Initial commit

.gitignore

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+__pycache__/
+builds/

Licenses.txt

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+Licenses
+========
+
+Maps Models Importer
+---------------------
+
+*Maps Models Importer* is released under the MIT license:
+
+Copyright (c) 2019 Élie Michel
+
+Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+
+
+RenderDoc
+---------
+
+*Maps Models Importer* relies on a dynamic library provided by [RenderDoc](https://github.com/baldurk/renderdoc), which is released under the MIT license:
+
+Copyright (c) 2015-2019 Baldur Karlsson
+
+Copyright (c) 2014 Crytek
+
+Copyright (c) 1998-2018 [Third party code and tools](https://github.com/baldurk/renderdoc/blob/v1.x/docs/credits_acknowledgements.rst)
+
+Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+

README.md

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+Maps Models Importer
+====================
+
+*Maps Models Importer* is a set of tools for importint 3D models from wide maps in 3D content softwares.
+This is a proof of concept containing only a Blender add-on for importing 3D models from Google Maps.
+
+The `blender` directory contains the source code of the Blender add-on importing captures recorded with [RenderDoc](https://renderdoc.org/):
+
+![Screenshot of blender addon in action](doc/screenshot.png)
+
+**NB** This is an add-on for Blender 2.80 and above, which you can download from [here](https://builder.blender.org/download/).
+
+Installation
+------------
+
+Download a [release](TODO) and make a zip of `blender/MapsModelsImporter/`. In Blender, go to `Edit > Preferences`, `Add-on`, `Install`, then browse to the zip file.
+
+Usage
+-----
+
+  1. Start RenderDoc, and `File > Inject into process`;
+
+  2. Start chrome using specific flags: `chrome.exe --disable-gpu-sandbox --gpu-startup-dialog --use-angle=gl`. Do NOT press Ok on the dialog box yet;
+
+  3. In RenderDoc, search for the chrome process and inject into it;
+
+  4. Press OK in the chrom dialog;
+
+  5. Go to Google Maps in satellite view, and take a capture using `Print Screen` **while moving** in the viewport;
+
+  6. In RenderDoc, save the capture as an rdc file
+
+  7. In Blender, go to `File > Import > Google Maps Capture` an choose your capture file.
+
+Disclaimer
+----------
+
+This is a proof of concept showcasing how the 3D render process of Google Maps can be inspected. This is intended for educational purpose only. For a more in-depth analysis, see [Importing Actual 3D Models From Google Maps](TODO).
+
+Do not use this for any commercial nor redistribution purpose. Actually, the use of such tool might be allowed for private read-only use, as this is what happens when browsing Google Maps, but not beyond. I do not take responsibility for any use of this tool.
+
+
+Help Wanted
+-----------
+
+This repository does not provide the required RenderDoc binaries for linux nor for OSX. If you have such a system, build RenderDoc against Python 3.7.0 (the minor version matters) to be compatible with the version of Blender's Python distribution.
+

blender/MapsModelsImporter/Licenses.txt

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+Licenses
+========
+
+Maps Models Importer
+---------------------
+
+*Maps Models Importer* is released under the MIT license:
+
+Copyright (c) 2019 Élie Michel
+
+Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+
+
+RenderDoc
+---------
+
+*Maps Models Importer* relies on a dynamic library provided by [RenderDoc](https://github.com/baldurk/renderdoc), which is released under the MIT license:
+
+Copyright (c) 2015-2019 Baldur Karlsson
+
+Copyright (c) 2014 Crytek
+
+Copyright (c) 1998-2018 [Third party code and tools](https://github.com/baldurk/renderdoc/blob/v1.x/docs/credits_acknowledgements.rst)
+
+Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+

blender/MapsModelsImporter/README.md

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+Maps Models Importer
+====================
+
+*Maps Models Importer* is a set of tools for importint 3D models from wide maps in 3D content softwares.
+This is a proof of concept containing only a Blender add-on for importing 3D models from Google Maps.
+
+The `blender` directory contains the source code of the Blender add-on importing captures recorded with [RenderDoc](https://renderdoc.org/):
+
+![Screenshot of blender addon in action](doc/screenshot.png)
+
+Disclaimer
+----------
+
+This is a proof of concept showcasing how the 3D render process of Google Maps can be inspected. This is intended for educational purpose only. For a more in-depth analysis, see [](TODO)
+
+Do not use this for any commercial nor redistribution purpose. Actually, the use of such tool might be allowed for private read-only use, as this is what happens when browsing Google Maps, but not beyond. I do not take responsibility for any use of this tool.
+
+
+Help Wanted
+-----------
+
+This repository does not provide the required RenderDoc binaries for linux nor for OSX. If you have such a system, build RenderDoc against Python 3.7.0 (the minor version matters) to be compatible with the version of Blender's Python distribution.
+

