from django.contrib.gis.db import models

class NamedModel(models.Model):

    name = models.CharField(max_length=30)

    class Meta:

        abstract = True

    def __str__(self):

        return self.name

class City3D(NamedModel):

    point = models.PointField(dim=3)

    pointg = models.PointField(dim=3, geography=True)

    class Meta:

        required_db_features = {"supports_3d_storage"}

class Interstate2D(NamedModel):

    line = models.LineStringField(srid=4269)

class Interstate3D(NamedModel):

    line = models.LineStringField(dim=3, srid=4269)

    class Meta:

        required_db_features = {"supports_3d_storage"}

class InterstateProj2D(NamedModel):

    line = models.LineStringField(srid=32140)

class InterstateProj3D(NamedModel):

    line = models.LineStringField(dim=3, srid=32140)

    class Meta:

        required_db_features = {"supports_3d_storage"}

class Polygon2D(NamedModel):

    poly = models.PolygonField(srid=32140)

class Polygon3D(NamedModel):

    poly = models.PolygonField(dim=3, srid=32140)

    class Meta:

        required_db_features = {"supports_3d_storage"}

class SimpleModel(models.Model):

    class Meta:

        abstract = True

class Point2D(SimpleModel):

    point = models.PointField()

class Point3D(SimpleModel):

    point = models.PointField(dim=3)

    class Meta:

        required_db_features = {"supports_3d_storage"}

class MultiPoint3D(SimpleModel):

    mpoint = models.MultiPointField(dim=3)

    class Meta:

        required_db_features = {"supports_3d_storage"}