# Blender 3.4.1 
# Debian 12 @ tenko
# 20251109, résidence polygones @ Fablab des portes logiques

import bpy
import math

# -------------------------------
# Rendu wireframe "propre" 600x600
# -------------------------------

# Supprimer tous les objets existants
bpy.ops.wm.read_factory_settings(use_empty=True)

# Importer le STL
bpy.ops.import_mesh.stl(filepath="teapot.stl")
obj = bpy.context.selected_objects[0]

# Supprimer tous les matériaux existants
obj.data.materials.clear()

# Ajouter un modifier wireframe
mod = obj.modifiers.new(name="WireframeMod", type='WIREFRAME')
mod.thickness = 0.02  # épaisseur des lignes

# Créer un matériau noir shadeless pour le wireframe
mat = bpy.data.materials.new(name="WireMat")
mat.diffuse_color = (0, 0, 0, 1)
mat.use_nodes = True
bsdf = mat.node_tree.nodes.get("Principled BSDF")
bsdf.inputs['Base Color'].default_value = (0, 0, 0, 1)
bsdf.inputs['Specular'].default_value = 0
bsdf.inputs['Roughness'].default_value = 1
obj.data.materials.append(mat)

# Ajouter une caméra
cam_data = bpy.data.cameras.new(name="Camera")
cam_object = bpy.data.objects.new("Camera", cam_data)
bpy.context.collection.objects.link(cam_object)
bpy.context.scene.camera = cam_object

# Paramètres de rendu
scene = bpy.context.scene
scene.render.image_settings.file_format = 'PNG'
scene.render.resolution_x = 600
scene.render.resolution_y = 600
scene.render.film_transparent = False  # fond blanc
# scene.render.film_transparent_glass = False

# Désactiver l’anti-aliasing
# scene.render.use_antialiasing = False
scene.render.engine = 'BLENDER_EEVEE'  # moteur Eevee plus simple
# Eevee anti-aliasing quasi désactivé
scene.eevee.taa_render_samples = 1

# Récupérer la scène
scene = bpy.context.scene

# Créer un monde si nécessaire
if scene.world is None:
    world = bpy.data.worlds.new("World")
    scene.world = world

# Couleur de fond blanc
scene.world.use_nodes = True
bg = scene.world.node_tree.nodes['Background']
bg.inputs['Color'].default_value = (1, 1, 1, 1)  # blanc

# Centrer la caméra autour de l'objet
center = obj.location

# Paramètres rotation
n_views = 30
radius = 10   # distance caméra
elevation = 5

for i in range(n_views):
    angle = 2 * math.pi * i / n_views
    cam_object.location.x = center.x + radius * math.cos(angle)
    cam_object.location.y = center.y + radius * math.sin(angle)
    cam_object.location.z = center.z + elevation
    
    # Orienter la caméra vers le centre
    direction = center - cam_object.location
    rot_quat = direction.to_track_quat('-Z', 'Y')
    cam_object.rotation_euler = rot_quat.to_euler()
    
    # Nom du fichier
    scene.render.filepath = f"teapot_wire_{i:02d}.png"
    
    # Rendu
    bpy.ops.render.render(write_still=True)