199 lines
6.2 KiB
Python
199 lines
6.2 KiB
Python
#!/usr/bin/env python
|
|
""" pygame.examples.blit_blends
|
|
|
|
Blending colors in different ways with different blend modes.
|
|
|
|
It also shows some tricks with the surfarray.
|
|
Including how to do additive blending.
|
|
|
|
|
|
Keyboard Controls
|
|
-----------------
|
|
|
|
* R, G, B - add a bit of Red, Green, or Blue.
|
|
* A - Add blend mode
|
|
* S - Subtractive blend mode
|
|
* M - Multiply blend mode
|
|
* = key BLEND_MAX blend mode.
|
|
* - key BLEND_MIN blend mode.
|
|
* 1, 2, 3, 4 - use different images.
|
|
|
|
"""
|
|
import os
|
|
import pygame as pg
|
|
import time
|
|
|
|
main_dir = os.path.split(os.path.abspath(__file__))[0]
|
|
data_dir = os.path.join(main_dir, "data")
|
|
|
|
try:
|
|
import pygame.surfarray
|
|
import numpy
|
|
except ImportError:
|
|
print("no surfarray for you! install numpy")
|
|
|
|
|
|
def main():
|
|
pg.init()
|
|
pg.mixer.quit() # remove ALSA underflow messages for Debian squeeze
|
|
screen = pg.display.set_mode((640, 480))
|
|
|
|
im1 = pg.Surface(screen.get_size())
|
|
# im1= im1.convert()
|
|
im1.fill((100, 0, 0))
|
|
|
|
im2 = pg.Surface(screen.get_size())
|
|
im2.fill((0, 50, 0))
|
|
# we make a srcalpha copy of it.
|
|
# im3= im2.convert(SRCALPHA)
|
|
im3 = im2
|
|
im3.set_alpha(127)
|
|
|
|
images = {}
|
|
images[pg.K_1] = im2
|
|
images[pg.K_2] = pg.image.load(os.path.join(data_dir, "chimp.png"))
|
|
images[pg.K_3] = pg.image.load(os.path.join(data_dir, "alien3.gif"))
|
|
images[pg.K_4] = pg.image.load(os.path.join(data_dir, "liquid.bmp"))
|
|
img_to_blit = im2.convert()
|
|
iaa = img_to_blit.convert_alpha()
|
|
|
|
blits = {}
|
|
blits[pg.K_a] = pg.BLEND_ADD
|
|
blits[pg.K_s] = pg.BLEND_SUB
|
|
blits[pg.K_m] = pg.BLEND_MULT
|
|
blits[pg.K_EQUALS] = pg.BLEND_MAX
|
|
blits[pg.K_MINUS] = pg.BLEND_MIN
|
|
|
|
blitsn = {}
|
|
blitsn[pg.K_a] = "BLEND_ADD"
|
|
blitsn[pg.K_s] = "BLEND_SUB"
|
|
blitsn[pg.K_m] = "BLEND_MULT"
|
|
blitsn[pg.K_EQUALS] = "BLEND_MAX"
|
|
blitsn[pg.K_MINUS] = "BLEND_MIN"
|
|
|
|
screen.blit(im1, (0, 0))
|
|
pg.display.flip()
|
|
clock = pg.time.Clock()
|
|
print("one pixel is:%s:" % [im1.get_at((0, 0))])
|
|
|
|
going = True
|
|
while going:
|
|
clock.tick(60)
|
|
|
|
for event in pg.event.get():
|
|
if event.type == pg.QUIT:
|
|
going = False
|
|
if event.type == pg.KEYDOWN:
|
|
usage()
|
|
|
|
if event.type == pg.KEYDOWN and event.key == pg.K_ESCAPE:
|
|
going = False
|
|
|
|
elif event.type == pg.KEYDOWN and event.key in images.keys():
|
|
img_to_blit = images[event.key]
|
|
iaa = img_to_blit.convert_alpha()
|
|
|
|
elif event.type == pg.KEYDOWN and event.key in blits.keys():
|
|
t1 = time.time()
