diff --git a/src/com/reco1l/framework/math/Vec2.kt b/src/com/reco1l/framework/math/Vec2.kt
index fe303f071..283e30167 100644
--- a/src/com/reco1l/framework/math/Vec2.kt
+++ b/src/com/reco1l/framework/math/Vec2.kt
@@ -2,12 +2,15 @@ package com.reco1l.framework.math
 
 data class Vec2(
 
-    val x: Float = 0f,
+    val x: Float,
 
-    val y: Float = 0f,
+    val y: Float,
 
 ) {
 
+    constructor(value: Float = 0f) : this(value, value)
+
+
     val total
         get() = x + y
 
diff --git a/src/com/reco1l/framework/math/Vec4.kt b/src/com/reco1l/framework/math/Vec4.kt
index 675c25b49..a4b11dade 100644
--- a/src/com/reco1l/framework/math/Vec4.kt
+++ b/src/com/reco1l/framework/math/Vec4.kt
@@ -2,13 +2,18 @@ package com.reco1l.framework.math
 
 data class Vec4(
 
-    val x: Float = 0f,
-    val y: Float = 0f,
-    val z: Float = 0f,
-    val w: Float = 0f,
+    val x: Float,
+    val y: Float,
+    val z: Float,
+    val w: Float,
 
 ) {
 
+    constructor(value: Float = 0f) : this(value, value, value, value)
+
+    constructor(xz: Float, yw: Float) : this(xz, yw, xz, yw)
+
+
     val left: Float
         get() = x