cloning
link-mesh-array.py
link-mesh.py

mesh fabrication
staircase.py
triangle-donut.py
vertexAccumulator.py
randomSquareArray.py
meshFromBathymetry.py
cylinders-from-list-of-radii.py
binary-image-to-mesh.py
sphere-minecraft-schematic.py
spikify.py
add-to-mesh.py
mobius-strip.py
split-copy-mesh.py

fabricating other objects
create-text.py
text-from-file.py
create-camera.py
create-bezier.py
helix-bezier.py

material slots
cube-copy-blue.py
cube-turns-red.py
red-blue-per-object.py

animation and fcurves
csv-to-fcurve-loc-rot.py
csv-to-fcurve.py
pop-in-material.py
spike-wiggle-2.py
spike-wiggle.py
sweep-animate-size.py
animate-cycles-lamp-strength.py

incorporating python libraries
exec-text-library.py
exec-external-python.py
import-python.py

constraints
camera-track-object.py
text-track-camera.py

shape keys
explore-shape-keys.py
shape-key-fin.py
docking-tube.py

animating curve bevel
data-graph.py

drivers
scan-drivers.py
copy-drivers.py
driver-fin.py
driver-multi-chain.py

UV layers
barber-pole.py
expand-uv-to-fit.py
uv-from-geometry-cubic.py
flip-texture-v-coordinate.py

modifiers
hook-modifier-curve.py
rounded-prisms.py
make-tile.py
remove-action-modifiers.py

NLAs
explore-NLAs.py
spinning-frogs.py

video sequence editor (VSE)
create-vse-image-strips.py
slide-show.py
vse-strip-gap.py

images and textures
image-on-mesh.py
image-to-material-node.py
load-image-texture.py
texture-one-cube-face.py
condense-duplicate-images.py

analytic geometry
animate-random-spin.py
camera-cone-exp-2.py
camera-cone-exp.py
compute-circle-center.py
dihedral-angle-from-xy.py
extrude-edge-along-custom-axis.py
orientation-matrix.py
two-spheres.py
bezier-interpolate.py
rotate-to-match.py

node trees
change-diffuse-to-emission-node.py

etc
add-plane-from-selected-vertices.py
adjust-all-materials.py
all-nodes-cycles-materials.py
bit_shift.py
bone-orientation-demo.py
cannonball-packing.py
comb.py
convert-quaternion-keyframes-to-euler.py
copy-location-from-vertex-group.py
create-cycles-material.py
demonstrate-decomposition-instability.py
dump-point-cache.py
dump-screen-layout-info.py
expand-nla-strips.py
explore-edge-bevel-weight.py
find-action-users.py
find-green-rectangle.py
find-new-objects.py
fix-scene-layers.py
generate-makefile.py
link-external-data-blocks.py
list-referenced-files.py
material-readout.py
movie-card-stack.py
movies-on-faces.py
next-file-name.py
object-font-from-regular-font.py
operator-mesh-gridify.py
particle-animator.py
particle_loop.py
pose-match.py
pose-sequence-to-fbx.py
prepare-texture-bake.py
raining-physics.py
random-pebble-material.py
reverse-keyframes.py
scale-parallelogram.py
screenshot-sequence.py
select-objects-in-modifiers.py
select-vertices.py
shift-layers.py
snapshot-keyframes-as-mesh.py
sphere-project-texture.py
squish-mesh-axis.py
subdivide-fcurve.py
thicken-texture.py
transform-selected.py
voronoi-madness.py

__author__ = 'thoth'

import bpy
from math import *
from mathutils import *

#
#

def make_cubes(scn):
    r=10
    for x in range(-r,r,2):
        for y in range(-r,r,2):
            for z in range(-r,r,2):
                name = "cube at %d,%d,%d"%(x,y,z)
                obj = bpy.data.objects.get(name)
                if obj is None:
                    mesh = bpy.data.meshes['Cube']
                    obj = bpy.data.objects.new(name, mesh)
                    scn.objects.link(obj)
                    obj.location = (x,y,z)

def cubes(scn):
    return [ obj for obj in scn.objects if obj.name[:8]=='cube at ']

class CameraCone:

    def __init__(self, matrix, sensor_width, lens, resolution_x, resolution_y):
        self.matrix = matrix.inverted()
        self.sensor_width = sensor_width
        self.lens = lens

        w = 0.5* sensor_width / lens
        if resolution_x> resolution_y:
            x = w
            y = w*resolution_y/resolution_x
        else:
            x = w*resolution_x/resolution_y
            y = w

        lr = Vector([x,-y,-1])
        ur = Vector([x,y,-1])
        ll = Vector([-x,-y,-1])
        ul = Vector([-x,y,-1])
        self.half_plane_normals = [
            lr.cross(ll).normalized(),
            ll.cross(ul).normalized(),
            ul.cross(ur).normalized(),
            ur.cross(lr).normalized()
        ]

    def from_camera(cam, scn):
        return CameraCone(cam.matrix_world, cam.data.sensor_width, cam.data.lens, scn.render.resolution_x, scn.render.resolution_y)

    def isVisible(self, loc, fudge=0):

        loc2 = self.matrix * loc

        for norm in self.half_plane_normals:
            z2 = loc2.dot(norm)
            if z2 < -fudge:
                return False

        return True

def adjust_visibility(scn):
    cam_cone = CameraCone.from_camera(scn.camera, scn)
    for obj in cubes(scn):
        obj.hide = cam_cone.isVisible(obj.location, sqrt(3))

#
#

scn = bpy.context.scene

make_cubes(scn)

adjust_visibility(scn)

Blender python API quick-start

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