def test_elevation_color(self):
for i in range(0, 20):
v = i / 2.0
c = ra, ga, ba = elevation_color(v)
delta = 0.0000001
c_low = rb, gb, bb = elevation_color(v - delta)
c_high = rc, gc, bc = elevation_color(v + delta)
# we want values to be in range
self._assert_is_valid_color(c, "color for %f" % v)
self._assert_is_valid_color(c_low, "color for %f (low)" % (v - delta))
self._assert_is_valid_color(c_high, "color for %f (high)" % (v + delta))
def test_elevation_color(self):
for i in range(0, 20):
v = i / 2.0
c = ra, ga, ba = elevation_color(v)
delta = 0.0000001
c_low = rb, gb, bb = elevation_color(v - delta)
c_high = rc, gc, bc = elevation_color(v + delta)
# we want values to be in range
self._assert_is_valid_color(c, "color for %f" % v)
self._assert_is_valid_color(c_low,
"color for %f (low)" % (v - delta))
self._assert_is_valid_color(c_high,
"color for %f (high)" % (v + delta))
def draw_simple_elevation_on_screen(world, canvas):
width = world.width
height = world.height
for y in range(0, height):
for x in range(0, width):
e = world.elevation['data'][y][x]
r, g, b = elevation_color(e)
col = QtGui.QColor(int(r * 255), int(g * 255), int(b * 255))
canvas.setPixel(x, y, col.rgb())
