def render(camera, world):
image = canvas(camera.hsize, camera.vsize)
start = time.time()
for y in range(camera.vsize):
current = time.time()
elapsed = round(current - start, 2)
percent = round(y / camera.vsize * 100, 2)
if y != 0:
t = round((1 / (y / camera.vsize)) * elapsed - elapsed, 2)
print(
"\r"
+ str(percent).rjust(5)
+ "% : "
+ str(t)
+ "s left : "
+ str(elapsed)
+ "s elapsed",
end=" ",
flush=True,
)
for x in range(camera.hsize):
ray = ray_for_pixel(camera, x, y)
color = color_at(world, ray)
write_pixel(image, x, y, color)
print()
return image
for y in range(canvas_pixels):
world_y = half - pixel_size * y
for x in range(canvas_pixels):
world_x = -half + pixel_size * x
pos = point(world_x, world_y, wall_z)
r = ray(ray_origin, normalize(pos - ray_origin))
xs = intersect(shape, r)
if hit(xs) is not None:
pnt = position(r, xs[0].t)
normal = normal_at(xs[0].object, pnt)
eye = -r.direction
color = lighting(xs[0].object.material, xs[0].object, light,
pnt, eye, normal)
write_pixel(canvas, x, y, color)
end = time.time()
print("Finished render.")
print(str(round(end - start, 2)) + "s")
start = time.time()
print("Start writing file...")
canvas_to_ppm(canvas).write_file("images/sphere.ppm")
end = time.time()
print("Finished writing file.")
print(str(round(end - start, 2)) + "s")
def step_impl(context):
write_pixel(context.c, 4, 2, context.c3)
def step_impl(context):
write_pixel(context.c, 2, 1, context.c2)
def step_impl(context):
write_pixel(context.c, 0, 0, context.c1)
def step_impl(context):
write_pixel(context.c, 2, 3, context.red)
def step_impl(context, x, y):
canvas.write_pixel(getattr(context, can), w, h, getattr(context, color))