Update pages/5_đź“Ť_VertXtractor.py
Browse files- pages/5_đź“Ť_VertXtractor.py +110 -4
pages/5_đź“Ť_VertXtractor.py
CHANGED
@@ -40,8 +40,22 @@ def load_swiss_dem(bbox):
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data = response.json()
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if 'features' in data and data['features']:
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response = requests.get(asset_url)
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response.raise_for_status()
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with MemoryFile(response.content) as memfile:
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@@ -50,7 +64,7 @@ def load_swiss_dem(bbox):
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transform = dataset.transform
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return dem, transform
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else:
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st.error("
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else:
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st.error("Aucune donnée trouvée dans la réponse de l'API")
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except requests.RequestException as e:
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@@ -62,7 +76,99 @@ def load_swiss_dem(bbox):
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return None, None
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def main():
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st.title("Mesh Tiler CH - Streamlit Edition")
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data = response.json()
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if 'features' in data and data['features']:
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feature = data['features'][0]
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assets = feature.get('assets', {})
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# Chercher le fichier GeoTIFF avec la meilleure résolution
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tiff_asset = None
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best_resolution = float('inf')
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for asset_name, asset_info in assets.items():
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if asset_info['type'].startswith('image/tiff'):
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resolution = float(asset_info.get('eo', float('inf')))
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if resolution < best_resolution:
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best_resolution = resolution
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tiff_asset = asset_info
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if tiff_asset:
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asset_url = tiff_asset['href']
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st.write(f"URL de l'asset sélectionné : {asset_url}")
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response = requests.get(asset_url)
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response.raise_for_status()
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with MemoryFile(response.content) as memfile:
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transform = dataset.transform
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return dem, transform
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else:
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st.error("Aucun fichier GeoTIFF trouvé dans les assets")
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else:
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st.error("Aucune donnée trouvée dans la réponse de l'API")
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except requests.RequestException as e:
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return None, None
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def extract_dem_region(dem, transform, bbox):
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"""
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Extrait une région spécifique du MNT basée sur une boîte englobante.
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"""
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minx, miny, maxx, maxy = bbox
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rows, cols = rasterio.transform.rowcol(transform, [minx, maxx], [miny, maxy])
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window = ((min(rows), max(rows)), (min(cols), max(cols)))
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dem_region = dem[window[0][0]:window[0][1], window[1][0]:window[1][1]]
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new_transform = rasterio.transform.from_bounds(minx, miny, maxx, maxy,
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dem_region.shape[1], dem_region.shape[0])
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return dem_region, new_transform
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def check_invalid_values(dem):
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invalid_values = []
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if np.any(np.isnan(dem)):
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invalid_values.append('Le DEM contient des valeurs NaN.')
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if np.any(np.isinf(dem)):
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invalid_values.append('Le DEM contient des valeurs infinies.')
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return invalid_values
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def create_mesh(dem, transform, resolution):
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"""
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Crée un maillage 3D à partir des données du MNT.
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"""
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try:
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height, width = dem.shape
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if height < 3 or width < 3:
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raise ValueError('Le MNT est trop petit pour créer un maillage.')
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invalid_values = check_invalid_values(dem)
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if invalid_values:
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raise ValueError('\n'.join(invalid_values))
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x, y = np.meshgrid(np.arange(width), np.arange(height))
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lon, lat = rasterio.transform.xy(transform, y, x)
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vertices = np.column_stack((lon.flatten(), lat.flatten(), dem.flatten()))
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faces = []
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for i in range(height - 1):
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for j in range(width - 1):
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idx = i * width + j
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faces.append([idx, idx + 1, idx + width])
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faces.append([idx + 1, idx + width + 1, idx + width])
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mesh = trimesh.Trimesh(vertices=vertices, faces=faces)
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target_faces = (height * width) // (resolution ** 2)
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mesh = mesh.simplify_quadric_decimation(target_faces)
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return mesh
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except Exception as e:
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logger.error(f"Erreur lors de la création du maillage: {str(e)}")
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st.error(f"Erreur lors de la création du maillage: {str(e)}")
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return None
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def visualize_mesh(mesh):
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"""
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Crée une visualisation du maillage en 3D Trisurf.
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"""
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fig = plt.figure()
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ax = fig.add_subplot(111, projection='3d')
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ax.plot_trisurf(mesh.vertices[:, 0], mesh.vertices[:, 1], mesh.vertices[:, 2],
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triangles=mesh.faces, cmap='viridis')
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ax.set_xlabel('X')
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ax.set_ylabel('Y')
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ax.set_zlabel('Z')
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return fig
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def visualize_mesh_wireframe(mesh):
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"""
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Crée une visualisation du maillage en wireframe.
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"""
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fig = plt.figure()
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ax = fig.add_subplot(111, projection='3d')
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ax.plot_wireframe(mesh.vertices[:, 0], mesh.vertices[:, 1], mesh.vertices[:, 2],
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triangles=mesh.faces, color='black')
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ax.set_xlabel('X')
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ax.set_ylabel('Y')
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ax.set_zlabel('Z')
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return fig
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def export_for_blender(mesh):
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"""
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Exporte le maillage dans un format compatible avec Blender.
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"""
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try:
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obj_file = BytesIO()
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mesh.export(obj_file, file_type='obj')
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return obj_file.getvalue()
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except Exception as e:
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logger.error(f"Erreur lors de l'export pour Blender: {str(e)}")
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st.error(f"Erreur lors de l'export pour Blender: {str(e)}")
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return None
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def main():
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st.title("Mesh Tiler CH - Streamlit Edition")
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