def main():
model = Model("obj/african_head.obj")
image = TGAImage(width, height, Format.RGB)
# model.write("info.txt")
zbuffer = []
for i in range(0, image.width * image.height):
zbuffer.append(-sys.maxint - 1)
for i in range(0, len(model.faces)):
screen_coord = [Vector(), Vector(), Vector()]
world_coords = [Vector(), Vector(), Vector()]
for j in range(0, 3):
world_coord_vector = model.get_vert(i, j)
screen_coord[j].x = int((world_coord_vector.x + 1.) * width / 2)
screen_coord[j].y = int((world_coord_vector.y + 1.) * height / 2)
screen_coord[j].z = int((world_coord_vector.z + 1.) * depth / 2)
world_coords[j] = world_coord_vector
# n = (world_coords[2] - world_coords[0]) ^ (world_coords[1] - world_coords[0])
# norm = n.normalize()
# intensity = norm.mul(light_intensity_vector)
# if intensity < 0: # skip invisible triangle
# continue
uv = [Vector(), Vector(), Vector()]
for k in range(0, 3):
uv[k] = model.get_uv(i, k)
norms = [Vector(), Vector(), Vector()]
for k in range(0, 3):
norms[k] = model.get_norm(i, k)
# random_color = Color(randint(0, 255), randint(0, 255), randint(0, 255), 255)
# color = Color(int(intensity * 255), int(intensity * 255), int(intensity * 255), 255)
triangle(screen_coord[0], screen_coord[1], screen_coord[2], uv[0], uv[1], uv[2], norms[0], norms[1], norms[2], image, zbuffer, model)
image.write("output.tga")
