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lightfield_cuboid.py
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lightfield_cuboid.py
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import math
import random
import bpy
import bmesh
from .camera_position import CameraPosition
from mathutils import Color
from .lightfield import LightfieldPropertyGroup
class LightfieldCuboid(LightfieldPropertyGroup):
def construct(self):
visuals = self.default_construct()
self.lf_type = 'CUBOID'
self.obj_empty.empty_display_type = 'CUBE'
# Update lightfield references
self.obj_visuals.add().obj_visual = visuals[0]
self.obj_visuals.add().obj_visual = visuals[1]
self.obj_visuals.add().obj_visual = visuals[2]
self.obj_grid = visuals[0]
self.set_camera_to_first_view()
def construct_visuals(self, collection):
grid = self.create_grid()
space = self.create_space()
front = self.create_front()
# Add to lightfield collection
collection.objects.link(grid)
collection.objects.link(space)
collection.objects.link(front)
return [grid, space, front]
def create_space(self):
"""
Create visual that represents the space the lightfield is occupying.
:return: Object.
"""
name = self.construct_names()['space']
bpy.ops.mesh.primitive_cube_add(location=(0.0, 0.0, 0.0))
space = bpy.context.object
space.scale = [0.5] * 3
space.name = name
space.data.name = name
# Unlink the object from its current collection
space.users_collection[0].objects.unlink(space)
space_mat = bpy.data.materials.new(name)
col = Color()
col.hsv = (random.random(), 1.0, 0.8)
space_mat.diffuse_color = col[:] + (0.1,)
space.data.materials.append(space_mat)
space.show_wire = True
space.hide_render = True
return space
@staticmethod
def construct_names():
base = "LFCuboid"
return {'lightfield': base,
'camera': "{}_Camera".format(base),
'grid': "{}_Grid".format(base),
'space': "{}_Space".format(base),
'front': "{}_Front".format(base)}
def get_side_map(self):
side_map = {'f': [self.num_cams_x, self.num_cams_z],
'b': [self.num_cams_x, self.num_cams_z],
'l': [self.num_cams_y, self.num_cams_z],
'r': [self.num_cams_y, self.num_cams_z],
'u': [self.num_cams_x, self.num_cams_y],
'd': [self.num_cams_x, self.num_cams_y], }
return side_map
def position_generator(self):
# TODO: implement cube-map render
sides = ['f', 'b', 'l', 'r', 'u', 'd']
side_map = self.get_side_map()
for s in sides:
local_x_dir = side_map[s][0]
local_y_dir = side_map[s][1]
for local_y in range(local_y_dir):
for local_x in range(local_x_dir):
yield self.get_camera_pos(s, local_x, local_y)
def get_camera_pos(self, side, x, y):
base_x = 1 / (self.num_cams_x - 1)
base_y = 1 / (self.num_cams_y - 1)
base_z = 1 / (self.num_cams_z - 1)
if side == 'f':
return CameraPosition("view_{}{:04d}f".format(side, y * self.num_cams_x + x),
-0.5 + x * base_x,
0.5,
0.5 - y * base_z,
alpha=0.5 * math.pi)
elif side == 'b':
return CameraPosition("view_{}{:04d}f".format(side, y * self.num_cams_x + x),
0.5 - x * base_x,
-0.5,
0.5 - y * base_z,
alpha=0.5 * math.pi,
phi=math.pi)
elif side == 'l':
return CameraPosition("view_{}{:04d}f".format(side, y * self.num_cams_y + x),
-0.5,
-0.5 + x * base_y,
0.5 - y * base_z,
alpha=0.5 * math.pi,
phi=math.pi / 2)
elif side == 'r':
return CameraPosition("view_{}{:04d}f".format(side, y * self.num_cams_y + x),
0.5,
0.5 - x * base_y,
0.5 - y * base_z,
alpha=0.5 * math.pi,
phi=-math.pi / 2)
elif side == 'u':
return CameraPosition("view_{}{:04d}f".format(side, y * self.num_cams_x + x),
0.5 - x * base_x,
-0.5 + y * base_y,
0.5,
alpha=math.pi)
elif side == 'd':
return CameraPosition("view_{}{:04d}f".format(side, y * self.num_cams_x + x),
-0.5 + x * base_x,
0.5 - y * base_y,
-0.5
)