blender/MapsModelsImporter/__init__.py

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+# Copyright (c) 2019 Elie Michel
+#
+# Permission is hereby granted, free of charge, to any person obtaining a copy
+# of this software and associated documentation files (the “Software”), to deal
+# in the Software without restriction, including without limitation the rights
+# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+# copies of the Software, and to permit persons to whom the Software is
+# furnished to do so, subject to the following conditions:
+#
+# The above copyright notice and this permission notice shall be included in
+# all copies or substantial portions of the Software.
+#
+# The Software is provided “as is”, without warranty of any kind, express or
+# implied, including but not limited to the warranties of merchantability,
+# fitness for a particular purpose and noninfringement. In no event shall
+# the authors or copyright holders be liable for any claim, damages or other
+# liability, whether in an action of contract, tort or otherwise, arising from,
+# out of or in connection with the software or the use or other dealings in the
+# Software.
+#
+# This file is part of MapsModelsImporter, a set of addons to import 3D models
+# from Maps services
+
+bl_info = {
+    "name": "Maps Models Importer",
+    "author": "Elie Michel",
+    "version": (1, 0),
+    "blender": (2, 80, 0),
+    "location": "File > Import > Google Maps Capture",
+    "description": "Import meshes from a Google Maps capture",
+    "warning": "",
+    "wiki_url": "",
+    "category": "Import-Export",
+}
+
+from . import preferences
+from . import properties
+from . import operators
+from . import panels
+
+def register():
+    preferences.register()
+    properties.register()
+    operators.register()
+    panels.register()
+
+def unregister():
+    panels.unregister()
+    operators.unregister()
+    properties.unregister()
+    preferences.unregister()
+
+if __name__ == "__main__":
+    register()

