Boolean {
         if (!RenderConstants.FRUSTUM_CULLING_ENABLED) return true
diff --git a/src/main/java/de/bixilon/minosoft/gui/rendering/entities/renderer/item/ItemEntityRenderer.kt b/src/main/java/de/bixilon/minosoft/gui/rendering/entities/renderer/item/ItemEntityRenderer.kt
index b707a7afe..d639b9d7f 100644
--- a/src/main/java/de/bixilon/minosoft/gui/rendering/entities/renderer/item/ItemEntityRenderer.kt
+++ b/src/main/java/de/bixilon/minosoft/gui/rendering/entities/renderer/item/ItemEntityRenderer.kt
@@ -14,6 +14,7 @@
 package de.bixilon.minosoft.gui.rendering.entities.renderer.item
 
 import de.bixilon.kutil.math.MathConstants.PIf
+import de.bixilon.kutil.math.Trigonometry.sin
 import de.bixilon.kutil.observer.DataObserver.Companion.observe
 import de.bixilon.minosoft.data.entities.entities.item.ItemEntity
 import de.bixilon.minosoft.data.registries.identified.Identified
@@ -23,7 +24,6 @@ import de.bixilon.minosoft.gui.rendering.entities.feature.item.ItemFeature
 import de.bixilon.minosoft.gui.rendering.entities.renderer.EntityRenderer
 import de.bixilon.minosoft.gui.rendering.models.raw.display.DisplayPositions
 import de.bixilon.minosoft.gui.rendering.util.mat.mat4.Mat4Util.translateYAssign
-import kotlin.math.sin
 
 class ItemEntityRenderer(renderer: EntitiesRenderer, entity: ItemEntity) : EntityRenderer<ItemEntity>(renderer, entity) {
     val item = ItemFeature(this, null, DisplayPositions.GROUND).register()
diff --git a/src/main/java/de/bixilon/minosoft/gui/rendering/entities/util/EntitySpeedAnimator.kt b/src/main/java/de/bixilon/minosoft/gui/rendering/entities/util/EntitySpeedAnimator.kt
index 9b388093e..8736801db 100644
--- a/src/main/java/de/bixilon/minosoft/gui/rendering/entities/util/EntitySpeedAnimator.kt
+++ b/src/main/java/de/bixilon/minosoft/gui/rendering/entities/util/EntitySpeedAnimator.kt
@@ -14,8 +14,8 @@
 package de.bixilon.minosoft.gui.rendering.entities.util
 
 import de.bixilon.kutil.math.MathConstants
+import de.bixilon.kutil.math.Trigonometry.sin
 import de.bixilon.kutil.math.interpolation.FloatInterpolation.interpolateLinear
-import kotlin.math.sin
 
 class EntitySpeedAnimator(
     val speed: EntitySpeed,
diff --git a/src/main/java/de/bixilon/minosoft/gui/rendering/util/vec/vec3/Vec3Util.kt b/src/main/java/de/bixilon/minosoft/gui/rendering/util/vec/vec3/Vec3Util.kt
index b0c0630b0..c92c948c1 100644
--- a/src/main/java/de/bixilon/minosoft/gui/rendering/util/vec/vec3/Vec3Util.kt
+++ b/src/main/java/de/bixilon/minosoft/gui/rendering/util/vec/vec3/Vec3Util.kt
@@ -22,13 +22,13 @@ import de.bixilon.kotlinglm.vec3.Vec3i
 import de.bixilon.kotlinglm.vec3.swizzle.xy
 import de.bixilon.kotlinglm.vec3.swizzle.xz
 import de.bixilon.kotlinglm.vec3.swizzle.yz
+import de.bixilon.kutil.math.Trigonometry.sin
 import de.bixilon.kutil.math.interpolation.FloatInterpolation.interpolateLinear
 import de.bixilon.kutil.math.simple.FloatMath.floor
 import de.bixilon.kutil.primitive.FloatUtil.toFloat
 import de.bixilon.minosoft.data.Axes
 import de.bixilon.minosoft.data.text.formatting.color.RGBColor
 import kotlin.math.PI
-import kotlin.math.sin
 
 object Vec3Util {
     private val EMPTY_INSTANCE = Vec3.EMPTY