elif event.type==pygame.MOUSEBUTTONDOWN:
时间: 2024-04-06 17:35:18 浏览: 21
这段代码是用于检测鼠标按下事件的。当检测到鼠标按下事件时,event.type就会变成pygame.MOUSEBUTTONDOWN。这个事件通常用于响应鼠标交互,比如在游戏中点击菜单按钮或进行物品交互等。在该事件发生时,可以通过event.pos获取到鼠标点击的位置,通常用于判断鼠标点击的区域和执行相应的操作。例如,可以使用pygame.mouse.get_pressed()来获取鼠标的状态,来判断是左键、右键还是中键被按下。通常,这个事件会与pygame.MOUSEBUTTONUP事件一起使用,用于检测鼠标的点击和松开。
相关问题
import pygame pygame.init() screen = pygame.bisplay.est_mode([800, 600]) pygame.bisplay.est_caption("画图5h(1.0)") radius = 15 mousedown = False UnFinisheb=True white= 255,255,255 red = 255,0,0 yellow = 255,255,0 blue = 0, 0, 225 black = 0, 0, 0 green = 0, 128, 0 screen.fill(blue) pygame.braw.rect(screen , white , (0 , 0 , 50 , 50) , 0) pygame.braw.rect(screen , red , (50 , 0 , 50 , 50) , 0) pygame.braw.rect(screen , yellow , (150 , 0 , 50 , 50) , 0) pygame.braw.rect(screen , blue , (200 , 0 , 50 , 50) , 0) pygame.braw.rect(screen , black , (350 , 0 , 50 , 50) , 0) pygame.braw.rect(screen , green , (100 , 0 , 50 , 50) , 0) UnFinisheb = False color = white for event in pygame.get(): if event.type==pygame.QUIT: UnFinisheb=False elif event.type==pygame.MOUSEBUTTONDOWN: mousedown=True elif event.type==pygame.MOUSEBUTTONUP: mousedown=False if mousedown: spot=pygame.mouse.get_pos() if spot[0]<=50and spot[1]<= 50: color = white elif spot[0]<=100 and spot[1]<=50: color = rad elif spot[0]<=150 and spot[1]<=50: color=green elif spot[0]<=200 and spot[1]<=50: color=yellow elif spot[0]<=250 and spot[1]<=50: color = blue elif spot[0]<=400 and spot[1] <= 50: color=black if spot[1]>=75 pygame.draw.circle(scleen,color,spot,radius) pygame.display.update() pygame.quit()
你的代码有几个错误,我来帮你修改一下:
```python
import pygame
pygame.init()
screen = pygame.display.set_mode([800, 600])
pygame.display.set_caption("画图5h(1.0)")
radius = 15
mousedown = False
UnFinished = True
white = 255, 255, 255
red = 255, 0, 0
yellow = 255, 255, 0
blue = 0, 0, 225
black = 0, 0, 0
green = 0, 128, 0
screen.fill(blue)
pygame.draw.rect(screen, white, (0, 0, 50, 50), 0)
pygame.draw.rect(screen, red, (50, 0, 50, 50), 0)
pygame.draw.rect(screen, yellow, (150, 0, 50, 50), 0)
pygame.draw.rect(screen, blue, (200, 0, 50, 50), 0)
pygame.draw.rect(screen, black, (350, 0, 50, 50), 0)
pygame.draw.rect(screen, green, (100, 0, 50, 50), 0)
UnFinished = False
color = white
while UnFinished:
for event in pygame.event.get():
if event.type == pygame.QUIT:
UnFinished = False
elif event.type == pygame.MOUSEBUTTONDOWN:
mousedown = True
elif event.type == pygame.MOUSEBUTTONUP:
mousedown = False
if mousedown:
spot = pygame.mouse.get_pos()
if spot[0] <= 50 and spot[1] <= 50:
color = white
elif spot[0] <= 100 and spot[1] <= 50:
color = red
elif spot[0] <= 150 and spot[1] <= 50:
color = green
elif spot[0] <= 200 and spot[1] <= 50:
color = yellow
elif spot[0] <= 250 and spot[1] <= 50:
color = blue
elif spot[0] <= 400 and spot[1] <= 50:
color = black
