Revert adjustZPlanes globe change

common/api/core-frontend.api.md

@@ -1386,7 +1386,7 @@ export class BackgroundMapGeometry {
     // (undocumented)
     getEarthEllipsoid(radiusOffset?: number): Ellipsoid;
     // (undocumented)
-    getFrustumIntersectionDepthRange(frustum: Frustum, heightRange?: Range1d, gridPlane?: Plane3dByOriginAndUnitNormal, doGlobalScope?: boolean): Range1d;
+    getFrustumIntersectionDepthRange(frustum: Frustum, bimRange: Range3d, heightRange?: Range1d, gridPlane?: Plane3dByOriginAndUnitNormal, doGlobalScope?: boolean): Range1d;
     // (undocumented)
     getPlane(offset?: number): Plane3dByOriginAndUnitNormal;
     // (undocumented)

common/changes/@itwin/core-frontend/revert-adjustzplanes-globe-change_2022-01-11-14-46.json

@@ -0,0 +1,10 @@
+{
+  "changes": [
+    {
+      "packageName": "@itwin/core-frontend",
+      "comment": "",
+      "type": "none"
+    }
+  ],
+  "packageName": "@itwin/core-frontend"
+}

core/frontend/src/BackgroundMapGeometry.ts

@@ -213,7 +213,7 @@ export class BackgroundMapGeometry {
   }
 
   /** @internal */
-  public getFrustumIntersectionDepthRange(frustum: Frustum, heightRange?: Range1d, gridPlane?: Plane3dByOriginAndUnitNormal, doGlobalScope?: boolean): Range1d {
+  public getFrustumIntersectionDepthRange(frustum: Frustum, bimRange: Range3d, heightRange?: Range1d, gridPlane?: Plane3dByOriginAndUnitNormal, doGlobalScope?: boolean): Range1d {
     const clipPlanes = frustum.getRangePlanes(false, false, 0);
     const eyePoint = frustum.getEyePoint(scratchEyePoint);
     const viewRotation = frustum.getRotation(scratchViewRotation);
@@ -272,7 +272,7 @@ export class BackgroundMapGeometry {
                 scratchSilhouetteNormal.negate(scratchSilhouetteNormal);
             } else {
               /* If parallel projection - clip toward side of ellipsoid with BIM geometry */
-              if (viewZ.dotProduct(scratchSilhouetteNormal) < 0)
+              if (Vector3d.createStartEnd(silhouette.center, bimRange.center).dotProduct(scratchSilhouetteNormal) < 0)
                 scratchSilhouetteNormal.negate(scratchSilhouetteNormal);
             }
             clipPlanes.planes.push(ClipPlane.createNormalAndDistance(scratchSilhouetteNormal, scratchSilhouetteNormal.dotProduct(silhouette.center))!);

core/frontend/src/ViewingSpace.ts

@@ -177,7 +177,7 @@ export class ViewingSpace {
       const viewZ = this.rotation.getRow(2);
       const eyeDepth = this.eyePoint ? viewZ.dotProduct(this.eyePoint) : undefined;
 
-      depthRange = globalGeometry.geometry.getFrustumIntersectionDepthRange(frustum, globalGeometry.heightRange, gridPlane, this.view.maxGlobalScopeFactor > 1);
+      depthRange = globalGeometry.geometry.getFrustumIntersectionDepthRange(frustum, extents, globalGeometry.heightRange, gridPlane, this.view.maxGlobalScopeFactor > 1);
 
       if (eyeDepth !== undefined) {
         const maxBackgroundFrontBackRatio = 1.0E6;

core/frontend/src/render/webgl/SolarShadowMap.ts

@@ -357,7 +357,7 @@ export class SolarShadowMap implements RenderMemory.Consumer, WebGLDisposable {
     mapToWorld.multiplyPoint3dArrayQuietNormalize(scratchFrustum.points);       // This frustum represents the shadwowing geometry.  Intersect it with background geometry and expand the range depth to include that intersection.
     const backgroundMapGeometry = context.viewport.view.displayStyle.getBackgroundMapGeometry();
     if (undefined !== backgroundMapGeometry) {
-      const backgroundDepthRange = backgroundMapGeometry.getFrustumIntersectionDepthRange(this._shadowFrustum);
+      const backgroundDepthRange = backgroundMapGeometry.getFrustumIntersectionDepthRange(this._shadowFrustum, iModel.projectExtents);
       if (!backgroundDepthRange.isNull)
         shadowRange.low.z = Math.min(shadowRange.low.z, backgroundDepthRange.low);
     }