diff --git a/blight-editor/src/main/java/de/blight/editor/EditorApp.java b/blight-editor/src/main/java/de/blight/editor/EditorApp.java
index 7a60ec5..b87334a 100644
--- a/blight-editor/src/main/java/de/blight/editor/EditorApp.java
+++ b/blight-editor/src/main/java/de/blight/editor/EditorApp.java
@@ -7655,13 +7655,15 @@ public class EditorApp extends Application {
         // auch wenn Overlay-Nodes (Tab-Button, Asset-Panel) das Event abfangen würden.
         pane.addEventFilter(javafx.scene.input.MouseEvent.MOUSE_PRESSED, e -> {
             if (e.getButton() == MouseButton.MIDDLE
-                    || (e.isPrimaryButtonDown() && e.isSecondaryButtonDown())) {
+                    || (e.isPrimaryButtonDown() && e.isSecondaryButtonDown())
+                    || (e.getButton() == MouseButton.PRIMARY && e.isAltDown())) {
                 prevDragX = e.getX(); prevDragY = e.getY();
             }
         });
         pane.addEventFilter(javafx.scene.input.MouseEvent.MOUSE_DRAGGED, e -> {
             boolean bothDown = e.isPrimaryButtonDown() && e.isSecondaryButtonDown();
-            if (e.isMiddleButtonDown() || bothDown) {
+            boolean altLeft  = e.isPrimaryButtonDown() && e.isAltDown();
+            if (e.isMiddleButtonDown() || bothDown || altLeft) {
                 double dx = e.getX() - prevDragX;
                 double dy = e.getY() - prevDragY;
                 input.addMouseDelta((int) dx, (int) dy);
@@ -7730,7 +7732,7 @@ public class EditorApp extends Application {
                 }
             } else if (bothDown) {
                 stopEditTimer();
-            } else if (e.getButton() == MouseButton.PRIMARY) {
+            } else if (e.getButton() == MouseButton.PRIMARY && !e.isAltDown()) {
                 if (input.activeLayer == SharedInput.LAYER_PLAY_TOOL) {
                     // Einzel-Klick ohne Edit-Timer (verhindert Dauer-Spam)
                     input.playToolClickQueue.offer(
@@ -7750,7 +7752,7 @@ public class EditorApp extends Application {
         viewport.setOnMouseDragged(e -> {
             if (isObjectMode()) {
                 if (objDragging && e.isPrimaryButtonDown()
-                        && !e.isSecondaryButtonDown() && !e.isMiddleButtonDown()) {
+                        && !e.isSecondaryButtonDown() && !e.isMiddleButtonDown() && !e.isAltDown()) {
                     float dx = (float)(e.getX() - objDragPrevX);
                     float dy = (float)(e.getY() - objDragPrevY);
                     input.objectDragQueue.offer(new SharedInput.ObjectDrag(dx, dy));
diff --git a/blight-editor/src/main/java/de/blight/editor/state/VoxelEditorState.java b/blight-editor/src/main/java/de/blight/editor/state/VoxelEditorState.java
index 9e79f05..f4fa4f3 100644
--- a/blight-editor/src/main/java/de/blight/editor/state/VoxelEditorState.java
+++ b/blight-editor/src/main/java/de/blight/editor/state/VoxelEditorState.java
@@ -596,9 +596,8 @@ public class VoxelEditorState extends BaseAppState {
         Vector3f bestPos  = null;
         Vector3f bestNorm = new Vector3f(0, 1, 0);
 
-        // Im Voxel-Layer nur Voxel-Geometrie und die Basis-Referenzebene treffen,
-        // nicht das Heightmap-Terrain (das würde Voxel auf der falschen Höhe erzeugen).
-        if (terrainNode != null && input.activeLayer != SharedInput.LAYER_VOXEL) {
+        // Terrain immer treffen (auch im Voxel-Layer); Voxel/Baked-Meshes gewinnen per bestDist.
+        if (terrainNode != null) {
             terrainNode.collideWith(ray, results);
             if (results.size() > 0) {
                 CollisionResult cr = results.getClosestCollision();
@@ -695,8 +694,6 @@ public class VoxelEditorState extends BaseAppState {
                 input.markedDeleteBakedKeys.clear();
                 input.markedBakedSelectionDirty = true;
             }
-            input.voxelTool.mode.setSelectedIndex(de.blight.editor.tool.VoxelTool.MODE_SINUS);
-            input.voxelTool.modeChanged = true;
             return;
         }
 