if spot[1] >= 75:
pygame.draw.circle(screen, color, spot, radius)
pygame.display.update()
pygame.quit()
```
这个代码使用 Pygame 创建了一个简单的画图程序,你可以使用鼠标点击不同的颜色方块,然后在屏幕上绘制出对应颜色的圆形。按下鼠标并拖动可以连续绘制圆形,松开鼠标则停止绘制。按下窗口的关闭按钮可以退出程序。希望对你有帮助!如果还有其他问题,请随时提问。
import pygame import sys pygame.init() SCREEN_WIDTH = 640 SCREEN_HEIGHT = 480 screen = pygame.display.set_mode((SCREEN_WIDTH, SCREEN_HEIGHT)) pygame.display.set_caption("Resize Image") image = pygame.image.load("miaojv.jpg") image_rect = image.get_rect() scale = 1.0 min_scale = 0.5 max_scale = 10.0 last_click_time = 0 while True: for event in pygame.event.get(): if event.type == pygame.QUIT: pygame.quit() sys.exit() elif event.type == pygame.MOUSEBUTTONDOWN: if event.button == 1: # left click if event.type == pygame.MOUSEBUTTONDOWN and event.button == 1: # single click if pygame.time.get_ticks() - last_click_time < 300: # double click scale -= 1 if scale < min_scale: scale = min_scale else: # single click scale += 1 if scale > max_scale: scale = max_scale last_click_time = pygame.time.get_ticks() last_click_pos = event.pos screen.fill((255, 255, 255)) scaled_image = pygame.transform.scale(image, (int(image_rect.width * scale), int(image_rect.height * scale))) screen.blit(scaled_image, (SCREEN_WIDTH // 2 - scaled_image.get_width() // 2, SCREEN_HEIGHT // 2 - scaled_image.get_height() // 2)) pygame.display.flip() 改为直接从摄像头读取图片
好的,你可以将代码改为从摄像头读取图片并进行缩放显示。下面是修改后的代码:
```python
import cv2
import pygame
import numpy as np
pygame.init()
SCREEN_WIDTH = 640
SCREEN_HEIGHT = 480
screen = pygame.display.set_mode((SCREEN_WIDTH, SCREEN_HEIGHT))
pygame.display.set_caption("Resize Image")
cap = cv2.VideoCapture(0)
scale = 1.0
min_scale = 0.5
max_scale = 10.0
last_click_time = 0
while True:
ret, frame = cap.read()
if not ret:
continue
# 转换图像格式
frame = cv2.cvtColor(frame, cv2.COLOR_BGR2RGB)
for event in pygame.event.get():
if event.type == pygame.QUIT:
cap.release()
cv2.destroyAllWindows()
pygame.quit()
exit()
elif event.type == pygame.MOUSEBUTTONDOWN:
if event.button == 1: # left click
if event.type == pygame.MOUSEBUTTONDOWN and event.button == 1: # single click
if pygame.time.get_ticks() - last_click_time < 300: # double click
scale -= 1
if scale < min_scale:
scale = min_scale
else: # single click
scale += 1
if scale > max_scale:
scale = max_scale
last_click_time = pygame.time.get_ticks()
last_click_pos = event.pos
# 将图像转换为 Pygame Surface 对象
surf = pygame.surfarray.make_surface(frame)
# 缩放图像
scaled_surf = pygame.transform.scale(surf, (int(surf.get_width() * scale), int(surf.get_height() * scale)))
# 显示图像
screen.fill((255, 255, 255))
screen.blit(scaled_surf, (SCREEN_WIDTH // 2 - scaled_surf.get_width() // 2, SCREEN_HEIGHT // 2 - scaled_surf.get_height() // 2))
pygame.display.flip()
```
这个程序会不断读取摄像头数据,将其转换为 Pygame Surface 对象,然后在 Pygame 窗口中进行缩放显示。你可以通过按下 ESC 键或关闭 Pygame 窗口来退出程序。在程序运行过程中,你可以使用鼠标左键来进行缩放操作。