From d85773ffda4a6a2602b319cc0ee8ec757cc0042b Mon Sep 17 00:00:00 2001
From: hanemile <hanemile@protonmail.com>
Date: Sat, 3 Nov 2018 17:53:44 +0100
Subject: Exported the quadtree function (quadtree -> Quadtree)

---
 structs.go      | 34 +++++++++++++++++-----------------
 structs_test.go |  8 ++++----
 2 files changed, 21 insertions(+), 21 deletions(-)

diff --git a/structs.go b/structs.go
index fa503ec..5f916bd 100644
--- a/structs.go
+++ b/structs.go
@@ -8,14 +8,14 @@ type Coord struct {
 	y float64
 }
 
-// BoundingBox defines a single cell in the quadtree
+// BoundingBox defines a single cell in the Quadtree
 type BoundingBox struct {
 	center        Coord
 	halfDimension float64
 }
 
-// quadtree defining the whole quadtree and a node in itself (recursively)
-type quadtree struct {
+// Quadtree defining the whole Quadtree and a node in itself (recursively)
+type Quadtree struct {
 	// general information (node capacity, spacial outreach)
 	nodeCapacity int
 	boundary     BoundingBox
@@ -23,11 +23,11 @@ type quadtree struct {
 	// slice storing the star coordinates
 	pointsSlice []Coord
 
-	// the quadtree leaves
-	northWest *quadtree
-	northEast *quadtree
-	southWest *quadtree
-	southEast *quadtree
+	// the Quadtree leaves
+	northWest *Quadtree
+	northEast *Quadtree
+	southWest *Quadtree
+	southEast *Quadtree
 
 	depth int
 }
@@ -45,7 +45,7 @@ func NewBoundingBox(inCenter Coord, inHalfDimension float64) BoundingBox {
 	}
 }
 
-func (point Coord) InsideOf(quadtreeCell *quadtree) bool {
+func (point Coord) InsideOf(quadtreeCell *Quadtree) bool {
 	// define the bounds
 	var lowerXBound = quadtreeCell.boundary.center.x - quadtreeCell.boundary.halfDimension
 	var upperXBound = quadtreeCell.boundary.center.x + quadtreeCell.boundary.halfDimension
@@ -67,9 +67,9 @@ func (point Coord) InsideOf(quadtreeCell *quadtree) bool {
 	return false
 }
 
-// NewQuadtree returns a new quadtree
-func NewQuadtree(boundary BoundingBox, depth int) *quadtree {
-	return &quadtree{
+// NewQuadtree returns a new Quadtree
+func NewQuadtree(boundary BoundingBox, depth int) *Quadtree {
+	return &Quadtree{
 		nodeCapacity: 0,
 		boundary:     boundary,
 		pointsSlice:  nil,
@@ -81,7 +81,7 @@ func NewQuadtree(boundary BoundingBox, depth int) *quadtree {
 	}
 }
 
-func (quadtree *quadtree) subdivide() {
+func (quadtree *Quadtree) subdivide() {
 
 	// Create the new NorthWest boundingbox
 	var newCellBoundingNorthWest = BoundingBox{
@@ -124,11 +124,11 @@ func (quadtree *quadtree) subdivide() {
 	quadtree.southEast = NewQuadtree(newCellBoundingSouthEast, quadtree.depth+1)
 }
 
-// Insert inserts the given point into the quadtree the method is applied on
+// Insert inserts the given point into the Quadtree the method is applied on
 // it returns an error incase the point is not in bounds
-func (quadtree *quadtree) Insert(point Coord) {
+func (quadtree *Quadtree) Insert(point Coord) {
 
-	// subdivide the quadtree into four new cells
+	// subdivide the Quadtree into four new cells
 	quadtree.subdivide()
 
 	// if the maxDepth is not reached...
@@ -154,7 +154,7 @@ func (quadtree *quadtree) Insert(point Coord) {
 	quadtree.pointsSlice = append(quadtree.pointsSlice, point)
 }
 
-func (quadtree *quadtree) Print() {
+func (quadtree *Quadtree) Print() {
 	if quadtree.northEast != nil {
 		quadtree.northEast.Print()
 	}
diff --git a/structs_test.go b/structs_test.go
index ceeace7..5b00aa5 100644
--- a/structs_test.go
+++ b/structs_test.go
@@ -7,7 +7,7 @@ import (
 
 // Quadtree Test
 func TestQuadtree(t *testing.T) {
-	testQuadtree := quadtree{
+	testQuadtree := Quadtree{
 		nodeCapacity: 0,
 		boundary:     BoundingBox{},
 		pointsSlice:  nil,
@@ -110,16 +110,16 @@ func TestSubdivide(t *testing.T) {
 
 // test the Insert function
 func TestInsert(t *testing.T) {
-	// Define a new quadtree-root-boundary
+	// Define a new Quadtree-root-boundary
 	var boundary = BoundingBox{
 		center:        Coord{0, 0},
 		halfDimension: 3,
 	}
 
-	// create a new quadtree using the boundary
+	// create a new Quadtree using the boundary
 	var newQuadtree = *NewQuadtree(boundary, 0)
 
-	// Define a star and Insert it into the quadtree
+	// Define a star and Insert it into the Quadtree
 	singleCoord := Coord{0.5, 0.5}
 	newQuadtree.Insert(singleCoord)
 
-- 
cgit 1.4.1