@@ -714,18 +711,14 @@ public class VoxelEditorState extends BaseAppState {
             if (nhLen < 0.1f) return;
         }
 
-        // Plateau-Rechtsklick (nur vertikal): Voxel- und Terrain-Höhe sampeln
+        // Plateau-Rechtsklick (nur vertikal): Raycast-Treffer als Ziel-Höhe verwenden.
+        // wy kommt bereits vom zentralen raycastHit(), der Voxel, Terrain und
+        // gebakte Meshes nach Distanz priorisiert – immer der korrekte Oberflächenpunkt.
         if (!isHorizontal && isColumn && modeIdx == de.blight.editor.tool.VoxelTool.MODE_PLATEAU && lower) {
-            float h = columnTopWorldY(wx, wz);
-            TerrainEditorState tes = getStateManager().getState(TerrainEditorState.class);
-            if (tes != null) {
-                float th = tes.sampleTerrainHeight(new com.jme3.math.Vector3f(wx, wy, wz));
-                if (Float.isFinite(th)) h = Float.isFinite(h) ? Math.max(h, th) : th;
-            }
-            if (Float.isFinite(h)) {
-                input.voxelTool.plateauTarget.setValue(h);
+            if (Float.isFinite(wy)) {
+                input.voxelTool.plateauTarget.setValue(wy);
                 input.voxelTool.plateauTargetChanged = true;
-                input.heightTool.plateauHeight.setValue(h);
+                input.heightTool.plateauHeight.setValue(wy);
                 input.heightTool.plateauHeightChanged = true;
             }
             return;
@@ -752,7 +745,8 @@ public class VoxelEditorState extends BaseAppState {
         // Wenn der Nutzer auf die Basis-Ebene (y=-10) klickt, liegt der Terrain-Ankerpunkt
         // (terrainH ≥ 0) in einem anderen cy als der Hit-Punkt → Voxel würden sonst nie gesetzt.
         if (isColumn && !isHorizontal && !isCave) {
-            float anchorY  = Math.max(terrainH(wx, wz), wy);
+            float th       = terrainH(wx, wz);
+            float anchorY  = hasTerrainMesh() ? Math.max(th, wy) : wy;
             int   anchorCy = VoxelChunk.worldYToCy(anchorY);
             cyMin = Math.min(cyMin, anchorCy);
             cyMax = Math.max(cyMax, anchorCy);
@@ -802,10 +796,10 @@ public class VoxelEditorState extends BaseAppState {
                         applyColumnToTarget(chunk, cx, cy, cz, wx, wz, radius, strength, coord -> target);
                     } else if (modeIdx == de.blight.editor.tool.VoxelTool.MODE_SMOOTH) {
                         if (lower) {
-                            // RMB: Durchschnitt-Smooth (wie vormals LMB)
+                            // RMB: Durchschnitt-Smooth
                             applySmoothColumn(chunk, cx, cy, cz, wx, wz, radius, strength, slopeParams);
                         } else {
-                            // LMB: gleichmäßiger Slope vom höchsten Außenring-Punkt zum Gegenpunkt
+                            // LMB: Slope vom höchsten Außenring-Punkt zum Gegenpunkt
                             applySlopeColumn(chunk, cx, cy, cz, wx, wz, radius, strength, slopeParams);
                         }
                     } else {
@@ -915,8 +909,9 @@ public class VoxelEditorState extends BaseAppState {
         int z1 = Math.min(VoxelChunk.SIZE - 1, (int) Math.ceil(lzC + radius));
         float r2 = radius * radius;
 
-        // Schritt pro Event: strength bestimmt die Wachstumsgeschwindigkeit
-        float stepBase = Math.max(1f, strength / 8f);
+        // Mindestens 6 Voxel am Zentrum, damit die Falloff-Kurve diskret sichtbar wird.
+        // Analogie zum Terrain-Tool: delta*falloff direkt addieren, ohne Integer-Minimum.
+        float stepBase = Math.max(6f, strength / 5f);
 
         for (int lz = z0; lz <= z1; lz++) {
             float wz = VoxelChunk.toWorldZ(cz, lz);
@@ -929,8 +924,11 @@ public class VoxelEditorState extends BaseAppState {
 
