cell count cached

src/engine/InterestManagement/HeightMap.java

@@ -56,6 +56,8 @@ public class HeightMap {
     public float bucketWidthY;
     public float seaLevel = 0;
     public int[][] pixelColorValues;
+    public int bucketCountX;
+    public int bucketCountY;
 
     public float zone_minBlend;
     public float zone_maxBlend;
@@ -95,13 +97,11 @@ public class HeightMap {
 
         // Calculate the data we do not load from table
 
-        float numOfBucketsX = this.heightmapImage.getWidth() - 1;
-        float calculatedWidthX = this.fullExtentsX / numOfBucketsX;
-        this.bucketWidthX = calculatedWidthX;
+        bucketCountX = this.heightmapImage.getWidth() - 1;
+        this.bucketWidthX = this.fullExtentsX / bucketCountX;
 
-        float numOfBucketsY = this.heightmapImage.getHeight() - 1;
-        float calculatedWidthY = this.fullExtentsY / numOfBucketsY;
-        this.bucketWidthY = calculatedWidthY;
+        bucketCountY = this.heightmapImage.getHeight() - 1;
+        this.bucketWidthY = this.fullExtentsY / bucketCountY;
 
         // Generate pixel array from image data
 
@@ -325,22 +325,16 @@ public class HeightMap {
 
     public Vector2f getGridSquare(Vector2f zoneLoc) {
 
-        // Clamp values.
-
-        if (zoneLoc.x < 0)
-            zoneLoc.setX(0);
-
-        if (zoneLoc.x >= this.fullExtentsX)
-            zoneLoc.setX(this.fullExtentsX);
+        float xBucket = (zoneLoc.x / this.bucketWidthX);
+        float yBucket = (zoneLoc.y / this.bucketWidthY);
 
-        if (zoneLoc.y < 0)
-            zoneLoc.setY(0);
+        // Standing on the pole
 
-        if (zoneLoc.y > this.fullExtentsY)
-            zoneLoc.setY(this.fullExtentsY);
+        if (xBucket == this.bucketCountX)
+            xBucket--;
 
-        float xBucket = (zoneLoc.x / this.bucketWidthX);
-        float yBucket = (zoneLoc.y / this.bucketWidthY);
+        if (yBucket == this.bucketCountY)
+            yBucket--;
 
         return new Vector2f(xBucket, yBucket);
     }