Zoom levels depend on focal length, now in the model,

but not sure ig it's a good idea

frontend/static/js/main.js

@@ -138,6 +138,7 @@ $(document).ready(function () {
                         data: JSON.stringify(data),
 
                         success: function (response) {
+                            console.log(response);
                             georeferencingModal.hide();
                             let noCacheUrl = '/media/georeferenced/' + image_name + geoattempt_hash + '/{z}/{x}/{y}.png' + '?nocache=' + new Date().getTime();
                             if (lyr)
@@ -194,7 +195,7 @@ $(document).ready(function () {
                             var currentZoom = map.getZoom();
                             map.setZoom(11);
                             setTimeout(function () {
-                                map.setZoom(12);
+                                map.setZoom(response.maxZoom);
                             }, 300);  // Adjust the delay if necessary, 300ms works in most cases
                             $('#Submit').removeClass('disabled');
 

georeferencing/migrations/0036_geoattempt_maxzoom.py

@@ -0,0 +1,18 @@
+# Generated by Django 4.2.16 on 2024-10-27 07:43
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('georeferencing', '0035_batch_type_alter_batch_originalimages'),
+    ]
+
+    operations = [
+        migrations.AddField(
+            model_name='geoattempt',
+            name='maxZoom',
+            field=models.IntegerField(default=2),
+        ),
+    ]

georeferencing/migrations/0037_remove_geoattempt_maxzoom.py

@@ -0,0 +1,17 @@
+# Generated by Django 4.2.16 on 2024-10-27 09:33
+
+from django.db import migrations
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('georeferencing', '0036_geoattempt_maxzoom'),
+    ]
+
+    operations = [
+        migrations.RemoveField(
+            model_name='geoattempt',
+            name='maxZoom',
+        ),
+    ]

georeferencing/migrations/0038_image_maxzoom_image_minzoom.py

@@ -0,0 +1,23 @@
+# Generated by Django 4.2.16 on 2024-10-27 09:57
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('georeferencing', '0037_remove_geoattempt_maxzoom'),
+    ]
+
+    operations = [
+        migrations.AddField(
+            model_name='image',
+            name='maxZoom',
+            field=models.IntegerField(blank=True, null=True),
+        ),
+        migrations.AddField(
+            model_name='image',
+            name='minZoom',
+            field=models.IntegerField(blank=True, null=True),
+        ),
+    ]

georeferencing/models.py

@@ -62,16 +62,41 @@ class Image(models.Model):
     smallImageURL = models.URLField( blank = True, null = True)
     batch = models.ForeignKey('Batch', on_delete=models.CASCADE, blank=True, null=True)
     replicas = models.IntegerField(default=5)
+    maxZoom = models.IntegerField(blank=True, null=True)
+    minZoom = models.IntegerField(blank=True, null=True)
+
+    def get_zoom_levels(self):
+        zoom_levels = [
+            (30, (4,6)),
+            (60, (5,7)),
+            (120, (6,8)),
+            (240, (7,9)),
+            (480, (8,10)),
+        ]
+
+        for focal, (min_zoom, max_zoom) in zoom_levels:
+            if self.focalLength <= focal:
+                return min_zoom, max_zoom
+        return 7,12
+
+    def save(self, *args, **kwargs):
+        print(self.focalLength)
+        if self.focalLength is not None:
+            self.minZoom, self.maxZoom = self.get_zoom_levels()
+        super().save(*args, **kwargs)
+
     def __str__(self):
         return str(self.name)
 
 
+
+
 class Batch(models.Model):
     BATCH_CHOICES = (
         ('SEARCH', 'Search'),
         ('LIST', 'List'),
     )
-    
+
     name = models.CharField(max_length=100)
     createdDateTime = models.DateTimeField(auto_now_add=True)
     type = models.CharField(

georeferencing/serializers.py

@@ -59,6 +59,8 @@ def get_photo_taken(self,obj):
     def get_focal_length(self, obj):
         return obj.image.focalLength
 
+
+
 class MiniGeoAttemptSerializer(serializers.ModelSerializer):
     """
     Serializer for the GeoAttempt model, providing a minimal set of fields.

georeferencing/views.py

@@ -122,6 +122,7 @@ def patch(self, request, pk=None):
                 print('Starting the testing process')
                 # We increment the number of tries
                 geoattemp.numberTries += 1
+                geoattemp.maxZoom = 5
                 geoattemp.save()
 
                 # Ensure the georeferenced directory exists
@@ -163,7 +164,18 @@ def patch(self, request, pk=None):
                         return Response({"error": f"Failed to remove previous tiles: {e.stderr}"}, status=status.HTTP_500_INTERNAL_SERVER_ERROR)
 
                 # Fourth command: (-r bilinear is slower, but....)
-                command = 'gdal2tiles.py -z 7-12 -r near -s EPSG:4326'
+                # zoom will depend on the focal length
+                if geoattemp.image.focalLength  < 30:
+                    zoom = "4-6"
+                elif geoattemp.image.focalLength < 50:
+                    zoom = "5-8"
+                elif geoattemp.image.focalLength < 100:
+                    zoom = "6-10"
+                elif geoattemp.image.focalLength < 200:
+                    zoom = "7-11"
+                else:
+                    zoom = "7-12"
+                command = 'gdal2tiles.py -z ' + zoom + ' -r near -s EPSG:4326'
                 command += ' media/georeferenced/' + geoattemp.image.name + geoattemp.hash + '.tif'
                 command += ' media/georeferenced/' + geoattemp.image.name + geoattemp.hash
                 print(command)
@@ -172,7 +184,7 @@ def patch(self, request, pk=None):
                     subprocess.run(command, shell=True, capture_output=True, text=True, check=True)
                 except subprocess.CalledProcessError as e:
                     return Response({"error": f"gdal2tiles failed: {e.stderr}"}, status=status.HTTP_500_INTERNAL_SERVER_ERROR)
-
+                return Response(serializer.data, status=status.HTTP_200_OK)
             # That means that the user is happy with the final result    
             elif request.data['status'] == 'DONE':
                 # let's start the georeferencing process