                 float t = (float) Math.sqrt(d2) / radius;
                 float falloff = computeFalloff(mode, t);
-                // Mindestens 1, damit Kanten-Spalten nicht komplett übersprungen werden
-                int colStep = Math.max(1, (int)(stepBase * falloff));
+                // Spalten mit vernachlässigbarem falloff überspringen (erzeugt Profil-Form statt Plateau).
+                // Analog zum Terrain-Tool, das ebenfalls kein Minimum anwendet.
+                float colStepF = stepBase * falloff;
+                if (colStepF < 0.5f) continue;
+                int colStep = Math.round(colStepF);
 
                 if (!lower) {
                     // Höchsten Solid-Voxel in dieser Spalte suchen
@@ -939,11 +937,10 @@ public class VoxelEditorState extends BaseAppState {
                         if (chunk.getDensity(lx, ly, lz) > 0) { currentTop = ly; break; }
                     }
                     if (currentTop < 0) {
-                        // Ankerpunkt: Terrain-Oberfläche ODER gebackenes Terrain (brushHitWY),
-                        // je nachdem was höher liegt. So starten neue Voxel sichtbar über
-                        // bestehendem gebackenem Terrain statt darunter.
+                        // Ankerpunkt: Terrain-Oberfläche ODER Klickpunkt (brushHitWY).
+                        // Ohne Terrain-Mesh: direkt brushHitWY nutzen (terrainH liefert nur 0 als Fallback).
                         float th     = terrainH(wx, wz);
-                        float anchor = Math.max(th, brushHitWY);
+                        float anchor = hasTerrainMesh() ? Math.max(th, brushHitWY) : brushHitWY;
                         int   aCy    = VoxelChunk.worldYToCy(anchor);
                         if (cy == aCy) {
                             currentTop = Math.max(0, Math.min(VoxelChunk.SIZE - 1,
@@ -1115,6 +1112,10 @@ public class VoxelEditorState extends BaseAppState {
         return 0f;
     }
 
+    private boolean hasTerrainMesh() {
+        return terrainEditorState != null || terrainQuad != null;
+    }
+
     // ── Smooth-Modus ──────────────────────────────────────────────────────────
 
     /**
@@ -1298,19 +1299,76 @@ public class VoxelEditorState extends BaseAppState {
     }
 
     /**
-     * Smooth-Pinsel (Linksklick): bewegt alle Spalten im Pinselbereich auf die
-     * Durchschnittshöhe aller Spalten zu (sp[6]).
-     *
-     * Spikes (Spalten über dem Durchschnitt) werden abgebaut, tiefe Stellen
-     * leicht angehoben. Dadurch entsteht eine gleichmäßig geebnte Fläche,
-     * ohne dass neues Material an Stellen aufgebaut wird, die bereits flach sind.
+     * Smooth-Pinsel (RMB): exakter Port von TerrainEditorState.smoothHeight().
+     * blend = clamp((1-t) * strength/5, 0, 1) — linearer Falloff.
+     * Faktor 5 statt 50 (wie Terrain): Voxel-Höhen sind Integer, d.h. 0,2-Deltas
+     * würden auf 0 runden → Tool tut nichts. 10× stärker = gleiches Verhalten.
+     * delta = (avg - top) * blend — proportionale Bewegung zur Durchschnittshöhe.
+     * Für leere Spalten wird terrainH als Baseline verwendet (gleich wie computeSlopeParams).
      */
     private void applySmoothColumn(VoxelChunk chunk, int cx, int cy, int cz,
                                     float brushWX, float brushWZ,
                                     float radius, float strength, float[] sp) {
         if (sp == null || Float.isNaN(sp[6])) return;
-        final float targetH = sp[6];
-        applyColumnToTarget(chunk, cx, cy, cz, brushWX, brushWZ, radius, strength, coord -> targetH);
+        final float avgH = sp[6];
+
+        float lxC = VoxelChunk.worldXToLocal(brushWX, cx);
+        float lzC = VoxelChunk.worldZToLocal(brushWZ, cz);
+        int x0 = Math.max(0, (int)(lxC - radius));
+        int x1 = Math.min(VoxelChunk.SIZE - 1, (int) Math.ceil(lxC + radius));
+        int z0 = Math.max(0, (int)(lzC - radius));
+        int z1 = Math.min(VoxelChunk.SIZE - 1, (int) Math.ceil(lzC + radius));
+        float r2 = radius * radius;
+
+        for (int lz = z0; lz <= z1; lz++) {
+            float wz = VoxelChunk.toWorldZ(cz, lz);
+            float dz = wz - brushWZ;
+            for (int lx = x0; lx <= x1; lx++) {
+                float wx = VoxelChunk.toWorldX(cx, lx);
+                float dx = wx - brushWX;
+                float d2 = dx*dx + dz*dz;
+                if (d2 > r2) continue;
+
+                float t     = (float) Math.sqrt(d2) / radius;
+                float blend = Math.max(0f, Math.min(1f, (1f - t) * (strength / 5f)));
+                if (blend < 0.001f) continue;
+
+                int currentTopLY = -1;
+                for (int ly = VoxelChunk.SIZE - 1; ly >= 0; ly--) {
+                    if (chunk.getDensity(lx, ly, lz) > 0) { currentTopLY = ly; break; }
+                }
+
+                float currentTopWY;
+                int   startLY;
+                if (currentTopLY >= 0) {
+                    currentTopWY = VoxelChunk.toWorldY(cy, currentTopLY);
+                    startLY      = currentTopLY;
+                } else {
+                    // Kein Voxel: Basis-Terrain als Höhenreferenz
+                    float th = terrainH(wx, wz);
+                    if (!Float.isFinite(th)) continue;
+                    int thCy = VoxelChunk.worldYToCy(th);
+                    if (cy != thCy) continue; // Terrain-Oberfläche in anderem Chunk
+                    currentTopWY = th;
+                    startLY      = Math.max(0, Math.min(VoxelChunk.SIZE - 1,
+                                            (int)(th - cy * (float) VoxelChunk.CELLS)));
+                }
+
+                int step = (int) Math.round((avgH - currentTopWY) * blend);
+                if (step == 0) continue;
+
+                if (step > 0) {
+                    int newTop = Math.min(VoxelChunk.SIZE - 1, startLY + step);
+                    for (int ly = startLY; ly <= newTop; ly++)
+                        chunk.setDensity(lx, ly, lz, (byte) 127);
+                } else {
+                    if (currentTopLY < 0) continue; // nix zum Abbauen
+                    int newTop = Math.max(0, currentTopLY + step);
+                    for (int ly = newTop + 1; ly <= currentTopLY; ly++)
+                        chunk.setDensity(lx, ly, lz, Byte.MIN_VALUE);
+                }
+            }
+        }
     }
 
