def tscheme_rgb(red, green, blue):
"""Return a color from RED, GREEN, and BLUE values from 0 to 1."""
colors = (red, green, blue)
for x in colors:
if x < 0 or x > 1:
raise SchemeError("Illegal color intensity in " + repl_str(colors))
scaled = tuple(int(x*255) for x in colors)
return '"#%02x%02x%02x"' % scaled
def tscheme_pixelsize(size):
"""Change pixel size to SIZE."""
_check_nums(size)
if size <= 0 or not isinstance(size, int):
raise SchemeError("Invalid pixel size: " + repl_str(size))
tscheme_pixel.size = size
def scheme_print(val):
print(repl_str(val))
def scheme_error(msg=None):
msg = "" if msg is None else repl_str(msg)
raise SchemeError(msg)
def scheme_display(val):
if scheme_stringp(val):
val = eval(val)
print(repl_str(val), end="")