def draw_point(self, points, color=None):
"""Draws one or multiple points on the rendering context."""
# (x1, y1, x2, y2, ...)
pcount = len(points)
if (pcount % 2) != 0:
raise ValueError("points does not contain a valid set of points")
if pcount == 2:
if color:
tmp = self.color
self.color = color
try:
x, y = points
render.render_draw_point(self.renderer, x, y)
finally:
if color:
self.color = tmp
else:
x = 0
ptlist = []
while x < pcount:
ptlist.append(SDL_Point(points[x], points[x + 1]))
x += 2
if color:
tmp = self.color
self.color = color
try:
render.render_draw_points(self.renderer, ptlist)
finally:
if color:
self.color = tmp
def test_render_draw_point(self):
points = ((-4, -3), (-4, 3), (4, -3),
(0, 0), (1, 1), (10, 10), (99, 99),
(4, 22), (57, 88), (45, 15),
(100, 100)
)
r, g, b, a = 0xAA, 0xBB, 0xCC, 0xDD
w, h = 100, 100
sf = surface.create_rgb_surface(w, h, 32, 0xFF000000, 0x00FF0000,
0x0000FF00, 0x000000FF)
color = pixels.map_rgba(sf.format, r, g, b, a)
renderer = render.create_software_renderer(sf)
render.set_render_draw_color(renderer, r, g, b, a)
for x, y in points:
render.render_draw_point(renderer, x, y)
render.render_present(renderer)
view = pvid.PixelView(sf)
for x, y in points:
npx = max(x + 1, w)
npy = max(y + 1, h)
ppx = max(x - 1, 0)
ppy = max(y - 1, 0)
if x < 0 or x >= w or y < 0 or y >= h:
continue
self.assertEqual(hex(view[y][x]), hex(color))
if (npx, npy) not in points:
self.assertNotEqual(hex(view[npy][npx]), hex(color))
if (ppx, ppy) not in points:
self.assertNotEqual(hex(view[ppy][ppx]), hex(color))
render.destroy_renderer(renderer)
del view
surface.free_surface(sf)