     /**
@@ -1350,8 +1408,9 @@ public class VoxelEditorState extends BaseAppState {
     }
 
     /**
-     * Slope-Pinsel (Smooth-Linksklick): gleichmäßige Neigung vom höchsten Außenring-Punkt
-     * zum geometrisch gegenüberliegenden Punkt.
+     * Slope-Pinsel (LMB): port von TerrainEditorState.slopeHeight().
+     * delta = (target - top) * clamp(cosine_falloff * strength/50, 0, 1).
+     * Ziel-Höhe per linearer Interpolation entlang der Neigungsachse.
      */
     private void applySlopeColumn(VoxelChunk chunk, int cx, int cy, int cz,
                                    float brushWX, float brushWZ,
@@ -1362,11 +1421,67 @@ public class VoxelEditorState extends BaseAppState {
         final float projRange = projHigh - projOpp;
         if (projRange < 0.5f) return;
 
-        applyColumnToTarget(chunk, cx, cy, cz, brushWX, brushWZ, radius, strength, coord -> {
-            float proj = coord[0] * dirX + coord[1] * dirZ;
-            float t = Math.max(0f, Math.min(1f, (proj - projOpp) / projRange));
-            return oppH + t * (highH - oppH);
-        });
+        float lxC = VoxelChunk.worldXToLocal(brushWX, cx);
+        float lzC = VoxelChunk.worldZToLocal(brushWZ, cz);
+        int x0 = Math.max(0, (int)(lxC - radius));
+        int x1 = Math.min(VoxelChunk.SIZE - 1, (int) Math.ceil(lxC + radius));
+        int z0 = Math.max(0, (int)(lzC - radius));
+        int z1 = Math.min(VoxelChunk.SIZE - 1, (int) Math.ceil(lzC + radius));
+        float r2 = radius * radius;
+
+        for (int lz = z0; lz <= z1; lz++) {
+            float wz = VoxelChunk.toWorldZ(cz, lz);
+            float dz = wz - brushWZ;
+            for (int lx = x0; lx <= x1; lx++) {
+                float wx = VoxelChunk.toWorldX(cx, lx);
+                float dx = wx - brushWX;
+                float d2 = dx*dx + dz*dz;
+                if (d2 > r2) continue;
+
+                float t       = (float) Math.sqrt(d2) / radius;
+                float falloff = (float)(0.5 * (1.0 + Math.cos(t * Math.PI)));
+                float blend   = Math.max(0f, Math.min(1f, falloff * (strength / 5f)));
+                if (blend < 0.001f) continue;
+
+                float proj    = dx * dirX + dz * dirZ;
+                float slopeT  = Math.max(0f, Math.min(1f, (proj - projOpp) / projRange));
+                float targetH = oppH + slopeT * (highH - oppH);
+
+                int currentTopLY = -1;
+                for (int ly = VoxelChunk.SIZE - 1; ly >= 0; ly--) {
+                    if (chunk.getDensity(lx, ly, lz) > 0) { currentTopLY = ly; break; }
+                }
+
+                float currentTopWY;
+                int   startLY;
+                if (currentTopLY >= 0) {
+                    currentTopWY = VoxelChunk.toWorldY(cy, currentTopLY);
+                    startLY      = currentTopLY;
+                } else {
+                    float th = terrainH(wx, wz);
+                    if (!Float.isFinite(th)) continue;
+                    int thCy = VoxelChunk.worldYToCy(th);
+                    if (cy != thCy) continue;
+                    currentTopWY = th;
+                    startLY      = Math.max(0, Math.min(VoxelChunk.SIZE - 1,
+                                            (int)(th - cy * (float) VoxelChunk.CELLS)));
+                }
+
+                int step = (int) Math.round((targetH - currentTopWY) * blend);
+                if (step == 0) continue;
+
+                if (step > 0) {
+                    int newTop = Math.min(VoxelChunk.SIZE - 1, startLY + step);
+                    for (int ly = startLY; ly <= newTop; ly++)
+                        chunk.setDensity(lx, ly, lz, (byte) 127);
+                } else {
+                    if (currentTopLY < 0) continue;
+                    int newTop = Math.max(0, currentTopLY + step);
+                    for (int ly = newTop + 1; ly <= currentTopLY; ly++)
+                        chunk.setDensity(lx, ly, lz, Byte.MIN_VALUE);
+                }
+            }
+        }
     }
 
     // ── Intern: Voxel-Bake ────────────────────────────────────────────────────
@@ -1485,54 +1600,142 @@ public class VoxelEditorState extends BaseAppState {
             input.blurIterDone = iter + 1;
         }
 
