diff --git a/Metaballs.xcodeproj/project.pbxproj b/Metaballs.xcodeproj/project.pbxproj
index 08b37fa..e568465 100644
--- a/Metaballs.xcodeproj/project.pbxproj
+++ b/Metaballs.xcodeproj/project.pbxproj
@@ -22,6 +22,7 @@
 		C0BBE3AC1F2E941200E68524 /* Renderer.swift in Sources */ = {isa = PBXBuildFile; fileRef = C0BBE3AB1F2E941200E68524 /* Renderer.swift */; };
 		C0BBE3AD1F30CD7E00E68524 /* MetalKit.framework in Frameworks */ = {isa = PBXBuildFile; fileRef = C0BBE3A71F2E893A00E68524 /* MetalKit.framework */; };
 		C0BBE3AF1F314C8200E68524 /* SamplingKernel.metal in Sources */ = {isa = PBXBuildFile; fileRef = C0BBE3AE1F314C8200E68524 /* SamplingKernel.metal */; };
+		C0CE7C001F362C3F001516B6 /* Geometry.swift in Sources */ = {isa = PBXBuildFile; fileRef = C0CE7BFF1F362C3F001516B6 /* Geometry.swift */; };
 /* End PBXBuildFile section */
 
 /* Begin PBXContainerItemProxy section */
@@ -62,6 +63,7 @@
 		C0BBE3A91F2E91D900E68524 /* Shaders.metal */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.metal; path = Shaders.metal; sourceTree = "<group>"; };
 		C0BBE3AB1F2E941200E68524 /* Renderer.swift */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.swift; path = Renderer.swift; sourceTree = "<group>"; };
 		C0BBE3AE1F314C8200E68524 /* SamplingKernel.metal */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.metal; path = SamplingKernel.metal; sourceTree = "<group>"; };
+		C0CE7BFF1F362C3F001516B6 /* Geometry.swift */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.swift; path = Geometry.swift; sourceTree = "<group>"; };
 /* End PBXFileReference section */
 
 /* Begin PBXFrameworksBuildPhase section */
@@ -152,6 +154,7 @@
 				C0BBE38E1F2E81B600E68524 /* MetaballsKit.h */,
 				C0BBE38F1F2E81B600E68524 /* Info.plist */,
 				C0BBE3A31F2E81C700E68524 /* Metaballs.swift */,
+				C0CE7BFF1F362C3F001516B6 /* Geometry.swift */,
 				C0BBE3AE1F314C8200E68524 /* SamplingKernel.metal */,
 			);
 			path = MetaballsKit;
@@ -372,6 +375,7 @@
 			buildActionMask = 2147483647;
 			files = (
 				C0BBE3A41F2E81C700E68524 /* Metaballs.swift in Sources */,
+				C0CE7C001F362C3F001516B6 /* Geometry.swift in Sources */,
 				C0BBE3AF1F314C8200E68524 /* SamplingKernel.metal in Sources */,
 			);
 			runOnlyForDeploymentPostprocessing = 0;
@@ -661,6 +665,7 @@
 				C0BBE3831F2E816500E68524 /* Release */,
 			);
 			defaultConfigurationIsVisible = 0;
+			defaultConfigurationName = Release;
 		};
 		C0BBE3841F2E816500E68524 /* Build configuration list for PBXNativeTarget "MetaballsTests" */ = {
 			isa = XCConfigurationList;
@@ -669,6 +674,7 @@
 				C0BBE3861F2E816500E68524 /* Release */,
 			);
 			defaultConfigurationIsVisible = 0;
+			defaultConfigurationName = Release;
 		};
 		C0BBE39D1F2E81B600E68524 /* Build configuration list for PBXNativeTarget "MetaballsKit" */ = {
 			isa = XCConfigurationList;
@@ -677,6 +683,7 @@
 				C0BBE39F1F2E81B600E68524 /* Release */,
 			);
 			defaultConfigurationIsVisible = 0;
+			defaultConfigurationName = Release;
 		};
 		C0BBE3A01F2E81B600E68524 /* Build configuration list for PBXNativeTarget "MetaballsKitTests" */ = {
 			isa = XCConfigurationList;
@@ -685,6 +692,7 @@
 				C0BBE3A21F2E81B600E68524 /* Release */,
 			);
 			defaultConfigurationIsVisible = 0;
+			defaultConfigurationName = Release;
 		};
 /* End XCConfigurationList section */
 	};
diff --git a/MetaballsKit/Geometry.swift b/MetaballsKit/Geometry.swift
new file mode 100644
index 0000000..a68d8da
--- /dev/null
+++ b/MetaballsKit/Geometry.swift
@@ -0,0 +1,41 @@
+//
+//  Geometry.swift
+//  Metaballs
+//
+//  Created by Eryn Wells on 8/5/17.
+//  Copyright © 2017 Eryn Wells. All rights reserved.
+//
+
+import Foundation
+
+public struct Point {
+    var x: Float
+    var y: Float
+
+    var CGPoint: CGPoint {
+        return CoreGraphics.CGPoint(x: CGFloat(x), y: CGFloat(y))
+    }
+
+    init() {
+        self.init(x: 0, y: 0)
+    }
+
+    init(x: Float, y: Float) {
+        self.x = x
+        self.y = y
+    }
+}
+
+public struct Vector {
+    var dx: Float
+    var dy: Float
+
+    init() {
+        self.init(dx: 0, dy: 0)
+    }
+
+    init(dx: Float, dy: Float) {
+        self.dx = dx
+        self.dy = dy
+    }
+}