ArcGIS 3D altitude fix (#5066)

visgl · Oct 26, 2020 · e1e102f · e1e102f
1 parent 76085c7
commit e1e102f
Showing 1 changed file with 8 additions and 0 deletions.
diff --git a/modules/arcgis/src/deck-renderer.js b/modules/arcgis/src/deck-renderer.js
@@ -2,6 +2,13 @@
 
 import {initializeResources, render, finalizeResources} from './commons';
 
+// ArcGIS fov is corner-to-corner
+function arcgisFOVToDeckAltitude(fov, aspectRatio) {
+  const D = Math.sqrt(1 + aspectRatio ** 2);
+  const halfFOV = (fov / 2 / 180) * Math.PI;
+  return D / 2 / Math.tan(halfFOV);
+}
+
 export default function createDeckRenderer(DeckProps, externalRenderers) {
   class DeckRenderer {
     constructor(view, props) {
@@ -36,6 +43,7 @@ export default function createDeckRenderer(DeckProps, externalRenderers) {
         viewState: {
           latitude: this.view.center.latitude,
           longitude: this.view.center.longitude,
+          altitude: arcgisFOVToDeckAltitude(this.view.camera.fov, width / height),
           zoom: this.view.zoom,
           bearing: this.view.camera.heading,
           pitch: this.view.camera.tilt