-        // ── Flachbereich-Glättung: 3 reine Gauß-Passes nur nahe der Isofläche ──────
-        // Der bilaterale Filter bewahrt scharfe Kanten (Klippen), glättet jedoch die
-        // Dichte-Sprünge an der Isofläche (127 → -128) kaum, da die Differenz (255) das
-        // bilaterale Gewicht auf ~0 senkt. Auf flachen Flächen entstehen dadurch Stufen.
-        // Diese reinen Gauß-Passes (keine bilaterale Gewichtung) glätten gezielt Voxel,
-        // die (a) nahe der Oberfläche liegen und (b) eine überwiegend vertikale Normale haben.
+        // ── Neigungsadaptive Oberflächenverarbeitung (Regressions-Ansatz) ────────
+        //
+        // Warum XZ-Blur nicht funktioniert:
+        //   XZ-Blur verschiebt Dichten lateral, aber die Marching-Cubes-Isofläche
+        //   liegt immer zwischen zwei Voxeln, wo einer positiv und einer negativ ist.
+        //   Stufenfronten bestehen aus Voxeln, die auf beiden Seiten der Stufe je
+        //   einheitlich positiv bzw. negativ sind → die Isofläche bleibt an exakt
+        //   denselben ganzzahligen Positionen, egal wie oft man XZ-blurt.
+        //
+        // Richtige Lösung: density = (smoothH − worldY) × 127 einschreiben.
+        //   Damit kann MC die Isofläche auf sub-voxel-genaue Positionen legen.
+        //
+        // Klassifikation via linearer Regression (2D-Ebene durch ±W-Fenster):
+        //   • totalSlope < MIN_SLOPE (≈ 3°): Flachfläche – keine Korrektur nötig.
+        //   • MIN_SLOPE ≤ totalSlope < TAN_22,5°: Sanfte Steigung → Dichte schreiben.
+        //   • totalSlope > TAN_45°:              Steile Klippe  → Noise.
+        //   • |smoothH − h0| > 0,6:              Hügelkuppe / Senke – überspringen
+        //     (verhindert, dass lokale Extrema durch weit entfernte Werte abgezogen
+        //      werden; Regressions-Abweichung an Stufenfronten liegt bei ≤ 0,46).
         {
-            final float SURF_BAND  = 80f;   // |dichte| < SURF_BAND → nahe der Isofläche
-            final float COS_30     = 0.866f; // cos(30°) – Grenze "flache Fläche"
-            for (int flatPass = 0; flatPass < 3; flatPass++) {
+            final float TAN_22_5  = 0.414f; // tan(22,5°)
+            final float TAN_45    = 1.000f; // tan(45°)
+            final float MIN_SLOPE = 0.05f;  // < ~3° → komplett flach, nicht anfassen
+            java.util.Random rng = new java.util.Random(42);
+            final int C = VoxelChunk.CELLS;
+            final int W = 5;                // Regressions-Halbfenster (±5 Spalten)
+
+            // ── Schritt 1: Höhenfeld ──────────────────────────────────────────
+            // Key-Schema: (cx*C + bx + 30000) * 60001 + (cz*C + bz + 30000)
+            // Überlapp-Voxel (bx = CELLS) werden ausgelassen.
+            Map<Long, Integer> hfMap = new HashMap<>();
+            for (VoxelChunk c : nonEmpty) {
+                long k = chunkKey(c.cx, c.cy, c.cz);
+                float[] buf = curBufs.get(k);
+                for (int bz = 0; bz < C; bz++) {
+                    for (int bx = 0; bx < C; bx++) {
+                        for (int by = blurN - 1; by >= 0; by--) {
+                            if (buf[c.idx(bx, by, bz)] > 0) {
+                                int wiy = c.cy * C + by;
+                                long hk = (long)(c.cx * C + bx + 30000) * 60001L
+                                        + (c.cz * C + bz + 30000);
