diff --git a/src/gl_engine/matrix/Matrix4.java b/src/gl_engine/matrix/Matrix4.java
index d78ff64..53b8ffb 100644
--- a/src/gl_engine/matrix/Matrix4.java
+++ b/src/gl_engine/matrix/Matrix4.java
@@ -99,6 +99,17 @@ public class Matrix4 implements IBdfClassManager
 		return result;
 	}
 	
+	public static Vec3d multiply(Matrix4 mat, Vec3d vec)
+	{
+		Vec3d result = new Vec3d(0, 0, 0);
+		
+		result.x = mat.get(0, 0) * vec.x + mat.get(1, 0) * vec.y + mat.get(2, 0) * vec.z + mat.get(3, 0);
+		result.y = mat.get(0, 1) * vec.x + mat.get(1, 1) * vec.y + mat.get(2, 1) * vec.z + mat.get(3, 1);
+		result.z = mat.get(0, 2) * vec.x + mat.get(1, 2) * vec.y + mat.get(2, 2) * vec.z + mat.get(3, 2);
+		
+		return result;
+	}
+	
 	public static Matrix4 transform(Vec3d position, Vec3d rotation, Vec3d scale)
 	{
 		Matrix4 scaleMatrix = scale(scale);
diff --git a/src/gl_engine/vec/Vec2d.java b/src/gl_engine/vec/Vec2d.java
index e004d6b..bad84cd 100755
--- a/src/gl_engine/vec/Vec2d.java
+++ b/src/gl_engine/vec/Vec2d.java
@@ -103,4 +103,20 @@ public class Vec2d implements IBdfClassManager
 	public Vec2d(BdfObject bdf) {
 		BdfClassLoad(bdf);
 	}
+	
+	public Vec3d xny() {
+		return new Vec3d(x, 0, y);
+	}
+	
+	public Vec3d xyn() {
+		return new Vec3d(x, y, 0);
+	}
+	
+	public Vec3d nxy() {
+		return new Vec3d(0, x, y);
+	}
+	
+	public Vec2d yx() {
+		return new Vec2d(y, x);
+	}
 }
diff --git a/src/gl_engine/vec/Vec2i.java b/src/gl_engine/vec/Vec2i.java
index 09fb68f..a0a80fe 100755
--- a/src/gl_engine/vec/Vec2i.java
+++ b/src/gl_engine/vec/Vec2i.java
@@ -116,4 +116,20 @@ public class Vec2i implements IBdfClassManager
 	public Vec2i(BdfObject bdf) {
 		BdfClassLoad(bdf);
 	}
+	
+	public Vec3i xny() {
+		return new Vec3i(x, 0, y);
+	}
+	
+	public Vec3i xyn() {
+		return new Vec3i(x, y, 0);
+	}
+	
+	public Vec3i nxy() {
+		return new Vec3i(0, x, y);
+	}
+	
+	public Vec2i yx() {
+		return new Vec2i(y, x);
+	}
 }
diff --git a/src/gl_engine/vec/Vec3d.java b/src/gl_engine/vec/Vec3d.java
index ca09710..54fb8c5 100755
--- a/src/gl_engine/vec/Vec3d.java
+++ b/src/gl_engine/vec/Vec3d.java
@@ -17,6 +17,14 @@ public class Vec3d implements IBdfClassManager
 		this.z = z;
 	}
 	
+	public Vec3d(Vec2d vec, double z) {
+		this(vec.x, vec.y, z);
+	}
+	
+	public Vec3d(double x, Vec2d vec) {
+		this(x, vec.x, vec.y);
+	}
+	
 	public double distance(Vec3d other) {
 		return MathHelpers.distance3d(x, y, z, other.x, other.y, other.z);
 	}
@@ -110,4 +118,16 @@ public class Vec3d implements IBdfClassManager
 	public Vec3d(BdfObject bdf) {
 		BdfClassLoad(bdf);
 	}
+	
+	public Vec2d xy() {
+		return new Vec2d(x, y);
+	}
+	
+	public Vec2d xz() {
+		return new Vec2d(x, z);
+	}
+	
+	public Vec2d yz() {
+		return new Vec2d(y, z);
+	}
 }
diff --git a/src/gl_engine/vec/Vec3i.java b/src/gl_engine/vec/Vec3i.java
index 1d7f2da..e1f8bf3 100755
--- a/src/gl_engine/vec/Vec3i.java
+++ b/src/gl_engine/vec/Vec3i.java
@@ -18,6 +18,14 @@ public class Vec3i implements IBdfClassManager
 		this.z = z;
 	}
 	
