def camera(self) -> np.array:
t = 0.05 * self.t
pan = 0.05
target = np.array([0, 0, pan])
up = np.array([0, 0, 1])
r = 0.6
eye = np.array([r * math.cos(t), r * math.sin(t), r * 0.3 + pan])
return numgl.lookat(eye, target, up)
def main():
target = np.array([0, 0, 0])
up = np.array([0, 1, 0])
cube = Model.load_obj('icosaedron.obj')
cube.compute_face_normals()
w = 64
h = 64
n = 32
tiles = []
for i in range(n):
a = 2 * np.pi * i / n
eye = np.array([np.sin(a), 0, np.cos(a)])
projection = numgl.lookat(eye, target, up)
projection_hash = md5(projection.data.tobytes())
cache_file = 'cache/render-{hash}.npy'.format(hash=projection_hash)
if os.path.isfile(cache_file):
im = np.load(cache_file)
else:
im = np.zeros((h, w, 4))
render(im, cube, projection)
os.makedirs('cache/', exist_ok=True)
np.save(cache_file, im)
#with open('image-{:02}.png'.format(i), 'wb') as f:
# f.write(png.write(image.quantize(im, bits=8).tobytes(), w, h))
large = (8, 16)
tiles.extend(image.tile(im, shape=large))
lookup = make_lookup(0, len(tiles))
replace_duplicates(tiles, lookup)
repack(tiles, lookup)
# downsample to 2-bits
# write sprite sheets
low_bank = image.quant2(image.intensity(np.vstack(tiles[0::2])), bits=2)
with open('image-0000.chr', 'wb') as f:
f.write(npchr.write(low_bank))
high_bank = image.quant2(image.intensity(np.vstack(tiles[1::2])), bits=2)
with open('image-1000.chr', 'wb') as f:
f.write(npchr.write(high_bank))
# write lookup tables
with open('lookup.bin', 'wb') as f:
f.write(pack_lookup(lookup))
def main():
eye = np.array([0, 0, -1])
target = np.array([0, 0, 0])
up = np.array([0, 1, 0])
cube = Model.load_obj('icosaedron.obj')
cube.compute_face_normals()
w = 64
h = 64
os.makedirs('images', exist_ok=True)
n = 100
tau = 2 * math.pi
for a in range(n):
eye = np.array([math.sin(tau * a / n), 0, math.cos(tau * a / n)])
im = np.zeros((h, w, 4), 'uint8')
render(im, cube, numgl.lookat(eye, target, up))
with open('images/{:02}.png'.format(a), 'wb') as f:
f.write(png.write(im.tobytes(), w, h))
out = 'out.gif'
create_gif(sorted(glob('images/*.png')), out)
print(out)
def pose(self):
return numgl.lookat(self.eye, self.target, self.up)