+                                hfMap.merge(hk, wiy, Math::max);
+                                break;
+                            }
+                        }
+                    }
+                }
+            }
+
+            // ── Schritt 2: Lineare 2D-Regression je Spalte ───────────────────
+            // Fit: H(dx,dz) = a + b·dx + c·dz  (zentriert auf Spaltenmitte).
+            // a   = meanH      → sub-voxel-genaue Ziel-Höhe (smoothH)
+            // b   = slopeX,  c = slopeZ
+            // totalSlope = sqrt(b²+c²)  → Gesamt-Neigung des Ebenen-Fits
+            //
+            // Warum Regression besser als Max-Slope:
+            //   Max-Slope wird von den UNMITTELBAREN Nachbarn dominiert (die bei
+            //   einer Stufe ±1 Voxel haben → slope = 1,0 > TAN_22,5°).
+            //   Die Regression sieht das gesamte ±5-Fenster und klassifiziert
+            //   die Stufe korrekt als sanfte Steigung (slope ≈ 0,14 für 3er-Stufen).
+            //
+            // regMap[0] = smoothH, regMap[1] = totalSlope
+            Map<Long, float[]> regMap = new HashMap<>(hfMap.size());
+            for (Map.Entry<Long, Integer> entry : hfMap.entrySet()) {
+                long hk0 = entry.getKey();
+                int  h0  = entry.getValue();
+                int  colZ = (int)(hk0 % 60001L) - 30000;
+                int  colX = (int)(hk0 / 60001L) - 30000;
+
+                float sumH = 0f, sumDxH = 0f, sumDzH = 0f;
+                float sumDx2 = 0f, sumDz2 = 0f;
+                int cnt = 0;
+                for (int dz = -W; dz <= W; dz++) {
+                    for (int dx = -W; dx <= W; dx++) {
+                        long hkN = (long)(colX + dx + 30000) * 60001L + (colZ + dz + 30000);
+                        Integer hN = hfMap.get(hkN);
+                        if (hN == null) continue;
+                        sumH   += hN;
+                        sumDxH += (float)dx * hN;
+                        sumDzH += (float)dz * hN;
+                        sumDx2 += dx * dx;
+                        sumDz2 += dz * dz;
+                        cnt++;
+                    }
+                }
+                if (cnt < 4) {
+                    regMap.put(hk0, new float[]{ h0, 99f });
+                    continue;
+                }
+                float meanH      = sumH / cnt;
+                float slopeX     = (sumDx2 > 0f) ? sumDxH / sumDx2 : 0f;
+                float slopeZ     = (sumDz2 > 0f) ? sumDzH / sumDz2 : 0f;
+                float totalSlope = (float) Math.sqrt(slopeX * slopeX + slopeZ * slopeZ);
+                regMap.put(hk0, new float[]{ meanH, totalSlope });
+            }
+
+            // ── Schritt 3: Dichte anpassen ────────────────────────────────────
+            {
                 Map<Long, float[]> nextBufs = new HashMap<>();
                 for (VoxelChunk c : nonEmpty) {
                     long k = chunkKey(c.cx, c.cy, c.cz);
                     float[] cur  = curBufs.get(k);
                     float[] next = Arrays.copyOf(cur, cur.length);
-                    for (int by = 0; by < blurN; by++) {
-                        for (int bz = 0; bz < blurN; bz++) {
-                            for (int bx = 0; bx < blurN; bx++) {
-                                float d = cur[c.idx(bx, by, bz)];
-                                if (Math.abs(d) >= SURF_BAND) continue;
+                    int wiyBase  = c.cy * C;
 