blender/MapsModelsImporter/google_maps.py

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+# Copyright (c) 2019 Elie Michel
+#
+# Permission is hereby granted, free of charge, to any person obtaining a copy
+# of this software and associated documentation files (the “Software”), to deal
+# in the Software without restriction, including without limitation the rights
+# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+# copies of the Software, and to permit persons to whom the Software is
+# furnished to do so, subject to the following conditions:
+#
+# The above copyright notice and this permission notice shall be included in
+# all copies or substantial portions of the Software.
+#
+# The Software is provided “as is”, without warranty of any kind, express or
+# implied, including but not limited to the warranties of merchantability,
+# fitness for a particular purpose and noninfringement. In no event shall
+# the authors or copyright holders be liable for any claim, damages or other
+# liability, whether in an action of contract, tort or otherwise, arising from,
+# out of or in connection with the software or the use or other dealings in the
+# Software.
+#
+# This file is part of MapsModelsImporter, a set of addons to import 3D models
+# from Maps services
+
+import sys
+import os
+import subprocess
+
+from .utils import getBinaryDir, makeTmpDir
+
+SCRIPT_PATH = os.path.join(os.path.dirname(os.path.realpath(__file__)), "google_maps_rd.py")
+
+def captureToFiles(filepath, prefix):
+    """Extract binary files and textures from a RenderDoc capture file.
+    This spawns a standalone Python interpreter because renderdoc module cannot be loaded in embedded Python"""
+    blender_dir = os.path.dirname(sys.executable)
+    python_home = os.path.join(blender_dir, "2.80", "python")
+    os.environ["PYTHONHOME"] = python_home
+    os.environ["PYTHONPATH"] = os.environ.get("PYTHONPATH", "")
+    os.environ["PYTHONPATH"] += os.pathsep + os.path.abspath(getBinaryDir())
+    python = os.path.join(python_home, "bin", "python.exe" if sys.platform == "win32" else "python")
+    subprocess.run([python, SCRIPT_PATH, filepath, prefix])
+
+# -----------------------------------------------------------------------------
+
+import bpy
+import bmesh
+import pickle
+from bpy_extras import object_utils
+from math import floor, pi
+from mathutils import Matrix
+import os
+
+def extractUniforms(constants, refMatrix):
+    """Extract from constant buffer the model matrix and uv offset
+    The reference matrix is used to cancel the view part of teh modelview matrix
+    """
+    uvOffsetScale = constants['$Globals']['webgl_fa7f624db8ab37d1']
+    mdata = constants['$Globals']['webgl_3c7b7f37a9bd4c1d']
+    matrix = Matrix([
+        mdata[0:4],
+        mdata[4:8],
+        mdata[8:12],
+        [0, 0, 0, 1],
+    ])
+    if refMatrix is None:
+        # Rotate around Y because Google Maps uses X as up axis
+        refMatrix = Matrix.Rotation(-pi/2, 4, 'Y') @ matrix.inverted()
+    matrix = refMatrix @ matrix
+
+    matrix[0][3] *= .0039
+    matrix[1][3] *= .0039
+    matrix[2][3] *= .0039
+
+    return uvOffsetScale, matrix, refMatrix
+
+def addMesh(context, name, verts, tris, uvs):
+    mesh = bpy.data.meshes.new(name)
+
+    mesh.from_pydata(verts, [], tris)
+    mesh.update()
+
+    bm = bmesh.new()
+    bm.from_mesh(mesh)
+    uv_layer = bm.loops.layers.uv.verify()
+    for f in bm.faces:
+        for l in f.loops:
+            luv = l[uv_layer]
+            luv.uv = tuple(uvs[l.vert.index])
+    bm.to_mesh(mesh)
+
+    obj = object_utils.object_data_add(context, mesh, operator=None)
+    return obj
+
+def addImageMaterial(name, obj, img):
+    bpy.ops.material.new()
+    mat = bpy.data.materials.new(name=name)
+    mat.use_nodes = True
+    obj.data.materials.append(mat)
+    nodes = mat.node_tree.nodes
+    principled = nodes["Principled BSDF"]
+    texture_node = nodes.new(type="ShaderNodeTexImage")
+    texture_node.image = img
+    links = mat.node_tree.links
+    link = links.new(texture_node.outputs[0], principled.inputs[0])
+
+def loadData(prefix, drawcallId):
+    with open("{}{:05d}-indices.bin".format(prefix, drawcallId), 'rb') as file:
+        indices = pickle.load(file)
+
+    with open("{}{:05d}-positions.bin".format(prefix, drawcallId), 'rb') as file:
+        positions = pickle.load(file)
+
+    with open("{}{:05d}-uv.bin".format(prefix, drawcallId), 'rb') as file:
+        uvs = pickle.load(file)
+
+    img = bpy.data.images.load("{}{:05d}-texture.png".format(prefix, drawcallId))
+
+    with open("{}{:05d}-constants.bin".format(prefix, drawcallId), 'rb') as file:
+        constants = pickle.load(file)
+
+    return indices, positions, uvs, img, constants
+
+# -----------------------------------------------------------------------------
+
+def filesToBlender(context, prefix, max_blocks=200):
+    """Import data from the files extracted by captureToFiles"""
+    # Get reference matrix
+    refMatrix = None
+    if context.scene.maps_models_importer_is_ref_matrix_valid:
+        values = context.scene.maps_models_importer_ref_matrix
+        refMatrix = Matrix((values[0:4], values[4:8], values[8:12], values[12:16]))
+
+    for drawcallId in range(max_blocks):
+        if not os.path.isfile("{}{:05d}-indices.bin".format(prefix, drawcallId)):
+            break
+
+        try:
+            indices, positions, uvs, img, constants = loadData(prefix, drawcallId)
+        except FileNotFoundError as err:
+            print("Skipping ({})".format(err))
+            continue
+
+        uvOffsetScale, matrix, refMatrix = extractUniforms(constants, refMatrix)
+
+        # Make triangles from triangle strip index buffer
+        n = len(indices)
+        tris = [ [ indices[i+j] for j in [[0,1,2],[0,2,1]][i%2] ] for i in range(n - 3)]
+        tris = [ t for t in tris if t[0] != t[1] and t[0] != t[2] and t[1] != t[2] ]
+        verts = [ [ p[0], p[1], p[2] ] for p in positions ]
+
+        [ou, ov, su, sv] = uvOffsetScale
+        uvs = [ [ (floor(u * 65535.0 + 0.5) + ou) * su, (floor(v * 65535.0 + 0.5) + ov) * sv ] for u, v in uvs ]
+
+        if len(indices) == 0:
+            continue
+
+        mesh_name = "BuildingMesh-{:05d}".format(drawcallId)
+        obj = addMesh(context, mesh_name, verts, tris, uvs)
+        obj.matrix_world = matrix
+
+        mat_name = "BuildingMat-{:05d}".format(drawcallId)
+        addImageMaterial(mat_name, obj, img)
+
+    # Save reference matrix
+    if refMatrix:
+        values = sum([list(v) for v in refMatrix], [])
+        context.scene.maps_models_importer_ref_matrix = values
+        context.scene.maps_models_importer_is_ref_matrix_valid = True
+
+# -----------------------------------------------------------------------------
+
+def importCapture(context, filepath, max_blocks, pref):
+    prefix = makeTmpDir(pref, filepath)
+    captureToFiles(filepath, prefix)
+    filesToBlender(context, prefix, max_blocks)