def main():
sdl2.ext.init()
window = sdl2.ext.Window("3d", size=(640, 480))
window.show()
window_surface = window.get_surface()
pixels = sdl2.ext.PixelView(window_surface)
running = True
camera = Camera(640, 480)
ladder = Ladder(50, 50, STEP_COUNT)
operation = R
selected_axis = Y
is_changed = True
last_frame_time = time.time()
while running:
events = sdl2.ext.get_events()
for event in events:
if event.type == sdl2.SDL_QUIT:
running = False
break
elif event.type == sdl2.SDL_MOUSEBUTTONUP:
x, y = ctypes.c_int(0), ctypes.c_int(0)
sdl2.mouse.SDL_GetMouseState(ctypes.byref(x), ctypes.byref(y))
print(x.value, y.value)
break
elif event.type == SDL_KEYDOWN:
if event.key.keysym.sym == SDLK_z:
print('selected Z')
selected_axis = Z
elif event.key.keysym.sym == SDLK_x:
print('selected X')
selected_axis = X
elif event.key.keysym.sym == SDLK_y:
print('selected Y')
selected_axis = Y
elif event.key.keysym.sym == SDLK_t:
print('selected translating')
operation = T
elif event.key.keysym.sym == SDLK_s:
print('selected scaling')
operation = S
elif event.key.keysym.sym == SDLK_r:
print('selected rotating')
operation = R
elif event.key.keysym.sym == SDLK_c:
print('selected camera')
operation = C
elif event.key.keysym.sym == SDLK_RIGHT or event.key.keysym.sym == SDLK_LEFT:
sign = 1 if event.key.keysym.sym == SDLK_RIGHT else -1
is_changed = True
if operation == T:
if selected_axis == X:
ladder.translate_x(sign * D_DISTANCE)
elif selected_axis == Y:
ladder.translate_y(sign * D_DISTANCE)
elif selected_axis == Z:
ladder.translate_z(sign * D_DISTANCE)
elif operation == S:
if event.key.keysym.sym == SDLK_RIGHT:
ladder.plus_scale()
else:
ladder.minus_scale()
elif operation == R:
if selected_axis == X:
ladder.rotate_x(sign * D_ANGLE)
elif selected_axis == Y:
ladder.rotate_y(sign * D_ANGLE)
elif selected_axis == Z:
ladder.rotate_z(sign * D_ANGLE)
elif operation == C:
camera.change_p(sign * D_CAMERA_P)
curr_time = time.time()
if curr_time - last_frame_time > FRAME_INTERVAL:
ladder.rotate_y(5)
is_changed = True
last_frame_time = curr_time
if is_changed:
is_changed = False
clear(window_surface)
draw_projection(pixels, camera, [ladder])
window.refresh()
sdl2.ext.quit()
return 0
