From 2efe1119117c7847d728ae0467ed4502d2b2d4de Mon Sep 17 00:00:00 2001
From: Gui <51219838+gui-ace@users.noreply.github.com>
Date: Wed, 9 Sep 2026 12:09:09 +0900
Subject: [PATCH] =?UTF-8?q?=E6=8B=A1=E5=A4=A7=E3=82=BF=E3=82=A4=E3=83=AB?=
 =?UTF-8?q?=E3=81=AE=E7=AF=84=E5=9B=B2=E6=9B=B4=E6=96=B0=E3=81=A7=E5=BA=A7?=
 =?UTF-8?q?=E6=A8=99=E3=82=92=E4=BA=8C=E9=87=8D=E7=B8=AE=E5=B0=8F=E3=81=99?=
 =?UTF-8?q?=E3=82=8B=E4=B8=8D=E5=85=B7=E5=90=88=E3=82=92=E4=BF=AE=E6=AD=A3?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 .../org/dynmap/hdmap/IsoHDPerspective.java    |  4 +-
 .../hdmap/IsoHDPerspectiveTileCoordsTest.java | 69 +++++++++++++++++++
 2 files changed, 71 insertions(+), 2 deletions(-)
 create mode 100644 DynmapCore/src/test/java/org/dynmap/hdmap/IsoHDPerspectiveTileCoordsTest.java

diff --git a/DynmapCore/src/main/java/org/dynmap/hdmap/IsoHDPerspective.java b/DynmapCore/src/main/java/org/dynmap/hdmap/IsoHDPerspective.java
index 101f0e12f..4ed045661 100644
--- a/DynmapCore/src/main/java/org/dynmap/hdmap/IsoHDPerspective.java
+++ b/DynmapCore/src/main/java/org/dynmap/hdmap/IsoHDPerspective.java
@@ -1126,8 +1126,8 @@ public List<TileFlags.TileCoord> getTileCoords(DynmapWorld world, int minx, int
                 for(int k = 0; k < 2; k++) {
                     corner.z = blocks[k].z;
                     world_to_map.transform(corner, tcorner);  /* Get map coordinate of corner */
-                    int tx = fastFloor(tcorner.x/(tileSize << tilescale));
-                    int ty = fastFloor(tcorner.y/(tileSize << tilescale));
+                    int tx = fastFloor(tcorner.x/tileSize);
+                    int ty = fastFloor(tcorner.y/tileSize);
                     if(mintilex > tx) mintilex = tx;
                     if(maxtilex < tx) maxtilex = tx;
                     if(mintiley > ty) mintiley = ty;
diff --git a/DynmapCore/src/test/java/org/dynmap/hdmap/IsoHDPerspectiveTileCoordsTest.java b/DynmapCore/src/test/java/org/dynmap/hdmap/IsoHDPerspectiveTileCoordsTest.java
new file mode 100644
index 000000000..3c93b875e
--- /dev/null
+++ b/DynmapCore/src/test/java/org/dynmap/hdmap/IsoHDPerspectiveTileCoordsTest.java
@@ -0,0 +1,69 @@
+package org.dynmap.hdmap;
+
+import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.assertTrue;
+
+import java.util.HashSet;
+import java.util.List;
+import java.util.Set;
+
+import org.dynmap.ConfigurationNode;
+import org.dynmap.utils.TileFlags.TileCoord;
+import org.junit.Test;
+
+public class IsoHDPerspectiveTileCoordsTest {
+    private IsoHDPerspective perspective(double azimuth, double inclination, double scale) {
+        ConfigurationNode config = new ConfigurationNode();
+        config.put("name", "tile-coordinates-test");
+        config.put("azimuth", azimuth);
+        config.put("inclination", inclination);
+        config.put("scale", scale);
+        return new IsoHDPerspective(null, config);
+    }
+
+    @Test
+    public void scaledRangeUsesSameTileSizeAsPointUpdate() {
+        IsoHDPerspective p = perspective(180, 90, 4);
+        List<TileCoord> point = p.getTileCoords(null, 1025, 64, 1025, 2);
+        assertEquals(1, point.size());
+        assertEquals(8, point.get(0).x);
+        assertEquals(-9, point.get(0).y);
+        List<TileCoord> range = p.getTileCoords(null, 1025, 64, 1025, 1025, 64, 1025, 2);
+        assertTrue(range.containsAll(point));
+        assertEquals(3, range.size());
+        for (TileCoord tile : range) {
+            assertEquals(8, tile.x);
+            assertTrue(tile.y >= -10 && tile.y <= -8);
+        }
+    }
+
+    @Test
+    public void rangesCoverEveryBlockAcrossScalesPerspectivesAndBoundaries() {
+        double[][] views = {{180, 90, 4}, {135, 60, 16}, {45, 30, 1}, {0, 20, 64}};
+        for (double[] view : views) {
+            IsoHDPerspective p = perspective(view[0], view[1], view[2]);
+            for (int scale = 0; scale <= 4; scale++) {
+                int boundary = 128 << scale;
+                int[] positions = {-boundary - 1, -boundary, -1, 0, boundary - 1, boundary, 1025};
+                for (int x : positions) {
+                    for (int z : positions) {
+                        for (int y : new int[] {-64, 64, 319}) {
+                            Set<TileCoord> range = new HashSet<>(p.getTileCoords(null,
+                                    x, y, z, x + 2, y + 2, z + 2, scale));
+                            for (int dx = 0; dx <= 2; dx++) {
+                                for (int dy = 0; dy <= 2; dy++) {
+                                    for (int dz = 0; dz <= 2; dz++) {
+                                        assertTrue("Missing point tile: scale=" + scale + ", x=" + x
+                                                + ", y=" + y + ", z=" + z,
+                                                range.containsAll(p.getTileCoords(null,
+                                                        x + dx, y + dy, z + dz, scale)));
+                                    }
+                                }
+                            }
+                        }
+                    }
+                }
+            }
+        }
+    }
+}