pygame课的裁剪问题
import pygameimport sys
from pygame.locals import *
pygame.init()
size = width,height = 800,600
screen = pygame.display.set_mode(size)
bg = (255,255,255)
turtle = pygame.image.load('turtle.png')
pygame.display.set_caption("小裁缝")
#获取图形当前位置
position = turtle.get_rect()
#修改图形位置,使其居中
position.center = width // 2, height // 2
clock = pygame.time.Clock()
#选择边框
select = 0
#拖拽边框
drag = 0
#先初始化一个矩形
rectangle = pygame.Rect(0,0,0,0)
while True:
for event in pygame.event.get():
if event.type == pygame.QUIT:
sys.exit()
if event.type == MOUSEBUTTONDOWN:
if event.button == 1:
if select == 0 and drag == 0:
mouse_rpos = event.pos #得到开始点击鼠标时的坐标
select = 1
elif select == 2 and drag == 0:
c_rec = screen.subsurface(rectangle).copy()
c_rec_pos = c_rec.get_rect()
drag = 1
elif select == 2 and drag == 2:#第三次点击初始化
select = 0
drag = 0
elif event.type == MOUSEBUTTONUP:
if event.button == 1:
if select == 1 and drag == 0:
pos_stop = event.pos
select = 2
if select == 2 and drag == 1:
drag == 2
screen.fill(bg)
screen.blit(turtle, position)
if select: #当鼠标点击时,开始画图
rect_pos = pygame.mouse.get_pos()
if select == 1:#第一次点击时
pos_stop= rect_pos
rectangle.left,rectangle.top = mouse_rpos
rectangle.width,rectangle.height = pos_stop - mouse_rpos,pos_stop - mouse_rpos
pygame.draw.rect(screen, (0, 0, 0), rectangle, 1)
if drag:
if drag == 1:#正在拖拽
c_rec_pos.center= rect_pos
screen.blit(c_rec,c_rec_pos)
pygame.display.flip()
clock.tick(30)
为什么我的图形裁剪完之后松开鼠标,图形仍跟随鼠标
import pygame
import sys
from pygame.locals import *
pygame.init()
size = width, height = 800, 600
bg = (255, 255, 255)
clock = pygame.time.Clock()
screen = pygame.display.set_mode(size)
pygame.display.set_caption("FishC Demo")
turtle = pygame.image.load("turtle.png")
# 0 -> 未选择,1 -> 选择中,2 -> 完成选择
select = 0
select_rect = pygame.Rect(0, 0, 0, 0)
# 0 -> 未拖拽,1 -> 拖拽中,2 -> 完成拖拽
drag = 0
position = turtle.get_rect()
position.center = width // 2, height // 2
while True:
for event in pygame.event.get():
if event.type == QUIT:
sys.exit()
elif event.type == MOUSEBUTTONDOWN:
if event.button == 1:
# 第一次点击,选择范围
if select == 0 and drag == 0:
pos_start = event.pos
select = 1
#第二次点击,推拽图像
elif select == 2 and drag == 0:
capture = screen.subsurface(select_rect).copy()
cap_rect = capture.get_rect()
drag = 1
# # 第三次点击,初始化
elif select == 2 and drag == 2:
select = 0
drag = 0
elif event.type == MOUSEBUTTONUP:
if event.button == 1:
#第一次释放,结束选择
if select == 1 and drag == 0:
pos_stop = event.pos
select = 2
# 第二次释放,结束拖拽
if select == 2 and drag == 1:
drag = 2
screen.fill(bg)
screen.blit(turtle, position)
#实时绘制选择框
if select:
mouse_pos = pygame.mouse.get_pos()
if select == 1:
pos_stop = mouse_pos
select_rect.left, select_rect.top = pos_start
select_rect.width, select_rect.height = pos_stop - pos_start, pos_stop - pos_start
pygame.draw.rect(screen, (0, 0, 0), select_rect, 1)
# 拖拽裁剪的图像
if drag:
if drag == 1:
cap_rect.center = mouse_pos
screen.blit(capture, cap_rect)
pygame.display.flip()
clock.tick(30)
源码
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