-                                // Gradient über zentrale Differenzen
-                                float gx = getBlurBuf(curBufs, allOriginal, c, bx+1, by, bz)
-                                         - getBlurBuf(curBufs, allOriginal, c, bx-1, by, bz);
-                                float gy = getBlurBuf(curBufs, allOriginal, c, bx, by+1, bz)
-                                         - getBlurBuf(curBufs, allOriginal, c, bx, by-1, bz);
-                                float gz = getBlurBuf(curBufs, allOriginal, c, bx, by, bz+1)
-                                         - getBlurBuf(curBufs, allOriginal, c, bx, by, bz-1);
-                                float gLen = (float) Math.sqrt(gx*gx + gy*gy + gz*gz);
-                                if (gLen < 1f) continue;
-                                float normY = Math.abs(gy) / gLen;
-                                if (normY < COS_30) continue; // steile Fläche → nicht glätten
+                    for (int bz = 0; bz < C; bz++) {
+                        int colZ = c.cz * C + bz;
+                        for (int bx = 0; bx < C; bx++) {
+                            int  colX = c.cx * C + bx;
+                            long hk0  = (long)(colX + 30000) * 60001L + (colZ + 30000);
+                            Integer h0  = hfMap.get(hk0);
+                            float[] reg = regMap.get(hk0);
+                            if (h0 == null || reg == null) continue;
 
-                                float vSum = 0f;
-                                int   cnt  = 0;
-                                for (int dy = -1; dy <= 1; dy++)
-                                    for (int dz = -1; dz <= 1; dz++)
-                                        for (int dx = -1; dx <= 1; dx++) {
-                                            int sx = bx+dx, sy = by+dy, sz = bz+dz;
-                                            float nb;
-                                            if (sx >= 0 && sx < blurN && sy >= 0 && sy < blurN && sz >= 0 && sz < blurN)
-                                                nb = cur[c.idx(sx, sy, sz)];
-                                            else
-                                                nb = getBlurBuf(curBufs, allOriginal, c, sx, sy, sz);
-                                            vSum += nb;
-                                            cnt++;
-                                        }
-                                next[c.idx(bx, by, bz)] = vSum / cnt;
+                            float smoothH    = reg[0];
+                            float totalSlope = reg[1];
+                            float diff       = smoothH - h0;
+
+                            if (totalSlope >= MIN_SLOPE && totalSlope < TAN_22_5
+                                    && Math.abs(diff) <= 0.6f) {
+                                // Sanfte Steigung: sub-voxel-genauen Dichte-Gradienten schreiben.
+                                // MC interpoliert die Isofläche dann auf die genaue smoothH-Höhe.
+                                for (int by = 0; by < blurN; by++) {
+                                    float d = (smoothH - (wiyBase + by)) * 127f;
+                                    next[c.idx(bx, by, bz)] = Math.max(-128f, Math.min(127f, d));
+                                }
+                            } else if (totalSlope > TAN_45) {
+                                // Steile Klippe: Noise für organische Optik
+                                int surfBy = h0 - wiyBase;
+                                if (surfBy < 0 || surfBy >= blurN) continue;
+                                for (int by = Math.max(0, surfBy - 2);
+                                         by <= Math.min(blurN - 1, surfBy + 2); by++) {
+                                    float noise = (float)(rng.nextGaussian() * 20.0);
+                                    float val   = cur[c.idx(bx, by, bz)] + noise;
+                                    next[c.idx(bx, by, bz)] = Math.max(-128f, Math.min(127f, val));
+                                }
                             }
                         }
                     }
@@ -1540,6 +1743,28 @@ public class VoxelEditorState extends BaseAppState {
                 }
                 curBufs = nextBufs;
             }
+
+            // ── Schritt 4: Überlapp-Voxel synchronisieren ────────────────────
+            for (VoxelChunk c : nonEmpty) {
+                long ck   = chunkKey(c.cx, c.cy, c.cz);
+                float[] cBuf = curBufs.get(ck);
+                float[] rBuf = curBufs.get(chunkKey(c.cx + 1, c.cy, c.cz));
+                if (rBuf != null) {
+                    for (int by = 0; by < blurN; by++) {
+                        for (int bz = 0; bz < blurN; bz++) {
+                            cBuf[c.idx(VoxelChunk.CELLS, by, bz)] = rBuf[c.idx(0, by, bz)];
+                        }
+                    }
+                }
+                float[] fBuf = curBufs.get(chunkKey(c.cx, c.cy, c.cz + 1));
+                if (fBuf != null) {
+                    for (int by = 0; by < blurN; by++) {
+                        for (int bx = 0; bx < blurN; bx++) {
+                            cBuf[c.idx(bx, by, VoxelChunk.CELLS)] = fBuf[c.idx(bx, by, 0)];
+                        }
+                    }
+                }
+            }
         }
 
