"""Quick look from the picture's own camera and an overlay on the picture, for fitting (headless, nothing saved):

    blender.exe -b ../CanisterStation.blend --python cs_overlay.py -- [tag]

previews/fit/wb_<tag>.png       Workbench, flat colours by material, the picture's framing
previews/fit/overlay_<tag>.png  the picture with the model's outline (silhouette and part edges) drawn over it
previews/fit/blend_<tag>.png    the picture and the render half and half
"""
import bpy, os, sys, subprocess

HERE = os.path.dirname(os.path.abspath(__file__))
FOLDER = os.path.dirname(HERE)
OUT = os.path.join(FOLDER, "previews", "fit")
os.makedirs(OUT, exist_ok=True)
argv = sys.argv[sys.argv.index("--") + 1:] if "--" in sys.argv else []
tag = argv[0] if argv else "a"
COL = {"M_CS_Black": (0.03, 0.03, 0.03), "M_CS_Green": (0.10, 0.26, 0.25), "M_CS_Grey": (0.30, 0.30, 0.31),
       "M_CS_Cream": (0.80, 0.76, 0.66), "M_CS_Steel": (0.62, 0.62, 0.62), "M_CS_Chrome": (0.85, 0.85, 0.85),
       "M_CS_Rubber": (0.01, 0.01, 0.01), "M_CS_Gap": (0.0, 0.0, 0.0), "M_CS_Screen": (0.1, 0.6, 0.6),
       "M_CS_PanelDark": (0.12, 0.16, 0.16), "M_CS_Glow": (0.4, 1.0, 0.9), "M_CS_Decal": (1.0, 0.85, 0.1)}
sc = bpy.context.scene
for m in bpy.data.materials:
    if m.name in COL:
        m.diffuse_color = COL[m.name] + (1.0,)
for o in bpy.data.objects:
    if o.name.startswith("UCX_"):
        o.hide_render = True
sc.camera = bpy.data.objects["CS_PictureCamera"]
sc.render.engine = 'BLENDER_WORKBENCH'
sh = sc.display.shading
sh.light = 'STUDIO'
sh.color_type = 'MATERIAL'
sh.show_object_outline = False
sh.show_cavity = True
sh.cavity_type = 'BOTH'
sc.render.film_transparent = True
sc.render.resolution_x, sc.render.resolution_y = 1199, 1363
sc.render.resolution_percentage = 100
sc.render.image_settings.file_format = 'PNG'
sc.render.image_settings.color_mode = 'RGBA'
sc.view_settings.view_transform = 'Standard'
p = os.path.join(OUT, "wb_%s.png" % tag)
sc.render.filepath = p
bpy.ops.render.render(write_still=True)
py = r"E:\Tools\Programs\Python\python.exe"
subprocess.run([py, os.path.join(HERE, "cs_overlay_img.py"), p, tag])
print("OVERLAY OK", p)