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yomotsu · Mar 21, 2021 · 7f22ee6 · 7f22ee6
1 parent c9ba6c1
commit 7f22ee6
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Showing 3 changed files with 5 additions and 3 deletions.
diff --git a/dist/camera-controls.js b/dist/camera-controls.js
@@ -1024,7 +1024,8 @@
 	                var camera = this._camera;
 	                var worldPosition = _v3A.set(this._dollyControlCoord.x, this._dollyControlCoord.y, (camera.near + camera.far) / (camera.near - camera.far)).unproject(camera);
 	                var quaternion = _v3B.set(0, 0, -1).applyQuaternion(camera.quaternion);
-	                var distance = -worldPosition.dot(camera.up) / quaternion.dot(camera.up);
+	                var divisor = quaternion.dot(camera.up);
+	                var distance = approxZero(divisor) ? -worldPosition.dot(camera.up) : -worldPosition.dot(camera.up) / divisor;
 	                var cursor = _v3C.copy(worldPosition).add(quaternion.multiplyScalar(distance));
 	                this._targetEnd.lerp(cursor, 1 - camera.zoom / this._dollyControlAmount);
 	                this._target.copy(this._targetEnd);

diff --git a/dist/camera-controls.min.js b/dist/camera-controls.min.js
diff --git a/dist/camera-controls.module.js b/dist/camera-controls.module.js
@@ -1018,7 +1018,8 @@ var CameraControls = (function (_super) {
                 var camera = this._camera;
                 var worldPosition = _v3A.set(this._dollyControlCoord.x, this._dollyControlCoord.y, (camera.near + camera.far) / (camera.near - camera.far)).unproject(camera);
                 var quaternion = _v3B.set(0, 0, -1).applyQuaternion(camera.quaternion);
-                var distance = -worldPosition.dot(camera.up) / quaternion.dot(camera.up);
+                var divisor = quaternion.dot(camera.up);
+                var distance = approxZero(divisor) ? -worldPosition.dot(camera.up) : -worldPosition.dot(camera.up) / divisor;
                 var cursor = _v3C.copy(worldPosition).add(quaternion.multiplyScalar(distance));
                 this._targetEnd.lerp(cursor, 1 - camera.zoom / this._dollyControlAmount);
                 this._target.copy(this._targetEnd);