+	public Vec3i(Vec2i vec, int z) {
+		this(vec.x, vec.y, z);
+	}
+	
+	public Vec3i(int x, Vec2i vec) {
+		this(x, vec.x, vec.y);
+	}
+	
 	public double distance(Vec3i other) {
 		return MathHelpers.distance3d(x, y, z, other.x, other.y, other.z);
 	}
@@ -129,4 +137,16 @@ public class Vec3i implements IBdfClassManager
 	public Vec3i(BdfObject bdf) {
 		BdfClassLoad(bdf);
 	}
+	
+	public Vec2i xy() {
+		return new Vec2i(x, y);
+	}
+	
+	public Vec2i xz() {
+		return new Vec2i(x, z);
+	}
+	
+	public Vec2i yz() {
+		return new Vec2i(y, z);
+	}
 }
diff --git a/src/gl_engine/vec/Vec4d.java b/src/gl_engine/vec/Vec4d.java
index 47c61e5..a7fd3e6 100755
--- a/src/gl_engine/vec/Vec4d.java
+++ b/src/gl_engine/vec/Vec4d.java
@@ -11,6 +11,30 @@ public class Vec4d implements IBdfClassManager
 	public double z;
 	public double m;
 	
+	public Vec4d(Vec3d vec, double m) {
+		this(vec.x, vec.y, vec.z, m);
+	}
+	
+	public Vec4d(double x, Vec3d vec) {
+		this(x, vec.x, vec.y, vec.z);
+	}
+	
+	public Vec4d(Vec2d vec1, Vec2d vec2) {
+		this(vec1.x, vec1.y, vec2.x, vec2.y);
+	}
+	
+	public Vec4d(Vec2d vec, double z, double m) {
+		this(vec.x, vec.y, z, m);
+	}
+	
+	public Vec4d(double x, double y, Vec2d vec) {
+		this(x, y, vec.x, vec.y);
+	}
+	
+	public Vec4d(double x, Vec2d vec, double m) {
+		this(x, vec.x, vec.y, m);
+	}
+	
 	public Vec4d(double x, double y, double z, double m)
 	{
 		this.x = x;
@@ -119,4 +143,32 @@ public class Vec4d implements IBdfClassManager
 	public Vec4d(BdfObject bdf) {
 		BdfClassLoad(bdf);
 	}
+	
+	public Vec3d xyz() {
+		return new Vec3d(x, y, z);
+	}
+	
+	public Vec3d xym() {
+		return new Vec3d(x, y, m);
+	}
+	
+	public Vec3d xzm() {
+		return new Vec3d(x, z, m);
+	}
+	
+	public Vec3d yzm() {
+		return new Vec3d(y, z, m);
+	}
+	
+	public Vec2d xy() {
+		return new Vec2d(x, y);
+	}
+	
+	public Vec2d xz() {
+		return new Vec2d(x, z);
+	}
+	
+	public Vec2d yz() {
+		return new Vec2d(y, z);
+	}
 }
diff --git a/src/gl_engine/vec/Vec4i.java b/src/gl_engine/vec/Vec4i.java
index 84c1bd5..e4df4f8 100755
--- a/src/gl_engine/vec/Vec4i.java
+++ b/src/gl_engine/vec/Vec4i.java
@@ -20,6 +20,30 @@ public class Vec4i implements IBdfClassManager
 		this.m = m;
 	}
 	
+	public Vec4i(Vec3i vec, int m) {
+		this(vec.x, vec.y, vec.z, m);
+	}
+	
+	public Vec4i(int x, Vec3i vec) {
+		this(x, vec.x, vec.y, vec.z);
+	}
+	
+	public Vec4i(Vec2i vec1, Vec2i vec2) {
+		this(vec1.x, vec1.y, vec2.x, vec2.y);
+	}
+	
+	public Vec4i(Vec2i vec, int z, int m) {
+		this(vec.x, vec.y, z, m);
+	}
+	
+	public Vec4i(int x, int y, Vec2i vec) {
+		this(x, y, vec.x, vec.y);
+	}
+	
+	public Vec4i(int x, Vec2i vec, int m) {
+		this(x, vec.x, vec.y, m);
+	}
+	
 	public double distance(Vec4i other) {
 		return Math.sqrt(
 				MathHelpers.squared(this.x - other.x) +
@@ -144,4 +168,32 @@ public class Vec4i implements IBdfClassManager
 	public Vec4i(BdfObject bdf) {
 		BdfClassLoad(bdf);
 	}
+	
+	public Vec3i xyz() {
+		return new Vec3i(x, y, z);
+	}
+	
+	public Vec3i xym() {
+		return new Vec3i(x, y, m);
+	}
+	
+	public Vec3i xzm() {
+		return new Vec3i(x, z, m);
+	}
+	
+	public Vec3i yzm() {
+		return new Vec3i(y, z, m);
+	}
+	
+	public Vec2i xy() {
+		return new Vec2i(x, y);
+	}
+	
+	public Vec2i xz() {
+		return new Vec2i(x, z);
+	}
+	
+	public Vec2i yz() {
+		return new Vec2i(y, z);
+	}
 }