def draw_points(renderer):
global current_alpha, current_color, cycle_direction
viewport = sdl2.SDL_Rect()
sdl2.SDL_RenderGetViewport(renderer, ctypes.byref(viewport))
for i in range(0, 10 * NUM_OBJECTS):
current_color = current_color + cycle_direction
if current_color < 0:
current_color = 0
cycle_direction = -cycle_direction
if current_color > 255:
current_color = 255
cycle_direction = -cycle_direction
sdl2.SDL_SetRenderDrawColor(renderer, 255, current_color,
current_color, current_alpha)
x = int(random.random() * 65535) % viewport.w
y = int(random.random() * 65535) % viewport.h
sdl2.SDL_RenderDrawPoint(renderer, x, y)
def _draw_point(self, x, y):
sdl2.SDL_RenderDrawPoint(self._sdl_renderer, x, y)
def render_pixel(self, x, y, colour):
# can't use the below as too slow
big_x = 5 * x
big_y = 5 * y
sdl2.SDL_SetRenderDrawColor(self.renderer, *colour, sdl2.SDL_ALPHA_OPAQUE)
sdl2.SDL_RenderDrawPoint(self.renderer, big_x + 1, big_y)
sdl2.SDL_RenderDrawPoint(self.renderer, big_x + 2, big_y)
sdl2.SDL_RenderDrawPoint(self.renderer, big_x, big_y + 1)
sdl2.SDL_RenderDrawPoint(self.renderer, big_x + 1, big_y + 1)
sdl2.SDL_RenderDrawPoint(self.renderer, big_x + 2, big_y + 1)
sdl2.SDL_RenderDrawPoint(self.renderer, big_x + 3, big_y + 1)
sdl2.SDL_RenderDrawPoint(self.renderer, big_x, big_y + 2)
sdl2.SDL_RenderDrawPoint(self.renderer, big_x + 1, big_y + 2)
sdl2.SDL_RenderDrawPoint(self.renderer, big_x + 2, big_y + 2)
sdl2.SDL_RenderDrawPoint(self.renderer, big_x + 3, big_y + 2)
sdl2.SDL_RenderDrawPoint(self.renderer, big_x + 1, big_y + 3)
sdl2.SDL_RenderDrawPoint(self.renderer, big_x + 2, big_y + 3)
def render_pixel(self, x, y, colour):
sdl2.SDL_SetRenderDrawColor(self.renderer, *colour, sdl2.SDL_ALPHA_OPAQUE)
sdl2.SDL_RenderDrawPoint(self.renderer, x, y)
def render(self, render_context):
sdl2.SDL_RenderDrawPoint(render_context.sdl_renderer, int(self.x),
int(self.y))
def _draw_point(self, x, y, point_index):
if self._is_point_visible((x, y)):
sdl2.SDL_RenderDrawPoint(self._sdl_renderer, x, y)
else:
if self._is_draw_dash_point(point_index):
sdl2.SDL_RenderDrawPoint(self._sdl_renderer, x, y)
def setpixel(renderer, x, y):
sdl2.SDL_RenderDrawPoint(renderer, x, y)