         // Blur-Ergebnisse in VoxelChunks umwandeln
@@ -1906,8 +2131,10 @@ public class VoxelEditorState extends BaseAppState {
 
     private float computeFalloff(int mode, float t) {
         return switch (mode) {
-            case de.blight.editor.tool.VoxelTool.MODE_SINUS  -> (float) Math.cos(t * Math.PI / 2);
-            case de.blight.editor.tool.VoxelTool.MODE_SPIKE  -> (1f - t) * (1f - t);
+            // identisch mit dem Terrain-Tool: (1+cos(π·t))/2 → weiches Glöckchen
+            case de.blight.editor.tool.VoxelTool.MODE_SINUS  -> (float)(0.5 * (1 + Math.cos(Math.PI * t)));
+            // identisch mit dem Terrain-Tool: (1-t)^4 → steiler Kegel
+            case de.blight.editor.tool.VoxelTool.MODE_SPIKE  -> { float u = 1f - t; yield u * u * u * u; }
             case de.blight.editor.tool.VoxelTool.MODE_SMOOTH -> (float)(0.5 * (1 + Math.cos(t * Math.PI)));
             default -> 1f; // PLATEAU
         };
diff --git a/blight-map/src/main/map/blight_grass_vertex.blgv b/blight-map/src/main/map/blight_grass_vertex.blgv
index 7b76825..320c872 100644
Binary files a/blight-map/src/main/map/blight_grass_vertex.blgv and b/blight-map/src/main/map/blight_grass_vertex.blgv differ
diff --git a/blight-map/src/main/map/blight_map.blm b/blight-map/src/main/map/blight_map.blm
index 5f6db40..dfe2096 100644
Binary files a/blight-map/src/main/map/blight_map.blm and b/blight-map/src/main/map/blight_map.blm differ
diff --git a/blight-map/src/main/map/blight_objects.blo b/blight-map/src/main/map/blight_objects.blo
index b9789b5..ea898e7 100644
--- a/blight-map/src/main/map/blight_objects.blo
+++ b/blight-map/src/main/map/blight_objects.blo
@@ -4,4 +4,4 @@ Models/trees/pine/medium/pine_medium_20260706_190947.j3o	-6.42357	1.22971	-1318.
 Models/trees/pine/medium/pine_medium_20260706_190953.j3o	-17.84356	1.24567	-1316.45410	0.26793	1.00000	0.00000	0.00000	false						true	true			30.00000	80.00000	120.00000		
 Models/plants/misc/kaktusfeige.j3o	-6.18754	1.22995	-1320.34875	0.00000	2.50000	0.00000	0.00000	true						true	true			30.00000	80.00000	120.00000		
 Models/imported/alter_steg.j3o	-8.42317	-0.11015	-1359.15662	3.14159	1.00000	0.00000	0.00000	true						true	true			30.00000	80.00000	120.00000		
-Models/trees/grapevine/grapevine_20260725_195635.j3o	-85.78869	1.32939	-1297.17883	0.00000	1.00000	0.00000	0.00000	false						true	true			30.00000	80.00000	120.00000		
+Models/trees/grapevine/grapevine_20260725_195635.j3o	-85.78869	1.32641	-1297.17883	0.00000	1.00000	0.00000	0.00000	false						true	true			30.00000	80.00000	120.00000		
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