线条未正确淡入和淡出

问题描述 投票：0回答：1

我正在开发一个 Pygame 项目，其中的线条应该在创建时淡入并随着时间的推移淡出。但是，我遇到了一个问题，线条似乎没有按预期淡入或淡出。

我希望线条在第一次创建时逐渐淡入，并随着时间的推移淡出，但淡入淡出部分似乎没有按预期工作。有人可以帮我找出问题并提出解决方案吗？

编辑：

我的新代码：

import pygame
import random
import math
pygame.init()
WIDTH, HEIGHT = 800, 600
FPS = 60
LINE_COLOR = (255, 255, 255)
BACKGROUND_COLOR = (0, 0, 0)
LINE_LENGTH = 100
CONNECT_DISTANCE = 50
MAGNET_RADIUS = 100
MAX_LINES = 50
FADE_OUT_TIME = 3 * FPS
FADE_IN_TIME = 1 * FPS
speed_of_rotation = 0.02
def create_line():
    return {'x': random.randint(0, WIDTH),'y': random.randint(0, HEIGHT),'angle': random.uniform(0, 2 * math.pi),'target_angle': random.uniform(0, 2 * math.pi),'length': LINE_LENGTH,'style': 1,'fade_timer': 0}
def update_angle(line):
    angle_difference = line['target_angle'] - line['angle']
    if angle_difference != 0:
        line['angle'] += angle_difference / abs(angle_difference) * speed_of_rotation
def draw_line(line):
    if line['style'] == 1:
        end_x = line['x'] + line['length'] * math.cos(line['angle'])
        end_y = line['y'] + line['length'] * math.sin(line['angle'])
        pygame.draw.line(screen, LINE_COLOR, (line['x'], line['y']), (end_x, end_y), 2)
    elif line['style'] == 2:
        alpha = int((line['fade_timer'] / FADE_OUT_TIME) * 255)
        pygame.draw.line(screen, (LINE_COLOR[0], LINE_COLOR[1], LINE_COLOR[2], alpha),
                         (line['x'], line['y']),
                         (line['x'] + line['length'] * math.cos(line['angle']),
                          line['y'] + line['length'] * math.sin(line['angle'])), 2)
def connect_lines(line, other_line):
    distance = math.dist((line['x'], line['y']), (other_line['x'], other_line['y']))
    if distance < CONNECT_DISTANCE:
        pygame.draw.line(screen, LINE_COLOR, (line['x'], line['y']), (other_line['x'], other_line['y']), 2)
        pygame.draw.circle(screen, LINE_COLOR, (line['x'], line['y']), 5)
        pygame.draw.circle(screen, LINE_COLOR, (other_line['x'], other_line['y']), 5)
def dispose_line(line):
    line['x'] += math.cos(line['angle'])
    line['y'] += math.sin(line['angle'])
    if line['x'] < 0 or line['x'] > WIDTH or line['y'] < 0 or line['y'] > HEIGHT:
        return True
    return False
def fade_out_line(line):
    line['fade_timer'] += 1
    if line['fade_timer'] > FADE_OUT_TIME:
        return True
    return False
def connect_to_mouse(line, mouse_x, mouse_y):
    distance_to_mouse = math.dist((line['x'], line['y']), (mouse_x, mouse_y))
    if distance_to_mouse < MAGNET_RADIUS:
        angle_to_mouse = math.atan2(mouse_y - line['y'], mouse_x - line['x'])
        line['x'] += math.cos(angle_to_mouse) * 5
        line['y'] += math.sin(angle_to_mouse) * 5
        line['angle'] = angle_to_mouse
        line['target_angle'] = angle_to_mouse
lines = [create_line() for _ in range(MAX_LINES)]
screen = pygame.display.set_mode((WIDTH, HEIGHT))
pygame.display.set_caption("Magnet Lines")
clock = pygame.time.Clock()
running = True
while running:
    for event in pygame.event.get():
        if event.type == pygame.QUIT:
            running = False
    screen.fill(BACKGROUND_COLOR)
    if len(lines) < MAX_LINES and random.random() < 0.02:
        lines.append(create_line())
    for line in lines:
        update_angle(line)
        draw_line(line)
        for other_line in lines:
            if line != other_line:
                connect_lines(line, other_line)
        if line['style'] == 1:
            if dispose_line(line):
                lines.remove(line)
        elif line['style'] == 2:
            if fade_out_line(line):
                lines.remove(line)
        connect_to_mouse(line, *pygame.mouse.get_pos())
    pygame.display.flip()
    clock.tick(FPS)
python pygame
1个回答
0
投票

