From 60d7dd8c1caf37fa49a62f74a8fc5d5f5def3c25 Mon Sep 17 00:00:00 2001
From: Zack Buhman <zack@buhman.org>
Date: Sun, 4 May 2025 01:38:23 -0500
Subject: [PATCH] add blender.py

---
 blender.py | 109 +++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 109 insertions(+)
 create mode 100644 blender.py

diff --git a/blender.py b/blender.py
new file mode 100644
index 0000000..5294d73
--- /dev/null
+++ b/blender.py
@@ -0,0 +1,109 @@
+import bpy
+
+def render_vec3(v):
+    return f"{{{v.x}, {v.y}, {v.z}}}"
+
+def render_mesh_vertices(f, name, vertices):
+    f.write(f"const vec3 {name}_position[] = {{\n")
+    for vertex in vertices:
+        f.write(f"  {render_vec3(vertex.co)},\n")
+    f.write("};\n\n")
+
+def render_mesh_normals(f, name, vertices):
+    f.write(f"const vec3 {name}_normal[] = {{\n")
+    for vertex in vertices:
+        f.write(f"  {render_vec3(vertex.normal)},\n")
+    f.write("};\n\n")
+
+def render_polygons(f, name, polygons):
+    f.write(f"const polygon {name}_polygons[] = {{\n")
+    for i, polygon in enumerate(polygons):
+        s = ", ".join(map(str, polygon.vertices))
+        c = "// " if len(polygon.vertices) != 4 else ""
+
+        f.write(f"  {c}{{{s}}},\n")
+    f.write("};\n\n")
+
+def render_location(f, location):
+    s = render_vec3(location)
+    f.write(f"  .location = {s},\n")
+
+def render_scale(f, scale):
+    s = render_vec3(scale)
+    f.write(f"  .scale = {s},\n")
+
+def render_rotation_axis_angle(f, r):
+    r = f"{{{r[0]}, {r[1]}, {r[2]}, {r[3]}}}"
+    f.write(f"  .rotation = {r},\n")
+
+def render_mesh(f, name):
+    f.write(f"const mesh {name} = {{\n")
+    f.write(f"  .position = {name}_position,\n")
+    f.write(f"  .position_length = (sizeof ({name}_position)) / (sizeof ({name}_position[0])),\n")
+    f.write(f"  .normal = {name}_normal,\n")
+    f.write(f"  .normal_length = (sizeof ({name}_normal)) / (sizeof ({name}_normal[0])),\n")
+    f.write(f"  .polygons = {name}_polygons,\n")
+    f.write(f"  .polygons_length = (sizeof ({name}_polygons)) / (sizeof ({name}_polygons[0])),\n")
+    f.write("};\n\n")
+
+def translate_name(name):
+    return name.replace(".", "_").replace("-", "_")
+
+def export_scene(f):
+    meshes = set()
+
+    for object in bpy.context.scene.objects:
+        #mesh = c.to_mesh()
+        #mesh.vertex_normals
+        #mesh.vertex_colors
+        #mesh.vertices
+        #mesh.uv_layers
+        #mesh.polygons
+        #mesh.polygon_normals
+        #mesh.name
+
+        mesh = object.to_mesh()
+        if mesh.name in meshes:
+            continue
+        meshes.add(mesh.name)
+
+        mesh_name = "mesh_" + translate_name(mesh.name)
+
+        render_mesh_vertices(f, mesh_name, mesh.vertices)
+        render_mesh_normals(f, mesh_name, mesh.vertices)
+        render_polygons(f, mesh_name, mesh.polygons)
+
+        render_mesh(f, mesh_name);
+
+        #mesh.polygons[0].vertices
+        # [0, 1, 3, 2]
+
+        # v = mesh.vertices[0]
+        # v.normal
+        # v.index
+
+    f.write("const struct object objects[] = {\n")
+    for object in bpy.context.scene.objects:
+        #object.rotation_mode = 'AXIS_ANGLE'
+        #object.name
+        #object.rotation_axis_angle
+        #object.rotation_euler
+        #object.location
+
+        obj_name = "object_" + translate_name(object.name)
+
+        f.write(f"{{ // {obj_name}\n")
+
+        obj_mesh_name = "mesh_" + translate_name(object.to_mesh().name)
+
+        f.write(f"  .mesh = &{obj_mesh_name},\n")
+
+        render_scale(f, object.scale)
+        render_rotation_axis_angle(f, object.rotation_axis_angle)
+        render_location(f, object.location)
+
+        f.write("},\n")
+    f.write("};\n\n")
+
+with open("output.h", "w") as f:
+    export_scene(f)