Fix camera issues with worlds that have their general height below 0

Author: TBlueF

BlueMapCommon/webapp/src/js/controls/map/MapControls.js

@@ -145,7 +145,7 @@ export class MapControls {
      * @param map {Map}
      */
     update(delta, map) {
-        this.manager.position.y = 0; // reset target y position
+        this.manager.position.y = -10000; // reset target y position
 
         // move
         MapControls._beforeMoveTemp.copy(this.manager.position);

BlueMapCommon/webapp/src/js/controls/map/MapHeightControls.js

@@ -24,6 +24,7 @@
  */
 
 import {MathUtils, Vector2} from "three";
+import {distance} from "three/addons/nodes/shadernode/ShaderNodeBaseElements";
 
 export class MapHeightControls {
 
@@ -93,7 +94,7 @@ export class MapHeightControls {
         }
 
         // adjust targetHeight by distance
-        this.distanceTagretHeight = Math.max(MathUtils.lerp(this.targetHeight, 0, this.manager.distance / 500), 0);
+        this.distanceTagretHeight = MathUtils.lerp(this.targetHeight, 0, Math.min(this.manager.distance / 500, 1));
     }
 
     getSuggestedHeight() {