我找到了我想要的所有其他东西的解决方案，但我没有在问题中提到：

from pygame import init, QUIT
from pygame.draw import line as l, circle
from pygame.time import Clock
from pygame.display import set_mode, flip
from pygame.event import get
from pygame.mouse import get_pos
from random import randint, random, uniform
from math import sin, cos, dist, atan2
init()
CONNECT_DISTANCE = 50
MAGNET_RADIUS = 100
def update_angle(line):
    line['angle'] += line['rotation_speed']
    if line['angle'] > 2 * 3.141592653589793:
        line['angle'] -= 2 * 3.141592653589793
def draw_line(line):
    if line['timer'] == 0:
        lines.remove(line)
        return
    alpha = min([255, line['timer']])
    end_x = line['x'] + line['timer'] // 5 * cos(line['angle'])
    end_y = line['y'] + line['timer'] // 5 * sin(line['angle'])
    l(screen, (alpha, alpha, alpha), (line['x'], line['y']), (end_x, end_y), 1)
def connect_lines(line, other_line):
    x1 = line['x'] + line['timer'] // 5 * cos(line['angle'])
    y1 = line['y'] + line['timer'] // 5 * sin(line['angle'])
    x2 = other_line['x'] + other_line['timer'] // 5 * cos(other_line['angle'])
    y2 = other_line['y'] + other_line['timer'] // 5 * sin(other_line['angle'])
    distance = dist((line['x'], line['y']), (other_line['x'], other_line['y']))
    if distance < CONNECT_DISTANCE:
        alpha = min([255, line['timer']])
        l(screen, (alpha, alpha, alpha), (line['x'], line['y']), (other_line['x'], other_line['y']), 1)
        circle(screen, (alpha, alpha, alpha), (line['x'], line['y']), 2)
        circle(screen, (alpha, alpha, alpha), (other_line['x'], other_line['y']), 2)
        return
    distance = dist((line['x'], line['y']), (x2, y2))
    if distance < CONNECT_DISTANCE:
        alpha = min([255, line['timer']])
        l(screen, (alpha, alpha, alpha), (line['x'], line['y']), (x2, y2), 1)
        circle(screen, (alpha, alpha, alpha), (line['x'], line['y']), 2)
        circle(screen, (alpha, alpha, alpha), (x2, y2), 2)
        return
    distance = dist((x1, y1), (x2, y2))
    if distance < CONNECT_DISTANCE:
        alpha = min([255, line['timer']])
        l(screen, (alpha, alpha, alpha), (x1, y1), (x2, y2), 1)
        circle(screen, (alpha, alpha, alpha), (x1, y1), 2)
        circle(screen, (alpha, alpha, alpha), (x2, y2), 2)
        return
    distance = dist((x1, y1), (other_line['x'], other_line['y']))
    if distance < CONNECT_DISTANCE:
        alpha = min([255, line['timer']])
        l(screen, (alpha, alpha, alpha), (x1, y1), (other_line['x'], other_line['y']), 1)
        circle(screen, (alpha, alpha, alpha), (x1, y1), 2)
        circle(screen, (alpha, alpha, alpha), (other_line['x'], other_line['y']), 2)
def dispose_line(line):
    line['x'] += cos(line['angle'])
    line['y'] += sin(line['angle'])
    if line['x'] < 0 or line['x'] > 1500 or line['y'] < 0 or line['y'] > 700:
        return True
    return False
def fade_out_line(line):
    line['fade_timer'] += 1
    if line['fade_timer'] > FADE_OUT_TIME:
        return True
    return False
def connect_to_mouse(line, mouse_x, mouse_y):
    distance_to_mouse = dist((line['x'], line['y']), (mouse_x, mouse_y))
    if distance_to_mouse < MAGNET_RADIUS:
        line['fade-out'] = False
        angle_to_mouse = atan2(mouse_y - line['y'], mouse_x - line['x'])
        line['x'] += cos(angle_to_mouse) * 5
        line['y'] += sin(angle_to_mouse) * 5
lines = []
screen = set_mode((1500, 700))
clock = Clock()
running = True
while running:
    for event in get():
        if event.type == QUIT:
            running = False
    screen.fill((0, 0, 0))
    if random() < 0.07:
        lines.append({'x': randint(0, 1500),'y': randint(0, 700), 'fade-out': False, 'angle': uniform(0, 2 * 3.141592653589793), 'timer': 1, 'rotation_speed': uniform(-0.01, 0.01)})
    for line in lines:
        update_angle(line)
        draw_line(line)
        for other_line in lines:
            if line != other_line:
                connect_lines(line, other_line)
        if dispose_line(line):
            lines.remove(line)
            continue
        if line['timer'] > 500:
            line['fade-out'] = True
        if line['fade-out']:
            line['timer'] -= 1
        else:
            line['timer'] += 1
        connect_to_mouse(line, *get_pos())
    flip()
    clock.tick(100)
最新问题
© www.soinside.com 2019 - 2024. All rights reserved.