本篇内容主要讲解“Pygame鼠标进行图片的移动与缩放怎么实现”，感兴趣的朋友不妨来看看。本文介绍的方法操作简单快捷，实用性强。下面就让小编来带大家学习“Pygame鼠标进行图片的移动与缩放怎么实现”吧!
# -*- coding: UTF-8 -*-#!/usr/bin/env python3# @Time : 2021.12# @Author : 高二水令# @Software: 图层拖拽缩放import osimport sysimport pygamefrom pygame.locals import *class Background(pygame.sprite.Sprite): def __init__(self, image_file, location): pygame.sprite.Sprite.__init__(self) #call Sprite initializer self.image = pygame.image.load(image_file) self.rect = self.image.get_rect() self.rect.left, self.rect.top = location# 写一个函数，判断一个点是否在某个范围内# 点（x,y）# 范围 rect(x,y,w,h)def is_in_rect(pos, rect): x, y = pos rx, ry, rw, rh = rect if (rx <= x <= rx+rw) and (ry <= y <= ry+rh): return True return Falsedef move_image(pic_bottom,pic_upper,ssn):#pic_bottom,pic_upper分别是背景图和上层拖拽图层，ssn是我自己设置的路径信息、不需要可以删去、需要直接运行可以改成main() pygame.init() screen = pygame.display.set_mode((710, 520)) BackGround = Background(pic_bottom, [0, 0]) screen.fill((255, 255, 255)) myimage = pygame.image.load('.\\next.png') myimage = pygame.transform.scale(myimage, (90, 40)) myimage_x = 600 myimage_y = 480 scale_ = pygame.image.load('.\\Avel_scale.tif') scale_ = pygame.transform.scale(scale_, (70, 520)) scale_x = 632 scale_y = 0 screen.blit(BackGround.image, BackGround.rect) screen.blit(scale_, (scale_x, scale_y)) screen.blit(myimage, (myimage_x, myimage_y)) pygame.display.set_caption('图像定标') size = [] location = [0, 0] image = pygame.image.load(pic_upper) image_x = 100 image_y = 100 screen.blit(image,(image_x, image_y)) pygame.display.flip() is_move = False run_flag = True while (run_flag==True): for event in pygame.event.get(): if event.type == pygame.QUIT: exit() # 鼠标按下、让状态变成可以移动 if event.type == pygame.MOUSEBUTTONDOWN: w,h = image.get_size() if is_in_rect(event.pos, (image_x, image_y, w, h)): is_move = True # 鼠标弹起、让状态变成不可以移动 if event.type == pygame.MOUSEBUTTONUP: is_move = False # 鼠标移动对应的事件 if event.type == pygame.MOUSEMOTION: if is_move: screen.fill((255, 255, 255)) screen.blit(BackGround.image, BackGround.rect) x, y = event.pos image_w, image_h = image.get_size() # 保证鼠标在图片的中心 image_y = y-image_h/2 image_x = x-image_w/2 screen.blit(scale_, (scale_x, scale_y)) screen.blit(myimage, (myimage_x, myimage_y)) screen.blit(image, (image_x, image_y)) #print(image.get_rect()) location[0]=event.pos[0] location[1] = event.pos[1] print(event.pos) pygame.display.update()#鼠标按钮响应、是点击图片的位置范围进行跳转 if event.type == pygame.MOUSEBUTTONDOWN and myimage_x <= event.pos[0] <= myimage_x + 90 and \ myimage_y <= event.pos[1] <= myimage_y + 40: # 判断鼠标位置以及是否摁了下去#这里可以写按钮响应的功能 pygame.quit()#关闭原来窗口 #os.system('ui.py') run_flag = False#跳出循环(不然会报错) #sys.exit() #滚轮缩放 if event.type == MOUSEWHEEL: screen.fill((255, 255, 255)) screen.blit(BackGround.image, BackGround.rect) image_width = image.get_width() image_heigt = image.get_height() image = pygame.transform.scale(image, ( image_width + event.y * image_width / image_heigt * 10, image_heigt + event.y * 10)) screen.blit(scale_, (scale_x, scale_y)) screen.blit(myimage, (myimage_x, myimage_y)) screen.blit(image, (image_x, image_y)) #print(event) print(image_width, image_heigt) #print(event.flipped) pygame.display.update()预览图大概是这样：
如需直接运行就直接把def move_image(pic_bottom,pic_upper,ssn)这句改成if __name__ == '__main__':并把对应的值传进对应的位置去
到此，相信大家对“Pygame鼠标进行图片的移动与缩放怎么实现”有了更深的了解，不妨来实际操作一番吧！这里是编程网网站，更多相关内容可以进入相关频道进行查询，关注我们，继续学习！
