# Spearfish: quick perspective looks (Workbench), exec'd in Blender. ENGINE / NAME / SHOTS may be set before exec.
import bpy, math, os
from mathutils import Vector, Matrix
OUTD = os.path.join(r"D:\HADAL - The Descent\models\tender-spearfish", "previews")
os.makedirs(OUTD, exist_ok=True)
sc = bpy.context.scene
eng = globals().get("ENGINE", "BLENDER_WORKBENCH")
name = globals().get("NAME", "wb")
shots = globals().get("SHOTS", {
    "q_front_port": (Vector((7.5, -9.0, 4.0)), Vector((0, -0.6, 0.15)), 34),
    "q_rear_stbd": (Vector((-8.0, 8.5, 3.5)), Vector((0, 0.4, 0.2)), 34),
    "q_low_side": (Vector((9.5, -1.5, -1.6)), Vector((0, -0.4, 0.0)), 34),
    "q_top": (Vector((3.0, -2.0, 11.0)), Vector((0, 0.0, 0.3)), 40),
})
sc.render.engine = eng
if eng == '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 = False
sc.render.image_settings.file_format = 'PNG'; sc.render.image_settings.color_mode = 'RGB'
sc.render.resolution_x, sc.render.resolution_y, sc.render.resolution_percentage = 1600, 900, 100
cam = bpy.data.objects.get("_pv_cam")
if cam is None:
    cam = bpy.data.objects.new("_pv_cam", bpy.data.cameras.new("_pv_cam"))
    sc.collection.objects.link(cam)
cam.data.type = 'PERSP'
prev = sc.camera
sc.camera = cam
hide = [o for o in bpy.data.objects if o.name.startswith("UCX_")]
for o in hide:
    o.hide_render = True
done = []
for nm, (loc, tgt, lens) in shots.items():
    cam.location = loc
    d = (tgt - loc).normalized()
    cam.rotation_euler = d.to_track_quat('-Z', 'Y').to_euler()
    cam.data.lens = lens
    sc.render.filepath = os.path.join(OUTD, "%s_%s.png" % (name, nm))
    bpy.ops.render.render(write_still=True)
    done.append(sc.render.filepath)
sc.camera = prev
result = done