Update Files

lib/leenkx_tools/export_skydome_geometry.py

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+"""
+This script generates the skydome geometry data as stored in
+iron/Sources/iron/data/ConstData.hx.
+
+USAGE:
+    On MacOS/Linux:
+        Open Blender from the terminal to see the console output.
+    On Windows:
+        Open the Blender console via "Window > Toggle System Console".
+
+    Select the skydome object in object mode and run this script. Note
+    that the script flips the normals in the output. The original mesh
+    is not modified.
+
+    After running the script, open the console. If the script ran
+    successfully, the generated vertex data was printed to the console,
+    ready to copy to ConstData.hx.
+"""
+import bmesh
+import bpy
+
+
+def list_representation(lst) -> str:
+    """List to string without spaces."""
+    return f"[{','.join(str(i) for i in lst)}]"
+
+
+def run():
+    obj = bpy.context.object
+
+    if obj is None:
+        print("No object selected, aborting!")
+        return
+
+    if obj.type != "MESH":
+        print(f"Selected object '{obj.name}' is not a mesh, aborting!")
+        return
+
+    bm = bmesh.new()
+    bm.from_mesh(obj.data)
+    bmesh.ops.triangulate(bm, faces=bm.faces[:], quad_method="FIXED")
+
+    indices = []
+    positions = []
+    normals = []
+
+    # Fill index buffer
+    for face in bm.faces:
+        # Turn the normals inside for correct winding order of indices
+        face.normal_flip()
+
+        for vert in face.verts:
+            indices.append(vert.index)
+
+    # Vertex buffer data
+    for vert in bm.verts:
+        positions.extend(vert.co)
+        # Blender world normals have mirrored coords compared to spheres
+        nor = vert.normal
+        nor.negate()
+        normals.extend(nor)
+
+    pos_rounded = [round(elem, 5) for elem in positions]
+    nor_rounded = [round(elem, 5) for elem in normals]
+
+    bm.free()
+
+    print("\n====================")
+    print(f"Calculated mesh data for object '{obj.name}':")
+    print(f"Indices: {list_representation(indices)}")
+    print("")
+    print(f"Positions: {list_representation(pos_rounded)}")
+    print("")
+    print(f"Normals: {list_representation(nor_rounded)}")
+
+
+if __name__ == "__main__":
+    run()