|
|
# blits is a dict keyed with key -> blit flag. eg BLEND_ADD.
|
|
im1.blit(img_to_blit, (0, 0), None, blits[event.key])
|
|
t2 = time.time()
|
|
print("one pixel is:%s:" % [im1.get_at((0, 0))])
|
|
print("time to do:%s:" % (t2 - t1))
|
|
|
|
elif event.type == pg.KEYDOWN and event.key in [pg.K_t]:
|
|
|
|
for bkey in blits.keys():
|
|
t1 = time.time()
|
|
|
|
for x in range(300):
|
|
im1.blit(img_to_blit, (0, 0), None, blits[bkey])
|
|
|
|
t2 = time.time()
|
|
|
|
# show which key we're doing...
|
|
onedoing = blitsn[bkey]
|
|
print("time to do :%s: is :%s:" % (onedoing, t2 - t1))
|
|
|
|
elif event.type == pg.KEYDOWN and event.key in [pg.K_o]:
|
|
t1 = time.time()
|
|
# blits is a dict keyed with key -> blit flag. eg BLEND_ADD.
|
|
im1.blit(iaa, (0, 0))
|
|
t2 = time.time()
|
|
print("one pixel is:%s:" % [im1.get_at((0, 0))])
|
|
print("time to do:%s:" % (t2 - t1))
|
|
|
|
elif event.type == pg.KEYDOWN and event.key == pg.K_SPACE:
|
|
# this additive blend without clamp two surfaces.
|
|
# im1.set_alpha(127)
|
|
# im1.blit(im1, (0,0))
|
|
# im1.set_alpha(255)
|
|
t1 = time.time()
|
|
|
|
im1p = pygame.surfarray.pixels2d(im1)
|
|
im2p = pygame.surfarray.pixels2d(im2)
|
|
im1p += im2p
|
|
del im1p
|
|
del im2p
|
|
t2 = time.time()
|
|
print("one pixel is:%s:" % [im1.get_at((0, 0))])
|
|
print("time to do:%s:" % (t2 - t1))
|
|
|
|
elif event.type == pg.KEYDOWN and event.key in [pg.K_z]:
|
|
t1 = time.time()
|
|
im1p = pygame.surfarray.pixels3d(im1)
|
|
im2p = pygame.surfarray.pixels3d(im2)
|
|
im1p16 = im1p.astype(numpy.uint16)
|
|
im2p16 = im1p.astype(numpy.uint16)
|
|
im1p16 += im2p16
|
|
im1p16 = numpy.minimum(im1p16, 255)
|
|
pygame.surfarray.blit_array(im1, im1p16)
|
|
|
|
del im1p
|
|
del im2p
|
|
t2 = time.time()
|
|
print("one pixel is:%s:" % [im1.get_at((0, 0))])
|
|
print("time to do:%s:" % (t2 - t1))
|
|
|
|
elif event.type == pg.KEYDOWN and event.key in [pg.K_r, pg.K_g, pg.K_b]:
|
|
# this adds one to each pixel.
|
|
colmap = {}
|
|
colmap[pg.K_r] = 0x10000
|
|
colmap[pg.K_g] = 0x00100
|
|
colmap[pg.K_b] = 0x00001
|
|
im1p = pygame.surfarray.pixels2d(im1)
|
|
im1p += colmap[event.key]
|
|
del im1p
|
|
print("one pixel is:%s:" % [im1.get_at((0, 0))])
|
|
|
|
elif event.type == pg.KEYDOWN and event.key == pg.K_p:
|
|
print("one pixel is:%s:" % [im1.get_at((0, 0))])
|
|
|
|
elif event.type == pg.KEYDOWN and event.key == pg.K_f:
|
|
# this additive blend without clamp two surfaces.
|
|
|
|
t1 = time.time()
|
|
im1.set_alpha(127)
|
|
im1.blit(im2, (0, 0))
|
|
im1.set_alpha(255)
|
|
|
|
t2 = time.time()
|
|
print("one pixel is:%s:" % [im1.get_at((0, 0))])
|
|
print("time to do:%s:" % (t2 - t1))
|
|
|
|
screen.blit(im1, (0, 0))
|
|
pg.display.flip()
|
|
|
|
pg.quit()
|
|
|
|
|
|
def usage():
|
|
print("press keys 1-5 to change image to blit.")
|
|
print("A - ADD, S- SUB, M- MULT, - MIN, + MAX")
|
|
print("T - timing test for special blend modes.")
|
|
|
|
|
|
if __name__ == "__main__":
|
|
usage()
|
|
main()
|